// https://syzkaller.appspot.com/bug?id=4462682cd32aee8ff03a43c8b9be3963743bc506 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #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[31]; void* thr(void* arg) { switch ((long)arg) { case 0: r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); break; case 1: memcpy((void*)0x20007ff7, "\x2f\x64\x65\x76\x2f\x73\x67\x23\x00", 9); r[2] = syz_open_dev(0x20007ff7ul, 0x0ul, 0x0ul); break; case 2: *(uint64_t*)0x20a85fc8 = (uint64_t)0x20000000; *(uint32_t*)0x20a85fd0 = (uint32_t)0x0; *(uint64_t*)0x20a85fd8 = (uint64_t)0x205f4ff0; *(uint64_t*)0x20a85fe0 = (uint64_t)0x1; *(uint64_t*)0x20a85fe8 = (uint64_t)0x2000a000; *(uint64_t*)0x20a85ff0 = (uint64_t)0x0; *(uint32_t*)0x20a85ff8 = (uint32_t)0x0; *(uint64_t*)0x205f4ff0 = (uint64_t)0x20007000; *(uint64_t*)0x205f4ff8 = (uint64_t)0x1b; *(uint32_t*)0x20007000 = (uint32_t)0x1b; *(uint16_t*)0x20007004 = (uint16_t)0x0; *(uint16_t*)0x20007006 = (uint16_t)0x0; *(uint32_t*)0x20007008 = (uint32_t)0x9; *(uint32_t*)0x2000700c = (uint32_t)0x0; memcpy((void*)0x20007010, "\xac\x1b\x91\x00\x00\x00\x00\x00\x00\x00\x81", 11); r[18] = syscall(__NR_sendmsg, 0xfffffffffffffffful, 0x20a85fc8ul, 0x0ul); break; case 3: *(uint32_t*)0x20e03000 = (uint32_t)0x2; *(uint16_t*)0x20e03004 = (uint16_t)0x0; *(uint16_t*)0x20e03006 = (uint16_t)0x85a; r[22] = syscall(__NR_setsockopt, r[2], 0x84ul, 0x16ul, 0x20e03000ul, 0x8ul); break; case 4: *(uint64_t*)0x20cb8fd0 = (uint64_t)0x201e7000; *(uint64_t*)0x20cb8fd8 = (uint64_t)0x1000; *(uint64_t*)0x20cb8fe0 = (uint64_t)0x20e50000; *(uint64_t*)0x20cb8fe8 = (uint64_t)0x0; *(uint64_t*)0x20cb8ff0 = (uint64_t)0x2056ffc4; *(uint64_t*)0x20cb8ff8 = (uint64_t)0x0; r[29] = syscall(__NR_readv, r[2], 0x20cb8fd0ul, 0x3ul); break; case 5: r[30] = syscall(__NR_ioctl, r[2], 0x2285ul, 0x20007000ul); break; } return 0; } void test() { long i; pthread_t th[12]; memset(r, -1, sizeof(r)); srand(getpid()); for (i = 0; i < 6; i++) { pthread_create(&th[i], 0, thr, (void*)i); usleep(rand() % 10000); } for (i = 0; i < 6; i++) { pthread_create(&th[6 + i], 0, thr, (void*)i); if (rand() % 2) usleep(rand() % 10000); } usleep(rand() % 100000); } int main() { loop(); return 0; }