| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* Converted from tools/testing/selftests/bpf/verifier/xdp_direct_packet_access.c */ |
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| 3 | |
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| 4 | #include <linux/bpf.h> |
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| 5 | #include <bpf/bpf_helpers.h> |
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| 6 | #include "bpf_misc.h" |
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| 7 | |
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| 8 | SEC("xdp" ) |
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| 9 | __description("XDP pkt read, pkt_end mangling, bad access 1" ) |
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| 10 | __failure __msg("R3 pointer arithmetic on pkt_end" ) |
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| 11 | __naked void end_mangling_bad_access_1(void) |
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| 12 | { |
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| 13 | asm volatile (" \ |
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| 14 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 15 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 16 | r1 = r2; \ |
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| 17 | r1 += 8; \ |
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| 18 | r3 += 8; \ |
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| 19 | if r1 > r3 goto l0_%=; \ |
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| 20 | r0 = *(u64*)(r1 - 8); \ |
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| 21 | l0_%=: r0 = 0; \ |
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| 22 | exit; \ |
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| 23 | " : |
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| 24 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 25 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 26 | : __clobber_all); |
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| 27 | } |
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| 28 | |
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| 29 | SEC("xdp" ) |
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| 30 | __description("XDP pkt read, pkt_end mangling, bad access 2" ) |
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| 31 | __failure __msg("R3 pointer arithmetic on pkt_end" ) |
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| 32 | __naked void end_mangling_bad_access_2(void) |
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| 33 | { |
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| 34 | asm volatile (" \ |
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| 35 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 36 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 37 | r1 = r2; \ |
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| 38 | r1 += 8; \ |
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| 39 | r3 -= 8; \ |
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| 40 | if r1 > r3 goto l0_%=; \ |
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| 41 | r0 = *(u64*)(r1 - 8); \ |
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| 42 | l0_%=: r0 = 0; \ |
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| 43 | exit; \ |
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| 44 | " : |
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| 45 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 46 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 47 | : __clobber_all); |
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| 48 | } |
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| 49 | |
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| 50 | SEC("xdp" ) |
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| 51 | __description("XDP pkt read, pkt_data' > pkt_end, corner case, good access" ) |
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| 52 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 53 | __naked void end_corner_case_good_access_1(void) |
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| 54 | { |
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| 55 | asm volatile (" \ |
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| 56 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 57 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 58 | r1 = r2; \ |
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| 59 | r1 += 8; \ |
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| 60 | if r1 > r3 goto l0_%=; \ |
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| 61 | r0 = *(u64*)(r1 - 8); \ |
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| 62 | l0_%=: r0 = 0; \ |
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| 63 | exit; \ |
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| 64 | " : |
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| 65 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 66 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 67 | : __clobber_all); |
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| 68 | } |
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| 69 | |
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| 70 | SEC("xdp" ) |
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| 71 | __description("XDP pkt read, pkt_data' > pkt_end, bad access 1" ) |
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| 72 | __failure __msg("R1 offset is outside of the packet" ) |
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| 73 | __flag(BPF_F_ANY_ALIGNMENT) |
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| 74 | __naked void pkt_end_bad_access_1_1(void) |
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| 75 | { |
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| 76 | asm volatile (" \ |
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| 77 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 78 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 79 | r1 = r2; \ |
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| 80 | r1 += 8; \ |
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| 81 | if r1 > r3 goto l0_%=; \ |
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| 82 | r0 = *(u64*)(r1 - 4); \ |
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| 83 | l0_%=: r0 = 0; \ |
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| 84 | exit; \ |
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| 85 | " : |
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| 86 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 87 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 88 | : __clobber_all); |
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| 89 | } |
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| 90 | |
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| 91 | SEC("xdp" ) |
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| 92 | __description("XDP pkt read, pkt_data' > pkt_end, bad access 2" ) |
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| 93 | __failure __msg("R1 offset is outside of the packet" ) |
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| 94 | __flag(BPF_F_ANY_ALIGNMENT) |
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| 95 | __naked void pkt_end_bad_access_2_1(void) |
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| 96 | { |
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| 97 | asm volatile (" \ |
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| 98 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 99 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 100 | r1 = r2; \ |
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| 101 | r1 += 8; \ |
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| 102 | if r1 > r3 goto l0_%=; \ |
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| 103 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
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| 104 | r0 = 0; \ |
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| 105 | exit; \ |
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| 106 | " : |
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| 107 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 108 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 109 | : __clobber_all); |
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| 110 | } |
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| 111 | |
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| 112 | SEC("xdp" ) |
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| 113 | __description("XDP pkt read, pkt_data' > pkt_end, corner case +1, good access" ) |
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| 114 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 115 | __naked void corner_case_1_good_access_1(void) |
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| 116 | { |
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| 117 | asm volatile (" \ |
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| 118 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 119 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 120 | r1 = r2; \ |
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| 121 | r1 += 9; \ |
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| 122 | if r1 > r3 goto l0_%=; \ |
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| 123 | r0 = *(u64*)(r1 - 9); \ |
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| 124 | l0_%=: r0 = 0; \ |
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| 125 | exit; \ |
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| 126 | " : |
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| 127 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 128 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 129 | : __clobber_all); |
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| 130 | } |
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| 131 | |
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| 132 | SEC("xdp" ) |
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| 133 | __description("XDP pkt read, pkt_data' > pkt_end, corner case -1, bad access" ) |
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| 134 | __failure __msg("R1 offset is outside of the packet" ) |
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| 135 | __flag(BPF_F_ANY_ALIGNMENT) |
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| 136 | __naked void corner_case_1_bad_access_1(void) |
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| 137 | { |
