// 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)) { } syscall(SYS_socket, /*domain=*/0x1cul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0x84); *(uint64_t*)0x20000140 = 0x20000207fffffdc; *(uint64_t*)0x20000148 = 0x400000000000001; syscall(SYS_cap_rights_limit, /*fd=*/-1, /*rights=*/0x20000140ul); syscall(SYS_cap_rights_limit, /*fd=*/-1, /*rights=*/0ul); syscall(SYS_cap_rights_limit, /*fd=*/-1, /*rights=*/0ul); syscall(SYS_ksem_open, /*idp=*/0ul, /*name=*/0ul, /*oflag=*/0ul, /*mode=*/0ul, /*value=*/0); res = syscall(SYS_socket, /*domain=*/0x1cul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0x84); if (res != -1) r[0] = res; syscall(SYS_bind, /*fd=*/r[0], /*addr=*/0ul, /*addrlen=*/0ul); *(uint32_t*)0x20000140 = 0x100003; syscall(SYS_setsockopt, /*fd=*/r[0], /*level=*/0x84, /*opt=*/0x1b, /*val=*/0x20000140ul, /*len=*/4ul); syscall(SYS_sendto, /*fd=*/r[0], /*buf=*/0ul, /*len=*/0ul, /*f=MSG_DONTWAIT|MSG_OOB*/ 0x81ul, /*addr=*/0ul, /*addrlen=*/0ul); memcpy((void*)0x20000100, "\xf6\x31\x61\x6a\x68\x6d\xd4\xe0\xc6\x00\xe5\xac\xdb\x29\x97\x36\xd0" "\xe5\x54\x9b\xc8\xfe\xa3\xd9\xde\xae\xea\xef\x6c\xdf\xf9\x99\x9d\x08" "\x8e\xa5\xcf\xb1\x3e\x32\x9e\xc3\x54\x57\x48", 45); *(uint8_t*)0x20000280 = 0x1c; *(uint8_t*)0x20000281 = 0x1c; *(uint16_t*)0x20000282 = htobe16(0x4e22); *(uint32_t*)0x20000284 = 0; *(uint8_t*)0x20000288 = 0xfe; *(uint8_t*)0x20000289 = 0x80; memset((void*)0x2000028a, 0, 12); *(uint8_t*)0x20000296 = 0; *(uint8_t*)0x20000297 = 0xbb; *(uint32_t*)0x20000298 = 7; syscall(SYS_sendto, /*fd=*/r[0], /*buf=*/0x20000100ul, /*len=*/0xffffff1aul, /*f=MSG_EOF*/ 0x100ul, /*addr=*/0x20000280ul, /*addrlen=*/0x1cul); } 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; }