| // autogenerated by syzkaller (https://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| |
| #include <dirent.h> |
| #include <endian.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <pthread.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> |
| |
| #include <linux/futex.h> |
| |
| 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 void thread_start(void* (*fn)(void*), void* arg) |
| { |
| pthread_t th; |
| pthread_attr_t attr; |
| pthread_attr_init(&attr); |
| pthread_attr_setstacksize(&attr, 128 << 10); |
| int i; |
| for (i = 0; i < 100; i++) { |
| if (pthread_create(&th, &attr, fn, arg) == 0) { |
| pthread_attr_destroy(&attr); |
| return; |
| } |
| if (errno == EAGAIN) { |
| usleep(50); |
| continue; |
| } |
| break; |
| } |
| exit(1); |
| } |
| |
| typedef struct { |
| int state; |
| } event_t; |
| |
| static void event_init(event_t* ev) |
| { |
| ev->state = 0; |
| } |
| |
| static void event_reset(event_t* ev) |
| { |
| ev->state = 0; |
| } |
| |
| static void event_set(event_t* ev) |
| { |
| if (ev->state) |
| exit(1); |
| __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); |
| syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); |
| } |
| |
| static void event_wait(event_t* ev) |
| { |
| while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) |
| syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); |
| } |
| |
| static int event_isset(event_t* ev) |
| { |
| return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); |
| } |
| |
| static int event_timedwait(event_t* ev, uint64_t timeout) |
| { |
| uint64_t start = current_time_ms(); |
| uint64_t now = start; |
| for (;;) { |
| uint64_t remain = timeout - (now - start); |
| struct timespec ts; |
| ts.tv_sec = remain / 1000; |
| ts.tv_nsec = (remain % 1000) * 1000 * 1000; |
| syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); |
| if (__atomic_load_n(&ev->state, __ATOMIC_RELAXED)) |
| return 1; |
| now = current_time_ms(); |
| if (now - start > timeout) |
| return 0; |
| } |
| } |
| |
| 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"); |
| } |
| |
| struct thread_t { |
| int created, call; |
| event_t ready, done; |
| }; |
| |
| static struct thread_t threads[16]; |
| static void execute_call(int call); |
| static int running; |
| |
| static void* thr(void* arg) |
| { |
| struct thread_t* th = (struct thread_t*)arg; |
| for (;;) { |
| event_wait(&th->ready); |
| event_reset(&th->ready); |
| execute_call(th->call); |
| __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); |
| event_set(&th->done); |
| } |
| return 0; |
| } |
| |
| static void execute_one(void) |
| { |
| int i, call, thread; |
| int collide = 0; |
| again: |
| for (call = 0; call < 8; call++) { |
| for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); |
| thread++) { |
| struct thread_t* th = &threads[thread]; |
| if (!th->created) { |