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| 138 | asm volatile (" \ |
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| 139 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 140 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 141 | r1 = r2; \ |
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| 142 | r1 += 7; \ |
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| 143 | if r1 > r3 goto l0_%=; \ |
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| 144 | r0 = *(u64*)(r1 - 7); \ |
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| 145 | l0_%=: r0 = 0; \ |
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| 146 | exit; \ |
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| 147 | " : |
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| 148 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 149 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 150 | : __clobber_all); |
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| 151 | } |
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| 152 | |
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| 153 | SEC("xdp" ) |
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| 154 | __description("XDP pkt read, pkt_end > pkt_data', good access" ) |
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| 155 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 156 | __naked void end_pkt_data_good_access_1(void) |
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| 157 | { |
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| 158 | asm volatile (" \ |
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| 159 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 160 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 161 | r1 = r2; \ |
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| 162 | r1 += 8; \ |
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| 163 | if r3 > r1 goto l0_%=; \ |
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| 164 | goto l1_%=; \ |
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| 165 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
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| 166 | l1_%=: r0 = 0; \ |
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| 167 | exit; \ |
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| 168 | " : |
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| 169 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 170 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 171 | : __clobber_all); |
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| 172 | } |
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| 173 | |
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| 174 | SEC("xdp" ) |
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| 175 | __description("XDP pkt read, pkt_end > pkt_data', corner case -1, bad access" ) |
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| 176 | __failure __msg("R1 offset is outside of the packet" ) |
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| 177 | __flag(BPF_F_ANY_ALIGNMENT) |
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| 178 | __naked void corner_case_1_bad_access_2(void) |
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| 179 | { |
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| 180 | asm volatile (" \ |
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| 181 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 182 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 183 | r1 = r2; \ |
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| 184 | r1 += 6; \ |
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| 185 | if r3 > r1 goto l0_%=; \ |
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| 186 | goto l1_%=; \ |
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| 187 | l0_%=: r0 = *(u64*)(r1 - 6); \ |
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| 188 | l1_%=: r0 = 0; \ |
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| 189 | exit; \ |
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| 190 | " : |
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| 191 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 192 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 193 | : __clobber_all); |
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| 194 | } |
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| 195 | |
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| 196 | SEC("xdp" ) |
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| 197 | __description("XDP pkt read, pkt_end > pkt_data', bad access 2" ) |
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| 198 | __failure __msg("R1 offset is outside of the packet" ) |
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| 199 | __flag(BPF_F_ANY_ALIGNMENT) |
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| 200 | __naked void pkt_data_bad_access_2_1(void) |
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| 201 | { |
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| 202 | asm volatile (" \ |
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| 203 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 204 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 205 | r1 = r2; \ |
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| 206 | r1 += 8; \ |
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| 207 | if r3 > r1 goto l0_%=; \ |
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| 208 | r0 = *(u64*)(r1 - 8); \ |
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| 209 | l0_%=: r0 = 0; \ |
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| 210 | exit; \ |
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| 211 | " : |
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| 212 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 213 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 214 | : __clobber_all); |
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| 215 | } |
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| 216 | |
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| 217 | SEC("xdp" ) |
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| 218 | __description("XDP pkt read, pkt_end > pkt_data', corner case, good access" ) |
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| 219 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 220 | __naked void data_corner_case_good_access_1(void) |
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| 221 | { |
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| 222 | asm volatile (" \ |
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| 223 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 224 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 225 | r1 = r2; \ |
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| 226 | r1 += 7; \ |
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| 227 | if r3 > r1 goto l0_%=; \ |
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| 228 | goto l1_%=; \ |
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| 229 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
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| 230 | l1_%=: r0 = 0; \ |
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| 231 | exit; \ |
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| 232 | " : |
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| 233 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 234 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 235 | : __clobber_all); |
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| 236 | } |
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| 237 | |
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| 238 | SEC("xdp" ) |
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| 239 | __description("XDP pkt read, pkt_end > pkt_data', corner case +1, good access" ) |
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| 240 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 241 | __naked void corner_case_1_good_access_2(void) |
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| 242 | { |
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| 243 | asm volatile (" \ |
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| 244 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 245 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 246 | r1 = r2; \ |
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| 247 | r1 += 8; \ |
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| 248 | if r3 > r1 goto l0_%=; \ |
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| 249 | goto l1_%=; \ |
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| 250 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
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| 251 | l1_%=: r0 = 0; \ |
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| 252 | exit; \ |
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| 253 | " : |
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| 254 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 255 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 256 | : __clobber_all); |
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| 257 | } |
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| 258 | |
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| 259 | SEC("xdp" ) |
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| 260 | __description("XDP pkt read, pkt_data' < pkt_end, good access" ) |
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| 261 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 262 | __naked void data_pkt_end_good_access_1(void) |
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| 263 | { |
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| 264 | asm volatile (" \ |
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| 265 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 266 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 267 | r1 = r2; \ |
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| 268 | r1 += 8; \ |
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| 269 | if r1 < r3 goto l0_%=; \ |
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| 270 | goto l1_%=; \ |
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| 271 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
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| 272 | l1_%=: r0 = 0; \ |
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| 273 | exit; \ |
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| 274 | " : |
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| 275 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 276 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 277 | : __clobber_all); |
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| 278 | } |
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| 279 | |
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| 280 | SEC("xdp" ) |
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| 281 | __description("XDP pkt read, pkt_data' < pkt_end, corner case -1, bad access" ) |
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| 282 | __failure __msg("R1 offset is outside of the packet" ) |
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| 283 | __flag(BPF_F_ANY_ALIGNMENT) |
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| 284 | __naked void corner_case_1_bad_access_3(void) |
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| 285 | { |
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| 286 | asm volatile (" \ |
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| 287 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 288 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 289 | r1 = r2; \ |
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| 290 | r1 += 6; \ |
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| 291 | if r1 < r3 goto l0_%=; \ |
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| 292 | goto l1_%=; \ |
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| 293 | l0_%=: r0 = *(u64*)(r1 - 6); \ |
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| 294 | l1_%=: r0 = 0; \ |
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| 295 | exit; \ |
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| 296 | " : |
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| 297 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 298 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 299 | : __clobber_all); |
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| 300 | } |
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| 301 | |
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| 302 | SEC("xdp" ) |
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| 303 | __description("XDP pkt read, pkt_data' < pkt_end, bad access 2" ) |
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| 304 | __failure __msg("R1 offset is outside of the packet" ) |
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| 305 | __flag(BPF_F_ANY_ALIGNMENT) |
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| 306 | __naked void pkt_end_bad_access_2_2(void) |
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| 307 | { |
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| 308 | asm volatile (" \ |
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| 309 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 310 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 311 | r1 = r2; \ |
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| 312 | r1 += 8; \ |
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| 313 | if r1 < r3 goto l0_%=; \ |
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| 314 | r0 = *(u64*)(r1 - 8); \ |
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| 315 | l0_%=: r0 = 0; \ |
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| 316 | exit; \ |
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| 317 | " : |
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| 318 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 319 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 320 | : __clobber_all); |
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| 321 | } |
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| 322 | |
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| 323 | SEC("xdp" ) |
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| 324 | __description("XDP pkt read, pkt_data' < pkt_end, corner case, good access" ) |
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| 325 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 326 | __naked void end_corner_case_good_access_2(void) |
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| 327 | { |
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| 328 | asm volatile (" \ |
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| 329 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 330 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 331 | r1 = r2; \ |
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| 332 | r1 += 7; \ |
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| 333 | if r1 < r3 goto l0_%=; \ |
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| 334 | goto l1_%=; \ |
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| 335 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
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| 336 | l1_%=: r0 = 0; \ |
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| 337 | exit; \ |
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| 338 | " : |
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| 339 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 340 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 341 | : __clobber_all); |
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| 342 | } |
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| 343 | |
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| 344 | SEC("xdp" ) |
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| 345 | __description("XDP pkt read, pkt_data' < pkt_end, corner case +1, good access" ) |
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| 346 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 347 | __naked void corner_case_1_good_access_3(void) |
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| 348 | { |
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| 349 | asm volatile (" \ |
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| 350 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 351 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 352 | r1 = r2; \ |
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| 353 | r1 += 8; \ |
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| 354 | if r1 < r3 goto l0_%=; \ |
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| 355 | goto l1_%=; \ |
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| 356 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
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| 357 | l1_%=: r0 = 0; \ |
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| 358 | exit; \ |
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| 359 | " : |
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| 360 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
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| 361 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
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| 362 | : __clobber_all); |
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| 363 | } |
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| 364 | |
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| 365 | SEC("xdp" ) |
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| 366 | __description("XDP pkt read, pkt_end < pkt_data', corner case, good access" ) |
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| 367 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
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| 368 | __naked void data_corner_case_good_access_2(void) |
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| 369 | { |
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| 370 | asm volatile (" \ |
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| 371 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
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| 372 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
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| 373 | r1 = r2; \ |
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| 374 | r1 += 8; \ |
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| 375 | if r3 < r1 goto l0_%=; \ |
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| 376 | r0 = *(u64*)(r1 - 8); \ |
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| 377 | l0_%=: r0 = 0; \ |
|---|
| 378 | exit; \ |
|---|
| 379 | " : |
|---|
| 380 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 381 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 382 | : __clobber_all); |
|---|
| 383 | } |
|---|
| 384 | |
|---|
| 385 | SEC("xdp" ) |
|---|
| 386 | __description("XDP pkt read, pkt_end < pkt_data', bad access 1" ) |
|---|
| 387 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 388 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 389 | __naked void pkt_data_bad_access_1_1(void) |
|---|
| 390 | { |
|---|
| 391 | asm volatile (" \ |
|---|
| 392 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 393 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 394 | r1 = r2; \ |
|---|
| 395 | r1 += 8; \ |
|---|
| 396 | if r3 < r1 goto l0_%=; \ |
|---|
| 397 | r0 = *(u64*)(r1 - 4); \ |
|---|
| 398 | l0_%=: r0 = 0; \ |
|---|
| 399 | exit; \ |
|---|
| 400 | " : |
|---|
| 401 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 402 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 403 | : __clobber_all); |
|---|
| 404 | } |
|---|
| 405 | |
|---|
| 406 | SEC("xdp" ) |
|---|
| 407 | __description("XDP pkt read, pkt_end < pkt_data', bad access 2" ) |
|---|
| 408 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 409 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 410 | __naked void pkt_data_bad_access_2_2(void) |
|---|
| 411 | { |
|---|
| 412 | asm volatile (" \ |
|---|
| 413 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 414 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 415 | r1 = r2; \ |
|---|
| 416 | r1 += 8; \ |
|---|
| 417 | if r3 < r1 goto l0_%=; \ |
|---|
| 418 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 419 | r0 = 0; \ |
|---|
| 420 | exit; \ |
|---|
| 421 | " : |
|---|
| 422 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 423 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 424 | : __clobber_all); |
|---|
| 425 | } |
|---|
| 426 | |
|---|
| 427 | SEC("xdp" ) |
|---|
| 428 | __description("XDP pkt read, pkt_end < pkt_data', corner case +1, good access" ) |
|---|
| 429 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 430 | __naked void corner_case_1_good_access_4(void) |
|---|
| 431 | { |
|---|
| 432 | asm volatile (" \ |
|---|
| 433 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 434 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 435 | r1 = r2; \ |
|---|
| 436 | r1 += 9; \ |
|---|
| 437 | if r3 < r1 goto l0_%=; \ |
|---|
