// https://syzkaller.appspot.com/bug?id=afa0831064d95bc35630942e0ffa3604db3ec357 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); intptr_t res = 0; memcpy((void*)0x20000240, "./file1\000", 8); syscall(__NR_mkdir, 0x20000240ul, 0ul); memcpy((void*)0x200000c0, "./bus\000", 6); syscall(__NR_mkdir, 0x200000c0ul, 0ul); memcpy((void*)0x20000280, "./file0\000", 8); syscall(__NR_mkdir, 0x20000280ul, 0ul); memcpy((void*)0x20000000, "./bus\000", 6); memcpy((void*)0x20000080, "overlay\000", 8); memcpy((void*)0x20000100, "lowerdir=./bus,workdir=./file1,upperdir=./file0", 47); syscall(__NR_mount, 0x400000ul, 0x20000000ul, 0x20000080ul, 0ul, 0x20000100ul); memcpy((void*)0x200002c0, "./bus\000", 6); syscall(__NR_chdir, 0x200002c0ul); memcpy((void*)0x20000200, "./bus\000", 6); res = syscall(__NR_creat, 0x20000200ul, 0ul); if (res != -1) r[0] = res; memcpy((void*)0x20000200, "./file0\000", 8); res = syscall(__NR_open, 0x20000200ul, 0x4008040ul, 0ul); if (res != -1) r[1] = res; syscall(__NR_fcntl, r[1], 0x400ul, 0ul); syscall(__NR_sendfile, r[0], r[1], 0ul, 0xbd96ul); return 0; }