// https://syzkaller.appspot.com/bug?id=3d4fdc415d285b4de0dbf5709b4f2bb451a0a382 // 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 (;;) { 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; res = syscall(SYS_socket, 0x1cul, 1ul, 0x84); if (res != -1) r[0] = res; *(uint8_t*)0x20000240 = 0x1c; *(uint8_t*)0x20000241 = 0x1c; *(uint16_t*)0x20000242 = htobe16(0x4e23); *(uint32_t*)0x20000244 = 0; *(uint64_t*)0x20000248 = htobe64(0); *(uint64_t*)0x20000250 = htobe64(1); *(uint32_t*)0x20000258 = 0; syscall(SYS_bind, r[0], 0x20000240ul, 0x1cul); *(uint8_t*)0x20000080 = 0x1c; *(uint8_t*)0x20000081 = 0x1c; *(uint16_t*)0x20000082 = htobe16(0x4e23); *(uint32_t*)0x20000084 = 0; *(uint64_t*)0x20000088 = htobe64(0); *(uint64_t*)0x20000090 = htobe64(1); *(uint32_t*)0x20000098 = 0; syscall(SYS_connect, r[0], 0x20000080ul, 0x1cul); *(uint32_t*)0x20000000 = r[0]; *(uint64_t*)0x20000008 = 0; *(uint64_t*)0x20000010 = 0x200002c0; *(uint64_t*)0x20000018 = 0; *(uint32_t*)0x20000020 = 0; *(uint32_t*)0x20000024 = 0; *(uint64_t*)0x20000028 = 0; *(uint32_t*)0x20000030 = 0; *(uint32_t*)0x20000034 = 0; *(uint64_t*)0x20000038 = 0; *(uint64_t*)0x20000040 = 0; *(uint64_t*)0x20000048 = 0; *(uint32_t*)0x20000050 = 0; *(uint32_t*)0x20000054 = 0; *(uint32_t*)0x20000058 = 0; *(uint32_t*)0x20000060 = 0; syscall(SYS_aio_write, 0x20000000ul); res = syscall(SYS_fcntl, r[0], 0ul, r[0]); if (res != -1) r[1] = res; *(uint32_t*)0x20001540 = 0; memset((void*)0x20001544, 6, 1); syscall(SYS_setsockopt, r[1], 0x84, 0x901, 0x20001540ul, 8ul); } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); loop(); return 0; }