Re: [PATCH] Btrfs: fix crash/invalid memory access on fsync when using overlayfs

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On Mon, Mar 21, 2016 at 5:51 PM, Chris Mason <clm@xxxxxx> wrote:
> On Mon, Mar 21, 2016 at 05:38:44PM +0000, fdmanana@xxxxxxxxxx wrote:
>> From: Filipe Manana <fdmanana@xxxxxxxx>
>>
>> If the lower or upper directory of an overlayfs mount belong to a btrfs
>> file system and we fsync the file through the overlayfs' merged directory
>> we ended up accessing an inode that didn't belong to btrfs as if it were
>> a btrfs inode at btrfs_sync_file() resulting in a crash like the following:
>
> Thanks Filipe, I'll put this in a second pull this week, even if its the
> only patch in it ;)

Well we need to wait for Miklos patch to be merged first.

>
> -chris
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