// https://syzkaller.appspot.com/bug?id=66b74c32b983d729c65e9a5620c2b6b0ab4e7062 // 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 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 < 5 * 1000) continue; kill_and_wait(pid, &status); break; } } } #ifndef SYS___mount50 #define SYS___mount50 410 #endif #ifndef SYS_mkdir #define SYS_mkdir 136 #endif #ifndef SYS_mmap #define SYS_mmap 197 #endif void execute_one(void) { memcpy((void*)0x20000000, "./file0\000", 8); syscall(SYS_mkdir, 0x20000000ul, 0ul); memcpy((void*)0x200000c0, "coda\000", 5); memcpy((void*)0x20000100, "./file0\000", 8); memcpy( (void*)0x20000240, "\xcf\x45\xd6\x9e\xe3\x17\x38\x5b\x65\xa0\x5f\x8e\xa9\x50\xfb\x1e\x1d\x96" "\x6c\x15\x13\xee\x51\xa2\x13\x9c\x03\x8e\x6e\x01\xcc\x8f\x47\x01\x21\xc8" "\xb1\x52\x1c\x5a\xd5\x3e\xdd\xba\x85\xf2\xf1\x9e\x82\x47\xfc\x14\x66\x86" "\x85\x5c\x7e\x5a\x58\x4d\xa0\x67\x74\xcd\xd9\x86\x13\xa5\xe0\x80\xdc\x62" "\x6f\xec\x36\x13\x90\x2a\xfd\xa6\x77\x4e\xd0\x8f\x74\x4b\x67\x5e\xf7\xf5" "\xff\xaa\xfc\x3d\xe4\x9f\x4f\xfa\x7e\x01\x63\x2b\x6d\xb8\x37\x51\x4a\xcc" 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"\xb6\x5f\x02\xa5\x44\x20\x05\x19\x1a\x1f\x3d\xbe\x92\x48\x51\xdf\x0b\xf5" "\xc9\xf6\xb5\x66\xbd\xfb\x28\x51\xde\x94\x59\x89\xe7\x77\x86\x05\xe8\x89" "\x97\x06\xbc\x9a\x68\x92\x1f\xd5\x73\x5e\xb3\x89\xd6\x41\xdc\xc4\xb8\x7f" "\xd0\xe1\x58\x90\xf2\x3b\x81\x50\x05\x74\x21\xca\x91\x37\xb2\x68\x71\x2a" "\xd5\x5d\xd1\x60\x6f\x47\xe9\x71\x55\x8f\x79\xf5\x94\x18\x29\x71\x65\xb6" "\x59\x34\x6c\x66\x6f\x81\x95\x64\x99\x01\xee\x8d\x5d\x6c\x63\xb5\xdd\x88" "\xb0\xcf\x04\x74\x76\x94\xd5\x30\x27\x9a\xc4\x3e\x3a\xcd\x18\x60\xc8\x1c" "\x3a\x78\x9d\x4d\x8e\x38\x32\x96\xdd\x31\xb0\xdf\x07\x0a\x6b\x06\xb8\xe0" "\xe3\xb6\x37\xe7\xa7\xb9\xef\xde\x06\x6f\x48\x27\x6c\x50\x43\xc8\xaf\xea" "\xbf\xc1\x04\xf7\xca\x6d\xf9\xde\x19\xb3\x1d\x9b\xdf\xe8\xdf\x86\x8c\x74" "\xae\x85\xdf\xeb\x02\x45\x61\x30\x66\xf7\xfd\x40\xd7\x3c\x9f\x22\x58\x89" "\x7f\x10\xf0\x10\xb5\xd3\x95\xca\x04\xb6\xbb\x66\x11\x07\x1b\x04\x87\xe0" "\xa3\x42\x57\x21\xd4\xf8\x2d\x22\xef\x73\xfc\x07\x01\x4d\xfb\x47\x99\x5c" "\x2f\x9e\x00\x9d\xfa\x4d\x8e\xeb\x05\x9e", 4096); syscall(SYS___mount50, 0x200000c0ul, 0x20000100ul, 0x1000000ul, 0x20000240ul, 0x1000ul); } 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; }