| // autogenerated by syzkaller (https://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| |
| #include <dirent.h> |
| #include <endian.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <stdbool.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/prctl.h> |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| 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 bool write_file(const char* file, const char* what, ...) |
| { |
| char buf[1024]; |
| va_list args; |
| va_start(args, what); |
| vsnprintf(buf, sizeof(buf), what, args); |
| va_end(args); |
| buf[sizeof(buf) - 1] = 0; |
| int len = strlen(buf); |
| int fd = open(file, O_WRONLY | O_CLOEXEC); |
| if (fd == -1) |
| return false; |
| if (write(fd, buf, len) != len) { |
| int err = errno; |
| close(fd); |
| errno = err; |
| return false; |
| } |
| close(fd); |
| return true; |
| } |
| |
| 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) { |
| } |
| } |
| |
| static void setup_test() |
| { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| write_file("/proc/self/oom_score_adj", "1000"); |
| } |
| |
| 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(); |
| 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) |
| { |
| intptr_t res = 0; |
| res = syscall(__NR_socket, 0x10ul, 3ul, 0xcul); |
| if (res != -1) |
| r[0] = res; |
| *(uint64_t*)0x20000300 = 0; |
| *(uint32_t*)0x20000308 = 0; |
| *(uint64_t*)0x20000310 = 0x200002c0; |
| *(uint64_t*)0x200002c0 = 0x20000440; |
| *(uint32_t*)0x20000440 = 0x54; |
| *(uint8_t*)0x20000444 = 2; |
| *(uint8_t*)0x20000445 = 6; |
| *(uint16_t*)0x20000446 = 1; |
| *(uint32_t*)0x20000448 = 0; |
| *(uint32_t*)0x2000044c = 0; |
| *(uint8_t*)0x20000450 = 0; |
| *(uint8_t*)0x20000451 = 0; |
| *(uint16_t*)0x20000452 = htobe16(0); |
| *(uint16_t*)0x20000454 = 9; |
| *(uint16_t*)0x20000456 = 2; |
| memcpy((void*)0x20000458, "syz2\000", 5); |
| *(uint16_t*)0x20000460 = 0xd; |
| *(uint16_t*)0x20000462 = 3; |
| memcpy((void*)0x20000464, "hash:net\000", 9); |
| *(uint16_t*)0x20000470 = 0xc; |
| STORE_BY_BITMASK(uint16_t, , 0x20000472, 7, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x20000473, 0, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x20000473, 1, 7, 1); |
| *(uint16_t*)0x20000474 = 8; |
| STORE_BY_BITMASK(uint16_t, , 0x20000476, 6, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x20000477, 1, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x20000477, 0, 7, 1); |
| *(uint32_t*)0x20000478 = htobe32(3); |
| *(uint16_t*)0x2000047c = 5; |
| *(uint16_t*)0x2000047e = 1; |
| *(uint8_t*)0x20000480 = 7; |
| *(uint16_t*)0x20000484 = 5; |
| *(uint16_t*)0x20000486 = 4; |
| *(uint8_t*)0x20000488 = 0; |
| *(uint16_t*)0x2000048c = 5; |
| *(uint16_t*)0x2000048e = 5; |
| *(uint8_t*)0x20000490 = 2; |
| *(uint64_t*)0x200002c8 = 0x54; |
| *(uint64_t*)0x20000318 = 1; |
| *(uint64_t*)0x20000320 = 0; |
| *(uint64_t*)0x20000328 = 0; |
| *(uint32_t*)0x20000330 = 0; |
| syscall(__NR_sendmsg, r[0], 0x20000300ul, 0ul); |
| syscall(__NR_sendmsg, -1, 0ul, 4ul); |
| res = syscall(__NR_socket, 0x10ul, 3ul, 0xcul); |
| if (res != -1) |
| r[1] = res; |
| *(uint64_t*)0x20000200 = 0; |
| *(uint32_t*)0x20000208 = 0; |
| *(uint64_t*)0x20000210 = 0x200001c0; |
| *(uint64_t*)0x200001c0 = 0x20000340; |
| *(uint32_t*)0x20000340 = 0x70; |