| 438 | r0 = *(u64*)(r1 - 9); \ |
|---|
| 439 | l0_%=: r0 = 0; \ |
|---|
| 440 | exit; \ |
|---|
| 441 | " : |
|---|
| 442 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 443 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 444 | : __clobber_all); |
|---|
| 445 | } |
|---|
| 446 | |
|---|
| 447 | SEC("xdp" ) |
|---|
| 448 | __description("XDP pkt read, pkt_end < pkt_data', corner case -1, bad access" ) |
|---|
| 449 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 450 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 451 | __naked void corner_case_1_bad_access_4(void) |
|---|
| 452 | { |
|---|
| 453 | asm volatile (" \ |
|---|
| 454 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 455 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 456 | r1 = r2; \ |
|---|
| 457 | r1 += 7; \ |
|---|
| 458 | if r3 < r1 goto l0_%=; \ |
|---|
| 459 | r0 = *(u64*)(r1 - 7); \ |
|---|
| 460 | l0_%=: r0 = 0; \ |
|---|
| 461 | exit; \ |
|---|
| 462 | " : |
|---|
| 463 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 464 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 465 | : __clobber_all); |
|---|
| 466 | } |
|---|
| 467 | |
|---|
| 468 | SEC("xdp" ) |
|---|
| 469 | __description("XDP pkt read, pkt_data' >= pkt_end, good access" ) |
|---|
| 470 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 471 | __naked void data_pkt_end_good_access_2(void) |
|---|
| 472 | { |
|---|
| 473 | asm volatile (" \ |
|---|
| 474 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 475 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 476 | r1 = r2; \ |
|---|
| 477 | r1 += 8; \ |
|---|
| 478 | if r1 >= r3 goto l0_%=; \ |
|---|
| 479 | r0 = *(u32*)(r1 - 5); \ |
|---|
| 480 | l0_%=: r0 = 0; \ |
|---|
| 481 | exit; \ |
|---|
| 482 | " : |
|---|
| 483 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 484 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 485 | : __clobber_all); |
|---|
| 486 | } |
|---|
| 487 | |
|---|
| 488 | SEC("xdp" ) |
|---|
| 489 | __description("XDP pkt read, pkt_data' >= pkt_end, corner case -1, bad access" ) |
|---|
| 490 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 491 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 492 | __naked void corner_case_1_bad_access_5(void) |
|---|
| 493 | { |
|---|
| 494 | asm volatile (" \ |
|---|
| 495 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 496 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 497 | r1 = r2; \ |
|---|
| 498 | r1 += 6; \ |
|---|
| 499 | if r1 >= r3 goto l0_%=; \ |
|---|
| 500 | r0 = *(u64*)(r1 - 6); \ |
|---|
| 501 | l0_%=: r0 = 0; \ |
|---|
| 502 | exit; \ |
|---|
| 503 | " : |
|---|
| 504 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 505 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 506 | : __clobber_all); |
|---|
| 507 | } |
|---|
| 508 | |
|---|
| 509 | SEC("xdp" ) |
|---|
| 510 | __description("XDP pkt read, pkt_data' >= pkt_end, bad access 2" ) |
|---|
| 511 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 512 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 513 | __naked void pkt_end_bad_access_2_3(void) |
|---|
| 514 | { |
|---|
| 515 | asm volatile (" \ |
|---|
| 516 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 517 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 518 | r1 = r2; \ |
|---|
| 519 | r1 += 8; \ |
|---|
| 520 | if r1 >= r3 goto l0_%=; \ |
|---|
| 521 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
|---|
| 522 | r0 = 0; \ |
|---|
| 523 | exit; \ |
|---|
| 524 | " : |
|---|
| 525 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 526 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 527 | : __clobber_all); |
|---|
| 528 | } |
|---|
| 529 | |
|---|
| 530 | SEC("xdp" ) |
|---|
| 531 | __description("XDP pkt read, pkt_data' >= pkt_end, corner case, good access" ) |
|---|
| 532 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 533 | __naked void end_corner_case_good_access_3(void) |
|---|
| 534 | { |
|---|
| 535 | asm volatile (" \ |
|---|
| 536 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 537 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 538 | r1 = r2; \ |
|---|
| 539 | r1 += 7; \ |
|---|
| 540 | if r1 >= r3 goto l0_%=; \ |
|---|
| 541 | r0 = *(u64*)(r1 - 7); \ |
|---|
| 542 | l0_%=: r0 = 0; \ |
|---|
| 543 | exit; \ |
|---|
| 544 | " : |
|---|
| 545 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 546 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 547 | : __clobber_all); |
|---|
| 548 | } |
|---|
| 549 | |
|---|
| 550 | SEC("xdp" ) |
|---|
| 551 | __description("XDP pkt read, pkt_data' >= pkt_end, corner case +1, good access" ) |
|---|
| 552 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 553 | __naked void corner_case_1_good_access_5(void) |
|---|
| 554 | { |
|---|
| 555 | asm volatile (" \ |
|---|
| 556 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 557 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 558 | r1 = r2; \ |
|---|
| 559 | r1 += 8; \ |
|---|
| 560 | if r1 >= r3 goto l0_%=; \ |
|---|
| 561 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 562 | l0_%=: r0 = 0; \ |
|---|
| 563 | exit; \ |
|---|
| 564 | " : |
|---|
| 565 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 566 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 567 | : __clobber_all); |
|---|
| 568 | } |
|---|
| 569 | |
|---|
| 570 | SEC("xdp" ) |
|---|
| 571 | __description("XDP pkt read, pkt_end >= pkt_data', corner case, good access" ) |
|---|
| 572 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 573 | __naked void data_corner_case_good_access_3(void) |
|---|
| 574 | { |
|---|
| 575 | asm volatile (" \ |
|---|
| 576 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 577 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 578 | r1 = r2; \ |
|---|
| 579 | r1 += 8; \ |
|---|
| 580 | if r3 >= r1 goto l0_%=; \ |
|---|
| 581 | goto l1_%=; \ |
|---|
| 582 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 583 | l1_%=: r0 = 0; \ |
|---|
| 584 | exit; \ |
|---|
| 585 | " : |
|---|
| 586 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 587 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 588 | : __clobber_all); |
|---|
| 589 | } |
|---|
| 590 | |
|---|
| 591 | SEC("xdp" ) |
|---|
| 592 | __description("XDP pkt read, pkt_end >= pkt_data', bad access 1" ) |
|---|
| 593 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 594 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 595 | __naked void pkt_data_bad_access_1_2(void) |
|---|
| 596 | { |
|---|
| 597 | asm volatile (" \ |
|---|
| 598 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 599 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 600 | r1 = r2; \ |
|---|
| 601 | r1 += 8; \ |
|---|
| 602 | if r3 >= r1 goto l0_%=; \ |
|---|
| 603 | goto l1_%=; \ |
|---|
| 604 | l0_%=: r0 = *(u64*)(r1 - 4); \ |
|---|
| 605 | l1_%=: r0 = 0; \ |
|---|
| 606 | exit; \ |
|---|
| 607 | " : |
|---|
| 608 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 609 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 610 | : __clobber_all); |
|---|
| 611 | } |
|---|
| 612 | |
|---|
| 613 | SEC("xdp" ) |
|---|
| 614 | __description("XDP pkt read, pkt_end >= pkt_data', bad access 2" ) |
|---|
| 615 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 616 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 617 | __naked void pkt_data_bad_access_2_3(void) |
|---|
| 618 | { |
|---|
| 619 | asm volatile (" \ |
|---|
| 620 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 621 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 622 | r1 = r2; \ |
|---|
| 623 | r1 += 8; \ |
|---|
| 624 | if r3 >= r1 goto l0_%=; \ |
|---|
| 625 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 626 | l0_%=: r0 = 0; \ |
|---|
| 627 | exit; \ |
|---|
| 628 | " : |
|---|
| 629 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 630 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 631 | : __clobber_all); |
|---|
| 632 | } |
|---|
| 633 | |
|---|
| 634 | SEC("xdp" ) |
|---|
| 635 | __description("XDP pkt read, pkt_end >= pkt_data', corner case +1, good access" ) |
|---|
| 636 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 637 | __naked void corner_case_1_good_access_6(void) |
|---|
| 638 | { |
|---|
| 639 | asm volatile (" \ |
|---|
| 640 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 641 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 642 | r1 = r2; \ |
|---|
| 643 | r1 += 9; \ |
|---|
| 644 | if r3 >= r1 goto l0_%=; \ |
|---|
| 645 | goto l1_%=; \ |
|---|
| 646 | l0_%=: r0 = *(u64*)(r1 - 9); \ |
|---|
| 647 | l1_%=: r0 = 0; \ |
|---|
| 648 | exit; \ |
|---|
| 649 | " : |
|---|
| 650 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 651 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 652 | : __clobber_all); |
|---|
| 653 | } |
|---|
| 654 | |
|---|
| 655 | SEC("xdp" ) |
|---|
| 656 | __description("XDP pkt read, pkt_end >= pkt_data', corner case -1, bad access" ) |
|---|
| 657 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 658 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 659 | __naked void corner_case_1_bad_access_6(void) |
|---|
| 660 | { |
|---|
| 661 | asm volatile (" \ |
|---|
| 662 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 663 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 664 | r1 = r2; \ |
|---|
| 665 | r1 += 7; \ |
|---|
| 666 | if r3 >= r1 goto l0_%=; \ |
|---|
| 667 | goto l1_%=; \ |
|---|
| 668 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
|---|
| 669 | l1_%=: r0 = 0; \ |
|---|
| 670 | exit; \ |
|---|
| 671 | " : |
|---|
| 672 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 673 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 674 | : __clobber_all); |
|---|
| 675 | } |
|---|
| 676 | |
|---|
| 677 | SEC("xdp" ) |
|---|
| 678 | __description("XDP pkt read, pkt_data' <= pkt_end, corner case, good access" ) |
|---|
| 679 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 680 | __naked void end_corner_case_good_access_4(void) |
|---|
| 681 | { |
|---|
| 682 | asm volatile (" \ |
|---|
| 683 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 684 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 685 | r1 = r2; \ |
|---|
| 686 | r1 += 8; \ |
|---|
| 687 | if r1 <= r3 goto l0_%=; \ |
|---|
| 688 | goto l1_%=; \ |
|---|
| 689 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 690 | l1_%=: r0 = 0; \ |
|---|
| 691 | exit; \ |
|---|
| 692 | " : |
|---|
| 693 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 694 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 695 | : __clobber_all); |
|---|
| 696 | } |
|---|
| 697 | |
|---|
| 698 | SEC("xdp" ) |
|---|
