// https://syzkaller.appspot.com/bug?id=95abfa7feeb1b111f6991798f0587771d69674a5 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms() { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } #define SYZ_HAVE_SETUP_TEST 1 static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); } #define SYZ_HAVE_RESET_TEST 1 static void reset_test() { int fd; for (fd = 3; fd < 30; fd++) close(fd); } static void execute_one(); #define WAIT_FLAGS __WALL static void loop() { int iter; for (iter = 0;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { setup_test(); execute_one(); reset_test(); 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(-pid, SIGKILL); kill(pid, SIGKILL); while (waitpid(-1, &status, WAIT_FLAGS) != pid) { } break; } } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one() { long res = 0; res = syscall(__NR_socket, 0xa, 2, 0); if (res != -1) r[0] = res; res = syscall(__NR_socket, 0x18, 1, 1); if (res != -1) r[1] = res; *(uint16_t*)0x205fafd2 = 0x18; *(uint32_t*)0x205fafd4 = 1; *(uint32_t*)0x205fafd8 = 0; *(uint32_t*)0x205fafdc = r[0]; *(uint16_t*)0x205fafe0 = 2; *(uint16_t*)0x205fafe2 = htobe16(0); *(uint32_t*)0x205fafe4 = htobe32(0xe0000002); *(uint8_t*)0x205fafe8 = 0; *(uint8_t*)0x205fafe9 = 0; *(uint8_t*)0x205fafea = 0; *(uint8_t*)0x205fafeb = 0; *(uint8_t*)0x205fafec = 0; *(uint8_t*)0x205fafed = 0; *(uint8_t*)0x205fafee = 0; *(uint8_t*)0x205fafef = 0; *(uint32_t*)0x205faff0 = 4; *(uint32_t*)0x205faff4 = 0; *(uint32_t*)0x205faff8 = 0; *(uint32_t*)0x205faffc = 0; syscall(__NR_connect, r[1], 0x205fafd2, 0x2e); *(uint64_t*)0x200017c0 = 0x200000c0; *(uint16_t*)0x200000c0 = 0x306; memcpy((void*)0x200000c2, "\xe2\x8e\xc1\x20\xf9\x6f", 6); *(uint32_t*)0x200017c8 = 0x80; *(uint64_t*)0x200017d0 = 0x20001480; *(uint64_t*)0x20001480 = 0x20000140; *(uint64_t*)0x20001488 = 0; *(uint64_t*)0x20001490 = 0x20000040; *(uint64_t*)0x20001498 = 0; *(uint64_t*)0x200014a0 = 0x20001140; *(uint64_t*)0x200014a8 = 0; *(uint64_t*)0x200014b0 = 0x20001200; *(uint64_t*)0x200014b8 = 0; *(uint64_t*)0x200014c0 = 0x20001300; *(uint64_t*)0x200014c8 = 0; *(uint64_t*)0x200014d0 = 0x20001440; *(uint64_t*)0x200014d8 = 0; *(uint64_t*)0x200017d8 = 6; *(uint64_t*)0x200017e0 = 0x20001880; *(uint64_t*)0x200017e8 = 0; *(uint32_t*)0x200017f0 = 0x40; *(uint32_t*)0x200017f8 = 0x181; syscall(__NR_sendmmsg, r[0], 0x200017c0, 1, 0x40001); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); loop(); return 0; }