// https://syzkaller.appspot.com/bug?id=21cfee420f987629e5cef6076b81482de2f663a8 // 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[2]; void test() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xe78000, 3, 0x32, -1, 0); r[0] = syscall(__NR_socket, 0xa, 2, 0); r[1] = syscall(__NR_socket, 0x18, 1, 1); *(uint16_t*)0x20e71000 = 0x18; *(uint32_t*)0x20e71002 = 1; *(uint32_t*)0x20e71006 = 0; *(uint32_t*)0x20e7100a = r[0]; *(uint16_t*)0x20e7100e = 3; *(uint16_t*)0x20e71010 = 0; *(uint16_t*)0x20e71012 = 3; *(uint16_t*)0x20e71014 = 0; *(uint16_t*)0x20e71016 = 0xa; *(uint16_t*)0x20e71018 = htobe16(0x4e22); *(uint32_t*)0x20e7101a = 3; *(uint8_t*)0x20e7101e = 0xfe; *(uint8_t*)0x20e7101f = 0x80; *(uint8_t*)0x20e71020 = 0; *(uint8_t*)0x20e71021 = 0; *(uint8_t*)0x20e71022 = 0; *(uint8_t*)0x20e71023 = 0; *(uint8_t*)0x20e71024 = 0; *(uint8_t*)0x20e71025 = 0; *(uint8_t*)0x20e71026 = 0; *(uint8_t*)0x20e71027 = 0; *(uint8_t*)0x20e71028 = 0; *(uint8_t*)0x20e71029 = 0; *(uint8_t*)0x20e7102a = 0; *(uint8_t*)0x20e7102b = 0; *(uint8_t*)0x20e7102c = 0; *(uint8_t*)0x20e7102d = 0xbb; *(uint32_t*)0x20e7102e = 4; syscall(__NR_connect, r[1], 0x20e71000, 0x32); *(uint64_t*)0x20b00000 = 0; *(uint64_t*)0x20b00008 = 0; *(uint16_t*)0x20b00010 = 0x1f; *(uint16_t*)0x20b00012 = 0x8001; *(uint32_t*)0x20b00014 = 7; syscall(__NR_write, r[0], 0x20b00000, 0x18); } int main() { for (;;) { loop(); } }