| 699 | __description("XDP pkt read, pkt_data' <= pkt_end, bad access 1" ) |
|---|
| 700 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 701 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 702 | __naked void pkt_end_bad_access_1_2(void) |
|---|
| 703 | { |
|---|
| 704 | asm volatile (" \ |
|---|
| 705 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 706 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 707 | r1 = r2; \ |
|---|
| 708 | r1 += 8; \ |
|---|
| 709 | if r1 <= r3 goto l0_%=; \ |
|---|
| 710 | goto l1_%=; \ |
|---|
| 711 | l0_%=: r0 = *(u64*)(r1 - 4); \ |
|---|
| 712 | l1_%=: r0 = 0; \ |
|---|
| 713 | exit; \ |
|---|
| 714 | " : |
|---|
| 715 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 716 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 717 | : __clobber_all); |
|---|
| 718 | } |
|---|
| 719 | |
|---|
| 720 | SEC("xdp" ) |
|---|
| 721 | __description("XDP pkt read, pkt_data' <= pkt_end, bad access 2" ) |
|---|
| 722 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 723 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 724 | __naked void pkt_end_bad_access_2_4(void) |
|---|
| 725 | { |
|---|
| 726 | asm volatile (" \ |
|---|
| 727 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 728 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 729 | r1 = r2; \ |
|---|
| 730 | r1 += 8; \ |
|---|
| 731 | if r1 <= r3 goto l0_%=; \ |
|---|
| 732 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 733 | l0_%=: r0 = 0; \ |
|---|
| 734 | exit; \ |
|---|
| 735 | " : |
|---|
| 736 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 737 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 738 | : __clobber_all); |
|---|
| 739 | } |
|---|
| 740 | |
|---|
| 741 | SEC("xdp" ) |
|---|
| 742 | __description("XDP pkt read, pkt_data' <= pkt_end, corner case +1, good access" ) |
|---|
| 743 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 744 | __naked void corner_case_1_good_access_7(void) |
|---|
| 745 | { |
|---|
| 746 | asm volatile (" \ |
|---|
| 747 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 748 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 749 | r1 = r2; \ |
|---|
| 750 | r1 += 9; \ |
|---|
| 751 | if r1 <= r3 goto l0_%=; \ |
|---|
| 752 | goto l1_%=; \ |
|---|
| 753 | l0_%=: r0 = *(u64*)(r1 - 9); \ |
|---|
| 754 | l1_%=: r0 = 0; \ |
|---|
| 755 | exit; \ |
|---|
| 756 | " : |
|---|
| 757 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 758 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 759 | : __clobber_all); |
|---|
| 760 | } |
|---|
| 761 | |
|---|
| 762 | SEC("xdp" ) |
|---|
| 763 | __description("XDP pkt read, pkt_data' <= pkt_end, corner case -1, bad access" ) |
|---|
| 764 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 765 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 766 | __naked void corner_case_1_bad_access_7(void) |
|---|
| 767 | { |
|---|
| 768 | asm volatile (" \ |
|---|
| 769 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 770 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 771 | r1 = r2; \ |
|---|
| 772 | r1 += 7; \ |
|---|
| 773 | if r1 <= r3 goto l0_%=; \ |
|---|
| 774 | goto l1_%=; \ |
|---|
| 775 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
|---|
| 776 | l1_%=: r0 = 0; \ |
|---|
| 777 | exit; \ |
|---|
| 778 | " : |
|---|
| 779 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 780 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 781 | : __clobber_all); |
|---|
| 782 | } |
|---|
| 783 | |
|---|
| 784 | SEC("xdp" ) |
|---|
| 785 | __description("XDP pkt read, pkt_end <= pkt_data', good access" ) |
|---|
| 786 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 787 | __naked void end_pkt_data_good_access_2(void) |
|---|
| 788 | { |
|---|
| 789 | asm volatile (" \ |
|---|
| 790 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 791 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 792 | r1 = r2; \ |
|---|
| 793 | r1 += 8; \ |
|---|
| 794 | if r3 <= r1 goto l0_%=; \ |
|---|
| 795 | r0 = *(u32*)(r1 - 5); \ |
|---|
| 796 | l0_%=: r0 = 0; \ |
|---|
| 797 | exit; \ |
|---|
| 798 | " : |
|---|
| 799 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 800 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 801 | : __clobber_all); |
|---|
| 802 | } |
|---|
| 803 | |
|---|
| 804 | SEC("xdp" ) |
|---|
| 805 | __description("XDP pkt read, pkt_end <= pkt_data', corner case -1, bad access" ) |
|---|
| 806 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 807 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 808 | __naked void corner_case_1_bad_access_8(void) |
|---|
| 809 | { |
|---|
| 810 | asm volatile (" \ |
|---|
| 811 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 812 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 813 | r1 = r2; \ |
|---|
| 814 | r1 += 6; \ |
|---|
| 815 | if r3 <= r1 goto l0_%=; \ |
|---|
| 816 | r0 = *(u64*)(r1 - 6); \ |
|---|
| 817 | l0_%=: r0 = 0; \ |
|---|
| 818 | exit; \ |
|---|
| 819 | " : |
|---|
| 820 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 821 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 822 | : __clobber_all); |
|---|
| 823 | } |
|---|
| 824 | |
|---|
| 825 | SEC("xdp" ) |
|---|
| 826 | __description("XDP pkt read, pkt_end <= pkt_data', bad access 2" ) |
|---|
| 827 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 828 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 829 | __naked void pkt_data_bad_access_2_4(void) |
|---|
| 830 | { |
|---|
| 831 | asm volatile (" \ |
|---|
| 832 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 833 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 834 | r1 = r2; \ |
|---|
| 835 | r1 += 8; \ |
|---|
| 836 | if r3 <= r1 goto l0_%=; \ |
|---|
| 837 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
|---|
| 838 | r0 = 0; \ |
|---|
| 839 | exit; \ |
|---|
| 840 | " : |
|---|
| 841 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 842 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 843 | : __clobber_all); |
|---|
| 844 | } |
|---|
| 845 | |
|---|
| 846 | SEC("xdp" ) |
|---|
| 847 | __description("XDP pkt read, pkt_end <= pkt_data', corner case, good access" ) |
|---|
| 848 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 849 | __naked void data_corner_case_good_access_4(void) |
|---|
| 850 | { |
|---|
| 851 | asm volatile (" \ |
|---|
| 852 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 853 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 854 | r1 = r2; \ |
|---|
| 855 | r1 += 7; \ |
|---|
| 856 | if r3 <= r1 goto l0_%=; \ |
|---|
| 857 | r0 = *(u64*)(r1 - 7); \ |
|---|
| 858 | l0_%=: r0 = 0; \ |
|---|
| 859 | exit; \ |
|---|
| 860 | " : |
|---|
| 861 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 862 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 863 | : __clobber_all); |
|---|
| 864 | } |
|---|
| 865 | |
|---|
| 866 | SEC("xdp" ) |
|---|
| 867 | __description("XDP pkt read, pkt_end <= pkt_data', corner case +1, good access" ) |
|---|
| 868 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 869 | __naked void corner_case_1_good_access_8(void) |
|---|
| 870 | { |
|---|
| 871 | asm volatile (" \ |
|---|
| 872 | r2 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 873 | r3 = *(u32*)(r1 + %[xdp_md_data_end]); \ |
|---|
| 874 | r1 = r2; \ |
|---|
| 875 | r1 += 8; \ |
|---|
| 876 | if r3 <= r1 goto l0_%=; \ |
|---|
| 877 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 878 | l0_%=: r0 = 0; \ |
|---|
| 879 | exit; \ |
|---|
| 880 | " : |
|---|
| 881 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 882 | __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end)) |
|---|
| 883 | : __clobber_all); |
|---|
| 884 | } |
|---|
| 885 | |
|---|
| 886 | SEC("xdp" ) |
|---|
| 887 | __description("XDP pkt read, pkt_meta' > pkt_data, corner case, good access" ) |
|---|
| 888 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 889 | __naked void data_corner_case_good_access_5(void) |
|---|
| 890 | { |
|---|
| 891 | asm volatile (" \ |
|---|
| 892 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 893 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 894 | r1 = r2; \ |
|---|
| 895 | r1 += 8; \ |
|---|
| 896 | if r1 > r3 goto l0_%=; \ |
|---|
| 897 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 898 | l0_%=: r0 = 0; \ |
|---|
| 899 | exit; \ |
|---|
| 900 | " : |
|---|
| 901 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 902 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 903 | : __clobber_all); |
|---|
| 904 | } |
|---|
| 905 | |
|---|
| 906 | SEC("xdp" ) |
|---|
| 907 | __description("XDP pkt read, pkt_meta' > pkt_data, bad access 1" ) |
|---|
| 908 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 909 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 910 | __naked void pkt_data_bad_access_1_3(void) |
|---|
| 911 | { |
|---|
| 912 | asm volatile (" \ |
|---|
| 913 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 914 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 915 | r1 = r2; \ |
|---|
| 916 | r1 += 8; \ |
|---|
| 917 | if r1 > r3 goto l0_%=; \ |
|---|
| 918 | r0 = *(u64*)(r1 - 4); \ |
|---|
| 919 | l0_%=: r0 = 0; \ |
|---|
| 920 | exit; \ |
|---|
| 921 | " : |
|---|
| 922 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 923 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 924 | : __clobber_all); |
|---|
| 925 | } |
|---|
| 926 | |
|---|
| 927 | SEC("xdp" ) |
|---|
| 928 | __description("XDP pkt read, pkt_meta' > pkt_data, bad access 2" ) |
|---|
| 929 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 930 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 931 | __naked void pkt_data_bad_access_2_5(void) |
|---|
| 932 | { |
|---|
| 933 | asm volatile (" \ |
|---|
| 934 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 935 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 936 | r1 = r2; \ |
|---|
| 937 | r1 += 8; \ |
|---|
| 938 | if r1 > r3 goto l0_%=; \ |
|---|
| 939 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 940 | r0 = 0; \ |
|---|
| 941 | exit; \ |
|---|
| 942 | " : |
|---|
| 943 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 944 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 945 | : __clobber_all); |
|---|
| 946 | } |
|---|
| 947 | |
|---|
| 948 | SEC("xdp" ) |
|---|
| 949 | __description("XDP pkt read, pkt_meta' > pkt_data, corner case +1, good access" ) |
|---|
| 950 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 951 | __naked void corner_case_1_good_access_9(void) |
|---|
| 952 | { |
|---|
| 953 | asm volatile (" \ |
|---|
| 954 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 955 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 956 | r1 = r2; \ |
