// https://syzkaller.appspot.com/bug?id=5001bc551dea02e50692c43989f472c8ba9c7691 // 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; } } } } #ifndef __NR_mmap #define __NR_mmap 192 #endif #ifndef __NR_socket #define __NR_socket 359 #endif #ifndef __NR_bind #define __NR_bind 361 #endif #ifndef __NR_setsockopt #define __NR_setsockopt 366 #endif #ifndef __NR_sendto #define __NR_sendto 369 #endif #ifndef __NR_ioctl #define __NR_ioctl 54 #endif #undef __NR_mmap #define __NR_mmap __NR_mmap2 long r[2]; void test() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0); r[0] = syscall(__NR_socket, 0xa, 1, 0); *(uint16_t*)0x20f65000 = 0xa; *(uint16_t*)0x20f65002 = htobe16(0x4e20); *(uint32_t*)0x20f65004 = 0; *(uint64_t*)0x20f65008 = htobe64(0); *(uint64_t*)0x20f65010 = htobe64(1); *(uint32_t*)0x20f65018 = 0; syscall(__NR_bind, r[0], 0x20f65000, 0x1c); *(uint32_t*)0x204aaffc = 6; syscall(__NR_setsockopt, r[0], 0x29, 0xb, 0x204aaffc, 4); *(uint16_t*)0x2006ffe4 = 0xa; *(uint16_t*)0x2006ffe6 = htobe16(0x4e20); *(uint32_t*)0x2006ffe8 = 0; *(uint64_t*)0x2006ffec = htobe64(0); *(uint64_t*)0x2006fff4 = htobe64(1); *(uint32_t*)0x2006fffc = 0; syscall(__NR_sendto, r[0], 0x207a8fff, 0, 0xfffffffe, 0x2006ffe4, 0x1c); memcpy((void*)0x206f9000, "tls", 4); syscall(__NR_setsockopt, r[0], 6, 0x1f, 0x206f9000, 4); r[1] = syscall(__NR_socket, 2, 0x80001, 0); memcpy((void*)0x2003b000, "\x6c\x6f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16); *(uint16_t*)0x2003b010 = 0xfffd; syscall(__NR_ioctl, r[1], 0x8914, 0x2003b000); } int main() { for (;;) { loop(); } }