// https://syzkaller.appspot.com/bug?id=d369eafab7836fe0dd2e027d2689da06cad8e1a3 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include const int kFailStatus = 67; const int kRetryStatus = 69; __attribute__((noreturn)) static void doexit(int status) { volatile unsigned i; syscall(__NR_exit_group, status); for (i = 0;; i++) { } } __attribute__((noreturn)) static void fail(const char* msg, ...) { int e = errno; fflush(stdout); va_list args; va_start(args, msg); vfprintf(stderr, msg, args); va_end(args); fprintf(stderr, " (errno %d)\n", e); doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus); } __attribute__((noreturn)) static void exitf(const char* msg, ...) { int e = errno; fflush(stdout); va_list args; va_start(args, msg); vfprintf(stderr, msg, args); va_end(args); fprintf(stderr, " (errno %d)\n", e); doexit(kRetryStatus); } static uint64_t current_time_ms() { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) fail("clock_gettime failed"); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void test(); void loop() { int iter; for (iter = 0;; iter++) { int pid = fork(); if (pid < 0) fail("clone failed"); if (pid == 0) { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); test(); doexit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { int res = waitpid(-1, &status, __WALL | WNOHANG); if (res == pid) break; usleep(1000); if (current_time_ms() - start > 5 * 1000) { kill(-pid, SIGKILL); kill(pid, SIGKILL); while (waitpid(-1, &status, __WALL) != pid) { } break; } } } } long r[94]; void* thr(void* arg) { switch ((long)arg) { case 0: r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); break; case 1: *(uint32_t*)0x2001d000 = (uint32_t)0x2; *(uint32_t*)0x2001d004 = (uint32_t)0x78; *(uint8_t*)0x2001d008 = (uint8_t)0xdf; *(uint8_t*)0x2001d009 = (uint8_t)0x0; *(uint8_t*)0x2001d00a = (uint8_t)0x0; *(uint8_t*)0x2001d00b = (uint8_t)0x0; *(uint32_t*)0x2001d00c = (uint32_t)0x0; *(uint64_t*)0x2001d010 = (uint64_t)0x0; *(uint64_t*)0x2001d018 = (uint64_t)0x0; *(uint64_t*)0x2001d020 = (uint64_t)0x0; *(uint8_t*)0x2001d028 = (uint8_t)0xfe; *(uint8_t*)0x2001d029 = (uint8_t)0x0; *(uint8_t*)0x2001d02a = (uint8_t)0x0; *(uint8_t*)0x2001d02b = (uint8_t)0x0; *(uint32_t*)0x2001d02c = (uint32_t)0x0; *(uint32_t*)0x2001d030 = (uint32_t)0x0; *(uint32_t*)0x2001d034 = (uint32_t)0x0; *(uint64_t*)0x2001d038 = (uint64_t)0x0; *(uint64_t*)0x2001d040 = (uint64_t)0x0; *(uint64_t*)0x2001d048 = (uint64_t)0x0; *(uint64_t*)0x2001d050 = (uint64_t)0x0; *(uint64_t*)0x2001d058 = (uint64_t)0x0; *(uint32_t*)0x2001d060 = (uint32_t)0x0; *(uint64_t*)0x2001d068 = (uint64_t)0x0; *(uint32_t*)0x2001d070 = (uint32_t)0x0; *(uint16_t*)0x2001d074 = (uint16_t)0x0; *(uint16_t*)0x2001d076 = (uint16_t)0x0; r[28] = syscall(__NR_perf_event_open, 0x2001d000ul, 0x0ul, 0xfffffffffffffffful, 0xfffffffffffffffful, 0x0ul); break; case 2: memcpy((void*)0x20031000, "\x2f\x64\x65\x76\x2f\x6b\x76\x6d\x00", 9); r[30] = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20031000ul, 0x0ul, 0x0ul); break; case 3: r[31] = syscall(__NR_ioctl, r[30], 0xae01ul, 0x0ul); break; case 4: r[32] = syscall(__NR_eventfd2, 0x2ul, 0x80000ul); break; case 5: *(uint64_t*)0x20020000 = (uint64_t)0x0; *(uint64_t*)0x20020008 = (uint64_t)0x2002d000; *(uint32_t*)0x20020010 = (uint32_t)0x2; *(uint32_t*)0x20020014 = r[32]; *(uint32_t*)0x20020018 = (uint32_t)0x3; r[38] = syscall(__NR_ioctl, r[31], 0x4040ae79ul, 0x20020000ul); break; case 6: *(uint32_t*)0x20387ff0 = (uint32_t)0x0; *(uint32_t*)0x20387ff4 = (uint32_t)0x0; *(uint64_t*)0x20387ff8 = (uint64_t)0x20d99000; r[42] = syscall(__NR_ioctl, 0xfffffffffffffffful, 0x40104593ul, 0x20387ff0ul); break; case 7: r[43] = syscall(__NR_fsync, 0xfffffffffffffffful); break; case 8: *(uint32_t*)0x20151ef8 = (uint32_t)0x0; *(uint16_t*)0x20151f00 = (uint16_t)0xa; *(uint16_t*)0x20151f02 = (uint16_t)0x214e; *(uint32_t*)0x20151f04 = (uint32_t)0xffffffffffff8001; *(uint8_t*)0x20151f08 = (uint8_t)0x0; *(uint8_t*)0x20151f09 = (uint8_t)0x0; *(uint8_t*)0x20151f0a = (uint8_t)0x0; *(uint8_t*)0x20151f0b = (uint8_t)0x0; *(uint8_t*)0x20151f0c = (uint8_t)0x0; *(uint8_t*)0x20151f0d = (uint8_t)0x0; *(uint8_t*)0x20151f0e = (uint8_t)0x0; *(uint8_t*)0x20151f0f = (uint8_t)0x0; *(uint8_t*)0x20151f10 = (uint8_t)0x0; *(uint8_t*)0x20151f11 = (uint8_t)0x0; *(uint8_t*)0x20151f12 = (uint8_t)0x0; *(uint8_t*)0x20151f13 = (uint8_t)0x0; *(uint8_t*)0x20151f14 = (uint8_t)0x0; *(uint8_t*)0x20151f15 = (uint8_t)0x0; *(uint8_t*)0x20151f16 = (uint8_t)0x0; *(uint8_t*)0x20151f17 = (uint8_t)0x0; *(uint32_t*)0x20151f18 = (uint32_t)0x6; *(uint64_t*)0x20151f20 = (uint64_t)0x0; *(uint64_t*)0x20151f28 = (uint64_t)0x0; *(uint64_t*)0x20151f30 = (uint64_t)0x0; *(uint64_t*)0x20151f38 = (uint64_t)0x0; *(uint64_t*)0x20151f40 = (uint64_t)0x0; *(uint64_t*)0x20151f48 = (uint64_t)0x0; *(uint64_t*)0x20151f50 = (uint64_t)0x0; *(uint64_t*)0x20151f58 = (uint64_t)0x0; *(uint64_t*)0x20151f60 = (uint64_t)0x0; *(uint64_t*)0x20151f68 = (uint64_t)0x0; *(uint64_t*)0x20151f70 = (uint64_t)0x0; *(uint64_t*)0x20151f78 = (uint64_t)0x0; *(uint64_t*)0x20151f88 = (uint64_t)0xff; *(uint64_t*)0x20151f90 = (uint64_t)0x4; *(uint64_t*)0x20151f98 = (uint64_t)0x6; *(uint64_t*)0x20151fa0 = (uint64_t)0x3; *(uint64_t*)0x20151fa8 = (uint64_t)0xfffffffffffffffe; *(uint64_t*)0x20151fb0 = (uint64_t)0xfffffffffffff800; *(uint64_t*)0x20151fb8 = (uint64_t)0x1; *(uint64_t*)0x20151fc0 = (uint64_t)0x8000; *(uint64_t*)0x20151fc8 = (uint64_t)0x8000; *(uint64_t*)0x20151fd0 = (uint64_t)0x0; *(uint64_t*)0x20151fd8 = (uint64_t)0x3; *(uint64_t*)0x20151fe0 = (uint64_t)0x51bf; *(uint64_t*)0x20151fe8 = (uint64_t)0x2000002; *(uint64_t*)0x20151ff0 = (uint64_t)0x9; *(uint64_t*)0x20151ff8 = (uint64_t)0xffffffff; *(uint32_t*)0x205f6ffc = (uint32_t)0x108; r[93] = syscall(__NR_getsockopt, 0xffffffffffffff9cul, 0x84ul, 0x70ul, 0x20151ef8ul, 0x205f6ffcul); break; } return 0; } void test() { long i; pthread_t th[18]; memset(r, -1, sizeof(r)); srand(getpid()); for (i = 0; i < 9; i++) { pthread_create(&th[i], 0, thr, (void*)i); usleep(rand() % 10000); } for (i = 0; i < 9; i++) { pthread_create(&th[9 + i], 0, thr, (void*)i); if (rand() % 2) usleep(rand() % 10000); } usleep(rand() % 100000); } int main() { int i; for (i = 0; i < 8; i++) { if (fork() == 0) { loop(); return 0; } } sleep(1000000); return 0; }