|---|
| 957 | r1 += 9; \ |
|---|
| 958 | if r1 > r3 goto l0_%=; \ |
|---|
| 959 | r0 = *(u64*)(r1 - 9); \ |
|---|
| 960 | l0_%=: r0 = 0; \ |
|---|
| 961 | exit; \ |
|---|
| 962 | " : |
|---|
| 963 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 964 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 965 | : __clobber_all); |
|---|
| 966 | } |
|---|
| 967 | |
|---|
| 968 | SEC("xdp" ) |
|---|
| 969 | __description("XDP pkt read, pkt_meta' > pkt_data, corner case -1, bad access" ) |
|---|
| 970 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 971 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 972 | __naked void corner_case_1_bad_access_9(void) |
|---|
| 973 | { |
|---|
| 974 | asm volatile (" \ |
|---|
| 975 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 976 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 977 | r1 = r2; \ |
|---|
| 978 | r1 += 7; \ |
|---|
| 979 | if r1 > r3 goto l0_%=; \ |
|---|
| 980 | r0 = *(u64*)(r1 - 7); \ |
|---|
| 981 | l0_%=: r0 = 0; \ |
|---|
| 982 | exit; \ |
|---|
| 983 | " : |
|---|
| 984 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 985 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 986 | : __clobber_all); |
|---|
| 987 | } |
|---|
| 988 | |
|---|
| 989 | SEC("xdp" ) |
|---|
| 990 | __description("XDP pkt read, pkt_data > pkt_meta', good access" ) |
|---|
| 991 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 992 | __naked void data_pkt_meta_good_access_1(void) |
|---|
| 993 | { |
|---|
| 994 | asm volatile (" \ |
|---|
| 995 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 996 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 997 | r1 = r2; \ |
|---|
| 998 | r1 += 8; \ |
|---|
| 999 | if r3 > r1 goto l0_%=; \ |
|---|
| 1000 | goto l1_%=; \ |
|---|
| 1001 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
|---|
| 1002 | l1_%=: r0 = 0; \ |
|---|
| 1003 | exit; \ |
|---|
| 1004 | " : |
|---|
| 1005 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1006 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1007 | : __clobber_all); |
|---|
| 1008 | } |
|---|
| 1009 | |
|---|
| 1010 | SEC("xdp" ) |
|---|
| 1011 | __description("XDP pkt read, pkt_data > pkt_meta', corner case -1, bad access" ) |
|---|
| 1012 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1013 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1014 | __naked void corner_case_1_bad_access_10(void) |
|---|
| 1015 | { |
|---|
| 1016 | asm volatile (" \ |
|---|
| 1017 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1018 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1019 | r1 = r2; \ |
|---|
| 1020 | r1 += 6; \ |
|---|
| 1021 | if r3 > r1 goto l0_%=; \ |
|---|
| 1022 | goto l1_%=; \ |
|---|
| 1023 | l0_%=: r0 = *(u64*)(r1 - 6); \ |
|---|
| 1024 | l1_%=: r0 = 0; \ |
|---|
| 1025 | exit; \ |
|---|
| 1026 | " : |
|---|
| 1027 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1028 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1029 | : __clobber_all); |
|---|
| 1030 | } |
|---|
| 1031 | |
|---|
| 1032 | SEC("xdp" ) |
|---|
| 1033 | __description("XDP pkt read, pkt_data > pkt_meta', bad access 2" ) |
|---|
| 1034 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1035 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1036 | __naked void pkt_meta_bad_access_2_1(void) |
|---|
| 1037 | { |
|---|
| 1038 | asm volatile (" \ |
|---|
| 1039 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1040 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1041 | r1 = r2; \ |
|---|
| 1042 | r1 += 8; \ |
|---|
| 1043 | if r3 > r1 goto l0_%=; \ |
|---|
| 1044 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 1045 | l0_%=: r0 = 0; \ |
|---|
| 1046 | exit; \ |
|---|
| 1047 | " : |
|---|
| 1048 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1049 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1050 | : __clobber_all); |
|---|
| 1051 | } |
|---|
| 1052 | |
|---|
| 1053 | SEC("xdp" ) |
|---|
| 1054 | __description("XDP pkt read, pkt_data > pkt_meta', corner case, good access" ) |
|---|
| 1055 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1056 | __naked void meta_corner_case_good_access_1(void) |
|---|
| 1057 | { |
|---|
| 1058 | asm volatile (" \ |
|---|
| 1059 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1060 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1061 | r1 = r2; \ |
|---|
| 1062 | r1 += 7; \ |
|---|
| 1063 | if r3 > r1 goto l0_%=; \ |
|---|
| 1064 | goto l1_%=; \ |
|---|
| 1065 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
|---|
| 1066 | l1_%=: r0 = 0; \ |
|---|
| 1067 | exit; \ |
|---|
| 1068 | " : |
|---|
| 1069 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1070 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1071 | : __clobber_all); |
|---|
| 1072 | } |
|---|
| 1073 | |
|---|
| 1074 | SEC("xdp" ) |
|---|
| 1075 | __description("XDP pkt read, pkt_data > pkt_meta', corner case +1, good access" ) |
|---|
| 1076 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1077 | __naked void corner_case_1_good_access_10(void) |
|---|
| 1078 | { |
|---|
| 1079 | asm volatile (" \ |
|---|
| 1080 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1081 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1082 | r1 = r2; \ |
|---|
| 1083 | r1 += 8; \ |
|---|
| 1084 | if r3 > r1 goto l0_%=; \ |
|---|
| 1085 | goto l1_%=; \ |
|---|
| 1086 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 1087 | l1_%=: r0 = 0; \ |
|---|
| 1088 | exit; \ |
|---|
| 1089 | " : |
|---|
| 1090 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1091 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1092 | : __clobber_all); |
|---|
| 1093 | } |
|---|
| 1094 | |
|---|
| 1095 | SEC("xdp" ) |
|---|
| 1096 | __description("XDP pkt read, pkt_meta' < pkt_data, good access" ) |
|---|
| 1097 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1098 | __naked void meta_pkt_data_good_access_1(void) |
|---|
| 1099 | { |
|---|
| 1100 | asm volatile (" \ |
|---|
| 1101 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1102 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1103 | r1 = r2; \ |
|---|
| 1104 | r1 += 8; \ |
|---|
| 1105 | if r1 < r3 goto l0_%=; \ |
|---|
| 1106 | goto l1_%=; \ |
|---|
| 1107 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
|---|
| 1108 | l1_%=: r0 = 0; \ |
|---|
| 1109 | exit; \ |
|---|
| 1110 | " : |
|---|
| 1111 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1112 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1113 | : __clobber_all); |
|---|
| 1114 | } |
|---|
| 1115 | |
|---|
| 1116 | SEC("xdp" ) |
|---|
| 1117 | __description("XDP pkt read, pkt_meta' < pkt_data, corner case -1, bad access" ) |
|---|
| 1118 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1119 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1120 | __naked void corner_case_1_bad_access_11(void) |
|---|
| 1121 | { |
|---|
| 1122 | asm volatile (" \ |
|---|
| 1123 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1124 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1125 | r1 = r2; \ |
|---|
| 1126 | r1 += 6; \ |
|---|
| 1127 | if r1 < r3 goto l0_%=; \ |
|---|
| 1128 | goto l1_%=; \ |
|---|
| 1129 | l0_%=: r0 = *(u64*)(r1 - 6); \ |
|---|
| 1130 | l1_%=: r0 = 0; \ |
|---|
| 1131 | exit; \ |
|---|
| 1132 | " : |
|---|
| 1133 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1134 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1135 | : __clobber_all); |
|---|
| 1136 | } |
|---|
| 1137 | |
|---|
| 1138 | SEC("xdp" ) |
|---|
| 1139 | __description("XDP pkt read, pkt_meta' < pkt_data, bad access 2" ) |
|---|
| 1140 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1141 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1142 | __naked void pkt_data_bad_access_2_6(void) |
|---|
| 1143 | { |
|---|
| 1144 | asm volatile (" \ |
|---|
| 1145 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1146 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1147 | r1 = r2; \ |
|---|
| 1148 | r1 += 8; \ |
|---|
| 1149 | if r1 < r3 goto l0_%=; \ |
|---|
| 1150 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 1151 | l0_%=: r0 = 0; \ |
|---|
| 1152 | exit; \ |
|---|
| 1153 | " : |
|---|
| 1154 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1155 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1156 | : __clobber_all); |
|---|
| 1157 | } |
|---|
| 1158 | |
|---|
| 1159 | SEC("xdp" ) |
|---|
| 1160 | __description("XDP pkt read, pkt_meta' < pkt_data, corner case, good access" ) |
|---|
| 1161 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1162 | __naked void data_corner_case_good_access_6(void) |
|---|
| 1163 | { |
|---|
| 1164 | asm volatile (" \ |
|---|
| 1165 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1166 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1167 | r1 = r2; \ |
|---|
| 1168 | r1 += 7; \ |
|---|
| 1169 | if r1 < r3 goto l0_%=; \ |
|---|
| 1170 | goto l1_%=; \ |
|---|
| 1171 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
|---|
| 1172 | l1_%=: r0 = 0; \ |
|---|
| 1173 | exit; \ |
|---|
| 1174 | " : |
|---|
| 1175 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1176 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1177 | : __clobber_all); |
|---|
| 1178 | } |
|---|
| 1179 | |
|---|
| 1180 | SEC("xdp" ) |
|---|
| 1181 | __description("XDP pkt read, pkt_meta' < pkt_data, corner case +1, good access" ) |
|---|
| 1182 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1183 | __naked void corner_case_1_good_access_11(void) |
|---|
| 1184 | { |
|---|
| 1185 | asm volatile (" \ |
|---|
| 1186 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1187 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1188 | r1 = r2; \ |
|---|
| 1189 | r1 += 8; \ |
|---|
| 1190 | if r1 < r3 goto l0_%=; \ |
|---|
| 1191 | goto l1_%=; \ |
|---|
| 1192 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 1193 | l1_%=: r0 = 0; \ |
|---|
| 1194 | exit; \ |
|---|
| 1195 | " : |
|---|
| 1196 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1197 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1198 | : __clobber_all); |
|---|
| 1199 | } |
|---|
| 1200 | |
|---|
| 1201 | SEC("xdp" ) |
|---|
| 1202 | __description("XDP pkt read, pkt_data < pkt_meta', corner case, good access" ) |
|---|
| 1203 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1204 | __naked void meta_corner_case_good_access_2(void) |
|---|
| 1205 | { |
|---|
| 1206 | asm volatile (" \ |
|---|
| 1207 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1208 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1209 | r1 = r2; \ |
|---|
| 1210 | r1 += 8; \ |
|---|
| 1211 | if r3 < r1 goto l0_%=; \ |
|---|
