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From: David Sterba <dsterba@suse.cz>
To: Qu Wenruo <wqu@suse.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 0/3] btrfs-progs: Detect compressed extent without csum
Date: Tue, 11 Sep 2018 17:58:03 +0200	[thread overview]
Message-ID: <20180911155803.GF2154@twin.jikos.cz> (raw)
In-Reply-To: <20180514065444.26313-1-wqu@suse.com>

On Mon, May 14, 2018 at 02:54:41PM +0800, Qu Wenruo wrote:
> Patches can be fetch from github:
> https://github.com/adam900710/btrfs-progs/tree/compress_nodatasum
> 
> It's based on v4.16 stable branch.
> 
> James Harvey from mail list reports a strange kernel panic, whichs show
> obviously kernel memory corruption, while after btrfs decompression
> failure.
> 
> It turns out that, some compressed extent get corrupted on-disk, while
> the inode has NODATASUM set, there is no csum to prevent corrupted
> mirror being used.
> 
> Although the root cause should be buggy lzo implementation, it still
> shows that btrfs is not following the behavior defined in btrfs(5):
> 
>      Note
>      If nodatacow or nodatasum are enabled, compression is disabled.
> 
> So at least make btrfs check to detect such problem.
> 
> Qu Wenruo (3):
>   btrfs-progs: check/lowmem: Add checks for compressed extent without
>     csum
>   btrfs-progs: check/original: Add checks for compressed extent without
>     csum
>   btrfs-progs: fsck-tests: Add test case for detecting compressed extent
>     without csum

Sorry for late reply, can you please refresh the patches on top of a
more recent progs? Thanks.

  parent reply	other threads:[~2018-09-11 20:58 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-14  6:54 [PATCH 0/3] btrfs-progs: Detect compressed extent without csum Qu Wenruo
2018-05-14  6:54 ` [PATCH 1/3] btrfs-progs: check/lowmem: Add checks for " Qu Wenruo
2018-05-14  6:54 ` [PATCH 2/3] btrfs-progs: check/original: " Qu Wenruo
2018-05-14  6:54 ` [PATCH 3/3] btrfs-progs: fsck-tests: Add test case for detecting " Qu Wenruo
2018-09-11 15:58 ` David Sterba [this message]
2018-09-12  0:08   ` [PATCH 0/3] btrfs-progs: Detect " Qu Wenruo
2018-05-14  7:03 Qu Wenruo

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