// https://syzkaller.appspot.com/bug?id=116fe3d309b59e4276d16112ac9aa708f9ace8fc // 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 unsigned long long procid; 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 long syz_open_dev(long a0, long a1, long a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf) - 1); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } 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[1] = {0xffffffffffffffff}; void execute_one(void) { long res = 0; memcpy((void*)0x20000140, "/dev/swradio#", 14); res = syz_open_dev(0x20000140, 0, 2); if (res != -1) r[0] = res; *(uint32_t*)0x20000000 = 0x800000; *(uint32_t*)0x20000004 = 0xa; *(uint32_t*)0x20000008 = 1; *(uint32_t*)0x20000010 = 0xb; memcpy((void*)0x20000018, "\xdb\xf7\x69\xcc\x6f\x48\x89\x6c\x3a\x01\xe7\x71\xda\x50\xbb\xf1\xdc" "\xb4\xa7\x22\x1d\x91\xef\x5e\x85\xc8\x0f\xa8\xdf\x6e\xea\xdb\x67\x14" "\x0c\xfe\xb6\x96\x0f\x41\xce\xb8\x14\xf2\xb6\x79\x6d\x56\xaa\xfd\x17" "\x4a\xd9\x16\x85\x9b\xb2\xb6\x50\x14\x09\x79\xac\xbc\xc4\xc1\x6e\x98" "\x5f\x68\xeb\x68\x69\x59\xe4\x78\x20\x49\xbd\x07\x70\x6c\xc4\x34\x1c" "\xe2\xc6\x20\xc9\x5c\x55\x4f\x48\x30\xf1\x42\xa3\xbf\xd1\x93\xc1\x36" "\x00\x01\xd2\xfc\x13\xa4\xae\x67\x52\x17\x49\xfa\x77\xe7\xa5\x83\x3b" "\x23\xd6\x3e\xa8\x18\x89\x3c\x97\x80\xa8\xcd\x92\xd3\xfc\x14\xec\xa1" "\xa6\xbd\xdd\x1a\x91\xa4\x9b\x8c\x77\x50\x4f\xd2\x68\x3e\x23\x89\x65" "\x3b\x12\xc6\x0e\xe3\x95\x9c\xc5\x73\x64\x85\x33\x3d\xbc\xc5\x3e\x20" "\x7a\x1a\x63\x8d\x79\x15\x1e\x7e\xda\x35\xb7\x84\xd6\x18\x3f\x0f\xa8" "\x5d\x1c\x03\xff\x76\x1d\xc0\x2f\x19\x57\x15\x73\x34", 200); *(uint32_t*)0x200000e0 = 0; *(uint32_t*)0x200000e4 = 0; *(uint32_t*)0x200000e8 = 0; *(uint32_t*)0x200000ec = 0; *(uint32_t*)0x200000f0 = 0; *(uint32_t*)0x200000f4 = 0; *(uint32_t*)0x200000f8 = 0; *(uint32_t*)0x200000fc = 0; syscall(__NR_ioctl, r[0], 0xc100565c, 0x20000000); syscall(__NR_mmap, 0x20a00000, 0x600000, -1, 0x11, r[0], 0x20a00000); } int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }