// https://syzkaller.appspot.com/bug?id=13abcb2c9eea7e408f8e25d3a9ae401754723024 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include __attribute__((noreturn)) static void doexit(int status) { volatile unsigned i; syscall(__NR_exit_group, status); for (i = 0;; i++) { } } #include #include const int kFailStatus = 67; const int kRetryStatus = 69; static void fail(const char* msg, ...) { int e = errno; va_list args; va_start(args, msg); vfprintf(stderr, msg, args); va_end(args); fprintf(stderr, " (errno %d)\n", e); doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus); } static uint64_t current_time_ms() { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) fail("clock_gettime failed"); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void test(); void loop() { int iter; for (iter = 0;; iter++) { int pid = fork(); if (pid < 0) fail("loop fork failed"); if (pid == 0) { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); test(); doexit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { int res = waitpid(-1, &status, __WALL | WNOHANG); if (res == pid) break; usleep(1000); if (current_time_ms() - start > 5 * 1000) { kill(-pid, SIGKILL); kill(pid, SIGKILL); while (waitpid(-1, &status, __WALL) != pid) { } break; } } } } long r[3]; void test() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xe75000, 3, 0x32, -1, 0); r[0] = syscall(__NR_socket, 0xa, 2, 0); r[1] = syscall(__NR_dup, r[0]); *(uint16_t*)0x20d2bff0 = 2; *(uint16_t*)0x20d2bff2 = htobe16(0x4e20); *(uint8_t*)0x20d2bff4 = 0xac; *(uint8_t*)0x20d2bff5 = 0x14; *(uint8_t*)0x20d2bff6 = 0; *(uint8_t*)0x20d2bff7 = 0xaa; *(uint8_t*)0x20d2bff8 = 0; *(uint8_t*)0x20d2bff9 = 0; *(uint8_t*)0x20d2bffa = 0; *(uint8_t*)0x20d2bffb = 0; *(uint8_t*)0x20d2bffc = 0; *(uint8_t*)0x20d2bffd = 0; *(uint8_t*)0x20d2bffe = 0; *(uint8_t*)0x20d2bfff = 0; syscall(__NR_connect, r[1], 0x20d2bff0, 0x10); r[2] = syscall(__NR_socket, 0x18, 1, 1); *(uint16_t*)0x205fafd2 = 0x18; *(uint32_t*)0x205fafd4 = 1; *(uint32_t*)0x205fafd8 = 0; *(uint32_t*)0x205fafdc = r[0]; *(uint16_t*)0x205fafe0 = 2; *(uint16_t*)0x205fafe2 = htobe16(0x4e21); *(uint32_t*)0x205fafe4 = htobe32(0xe0000002); *(uint8_t*)0x205fafe8 = 0; *(uint8_t*)0x205fafe9 = 0; *(uint8_t*)0x205fafea = 0; *(uint8_t*)0x205fafeb = 0; *(uint8_t*)0x205fafec = 0; *(uint8_t*)0x205fafed = 0; *(uint8_t*)0x205fafee = 0; *(uint8_t*)0x205fafef = 0; *(uint32_t*)0x205faff0 = 4; *(uint32_t*)0x205faff4 = 0; *(uint32_t*)0x205faff8 = 2; *(uint32_t*)0x205faffc = 0; syscall(__NR_connect, r[2], 0x205fafd2, 0x2e); } int main() { for (;;) { loop(); } }