// https://syzkaller.appspot.com/bug?id=bda19bf6b14e7fddccf28ac6f0205c7df6d8c32e // 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 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 (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } res = syscall(SYS_socket, /*domain=*/0x1cul, /*type=SOCK_SEQPACKET*/ 5ul, /*proto=*/0x84); if (res != -1) r[0] = res; *(uint64_t*)0x20000280 = 0x200000c0; *(uint8_t*)0x200000c0 = 0x1c; *(uint8_t*)0x200000c1 = 0x1c; *(uint16_t*)0x200000c2 = htobe16(0x4e20); *(uint32_t*)0x200000c4 = 0; *(uint8_t*)0x200000c8 = 0xfe; *(uint8_t*)0x200000c9 = 0x80; memset((void*)0x200000ca, 0, 12); *(uint8_t*)0x200000d6 = 0; *(uint8_t*)0x200000d7 = 0xaa; *(uint32_t*)0x200000d8 = 6; *(uint32_t*)0x20000288 = 0x1c; *(uint64_t*)0x20000290 = 0x20000140; *(uint64_t*)0x20000140 = 0; *(uint64_t*)0x20000148 = 0; *(uint64_t*)0x20000150 = 0x20000300; memcpy( (void*)0x20000300, "\x36\x34\xfb\x0c\x67\xdc\x34\x30\xf8\x55\x36\xd1\xb9\x58\x46\x7d\xe7\x32" "\xe3\xd6\x77\x9a\x8f\x56\x73\x0a\x31\x9e\x83\xcf\x5a\x37\x81\x0d\xfe\x37" "\x27\xbc\x6f\xec\x31\x12\x75\xa8\x6b\xa1\x3d\xbb\x0c\xc6\x00\x62\x8e\x5d" "\x2c\xc5\x1d\x30\x84\x19\x4c\x11\xb7\x6a\xa0\x54\x05\x9f\xb9\x77\xc2\x4f" "\xf3\x36\xf5\x33\x2b\x4c\x7c\xf5\x02\x88\xc8\xb7\x7b\xfc\xbb\x3b\x10\xad" "\xba\x45\x18\x9c\x27\x84\x47\x97\xc7\x3a\x4a\x0b\x01\x5f\x41\x47\x9f\x30" "\x5d\xbe\xb8\xcd\x8b\x2d\x66\xc1\x5b\x17\xc1\x6d\xa5\xe6\x0c\x5c\x52\x44" "\x8d\x49\x1b\xe4\x6f\x1a\x7f\x79\x98\xb1\xe7\xca\x70\x3e\xf4\xad\xf4\x48" "\x59\xc3\x34\x4a\x7e\xbb\x7d\x0e\xce\x98\x68\x78\xd4\x87\xe4\x3e\x5c\xb9" "\xa7\xa5\xfb\x12\x2f\x02\x86\x8c\xee\xac\x81\xdf\x03\xa7\xa2\x2b\x0c\x12" "\x4d\x59\x3a\xbe\x37\xb7\x49\x7c\x1d\x6d\xcf\x2d\x5c\xc4\x84\x97\x6d\x67" "\x7f\x8f\xd8\x3e\x90\xa3\xd7\x43\x57\x89", 208); *(uint64_t*)0x20000158 = 0xd0; *(uint32_t*)0x20000298 = 2; *(uint64_t*)0x200002a0 = 0; *(uint32_t*)0x200002a8 = 0; *(uint32_t*)0x200002ac = 0x18c; syscall(SYS_sendmsg, /*fd=*/r[0], /*msg=*/0x20000280ul, /*f=MSG_EOR|MSG_DONTROUTE|MSG_OOB*/ 0xdul); } int main(void) { syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul, /*fd=*/-1, /*offset=*/0ul); const char* reason; (void)reason; loop(); return 0; }