| th->created = 1; |
| event_init(&th->ready); |
| event_init(&th->done); |
| event_set(&th->done); |
| thread_start(thr, th); |
| } |
| if (!event_isset(&th->done)) |
| continue; |
| event_reset(&th->done); |
| th->call = call; |
| __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); |
| event_set(&th->ready); |
| if (collide && (call % 2) == 0) |
| break; |
| event_timedwait(&th->done, 45); |
| break; |
| } |
| } |
| for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) |
| sleep_ms(1); |
| if (!collide) { |
| collide = 1; |
| goto again; |
| } |
| } |
| |
| 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_call(int call) |
| { |
| intptr_t res; |
| switch (call) { |
| case 0: |
| *(uint32_t*)0x200001c0 = 6; |
| *(uint16_t*)0x200001c4 = 0x118; |
| *(uint16_t*)0x200001c6 = 0xfa00; |
| *(uint32_t*)0x200001c8 = 0; |
| *(uint32_t*)0x200001cc = 0; |
| memcpy((void*)0x200001d0, |
| "\xb7\x9e\x28\x44\x14\xa8\xee\x60\x40\x37\xb3\xd1\xcc\x43\x33\xa5" |
| "\xa4\x56\xbb\x4c\x57\x1f\x0f\x69\x25\xeb\x44\x49\xb5\x84\x0c\x37" |
| "\xac\xa9\x9e\x4e\xe9\x5c\x12\xef\x24\x02\xf7\x9e\xd5\x6c\x67\x27" |
| "\x59\x45\xc0\x80\x0b\xa4\x96\x13\x77\x44\xb5\x99\x4a\x7b\x09\x3c" |
| "\x0f\x5e\x33\x17\x93\xee\x44\xf0\x7b\x8f\x37\xe5\x16\xaa\x1d\x0f" |
| "\x63\xb7\xdf\x40\xd8\x8f\x1f\xa4\x46\xdb\xfe\xa5\x8c\x05\xad\xd0" |
| "\xd0\x05\x40\x76\x13\xca\x61\x78\xaf\xd7\x1a\xd1\x47\x7f\x0d\xd1" |
| "\xee\x0e\x8d\xa5\x5e\x66\xa4\x03\xcb\x38\x3b\xe9\x01\xe7\xf7\x77" |
| "\x21\x0e\x72\xed\x01\x23\x83\x45\xe8\x18\xb6\x75\xcf\x43\x99\xd8" |
| "\x8b\x02\x3b\x49\xa7\x4b\x3d\x8c\x06\x8c\x71\x7c\x89\x02\x08\xdd" |
| "\x0f\x4e\x78\xe3\x76\x17\xbc\xc1\xf0\x2a\xc6\xa6\x12\xe6\x74\x21" |
| "\x3b\x54\xd1\x24\x6a\x6b\x0f\xbd\x24\x35\xa7\xe6\x2d\xef\x1e\x78" |
| "\x7c\x19\xf4\x4c\xec\x1a\xb4\xdf\x0d\xfa\x37\xbc\x1e\xdf\x9f\xd3" |
| "\x06\x41\x77\xc6\xca\xc5\xe1\xca\x4d\x40\xf0\x1c\xbe\xac\x6e\x5a" |
| "\x28\x2d\x9e\x9f\x7b\x28\xd5\xad\x1c\x04\x26\xc1\x68\x36\x85\x38" |
| "\xa9\x14\xb1\xed\x35\x82\x8c\xf2\xfa\x3a\xfd\xc4\xd7\x15\x47\x92", |
| 256); |
| *(uint8_t*)0x200002d0 = 0; |
| *(uint8_t*)0x200002d1 = 0; |
| *(uint8_t*)0x200002d2 = 0; |
| *(uint8_t*)0x200002d3 = 0; |
| *(uint8_t*)0x200002d4 = 0; |
| *(uint8_t*)0x200002d5 = 0; |
| *(uint8_t*)0x200002d6 = 0; |
| *(uint8_t*)0x200002d7 = 1; |
| *(uint32_t*)0x200002d8 = -1; |
| *(uint32_t*)0x200002dc = 0; |
| syscall(__NR_write, -1, 0x200001c0ul, 0x120ul); |
| break; |
| case 1: |
| memcpy((void*)0x20000180, "/dev/infiniband/rdma_cm\000", 24); |
| res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000180ul, 2ul, 0ul); |
| if (res != -1) |
| r[0] = res; |
| break; |
| case 2: |
| res = syscall(__NR_socket, 0x1eul, 2ul, 0); |
| if (res != -1) |
| r[1] = res; |
| break; |
| case 3: |
| *(uint64_t*)0x20000240 = 0x200000c0; |
| *(uint16_t*)0x200000c0 = 0x1e; |
| *(uint8_t*)0x200000c2 = 1; |
| *(uint8_t*)0x200000c3 = 0; |
