// https://syzkaller.appspot.com/bug?id=6e511f97443d681b8917c6258d6463b28b36e8c9 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS___clone #define SYS___clone 287 #endif #ifndef SYS_ioctl #define SYS_ioctl 54 #endif #ifndef SYS_mmap #define SYS_mmap 197 #endif #ifndef SYS_socket #define SYS_socket 394 #endif static unsigned long long procid; static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; memcpy((void*)0x200000c0, "\xdb\x61\xd3\x3c\x83\x71\xe0\x00\xde\x73\x89\x6f\x19\x4c\xf9\x45\x62" "\x54\xcc\x0d\xbc\xb8\xd8\xd0\x08\xce\x36\xdb\x2d\x48\x67\xbe\xd1\xc4" "\xd3\x7e\x8c\x2e\x7e\x5e\xcd\xbb\xca\xba\x18\xb8\x31\xc4\x2b\x20\x05" "\x11\x77\xd5\x79\x06\xbd\x92\x40\x7e\x48\x8e\x80\x3a\x52\x76\xaf\x5f" "\x16\xca\xf1\x7a\x7e\x46\x87\x15\xb2\x82\x63\x95\x4e\xb8\x54\x15\x1e" "\xae\x2f\x98\x72\x62\xac\x38\x2b\x4a\xbf\x87\xca\xf0\x8c\x1c\xe4\xfa" "\x46\x39\xfa\x2e\x94\xf2\x89\x25\x83\x50\x0f\x16\x48\x8b\xfb\x94\x23" "\x5c\x94\xe3\x81\x35\x61\x74\xea\xbf\xdd\x3e\xdc\x74\xad\x38\x35\x8c" "\x87\x6d\xf3\x5f\x35\xdf\x2e\x33\xa5\xd1\x16\xfa\x44\x20\xcd\x9d\x7f" "\xbd\xe6\x84\x49\x9a\xc0\x77\x41\xbc\xf0\xa2\x12\x33\x70\xc6\x5e\x2d" "\xf4\x7d\x4b\xe4\x44\x60\xae\xf5\x9b\x91\x29\x56\x04\x62\xd8\x50\xba" "\x51\xf1\x4b\x90\x2a\xc8\x9f\xa4\xa6\x4f\xf2\x3b\x81\x19\x2f\xac\x51" "\x76\xa0\x54\x03\xac\x18\x42\xaf\xee\x24\xf4\x3e\xe3\x92\xf2\x6e\x24" "\x21\x2d\x77\x21\x5f\x2a\x0d\xfb\x39\xb0\x23\x73\x3b\x52\xb5\x1f\xa0" "\x29\xff\xa0\x7e\x48\x33\xb8\x05\x54\x20\xd9\xb4\x7e\x56", 252); syscall(SYS___clone, 0x2800ul, 0x200000c0ul); res = syscall(SYS_socket, 0x10ul, 2ul, 0); if (res != -1) r[0] = res; *(uint64_t*)0x20000180 = 0x8000000000000032; syscall(SYS_ioctl, r[0], 0x8020690cul, 0x20000180ul); res = syscall(SYS_socket, 0x18ul, 2ul, 0); if (res != -1) r[1] = res; *(uint64_t*)0x20000000 = 0; syscall(SYS_ioctl, r[1], 0xc0106926ul, 0x20000000ul); } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }