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Date: Sat, 28 Apr 2018 19:45:11 +0200
From: David Sterba <dsterba@suse.cz>
To: dsterba@suse.cz, Qu Wenruo <wqu@suse.com>, linux-btrfs@vger.kernel.org
Subject: Re: [PATCH] btrfs: trace: Remove unnecessary fs_info parameter for
 btrfs__reserve_extent event class
Message-ID: <20180428174511.GL21272@twin.jikos.cz>
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References: <20180426062425.8574-1-wqu@suse.com>
 <20180428164206.GI21272@twin.jikos.cz>
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On Sat, Apr 28, 2018 at 06:42:06PM +0200, David Sterba wrote:
> On Thu, Apr 26, 2018 at 02:24:25PM +0800, Qu Wenruo wrote:
> > fs_info can be extracted from btrfs_block_group_cache, and all
> > btrfs_block_group_cache is created by btrfs_create_block_group_cache()
> > with fs_info initialized, no need to worry about NULL pointer
> > dereference.
> 
> Famous last words.

And it's a false alert, it's caused by another patch yet to be
identified.