// https://syzkaller.appspot.com/bug?id=44ae4b4fa7e6c6e92aa921d2ec20ce9fbee97939 // 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 #include #include 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 kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); int i; for (i = 0; i < 100; i++) { if (waitpid(-1, status, WNOHANG | __WALL) == pid) return; usleep(1000); } DIR* dir = opendir("/sys/fs/fuse/connections"); if (dir) { for (;;) { struct dirent* ent = readdir(dir); if (!ent) break; if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) continue; char abort[300]; snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", ent->d_name); int fd = open(abort, O_WRONLY); if (fd == -1) { continue; } if (write(fd, abort, 1) < 0) { } close(fd); } closedir(dir); } else { } while (waitpid(-1, status, __WALL) != pid) { } } #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(void); #define WAIT_FLAGS __WALL static void loop(void) { 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_and_wait(pid, &status); break; } } } uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { long res = 0; res = syscall(__NR_socket, 0xa, 1, 0); if (res != -1) r[0] = res; res = syscall(__NR_socket, 0xa, 1, 0); if (res != -1) r[1] = res; *(uint16_t*)0x200000c0 = 0xa; *(uint16_t*)0x200000c2 = htobe16(0x4e22); *(uint32_t*)0x200000c4 = 0; *(uint8_t*)0x200000c8 = 0; *(uint8_t*)0x200000c9 = 0; *(uint8_t*)0x200000ca = 0; *(uint8_t*)0x200000cb = 0; *(uint8_t*)0x200000cc = 0; *(uint8_t*)0x200000cd = 0; *(uint8_t*)0x200000ce = 0; *(uint8_t*)0x200000cf = 0; *(uint8_t*)0x200000d0 = 0; *(uint8_t*)0x200000d1 = 0; *(uint8_t*)0x200000d2 = 0; *(uint8_t*)0x200000d3 = 0; *(uint8_t*)0x200000d4 = 0; *(uint8_t*)0x200000d5 = 0; *(uint8_t*)0x200000d6 = 0; *(uint8_t*)0x200000d7 = 0; *(uint32_t*)0x200000d8 = 0; syscall(__NR_bind, r[1], 0x200000c0, 0x1c); syscall(__NR_listen, r[1], 0); *(uint16_t*)0x20000080 = 0xa; *(uint16_t*)0x20000082 = htobe16(0x4e22); *(uint32_t*)0x20000084 = 0; *(uint64_t*)0x20000088 = htobe64(0); *(uint64_t*)0x20000090 = htobe64(1); *(uint32_t*)0x20000098 = 0; syscall(__NR_sendto, r[0], 0, 0, 0x20000003, 0x20000080, 0x1c); memcpy((void*)0x20000080, "tls", 4); syscall(__NR_setsockopt, r[0], 6, 0x1f, 0x20000080, 0x410); *(uint16_t*)0x20000100 = 0x303; *(uint16_t*)0x20000102 = 0x33; syscall(__NR_setsockopt, r[0], 0x11a, 1, 0x20000100, 0x28); memcpy((void*)0x200003c0, "P", 1); syscall(__NR_sendto, r[0], 0x200003c0, 1, 0, 0, 0); res = syscall(__NR_socket, 0x26, 5, 0); if (res != -1) r[2] = res; *(uint16_t*)0x20000000 = 0x26; memcpy((void*)0x20000002, "\x61\x65\x61\x64\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 14); *(uint32_t*)0x20000010 = 0; *(uint32_t*)0x20000014 = 0; memcpy((void*)0x20000018, "\x70\x63\x72\x79\x70\x74\x28\x67\x63\x6d\x28\x61\x65\x73\x29\x29\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 64); syscall(__NR_bind, r[2], 0x20000000, 0x58); } int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); loop(); return 0; }