From: David Sterba <dsterba@suse.cz>
To: Christophe de Dinechin <dinechin@redhat.com>
Cc: Btrfs BTRFS <linux-btrfs@vger.kernel.org>,
Roman Mamedov <rm@romanrm.net>
Subject: Re: [PATCH 2/3 v2] Prevent attempt to insert extent record with max_size==0
Date: Tue, 2 May 2017 18:46:44 +0200 [thread overview]
Message-ID: <20170502164644.GS23260@twin.jikos.cz> (raw)
In-Reply-To: <74CAC383-4C3A-4C68-9B56-2AB28947E3E3@redhat.com>
On Fri, Apr 28, 2017 at 11:50:23AM +0200, Christophe de Dinechin wrote:
> When this happens, we will trip a BUG_ON(end < start) in insert_state
> because in check_extent_refs, we use this max_size expecting it's not zero:
>
> set_extent_dirty(root->fs_info->excluded_extents,
> rec->start,
> rec->start + rec->max_size - 1);
>
> See https://bugzilla.redhat.com/show_bug.cgi?id=1435567
> for an example where this scenario occurs.
>
> Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
Applied, thanks.
next prev parent reply other threads:[~2017-05-02 16:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-28 9:13 [PATCH 3/3] Make max_size consistent with nr Christophe de Dinechin
2017-04-28 9:16 ` Roman Mamedov
2017-04-28 9:50 ` [PATCH 2/3 v2] Prevent attempt to insert extent record with max_size==0 Christophe de Dinechin
2017-05-02 16:46 ` David Sterba [this message]
2017-04-28 9:51 ` [PATCH 3/3 v2] Make max_size consistent with nr Christophe de Dinechin
2017-05-02 16:53 ` David Sterba
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