// https://syzkaller.appspot.com/bug?id=9853146f1bf4c6496218371ab4847d895cfa444f // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include static long syz_open_procfs(volatile long a0, volatile long a1) { char buf[128]; memset(buf, 0, sizeof(buf)); if (a0 == 0) { snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1); } else if (a0 == -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; } int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); memcpy((void*)0x20000080, "mountinfo\000", 10); syz_open_procfs(0, 0x20000080); memcpy((void*)0x200001c0, "./file0\000", 8); syscall(__NR_mkdir, 0x200001c0, 0); memcpy((void*)0x200000c0, "./file0\000", 8); memcpy((void*)0x20000080, "fuse.", 5); memcpy((void*)0x200002c0, "\x66\x64\x2c\xe4\x3a\xe7\xe3\xdd\xfa\x46\xe4\x87" "\x75\x91\x1d\xfb\xa0\x19\x2f\xf1\xba\x2f\x48\xda", 24); sprintf((char*)0x200002d8, "0x%016llx", (long long)-1); sprintf((char*)0x200002ea, "%020llu", (long long)0); sprintf((char*)0x200002fe, "%020llu", (long long)0); syscall(__NR_mount, 0, 0x200000c0, 0x20000080, 0, 0x200002c0); return 0; }