// https://syzkaller.appspot.com/bug?id=6e7f1eb4803437067dc059b34b171d2a00da8b36 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf)); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } static void test(); void loop() { while (1) { test(); } } long r[56]; void test() { memset(r, -1, sizeof(r)); r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); memcpy((void*)0x20571ff7, "\x2f\x64\x65\x76\x2f\x73\x67\x23\x00", 9); r[2] = syz_open_dev(0x20571ff7ul, 0x0ul, 0x0ul); r[3] = syscall(__NR_ioctl, r[2], 0x6000020000001276ul, 0x205dd000ul); memcpy((void*)0x20fa6000, "\x2f\x64\x65\x76\x2f\x73\x67\x23\x00", 9); r[5] = syz_open_dev(0x20fa6000ul, 0x0ul, 0x0ul); *(uint32_t*)0x2084cf90 = (uint32_t)0x0; *(uint16_t*)0x2084cf94 = (uint16_t)0x0; *(uint8_t*)0x2084cf96 = (uint8_t)0x0; *(uint8_t*)0x2084cf97 = (uint8_t)0x0; *(uint8_t*)0x2084cf98 = (uint8_t)0x0; *(uint8_t*)0x2084cf99 = (uint8_t)0x1; *(uint8_t*)0x2084cf9a = (uint8_t)0x0; *(uint8_t*)0x2084cf9b = (uint8_t)0x0; *(uint8_t*)0x2084cf9c = (uint8_t)0x0; *(uint8_t*)0x2084cf9d = (uint8_t)0x0; *(uint8_t*)0x2084cf9e = (uint8_t)0x80000000; *(uint8_t*)0x2084cf9f = (uint8_t)0x0; *(uint64_t*)0x2084cfa0 = (uint64_t)0x0; *(uint32_t*)0x2084cfa8 = (uint32_t)0x0; *(uint16_t*)0x2084cfac = (uint16_t)0x0; *(uint8_t*)0x2084cfae = (uint8_t)0x800000000000; *(uint8_t*)0x2084cfaf = (uint8_t)0x0; *(uint8_t*)0x2084cfb0 = (uint8_t)0x0; *(uint8_t*)0x2084cfb1 = (uint8_t)0x0; *(uint8_t*)0x2084cfb2 = (uint8_t)0x0; *(uint8_t*)0x2084cfb3 = (uint8_t)0x5; *(uint8_t*)0x2084cfb4 = (uint8_t)0xfffffffffffffffc; *(uint8_t*)0x2084cfb5 = (uint8_t)0xfffffffffffffffc; *(uint8_t*)0x2084cfb6 = (uint8_t)0x0; *(uint8_t*)0x2084cfb7 = (uint8_t)0x0; *(uint64_t*)0x2084cfb8 = (uint64_t)0x4; *(uint32_t*)0x2084cfc0 = (uint32_t)0x0; *(uint16_t*)0x2084cfc4 = (uint16_t)0x3; *(uint8_t*)0x2084cfc6 = (uint8_t)0x2; *(uint8_t*)0x2084cfc7 = (uint8_t)0x8000; *(uint8_t*)0x2084cfc8 = (uint8_t)0x0; *(uint8_t*)0x2084cfc9 = (uint8_t)0x1; *(uint8_t*)0x2084cfca = (uint8_t)0x0; *(uint8_t*)0x2084cfcb = (uint8_t)0x0; *(uint8_t*)0x2084cfcc = (uint8_t)0x0; *(uint8_t*)0x2084cfcd = (uint8_t)0x0; *(uint8_t*)0x2084cfce = (uint8_t)0x0; *(uint8_t*)0x2084cfcf = (uint8_t)0x0; *(uint64_t*)0x2084cfd0 = (uint64_t)0x0; *(uint32_t*)0x2084cfd8 = (uint32_t)0x0; *(uint32_t*)0x2084cfdc = (uint32_t)0x0; *(uint32_t*)0x2084cfe0 = (uint32_t)0x0; *(uint32_t*)0x2084cfe4 = (uint32_t)0x0; *(uint32_t*)0x2084cfe8 = (uint32_t)0x0; *(uint32_t*)0x2084cfec = (uint32_t)0x0; *(uint32_t*)0x2084cff0 = (uint32_t)0x0; *(uint32_t*)0x2084cff4 = (uint32_t)0x0; *(uint32_t*)0x2084cff8 = (uint32_t)0x0; *(uint32_t*)0x2084cffc = (uint32_t)0x0; r[55] = syscall(__NR_ioctl, r[5], 0xc0481273ul, 0x2084cf90ul); } int main() { int i; for (i = 0; i < 8; i++) { if (fork() == 0) { loop(); return 0; } } sleep(1000000); return 0; }