// https://syzkaller.appspot.com/bug?id=909e5fffddb5321fd022fa2d8a620638193e3455 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include uint64_t r[1] = {0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0ul); intptr_t res = 0; memcpy((void*)0x20000240, "./file1\000", 8); syscall(__NR_mkdir, 0x20000240ul, 0ul); memcpy((void*)0x20000180, "./bus\000", 6); syscall(__NR_mkdir, 0x20000180ul, 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*)0x20000040, "./file0\000", 8); syscall(__NR_open, 0x20000040ul, 0x141042ul, 0ul); memcpy((void*)0x20000040, "./file0\000", 8); res = syscall(__NR_open, 0x20000040ul, 0ul, 0ul); if (res != -1) r[0] = res; *(uint64_t*)0x200003c0 = 0; *(uint64_t*)0x200003c8 = 0xff00000000000000; *(uint16_t*)0x200003d0 = 0; *(uint16_t*)0x200003d2 = 0; *(uint32_t*)0x200003d4 = 0; syscall(__NR_ioctl, r[0], 0xc020660b, 0x200003c0ul); return 0; }