| *(uint32_t*)0x200000c4 = 1; |
| *(uint32_t*)0x200000c8 = 0; |
| *(uint32_t*)0x200000cc = 2; |
| *(uint32_t*)0x20000248 = 0x10; |
| *(uint64_t*)0x20000250 = 0; |
| *(uint64_t*)0x20000258 = 0; |
| *(uint64_t*)0x20000260 = 0; |
| *(uint64_t*)0x20000268 = 0; |
| *(uint32_t*)0x20000270 = 0; |
| syscall(__NR_sendmsg, r[1], 0x20000240ul, 0ul); |
| break; |
| case 4: |
| *(uint16_t*)0x20000300 = 0xa; |
| *(uint16_t*)0x20000302 = htobe16(0x4e24); |
| *(uint32_t*)0x20000304 = htobe32(0x805); |
| *(uint8_t*)0x20000308 = 0; |
| *(uint8_t*)0x20000309 = 0; |
| *(uint8_t*)0x2000030a = 0; |
| *(uint8_t*)0x2000030b = 0; |
| *(uint8_t*)0x2000030c = 0; |
| *(uint8_t*)0x2000030d = 0; |
| *(uint8_t*)0x2000030e = 0; |
| *(uint8_t*)0x2000030f = 0; |
| *(uint8_t*)0x20000310 = 0; |
| *(uint8_t*)0x20000311 = 0; |
| *(uint8_t*)0x20000312 = 0; |
| *(uint8_t*)0x20000313 = 0; |
| *(uint8_t*)0x20000314 = 0; |
| *(uint8_t*)0x20000315 = 0; |
| *(uint8_t*)0x20000316 = 0; |
| *(uint8_t*)0x20000317 = 0; |
| *(uint32_t*)0x20000318 = 2; |
| *(uint16_t*)0x2000031c = 2; |
| *(uint16_t*)0x2000031e = htobe16(0x4e24); |
| *(uint8_t*)0x20000320 = 0xac; |
| *(uint8_t*)0x20000321 = 0x14; |
| *(uint8_t*)0x20000322 = 0x14; |
| *(uint8_t*)0x20000323 = 0xaa; |
| *(uint16_t*)0x2000032c = 0xa; |
| *(uint16_t*)0x2000032e = htobe16(0x4e20); |
| *(uint32_t*)0x20000330 = htobe32(0); |
| *(uint8_t*)0x20000334 = 0xfe; |
| *(uint8_t*)0x20000335 = 0x80; |
| *(uint8_t*)0x20000336 = 0; |
| *(uint8_t*)0x20000337 = 0; |
| *(uint8_t*)0x20000338 = 0; |
| *(uint8_t*)0x20000339 = 0; |
| *(uint8_t*)0x2000033a = 0; |
| *(uint8_t*)0x2000033b = 0; |
| *(uint8_t*)0x2000033c = 0; |
| *(uint8_t*)0x2000033d = 0; |
| *(uint8_t*)0x2000033e = 0; |
| *(uint8_t*)0x2000033f = 0; |
| *(uint8_t*)0x20000340 = 0; |
| *(uint8_t*)0x20000341 = 0; |
| *(uint8_t*)0x20000342 = 0; |
| *(uint8_t*)0x20000343 = 0xbb; |
| *(uint32_t*)0x20000344 = 4; |
| *(uint16_t*)0x20000348 = 2; |
| *(uint16_t*)0x2000034a = htobe16(0x4e23); |
| *(uint8_t*)0x2000034c = 0xac; |
| *(uint8_t*)0x2000034d = 0x14; |
| *(uint8_t*)0x2000034e = 0x14; |
| *(uint8_t*)0x2000034f = 0xaa; |
| *(uint16_t*)0x20000358 = 0xa; |
| *(uint16_t*)0x2000035a = htobe16(0x4e21); |
| *(uint32_t*)0x2000035c = htobe32(2); |
| *(uint8_t*)0x20000360 = 0xfe; |
| *(uint8_t*)0x20000361 = 0x88; |
| *(uint8_t*)0x20000362 = 0; |
| *(uint8_t*)0x20000363 = 0; |
| *(uint8_t*)0x20000364 = 0; |
| *(uint8_t*)0x20000365 = 0; |
| *(uint8_t*)0x20000366 = 0; |
| *(uint8_t*)0x20000367 = 0; |
| *(uint8_t*)0x20000368 = 0; |
| *(uint8_t*)0x20000369 = 0; |
| *(uint8_t*)0x2000036a = 0; |
| *(uint8_t*)0x2000036b = 0; |
| *(uint8_t*)0x2000036c = 0; |
| *(uint8_t*)0x2000036d = 0; |
| *(uint8_t*)0x2000036e = 0; |
| *(uint8_t*)0x2000036f = 1; |
| *(uint32_t*)0x20000370 = 6; |
| *(uint16_t*)0x20000374 = 2; |
| *(uint16_t*)0x20000376 = htobe16(0x4e22); |
| *(uint32_t*)0x20000378 = htobe32(-1); |
