// 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; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) 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; } } } void execute_one(void) { *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x20000304 = 0x70; *(uint8_t*)0x20000308 = 0; *(uint8_t*)0x20000309 = 0; *(uint8_t*)0x2000030a = 0; *(uint8_t*)0x2000030b = 0; *(uint32_t*)0x2000030c = 0; *(uint64_t*)0x20000310 = 0x4000; *(uint64_t*)0x20000318 = 0x22; *(uint64_t*)0x20000320 = 0; STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 0, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 1, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 2, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 3, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 4, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 5, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 6, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 7, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 8, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 9, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 10, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 11, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 12, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 13, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 14, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 15, 2); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 17, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 18, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 19, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 3, 20, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 21, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 22, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 23, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 24, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 25, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 26, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0x80000, 27, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 28, 1); STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 29, 35); *(uint32_t*)0x20000330 = 0; *(uint32_t*)0x20000334 = 0; *(uint64_t*)0x20000338 = 0; *(uint64_t*)0x20000340 = 0; *(uint64_t*)0x20000348 = 0; *(uint64_t*)0x20000350 = 0; *(uint32_t*)0x20000358 = 0; *(uint32_t*)0x2000035c = 0; *(uint64_t*)0x20000360 = 0; *(uint32_t*)0x20000368 = 0; *(uint16_t*)0x2000036c = 0; *(uint16_t*)0x2000036e = 0; syscall(__NR_perf_event_open, 0x20000300, 0, 0, -1, 0); } int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); for (procid = 0; procid < 8; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }