// https://syzkaller.appspot.com/bug?id=e6d1ed219bd92dd9b3e653eda032852996a9b457 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include static uintptr_t syz_open_procfs(uintptr_t a0, uintptr_t a1) { char buf[128]; memset(buf, 0, sizeof(buf)); if (a0 == 0) { snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1); } else if (a0 == (uintptr_t)-1) { snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1); } else { snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1); } int fd = open(buf, O_RDWR); if (fd == -1) fd = open(buf, O_RDONLY); return fd; } uint64_t r[1] = {0xffffffffffffffff}; void loop() { long res = 0; memcpy((void*)0x20000080, "\x2f\x65\x78\x65\x00\x00\x00\x00\x00\x04\x09\x00" "\x4b\xdd\xd9\xde\x91\xbe\x10\xee\xbf\x00\x0e\xe9" "\xa9\x0f\x79\x80\x58\x43\x9e\xd5\x54\xfa\x07\x42" "\x4a\xde\xe9\x01\xd2\xda\x75\xaf\x1f\x02\xac\xc7" "\xed\xbc\xd7\xa0\x71\xfb\x35\x33\x1c\xe3\x9c\x5a", 60); res = syz_open_procfs(0, 0x20000080); if (res != -1) r[0] = res; syscall(__NR_ftruncate, r[0], 6); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); loop(); return 0; }