| *(uint16_t*)0x20000384 = 2; |
| *(uint16_t*)0x20000386 = htobe16(0x4e22); |
| *(uint32_t*)0x20000388 = htobe32(-1); |
| *(uint16_t*)0x20000394 = 2; |
| *(uint16_t*)0x20000396 = htobe16(0x4e23); |
| *(uint32_t*)0x20000398 = htobe32(0); |
| *(uint16_t*)0x200003a4 = 2; |
| *(uint16_t*)0x200003a6 = htobe16(0x4e23); |
| *(uint32_t*)0x200003a8 = htobe32(0xe0000002); |
| *(uint16_t*)0x200003b4 = 0xa; |
| *(uint16_t*)0x200003b6 = htobe16(0x4e24); |
| *(uint32_t*)0x200003b8 = htobe32(3); |
| *(uint8_t*)0x200003bc = -1; |
| *(uint8_t*)0x200003bd = 1; |
| *(uint8_t*)0x200003be = 0; |
| *(uint8_t*)0x200003bf = 0; |
| *(uint8_t*)0x200003c0 = 0; |
| *(uint8_t*)0x200003c1 = 0; |
| *(uint8_t*)0x200003c2 = 0; |
| *(uint8_t*)0x200003c3 = 0; |
| *(uint8_t*)0x200003c4 = 0; |
| *(uint8_t*)0x200003c5 = 0; |
| *(uint8_t*)0x200003c6 = 0; |
| *(uint8_t*)0x200003c7 = 0; |
| *(uint8_t*)0x200003c8 = 0; |
| *(uint8_t*)0x200003c9 = 0; |
| *(uint8_t*)0x200003ca = 0; |
| *(uint8_t*)0x200003cb = 1; |
| *(uint32_t*)0x200003cc = 0; |
| syscall(__NR_setsockopt, r[1], 0x84ul, 0x64ul, 0x20000300ul, 0xd0ul); |
| break; |
| case 5: |
| *(uint32_t*)0x20000080 = 0; |
| *(uint16_t*)0x20000084 = 0x18; |
| *(uint16_t*)0x20000086 = 0xfa00; |
| *(uint64_t*)0x20000088 = 0; |
| *(uint64_t*)0x20000090 = 0x20000000; |
| *(uint16_t*)0x20000098 = 0x111; |
| *(uint8_t*)0x2000009a = 0; |
| *(uint8_t*)0x2000009b = 0; |
| *(uint8_t*)0x2000009c = 0; |
| *(uint8_t*)0x2000009d = 0; |
| *(uint8_t*)0x2000009e = 0; |
| *(uint8_t*)0x2000009f = 0; |
| res = syscall(__NR_write, r[0], 0x20000080ul, 0x20ul); |
| if (res != -1) |
| r[2] = *(uint32_t*)0x20000000; |
| break; |
| case 6: |
| *(uint32_t*)0x200001c0 = 2; |
| *(uint16_t*)0x200001c4 = 0x28; |
| *(uint16_t*)0x200001c6 = 0xfa00; |
| *(uint64_t*)0x200001c8 = 0; |
| *(uint16_t*)0x200001d0 = 0xa; |
| *(uint16_t*)0x200001d2 = htobe16(0); |
| *(uint32_t*)0x200001d4 = htobe32(-1); |
| *(uint8_t*)0x200001d8 = -1; |
| *(uint8_t*)0x200001d9 = 1; |
| *(uint8_t*)0x200001da = 0; |
| *(uint8_t*)0x200001db = 0; |
| *(uint8_t*)0x200001dc = 0; |
| *(uint8_t*)0x200001dd = 0; |
| *(uint8_t*)0x200001de = 0; |
| *(uint8_t*)0x200001df = 0; |
| *(uint8_t*)0x200001e0 = 0; |
| *(uint8_t*)0x200001e1 = 0; |
| *(uint8_t*)0x200001e2 = 0; |
| *(uint8_t*)0x200001e3 = 0; |
| *(uint8_t*)0x200001e4 = 0; |
| *(uint8_t*)0x200001e5 = 0; |
| *(uint8_t*)0x200001e6 = 0; |
| *(uint8_t*)0x200001e7 = 1; |
| *(uint32_t*)0x200001e8 = 0xfffffffe; |
| *(uint32_t*)0x200001ec = r[2]; |
| syscall(__NR_write, r[0], 0x200001c0ul, 0x30ul); |
| break; |
| case 7: |
| *(uint32_t*)0x20000140 = 7; |
| *(uint16_t*)0x20000144 = 8; |
| *(uint16_t*)0x20000146 = 0xfa00; |
| *(uint32_t*)0x20000148 = r[2]; |
| *(uint32_t*)0x2000014c = 0; |
| syscall(__NR_write, r[0], 0x20000140ul, 0x10ul); |
| break; |
| } |
| } |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0); |
| loop(); |
| return 0; |
| } |