| 1212 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 1213 | l0_%=: r0 = 0; \ |
|---|
| 1214 | exit; \ |
|---|
| 1215 | " : |
|---|
| 1216 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1217 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1218 | : __clobber_all); |
|---|
| 1219 | } |
|---|
| 1220 | |
|---|
| 1221 | SEC("xdp" ) |
|---|
| 1222 | __description("XDP pkt read, pkt_data < pkt_meta', bad access 1" ) |
|---|
| 1223 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1224 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1225 | __naked void pkt_meta_bad_access_1_1(void) |
|---|
| 1226 | { |
|---|
| 1227 | asm volatile (" \ |
|---|
| 1228 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1229 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1230 | r1 = r2; \ |
|---|
| 1231 | r1 += 8; \ |
|---|
| 1232 | if r3 < r1 goto l0_%=; \ |
|---|
| 1233 | r0 = *(u64*)(r1 - 4); \ |
|---|
| 1234 | l0_%=: r0 = 0; \ |
|---|
| 1235 | exit; \ |
|---|
| 1236 | " : |
|---|
| 1237 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1238 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1239 | : __clobber_all); |
|---|
| 1240 | } |
|---|
| 1241 | |
|---|
| 1242 | SEC("xdp" ) |
|---|
| 1243 | __description("XDP pkt read, pkt_data < pkt_meta', bad access 2" ) |
|---|
| 1244 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1245 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1246 | __naked void pkt_meta_bad_access_2_2(void) |
|---|
| 1247 | { |
|---|
| 1248 | asm volatile (" \ |
|---|
| 1249 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1250 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1251 | r1 = r2; \ |
|---|
| 1252 | r1 += 8; \ |
|---|
| 1253 | if r3 < r1 goto l0_%=; \ |
|---|
| 1254 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 1255 | r0 = 0; \ |
|---|
| 1256 | exit; \ |
|---|
| 1257 | " : |
|---|
| 1258 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1259 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1260 | : __clobber_all); |
|---|
| 1261 | } |
|---|
| 1262 | |
|---|
| 1263 | SEC("xdp" ) |
|---|
| 1264 | __description("XDP pkt read, pkt_data < pkt_meta', corner case +1, good access" ) |
|---|
| 1265 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1266 | __naked void corner_case_1_good_access_12(void) |
|---|
| 1267 | { |
|---|
| 1268 | asm volatile (" \ |
|---|
| 1269 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1270 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1271 | r1 = r2; \ |
|---|
| 1272 | r1 += 9; \ |
|---|
| 1273 | if r3 < r1 goto l0_%=; \ |
|---|
| 1274 | r0 = *(u64*)(r1 - 9); \ |
|---|
| 1275 | l0_%=: r0 = 0; \ |
|---|
| 1276 | exit; \ |
|---|
| 1277 | " : |
|---|
| 1278 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1279 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1280 | : __clobber_all); |
|---|
| 1281 | } |
|---|
| 1282 | |
|---|
| 1283 | SEC("xdp" ) |
|---|
| 1284 | __description("XDP pkt read, pkt_data < pkt_meta', corner case -1, bad access" ) |
|---|
| 1285 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1286 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1287 | __naked void corner_case_1_bad_access_12(void) |
|---|
| 1288 | { |
|---|
| 1289 | asm volatile (" \ |
|---|
| 1290 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1291 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1292 | r1 = r2; \ |
|---|
| 1293 | r1 += 7; \ |
|---|
| 1294 | if r3 < r1 goto l0_%=; \ |
|---|
| 1295 | r0 = *(u64*)(r1 - 7); \ |
|---|
| 1296 | l0_%=: r0 = 0; \ |
|---|
| 1297 | exit; \ |
|---|
| 1298 | " : |
|---|
| 1299 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1300 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1301 | : __clobber_all); |
|---|
| 1302 | } |
|---|
| 1303 | |
|---|
| 1304 | SEC("xdp" ) |
|---|
| 1305 | __description("XDP pkt read, pkt_meta' >= pkt_data, good access" ) |
|---|
| 1306 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1307 | __naked void meta_pkt_data_good_access_2(void) |
|---|
| 1308 | { |
|---|
| 1309 | asm volatile (" \ |
|---|
| 1310 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1311 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1312 | r1 = r2; \ |
|---|
| 1313 | r1 += 8; \ |
|---|
| 1314 | if r1 >= r3 goto l0_%=; \ |
|---|
| 1315 | r0 = *(u32*)(r1 - 5); \ |
|---|
| 1316 | l0_%=: r0 = 0; \ |
|---|
| 1317 | exit; \ |
|---|
| 1318 | " : |
|---|
| 1319 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1320 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1321 | : __clobber_all); |
|---|
| 1322 | } |
|---|
| 1323 | |
|---|
| 1324 | SEC("xdp" ) |
|---|
| 1325 | __description("XDP pkt read, pkt_meta' >= pkt_data, corner case -1, bad access" ) |
|---|
| 1326 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1327 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1328 | __naked void corner_case_1_bad_access_13(void) |
|---|
| 1329 | { |
|---|
| 1330 | asm volatile (" \ |
|---|
| 1331 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1332 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1333 | r1 = r2; \ |
|---|
| 1334 | r1 += 6; \ |
|---|
| 1335 | if r1 >= r3 goto l0_%=; \ |
|---|
| 1336 | r0 = *(u64*)(r1 - 6); \ |
|---|
| 1337 | l0_%=: r0 = 0; \ |
|---|
| 1338 | exit; \ |
|---|
| 1339 | " : |
|---|
| 1340 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1341 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1342 | : __clobber_all); |
|---|
| 1343 | } |
|---|
| 1344 | |
|---|
| 1345 | SEC("xdp" ) |
|---|
| 1346 | __description("XDP pkt read, pkt_meta' >= pkt_data, bad access 2" ) |
|---|
| 1347 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1348 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1349 | __naked void pkt_data_bad_access_2_7(void) |
|---|
| 1350 | { |
|---|
| 1351 | asm volatile (" \ |
|---|
| 1352 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1353 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1354 | r1 = r2; \ |
|---|
| 1355 | r1 += 8; \ |
|---|
| 1356 | if r1 >= r3 goto l0_%=; \ |
|---|
| 1357 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
|---|
| 1358 | r0 = 0; \ |
|---|
| 1359 | exit; \ |
|---|
| 1360 | " : |
|---|
| 1361 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1362 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1363 | : __clobber_all); |
|---|
| 1364 | } |
|---|
| 1365 | |
|---|
| 1366 | SEC("xdp" ) |
|---|
| 1367 | __description("XDP pkt read, pkt_meta' >= pkt_data, corner case, good access" ) |
|---|
| 1368 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1369 | __naked void data_corner_case_good_access_7(void) |
|---|
| 1370 | { |
|---|
| 1371 | asm volatile (" \ |
|---|
| 1372 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1373 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1374 | r1 = r2; \ |
|---|
| 1375 | r1 += 7; \ |
|---|
| 1376 | if r1 >= r3 goto l0_%=; \ |
|---|
| 1377 | r0 = *(u64*)(r1 - 7); \ |
|---|
| 1378 | l0_%=: r0 = 0; \ |
|---|
| 1379 | exit; \ |
|---|
| 1380 | " : |
|---|
| 1381 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1382 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1383 | : __clobber_all); |
|---|
| 1384 | } |
|---|
| 1385 | |
|---|
| 1386 | SEC("xdp" ) |
|---|
| 1387 | __description("XDP pkt read, pkt_meta' >= pkt_data, corner case +1, good access" ) |
|---|
| 1388 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1389 | __naked void corner_case_1_good_access_13(void) |
|---|
| 1390 | { |
|---|
| 1391 | asm volatile (" \ |
|---|
| 1392 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1393 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1394 | r1 = r2; \ |
|---|
| 1395 | r1 += 8; \ |
|---|
| 1396 | if r1 >= r3 goto l0_%=; \ |
|---|
| 1397 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 1398 | l0_%=: r0 = 0; \ |
|---|
| 1399 | exit; \ |
|---|
| 1400 | " : |
|---|
| 1401 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1402 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1403 | : __clobber_all); |
|---|
| 1404 | } |
|---|
| 1405 | |
|---|
| 1406 | SEC("xdp" ) |
|---|
| 1407 | __description("XDP pkt read, pkt_data >= pkt_meta', corner case, good access" ) |
|---|
| 1408 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1409 | __naked void meta_corner_case_good_access_3(void) |
|---|
| 1410 | { |
|---|
| 1411 | asm volatile (" \ |
|---|
| 1412 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1413 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1414 | r1 = r2; \ |
|---|
| 1415 | r1 += 8; \ |
|---|
| 1416 | if r3 >= r1 goto l0_%=; \ |
|---|
| 1417 | goto l1_%=; \ |
|---|
| 1418 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 1419 | l1_%=: r0 = 0; \ |
|---|
| 1420 | exit; \ |
|---|
| 1421 | " : |
|---|
| 1422 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1423 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1424 | : __clobber_all); |
|---|
| 1425 | } |
|---|
| 1426 | |
|---|
| 1427 | SEC("xdp" ) |
|---|
| 1428 | __description("XDP pkt read, pkt_data >= pkt_meta', bad access 1" ) |
|---|
| 1429 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1430 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1431 | __naked void pkt_meta_bad_access_1_2(void) |
|---|
| 1432 | { |
|---|
| 1433 | asm volatile (" \ |
|---|
| 1434 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1435 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1436 | r1 = r2; \ |
|---|
| 1437 | r1 += 8; \ |
|---|
| 1438 | if r3 >= r1 goto l0_%=; \ |
|---|
| 1439 | goto l1_%=; \ |
|---|
| 1440 | l0_%=: r0 = *(u64*)(r1 - 4); \ |
|---|
| 1441 | l1_%=: r0 = 0; \ |
|---|
| 1442 | exit; \ |
|---|
| 1443 | " : |
|---|
| 1444 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1445 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1446 | : __clobber_all); |
|---|
| 1447 | } |
|---|
| 1448 | |
|---|
| 1449 | SEC("xdp" ) |
|---|
| 1450 | __description("XDP pkt read, pkt_data >= pkt_meta', bad access 2" ) |
|---|
| 1451 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1452 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1453 | __naked void pkt_meta_bad_access_2_3(void) |
|---|
| 1454 | { |
|---|
| 1455 | asm volatile (" \ |
|---|
| 1456 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1457 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1458 | r1 = r2; \ |
|---|
| 1459 | r1 += 8; \ |
|---|
| 1460 | if r3 >= r1 goto l0_%=; \ |
|---|
| 1461 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 1462 | l0_%=: r0 = 0; \ |
|---|
| 1463 | exit; \ |
|---|
| 1464 | " : |
|---|
| 1465 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1466 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1467 | : __clobber_all); |
|---|
| 1468 | } |
