// 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 #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; } 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(); #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_and_wait(pid, &status); 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*)0x20000180 = 0x18; *(uint32_t*)0x20000182 = 1; *(uint32_t*)0x20000186 = 0; *(uint32_t*)0x2000018a = r[0]; *(uint16_t*)0x2000018e = 2; *(uint16_t*)0x20000190 = htobe16(0); *(uint32_t*)0x20000192 = htobe32(0xe0000002); *(uint8_t*)0x20000196 = 0; *(uint8_t*)0x20000197 = 0; *(uint8_t*)0x20000198 = 0; *(uint8_t*)0x20000199 = 0; *(uint8_t*)0x2000019a = 0; *(uint8_t*)0x2000019b = 0; *(uint8_t*)0x2000019c = 0; *(uint8_t*)0x2000019d = 0; *(uint32_t*)0x2000019e = 4; *(uint32_t*)0x200001a2 = 0; *(uint32_t*)0x200001a6 = 0; *(uint32_t*)0x200001aa = 0; syscall(__NR_connect, r[1], 0x20000180, 0x2e); *(uint16_t*)0x20000100 = 0xa; *(uint16_t*)0x20000102 = htobe16(0x4e23); *(uint32_t*)0x20000104 = 0x20; *(uint8_t*)0x20000108 = 0xfe; *(uint8_t*)0x20000109 = 0x80; *(uint8_t*)0x2000010a = 0; *(uint8_t*)0x2000010b = 0; *(uint8_t*)0x2000010c = 0; *(uint8_t*)0x2000010d = 0; *(uint8_t*)0x2000010e = 0; *(uint8_t*)0x2000010f = 0; *(uint8_t*)0x20000110 = 0; *(uint8_t*)0x20000111 = 0; *(uint8_t*)0x20000112 = 0; *(uint8_t*)0x20000113 = 0; *(uint8_t*)0x20000114 = 0; *(uint8_t*)0x20000115 = 0; *(uint8_t*)0x20000116 = 0; *(uint8_t*)0x20000117 = 0xbb; *(uint32_t*)0x20000118 = 1; syscall(__NR_sendto, r[0], 0x20000300, 0, 4, 0x20000100, 0x1c); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); loop(); return 0; }