// 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*)0x20000080 = 0x18; *(uint32_t*)0x20000082 = 1; *(uint32_t*)0x20000086 = 0; *(uint32_t*)0x2000008a = r[0]; *(uint16_t*)0x2000008e = 2; *(uint16_t*)0x20000090 = htobe16(0); *(uint32_t*)0x20000092 = htobe32(0xe0000002); *(uint8_t*)0x20000096 = 0; *(uint8_t*)0x20000097 = 0; *(uint8_t*)0x20000098 = 0; *(uint8_t*)0x20000099 = 0; *(uint8_t*)0x2000009a = 0; *(uint8_t*)0x2000009b = 0; *(uint8_t*)0x2000009c = 0; *(uint8_t*)0x2000009d = 0; *(uint32_t*)0x2000009e = 4; *(uint32_t*)0x200000a2 = 0; *(uint32_t*)0x200000a6 = 0; *(uint32_t*)0x200000aa = 0; syscall(__NR_connect, r[1], 0x20000080, 0x2e); *(uint64_t*)0x200080c0 = 0x20007f40; *(uint16_t*)0x20007f40 = 0x10; *(uint16_t*)0x20007f42 = 0; *(uint32_t*)0x20007f44 = 0; *(uint32_t*)0x20007f48 = 0x10088; *(uint32_t*)0x200080c8 = 0xc; *(uint64_t*)0x200080d0 = 0x20008080; *(uint64_t*)0x20008080 = 0x20007fc0; *(uint32_t*)0x20007fc0 = 0xa4; *(uint16_t*)0x20007fc4 = 0; *(uint16_t*)0x20007fc6 = 4; *(uint32_t*)0x20007fc8 = 0x70bd25; *(uint32_t*)0x20007fcc = 0x25dfdbfd; *(uint8_t*)0x20007fd0 = 0x10; *(uint8_t*)0x20007fd1 = 0; *(uint16_t*)0x20007fd2 = 0; *(uint16_t*)0x20007fd4 = 0x58; *(uint16_t*)0x20007fd6 = 1; *(uint16_t*)0x20007fd8 = 0xc; *(uint16_t*)0x20007fda = 6; memcpy((void*)0x20007fdc, "lblcr", 6); *(uint16_t*)0x20007fe4 = 8; *(uint16_t*)0x20007fe6 = 0xb; memcpy((void*)0x20007fe8, "sip", 4); *(uint16_t*)0x20007fec = 8; *(uint16_t*)0x20007fee = 8; *(uint32_t*)0x20007ff0 = 0xffffffbe; *(uint16_t*)0x20007ff4 = 8; *(uint16_t*)0x20007ff6 = 4; *(uint16_t*)0x20007ff8 = htobe16(0x4e20); *(uint16_t*)0x20007ffc = 0xc; *(uint16_t*)0x20007ffe = 7; *(uint32_t*)0x20008000 = 0x27; *(uint32_t*)0x20008004 = 0x14; *(uint16_t*)0x20008008 = 8; *(uint16_t*)0x2000800a = 2; *(uint16_t*)0x2000800c = 0xaf; *(uint16_t*)0x20008010 = 0x14; *(uint16_t*)0x20008012 = 3; *(uint32_t*)0x20008014 = htobe32(0x7f000001); *(uint16_t*)0x20008024 = 8; *(uint16_t*)0x20008026 = 1; *(uint16_t*)0x20008028 = 0; *(uint16_t*)0x2000802c = 4; *(uint16_t*)0x2000802e = 2; *(uint16_t*)0x20008030 = 0x2c; *(uint16_t*)0x20008032 = 2; *(uint16_t*)0x20008034 = 8; *(uint16_t*)0x20008036 = 8; *(uint32_t*)0x20008038 = 0x94; *(uint16_t*)0x2000803c = 8; *(uint16_t*)0x2000803e = 9; *(uint32_t*)0x20008040 = 0x249c; *(uint16_t*)0x20008044 = 8; *(uint16_t*)0x20008046 = 4; *(uint32_t*)0x20008048 = 1; *(uint16_t*)0x2000804c = 8; *(uint16_t*)0x2000804e = 6; *(uint32_t*)0x20008050 = 2; *(uint16_t*)0x20008054 = 8; *(uint16_t*)0x20008056 = 2; *(uint16_t*)0x20008058 = htobe16(0x4e20); *(uint16_t*)0x2000805c = 8; *(uint16_t*)0x2000805e = 6; *(uint32_t*)0x20008060 = 4; *(uint64_t*)0x20008088 = 0xa4; *(uint64_t*)0x200080d8 = 1; *(uint64_t*)0x200080e0 = 0; *(uint64_t*)0x200080e8 = 0; *(uint32_t*)0x200080f0 = 0x800; syscall(__NR_sendmsg, r[0], 0x200080c0, 0x41); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); loop(); return 0; }