// https://syzkaller.appspot.com/bug?id=9c57d3996565d35691fa44b2daf987259838ccce // 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, 0x10, 3, 0xc); if (res != -1) r[0] = res; *(uint64_t*)0x20d65000 = 0x20de2ff4; *(uint16_t*)0x20de2ff4 = 0x10; *(uint16_t*)0x20de2ff6 = 0; *(uint32_t*)0x20de2ff8 = 0; *(uint32_t*)0x20de2ffc = 0; *(uint32_t*)0x20d65008 = 0xc; *(uint64_t*)0x20d65010 = 0x20000000; *(uint64_t*)0x20000000 = 0x20000140; *(uint32_t*)0x20000140 = 0x24; *(uint8_t*)0x20000144 = 2; *(uint8_t*)0x20000145 = 1; *(uint16_t*)0x20000146 = -1; *(uint32_t*)0x20000148 = 0; *(uint32_t*)0x2000014c = 0; *(uint8_t*)0x20000150 = 0; *(uint8_t*)0x20000151 = 0; *(uint16_t*)0x20000152 = htobe16(0); *(uint16_t*)0x20000154 = 8; *(uint16_t*)0x20000156 = 0x15; *(uint32_t*)0x20000158 = 0; *(uint16_t*)0x2000015c = 8; *(uint16_t*)0x2000015e = 8; *(uint32_t*)0x20000160 = 0; *(uint64_t*)0x20000008 = 0x24; *(uint64_t*)0x20d65018 = 1; *(uint64_t*)0x20d65020 = 0; *(uint64_t*)0x20d65028 = 0; *(uint32_t*)0x20d65030 = 0; syscall(__NR_sendmsg, r[0], 0x20d65000, 0); res = syscall(__NR_socket, 0xa, 6, 0); if (res != -1) r[1] = res; *(uint16_t*)0x20000000 = 0xa; *(uint16_t*)0x20000002 = htobe16(0x4e20); *(uint32_t*)0x20000004 = 0; *(uint8_t*)0x20000008 = 0; *(uint8_t*)0x20000009 = 0; *(uint8_t*)0x2000000a = 0; *(uint8_t*)0x2000000b = 0; *(uint8_t*)0x2000000c = 0; *(uint8_t*)0x2000000d = 0; *(uint8_t*)0x2000000e = 0; *(uint8_t*)0x2000000f = 0; *(uint8_t*)0x20000010 = 0; *(uint8_t*)0x20000011 = 0; *(uint8_t*)0x20000012 = 0; *(uint8_t*)0x20000013 = 0; *(uint8_t*)0x20000014 = 0; *(uint8_t*)0x20000015 = 0; *(uint8_t*)0x20000016 = 0; *(uint8_t*)0x20000017 = 0; *(uint32_t*)0x20000018 = 0; syscall(__NR_bind, r[1], 0x20000000, 0x1c); res = syscall(__NR_socket, 2, 6, 0); if (res != -1) r[2] = res; syscall(__NR_listen, r[1], 6); *(uint16_t*)0x20e5c000 = 2; *(uint16_t*)0x20e5c002 = htobe16(0x4e20); *(uint32_t*)0x20e5c004 = htobe32(0x7f000001); *(uint8_t*)0x20e5c008 = 0; *(uint8_t*)0x20e5c009 = 0; *(uint8_t*)0x20e5c00a = 0; *(uint8_t*)0x20e5c00b = 0; *(uint8_t*)0x20e5c00c = 0; *(uint8_t*)0x20e5c00d = 0; *(uint8_t*)0x20e5c00e = 0; *(uint8_t*)0x20e5c00f = 0; syscall(__NR_connect, r[2], 0x20e5c000, 0x10); } int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); loop(); return 0; }