Re: Bug report: some new bugs found by fuzzing

["Xu, Wen" <wen.xu@gatech.edu>]

It is already fixed by the latest commit in your git tree?

Thanks,
Wen

> On Jul 7, 2018, at 12:32 PM, Chao Yu <chao@kernel.org> wrote:
> 
> On 2018/7/7 23:48, Xu, Wen wrote:
>> Sure I will do it. So you are still willing to fix the issues even it may be affected by CHECK_FS config?
> 
> Yes, let me figure out the problem.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?h=f2fs-dev&id=ccf5e1525e92010dd2cb8ff5a820283f9bff5c78
> 
> Above commit seems breaking normal case, let me update it.
> 
> Thanks,
> 
>> 
>> Thanks
>> -Wen
>> 
>>> On Jul 6, 2018, at 12:22 PM, Chao Yu <chao@kernel.org> wrote:
>>> 
>>> Hi Wen,
>>> 
>>> I've update two patches today for these issues, could you please test them?
>>> 
>>> On 2018/7/6 9:30, Xu, Wen wrote:
>>>> Thanks very much! I would like to provide any further help or testing.
>>>> 
>>>> -Wen
>>>> 
>>>>> On Jul 5, 2018, at 9:13 PM, Chao Yu <yuchao0@huawei.com> wrote:
>>>>> 
>>>>> Hi Wen,
>>>>> 
>>>>> On 2018/7/6 3:19, Xu, Wen wrote:
>>>>>> Dear F2FS developers,
>>>>>> 
>>>>>> By fuzzing, I find some new issues in Linux f2fs kernel module. Here are the links on Bugzilla,
>>>>>> 
>>>>>> 200419	NULL pointer dereference in __remove_dirty_segment() when mounting an f2fs image
>>>>>> https://bugzilla.kernel.org/show_bug.cgi?id=200419
>>> 
>>> https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?h=f2fs-dev&id=ccf5e1525e92010dd2cb8ff5a820283f9bff5c78
>>> 
>>>>>> 
>>>>>> 200421	Buffer overrun in f2fs_truncate_inline_inode() when umounting an f2fs image
>>>>>> https://bugzilla.kernel.org/show_bug.cgi?id=200421
>>> 
>>> https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?h=f2fs-dev&id=ea08202ee4ca67b31b3510591f2a8032ec3ac4cb
>>> 
>>>>>> 
>>>>>> 200423	Out-of-bound access in f2fs_get_dnode_of_data() when operating file on an f2fs image
>>>>>> https://bugzilla.kernel.org/show_bug.cgi?id=200423
>>>>>> 
>>>>>> 200425	Invalid memory access in f2fs_find_target_dentry() when operating files on an f2fs image
>>>>>> https://bugzilla.kernel.org/show_bug.cgi?id=200425
>>> 
>>> Fixes this issue with above commit.
>>> 
>>> Thanks,
>>> 
>>>>>> 
>>>>>> Regarding my testing, they can all be reproduced w/ Chao’s f2fs-dev branch. Thanks!
>>>>> 
>>>>> Alright, I will dig into these issues in these days, once I have solution, will
>>>>> let you know.
>>>>> 
>>>>> Thanks,
>>>>> 
>>>>>> 
>>>>>> -Wen
>>>> 
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