| *(uint8_t*)0x20000344 = 0xb; |
| *(uint8_t*)0x20000345 = 6; |
| *(uint16_t*)0x20000346 = 1; |
| *(uint32_t*)0x20000348 = 0; |
| *(uint32_t*)0x2000034c = 0; |
| *(uint8_t*)0x20000350 = 2; |
| *(uint8_t*)0x20000351 = 0; |
| *(uint16_t*)0x20000352 = htobe16(0); |
| *(uint16_t*)0x20000354 = 9; |
| *(uint16_t*)0x20000356 = 2; |
| memcpy((void*)0x20000358, "syz2\000", 5); |
| *(uint16_t*)0x20000360 = 5; |
| *(uint16_t*)0x20000362 = 1; |
| *(uint8_t*)0x20000364 = 7; |
| *(uint16_t*)0x20000368 = 0x48; |
| STORE_BY_BITMASK(uint16_t, , 0x2000036a, 7, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x2000036b, 0, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x2000036b, 1, 7, 1); |
| *(uint16_t*)0x2000036c = 0xc; |
| STORE_BY_BITMASK(uint16_t, , 0x2000036e, 0x18, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x2000036f, 1, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x2000036f, 0, 7, 1); |
| *(uint64_t*)0x20000370 = htobe64(0xc7); |
| *(uint16_t*)0x20000378 = 0xc; |
| STORE_BY_BITMASK(uint16_t, , 0x2000037a, 0x18, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x2000037b, 1, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x2000037b, 0, 7, 1); |
| *(uint64_t*)0x2000037c = htobe64(1); |
| *(uint16_t*)0x20000384 = 8; |
| STORE_BY_BITMASK(uint16_t, , 0x20000386, 9, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x20000387, 1, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x20000387, 0, 7, 1); |
| *(uint32_t*)0x20000388 = htobe32(9); |
| *(uint16_t*)0x2000038c = 0x18; |
| STORE_BY_BITMASK(uint16_t, , 0x2000038e, 2, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x2000038f, 0, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x2000038f, 1, 7, 1); |
| *(uint16_t*)0x20000390 = 0x14; |
| STORE_BY_BITMASK(uint16_t, , 0x20000392, 2, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x20000393, 1, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x20000393, 0, 7, 1); |
| *(uint8_t*)0x20000394 = 0xfe; |
| *(uint8_t*)0x20000395 = 0x80; |
| *(uint8_t*)0x20000396 = 0; |
| *(uint8_t*)0x20000397 = 0; |
| *(uint8_t*)0x20000398 = 0; |
| *(uint8_t*)0x20000399 = 0; |
| *(uint8_t*)0x2000039a = 0; |
| *(uint8_t*)0x2000039b = 0; |
| *(uint8_t*)0x2000039c = 0; |
| *(uint8_t*)0x2000039d = 0; |
| *(uint8_t*)0x2000039e = 0; |
| *(uint8_t*)0x2000039f = 0; |
| *(uint8_t*)0x200003a0 = 0; |
| *(uint8_t*)0x200003a1 = 0; |
| *(uint8_t*)0x200003a2 = 0; |
| *(uint8_t*)0x200003a3 = 0x16; |
| *(uint16_t*)0x200003a4 = 0xc; |
| STORE_BY_BITMASK(uint16_t, , 0x200003a6, 0x19, 0, 14); |
| STORE_BY_BITMASK(uint16_t, , 0x200003a7, 1, 6, 1); |
| STORE_BY_BITMASK(uint16_t, , 0x200003a7, 0, 7, 1); |
| *(uint64_t*)0x200003a8 = htobe64(8); |
| *(uint64_t*)0x200001c8 = 0x70; |
| *(uint64_t*)0x20000218 = 1; |
| *(uint64_t*)0x20000220 = 0; |
| *(uint64_t*)0x20000228 = 0; |
| *(uint32_t*)0x20000230 = 0; |
| syscall(__NR_sendmsg, r[1], 0x20000200ul, 0ul); |
| syscall(__NR_sendmsg, -1, 0ul, 0ul); |
| res = syscall(__NR_socket, 0x10ul, 3ul, 0xcul); |
| if (res != -1) |
| r[2] = res; |
| syscall(__NR_sendmsg, r[2], 0ul, 0ul); |
| } |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0); |
| for (procid = 0; procid < 4; procid++) { |
| if (fork() == 0) { |
| loop(); |
| } |
| } |
| sleep(1000000); |
| return 0; |
| } |