// https://syzkaller.appspot.com/bug?id=892ad90d74b324e4b35fa23c4ac6602b76b59573 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_bpf #define __NR_bpf 321 #endif #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } *(uint32_t*)0x20000180 = 0xb; *(uint32_t*)0x20000184 = 7; *(uint32_t*)0x20000188 = 0x10001; *(uint32_t*)0x2000018c = 9; *(uint32_t*)0x20000190 = 1; *(uint32_t*)0x20000194 = -1; *(uint32_t*)0x20000198 = 0; memset((void*)0x2000019c, 0, 16); *(uint32_t*)0x200001ac = 0; *(uint32_t*)0x200001b0 = -1; *(uint32_t*)0x200001b4 = 0; *(uint32_t*)0x200001b8 = 0; *(uint32_t*)0x200001bc = 0; *(uint64_t*)0x200001c0 = 0; res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000180ul, /*size=*/0x48ul); if (res != -1) r[0] = res; *(uint32_t*)0x200000c0 = 0x11; *(uint32_t*)0x200000c4 = 0xd; *(uint64_t*)0x200000c8 = 0x20000280; *(uint8_t*)0x20000280 = 0x18; STORE_BY_BITMASK(uint8_t, , 0x20000281, 0, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x20000281, 0, 4, 4); *(uint16_t*)0x20000282 = 0; *(uint32_t*)0x20000284 = 0; *(uint8_t*)0x20000288 = 0; *(uint8_t*)0x20000289 = 0; *(uint16_t*)0x2000028a = 0; *(uint32_t*)0x2000028c = 0; *(uint8_t*)0x20000290 = 0x85; *(uint8_t*)0x20000291 = 0; *(uint16_t*)0x20000292 = 0; *(uint32_t*)0x20000294 = 0x6d; *(uint8_t*)0x20000298 = 0x18; STORE_BY_BITMASK(uint8_t, , 0x20000299, 1, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x20000299, 1, 4, 4); *(uint16_t*)0x2000029a = 0; *(uint32_t*)0x2000029c = r[0]; *(uint8_t*)0x200002a0 = 0; *(uint8_t*)0x200002a1 = 0; *(uint16_t*)0x200002a2 = 0; *(uint32_t*)0x200002a4 = 0; STORE_BY_BITMASK(uint8_t, , 0x200002a8, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200002a8, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200002a8, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200002a9, 8, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200002a9, 0, 4, 4); *(uint16_t*)0x200002aa = 0; *(uint32_t*)0x200002ac = 0; STORE_BY_BITMASK(uint8_t, , 0x200002b0, 3, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200002b0, 3, 3, 2); STORE_BY_BITMASK(uint8_t, , 0x200002b0, 3, 5, 3); STORE_BY_BITMASK(uint8_t, , 0x200002b1, 0xa, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200002b1, 8, 4, 4); *(uint16_t*)0x200002b2 = 0xfff8; *(uint32_t*)0x200002b4 = 0; STORE_BY_BITMASK(uint8_t, , 0x200002b8, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200002b8, 1, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200002b8, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200002b9, 2, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200002b9, 0xa, 4, 4); *(uint16_t*)0x200002ba = 0; *(uint32_t*)0x200002bc = 0; STORE_BY_BITMASK(uint8_t, , 0x200002c0, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200002c0, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200002c0, 0, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200002c1, 2, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200002c1, 0, 4, 4); *(uint16_t*)0x200002c2 = 0; *(uint32_t*)0x200002c4 = 0xfffffff8; STORE_BY_BITMASK(uint8_t, , 0x200002c8, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200002c8, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200002c8, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200002c9, 3, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200002c9, 0, 4, 4); *(uint16_t*)0x200002ca = 0; *(uint32_t*)0x200002cc = 8; STORE_BY_BITMASK(uint8_t, , 0x200002d0, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200002d0, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200002d0, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200002d1, 4, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200002d1, 0, 4, 4); *(uint16_t*)0x200002d2 = 0; *(uint32_t*)0x200002d4 = 0; *(uint8_t*)0x200002d8 = 0x85; *(uint8_t*)0x200002d9 = 0; *(uint16_t*)0x200002da = 0; *(uint32_t*)0x200002dc = 3; *(uint8_t*)0x200002e0 = 0x95; *(uint8_t*)0x200002e1 = 0; *(uint16_t*)0x200002e2 = 0; *(uint32_t*)0x200002e4 = 0; *(uint64_t*)0x200000d0 = 0x20000040; memcpy((void*)0x20000040, "GPL\000", 4); *(uint32_t*)0x200000d8 = 0; *(uint32_t*)0x200000dc = 0; *(uint64_t*)0x200000e0 = 0; *(uint32_t*)0x200000e8 = 0; *(uint32_t*)0x200000ec = 0; memset((void*)0x200000f0, 0, 16); *(uint32_t*)0x20000100 = 0; *(uint32_t*)0x20000104 = 0; *(uint32_t*)0x20000108 = -1; *(uint32_t*)0x2000010c = 0; *(uint64_t*)0x20000110 = 0; *(uint32_t*)0x20000118 = 0; *(uint32_t*)0x2000011c = 0; *(uint64_t*)0x20000120 = 0; *(uint32_t*)0x20000128 = 0; *(uint32_t*)0x2000012c = 0; *(uint32_t*)0x20000130 = 0; *(uint32_t*)0x20000134 = 0; *(uint64_t*)0x20000138 = 0; *(uint64_t*)0x20000140 = 0; *(uint32_t*)0x20000148 = 0; *(uint32_t*)0x2000014c = 0; res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x90ul); if (res != -1) r[1] = res; *(uint64_t*)0x200001c0 = 0x20000180; memcpy((void*)0x20000180, "kfree\000", 6); *(uint32_t*)0x200001c8 = r[1]; syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200001c0ul, /*size=*/0x10ul); *(uint32_t*)0x200000c0 = 0xb; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 0xc; *(uint32_t*)0x200000cc = 3; *(uint32_t*)0x200000d0 = 1; *(uint32_t*)0x200000d4 = 1; *(uint32_t*)0x200000d8 = 0; memset((void*)0x200000dc, 0, 16); *(uint32_t*)0x200000ec = 0; *(uint32_t*)0x200000f0 = -1; *(uint32_t*)0x200000f4 = 0; *(uint32_t*)0x200000f8 = 0; *(uint32_t*)0x200000fc = 0; *(uint64_t*)0x20000100 = 0; res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000c0ul, /*size=*/0x48ul); if (res != -1) r[2] = res; *(uint64_t*)0x20000240 = 0; *(uint64_t*)0x20000248 = 0; *(uint64_t*)0x20000250 = 0x200000c0; *(uint64_t*)0x20000258 = 0x20000140; *(uint32_t*)0x20000260 = 5; *(uint32_t*)0x20000264 = r[2]; *(uint64_t*)0x20000268 = 0; *(uint64_t*)0x20000270 = 0; syscall(__NR_bpf, /*cmd=*/0x1aul, /*arg=*/0x20000240ul, /*size=*/0x38ul); return 0; }