|---|
| 1469 | |
|---|
| 1470 | SEC("xdp" ) |
|---|
| 1471 | __description("XDP pkt read, pkt_data >= pkt_meta', corner case +1, good access" ) |
|---|
| 1472 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1473 | __naked void corner_case_1_good_access_14(void) |
|---|
| 1474 | { |
|---|
| 1475 | asm volatile (" \ |
|---|
| 1476 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1477 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1478 | r1 = r2; \ |
|---|
| 1479 | r1 += 9; \ |
|---|
| 1480 | if r3 >= r1 goto l0_%=; \ |
|---|
| 1481 | goto l1_%=; \ |
|---|
| 1482 | l0_%=: r0 = *(u64*)(r1 - 9); \ |
|---|
| 1483 | l1_%=: r0 = 0; \ |
|---|
| 1484 | exit; \ |
|---|
| 1485 | " : |
|---|
| 1486 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1487 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1488 | : __clobber_all); |
|---|
| 1489 | } |
|---|
| 1490 | |
|---|
| 1491 | SEC("xdp" ) |
|---|
| 1492 | __description("XDP pkt read, pkt_data >= pkt_meta', corner case -1, bad access" ) |
|---|
| 1493 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1494 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1495 | __naked void corner_case_1_bad_access_14(void) |
|---|
| 1496 | { |
|---|
| 1497 | asm volatile (" \ |
|---|
| 1498 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1499 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1500 | r1 = r2; \ |
|---|
| 1501 | r1 += 7; \ |
|---|
| 1502 | if r3 >= r1 goto l0_%=; \ |
|---|
| 1503 | goto l1_%=; \ |
|---|
| 1504 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
|---|
| 1505 | l1_%=: r0 = 0; \ |
|---|
| 1506 | exit; \ |
|---|
| 1507 | " : |
|---|
| 1508 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1509 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1510 | : __clobber_all); |
|---|
| 1511 | } |
|---|
| 1512 | |
|---|
| 1513 | SEC("xdp" ) |
|---|
| 1514 | __description("XDP pkt read, pkt_meta' <= pkt_data, corner case, good access" ) |
|---|
| 1515 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1516 | __naked void data_corner_case_good_access_8(void) |
|---|
| 1517 | { |
|---|
| 1518 | asm volatile (" \ |
|---|
| 1519 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1520 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1521 | r1 = r2; \ |
|---|
| 1522 | r1 += 8; \ |
|---|
| 1523 | if r1 <= r3 goto l0_%=; \ |
|---|
| 1524 | goto l1_%=; \ |
|---|
| 1525 | l0_%=: r0 = *(u64*)(r1 - 8); \ |
|---|
| 1526 | l1_%=: r0 = 0; \ |
|---|
| 1527 | exit; \ |
|---|
| 1528 | " : |
|---|
| 1529 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1530 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1531 | : __clobber_all); |
|---|
| 1532 | } |
|---|
| 1533 | |
|---|
| 1534 | SEC("xdp" ) |
|---|
| 1535 | __description("XDP pkt read, pkt_meta' <= pkt_data, bad access 1" ) |
|---|
| 1536 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1537 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1538 | __naked void pkt_data_bad_access_1_4(void) |
|---|
| 1539 | { |
|---|
| 1540 | asm volatile (" \ |
|---|
| 1541 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1542 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1543 | r1 = r2; \ |
|---|
| 1544 | r1 += 8; \ |
|---|
| 1545 | if r1 <= r3 goto l0_%=; \ |
|---|
| 1546 | goto l1_%=; \ |
|---|
| 1547 | l0_%=: r0 = *(u64*)(r1 - 4); \ |
|---|
| 1548 | l1_%=: r0 = 0; \ |
|---|
| 1549 | exit; \ |
|---|
| 1550 | " : |
|---|
| 1551 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1552 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1553 | : __clobber_all); |
|---|
| 1554 | } |
|---|
| 1555 | |
|---|
| 1556 | SEC("xdp" ) |
|---|
| 1557 | __description("XDP pkt read, pkt_meta' <= pkt_data, bad access 2" ) |
|---|
| 1558 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1559 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1560 | __naked void pkt_data_bad_access_2_8(void) |
|---|
| 1561 | { |
|---|
| 1562 | asm volatile (" \ |
|---|
| 1563 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1564 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1565 | r1 = r2; \ |
|---|
| 1566 | r1 += 8; \ |
|---|
| 1567 | if r1 <= r3 goto l0_%=; \ |
|---|
| 1568 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 1569 | l0_%=: r0 = 0; \ |
|---|
| 1570 | exit; \ |
|---|
| 1571 | " : |
|---|
| 1572 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1573 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1574 | : __clobber_all); |
|---|
| 1575 | } |
|---|
| 1576 | |
|---|
| 1577 | SEC("xdp" ) |
|---|
| 1578 | __description("XDP pkt read, pkt_meta' <= pkt_data, corner case +1, good access" ) |
|---|
| 1579 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1580 | __naked void corner_case_1_good_access_15(void) |
|---|
| 1581 | { |
|---|
| 1582 | asm volatile (" \ |
|---|
| 1583 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1584 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1585 | r1 = r2; \ |
|---|
| 1586 | r1 += 9; \ |
|---|
| 1587 | if r1 <= r3 goto l0_%=; \ |
|---|
| 1588 | goto l1_%=; \ |
|---|
| 1589 | l0_%=: r0 = *(u64*)(r1 - 9); \ |
|---|
| 1590 | l1_%=: r0 = 0; \ |
|---|
| 1591 | exit; \ |
|---|
| 1592 | " : |
|---|
| 1593 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1594 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1595 | : __clobber_all); |
|---|
| 1596 | } |
|---|
| 1597 | |
|---|
| 1598 | SEC("xdp" ) |
|---|
| 1599 | __description("XDP pkt read, pkt_meta' <= pkt_data, corner case -1, bad access" ) |
|---|
| 1600 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1601 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1602 | __naked void corner_case_1_bad_access_15(void) |
|---|
| 1603 | { |
|---|
| 1604 | asm volatile (" \ |
|---|
| 1605 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1606 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1607 | r1 = r2; \ |
|---|
| 1608 | r1 += 7; \ |
|---|
| 1609 | if r1 <= r3 goto l0_%=; \ |
|---|
| 1610 | goto l1_%=; \ |
|---|
| 1611 | l0_%=: r0 = *(u64*)(r1 - 7); \ |
|---|
| 1612 | l1_%=: r0 = 0; \ |
|---|
| 1613 | exit; \ |
|---|
| 1614 | " : |
|---|
| 1615 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1616 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1617 | : __clobber_all); |
|---|
| 1618 | } |
|---|
| 1619 | |
|---|
| 1620 | SEC("xdp" ) |
|---|
| 1621 | __description("XDP pkt read, pkt_data <= pkt_meta', good access" ) |
|---|
| 1622 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1623 | __naked void data_pkt_meta_good_access_2(void) |
|---|
| 1624 | { |
|---|
| 1625 | asm volatile (" \ |
|---|
| 1626 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1627 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1628 | r1 = r2; \ |
|---|
| 1629 | r1 += 8; \ |
|---|
| 1630 | if r3 <= r1 goto l0_%=; \ |
|---|
| 1631 | r0 = *(u32*)(r1 - 5); \ |
|---|
| 1632 | l0_%=: r0 = 0; \ |
|---|
| 1633 | exit; \ |
|---|
| 1634 | " : |
|---|
| 1635 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1636 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1637 | : __clobber_all); |
|---|
| 1638 | } |
|---|
| 1639 | |
|---|
| 1640 | SEC("xdp" ) |
|---|
| 1641 | __description("XDP pkt read, pkt_data <= pkt_meta', corner case -1, bad access" ) |
|---|
| 1642 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1643 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1644 | __naked void corner_case_1_bad_access_16(void) |
|---|
| 1645 | { |
|---|
| 1646 | asm volatile (" \ |
|---|
| 1647 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1648 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1649 | r1 = r2; \ |
|---|
| 1650 | r1 += 6; \ |
|---|
| 1651 | if r3 <= r1 goto l0_%=; \ |
|---|
| 1652 | r0 = *(u64*)(r1 - 6); \ |
|---|
| 1653 | l0_%=: r0 = 0; \ |
|---|
| 1654 | exit; \ |
|---|
| 1655 | " : |
|---|
| 1656 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1657 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1658 | : __clobber_all); |
|---|
| 1659 | } |
|---|
| 1660 | |
|---|
| 1661 | SEC("xdp" ) |
|---|
| 1662 | __description("XDP pkt read, pkt_data <= pkt_meta', bad access 2" ) |
|---|
| 1663 | __failure __msg("R1 offset is outside of the packet" ) |
|---|
| 1664 | __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1665 | __naked void pkt_meta_bad_access_2_4(void) |
|---|
| 1666 | { |
|---|
| 1667 | asm volatile (" \ |
|---|
| 1668 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1669 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1670 | r1 = r2; \ |
|---|
| 1671 | r1 += 8; \ |
|---|
| 1672 | if r3 <= r1 goto l0_%=; \ |
|---|
| 1673 | l0_%=: r0 = *(u32*)(r1 - 5); \ |
|---|
| 1674 | r0 = 0; \ |
|---|
| 1675 | exit; \ |
|---|
| 1676 | " : |
|---|
| 1677 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1678 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1679 | : __clobber_all); |
|---|
| 1680 | } |
|---|
| 1681 | |
|---|
| 1682 | SEC("xdp" ) |
|---|
| 1683 | __description("XDP pkt read, pkt_data <= pkt_meta', corner case, good access" ) |
|---|
| 1684 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1685 | __naked void meta_corner_case_good_access_4(void) |
|---|
| 1686 | { |
|---|
| 1687 | asm volatile (" \ |
|---|
| 1688 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1689 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1690 | r1 = r2; \ |
|---|
| 1691 | r1 += 7; \ |
|---|
| 1692 | if r3 <= r1 goto l0_%=; \ |
|---|
| 1693 | r0 = *(u64*)(r1 - 7); \ |
|---|
| 1694 | l0_%=: r0 = 0; \ |
|---|
| 1695 | exit; \ |
|---|
| 1696 | " : |
|---|
| 1697 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1698 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1699 | : __clobber_all); |
|---|
| 1700 | } |
|---|
| 1701 | |
|---|
| 1702 | SEC("xdp" ) |
|---|
| 1703 | __description("XDP pkt read, pkt_data <= pkt_meta', corner case +1, good access" ) |
|---|
| 1704 | __success __retval(0) __flag(BPF_F_ANY_ALIGNMENT) |
|---|
| 1705 | __naked void corner_case_1_good_access_16(void) |
|---|
| 1706 | { |
|---|
| 1707 | asm volatile (" \ |
|---|
| 1708 | r2 = *(u32*)(r1 + %[xdp_md_data_meta]); \ |
|---|
| 1709 | r3 = *(u32*)(r1 + %[xdp_md_data]); \ |
|---|
| 1710 | r1 = r2; \ |
|---|
| 1711 | r1 += 8; \ |
|---|
| 1712 | if r3 <= r1 goto l0_%=; \ |
|---|
| 1713 | r0 = *(u64*)(r1 - 8); \ |
|---|
| 1714 | l0_%=: r0 = 0; \ |
|---|
| 1715 | exit; \ |
|---|
| 1716 | " : |
|---|
| 1717 | : __imm_const(xdp_md_data, offsetof(struct xdp_md, data)), |
|---|
| 1718 | __imm_const(xdp_md_data_meta, offsetof(struct xdp_md, data_meta)) |
|---|
| 1719 | : __clobber_all); |
|---|
| 1720 | } |
|---|
| 1721 | |
|---|
| 1722 | char _license[] SEC("license" ) = "GPL" ; |
|---|
| 1723 | |
|---|
