Sent: Thursday, July 24, 2014 6:15 PM
>>> To: Gu Zheng; Chao Yu
>>> Cc: 'Jaegeuk Kim'; 'linux-kernel'; 'Alexey Khoroshilov';
>>> linux-f2fs-de...@lists.sourceforge.net
>>> Subject: Re: [f2fs-dev] f2fs: Possible use-after-free whe
39, Gu Zheng пишет:
>>> Hi,
>>> On 07/23/2014 10:12 AM, Chao Yu wrote:
>>>
>>>> Hi Andrey Gu,
>>>>
>>>>> -Original Message-
>>>>> From: Andrey Tsyvarev [mailto:tsyva...@ispras.ru]
>>>>> Se
4 6:15 PM
> To: Gu Zheng; Chao Yu
> Cc: 'Jaegeuk Kim'; 'linux-kernel'; 'Alexey Khoroshilov';
> linux-f2fs-de...@lists.sourceforge.net
> Subject: Re: [f2fs-dev] f2fs: Possible use-after-free when umount filesystem
>
> Hi,
>
> With patch skipping in
: Tuesday, July 22, 2014 6:04 PM
To: Gu Zheng
Cc: Jaegeuk Kim; linux-kernel; Alexey Khoroshilov;
linux-f2fs-de...@lists.sourceforge.net
Subject: Re: [f2fs-dev] f2fs: Possible use-after-free when umount filesystem
Hi Gu,
Investigation shows, that f2fs_evict_inode, when called for 'meta_inode
gt; linux-f2fs-de...@lists.sourceforge.net
>> Subject: Re: [f2fs-dev] f2fs: Possible use-after-free when umount filesystem
>>
>> Hi Gu,
>>
>>>> Investigation shows, that f2fs_evict_inode, when called for 'meta_inode',
>>>> uses
>
Hi Andrey Gu,
> -Original Message-
> From: Andrey Tsyvarev [mailto:tsyva...@ispras.ru]
> Sent: Tuesday, July 22, 2014 6:04 PM
> To: Gu Zheng
> Cc: Jaegeuk Kim; linux-kernel; Alexey Khoroshilov;
> linux-f2fs-de...@lists.sourceforge.net
> Subject: Re: [f2fs-dev] f2f
Hi Gu,
Investigation shows, that f2fs_evict_inode, when called for 'meta_inode', uses
invalidate_mapping_pages() for 'node_inode'.
But 'node_inode' is deleted before 'meta_inode' in f2fs_put_super via iput().
It seems that in common usage scenario this use-after-free is benign, because
'node_
Hi Andrey,
On 07/21/2014 06:56 PM, Andrey Tsyvarev wrote:
> Hello,
>
> Using memory error detector reveals the following use-after-free error in
> 3.15.0:
>
> AddressSanitizer: heap-use-after-free in f2fs_evict_inode
> Read of size 8 by thread T22279:
> [] f2fs_evict_inode+0x102/0x2e0 [f2fs]
Hello,
Using memory error detector reveals the following use-after-free error
in 3.15.0:
AddressSanitizer: heap-use-after-free in f2fs_evict_inode
Read of size 8 by thread T22279:
[] f2fs_evict_inode+0x102/0x2e0 [f2fs]
/home/tester/linux-sources/linux-kasan/fs/f2fs/f2fs.h:584
[] evict+0x15f
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