* WARNING: fs/btrfs/extent-tree.c:6974 __btrfs_free_extent.isra.0.cold
@ 2019-08-12 5:00 Chris Murphy
2019-08-12 5:20 ` Qu Wenruo
0 siblings, 1 reply; 2+ messages in thread
From: Chris Murphy @ 2019-08-12 5:00 UTC (permalink / raw)
To: Btrfs BTRFS
Filed bug here
https://bugzilla.kernel.org/show_bug.cgi?id=204557
kernel 5.2.8
progs 5.2.1
I'm getting a kernel warning, and tainted kernel following 'btrfs
scrub start' on a file system that was previously corrupted during
failure to clear v1 cache.
It's valid to complain about a problem with the file system that can't
be fixed. But for the scrub to abort and also taint the kernel sounds
like a bug?
--
Chris Murphy
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: WARNING: fs/btrfs/extent-tree.c:6974 __btrfs_free_extent.isra.0.cold
2019-08-12 5:00 WARNING: fs/btrfs/extent-tree.c:6974 __btrfs_free_extent.isra.0.cold Chris Murphy
@ 2019-08-12 5:20 ` Qu Wenruo
0 siblings, 0 replies; 2+ messages in thread
From: Qu Wenruo @ 2019-08-12 5:20 UTC (permalink / raw)
To: Chris Murphy, Btrfs BTRFS
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On 2019/8/12 下午1:00, Chris Murphy wrote:
> Filed bug here
> https://bugzilla.kernel.org/show_bug.cgi?id=204557
Exactly the WARN_ON()/BUG_ON()s I'm going to kill in this patch:
https://patchwork.kernel.org/patch/11038303/
So hopefully in 5.3/5.4 release, it will be a more developer-friendly
output.
(But still not user-friendly)
>
> kernel 5.2.8
> progs 5.2.1
>
> I'm getting a kernel warning, and tainted kernel following 'btrfs
> scrub start' on a file system that was previously corrupted during
> failure to clear v1 cache.
>
> It's valid to complain about a problem with the file system that can't
> be fixed. But for the scrub to abort and also taint the kernel sounds
> like a bug?
>
Corruption in extent tree is a serious problem, it could easily screw
btrfs CoW, so we *must* abort transaction when we find anything wrong on
extent tree.
(Ironically, most corruption happens in extent tree).
For the warning part, it is going to be fixed.
Thanks,
Qu
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