From: David Sterba <dsterba@suse.cz>
To: madhuparnabhowmik10@gmail.com
Cc: clm@fb.com, josef@toxicpanda.com, dsterba@suse.com,
linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org,
joel@joelfernandes.org,
linux-kernel-mentees@lists.linuxfoundation.org,
paulmck@kernel.org, frextrite@gmail.com, linux@roeck-us.net
Subject: Re: [PATCH] fs: btrfs: block-group.c: Fix suspicious RCU usage warning
Date: Fri, 6 Mar 2020 20:37:13 +0100 [thread overview]
Message-ID: <20200306193713.GI2902@twin.jikos.cz> (raw)
In-Reply-To: <20200306065243.11699-1-madhuparnabhowmik10@gmail.com>
On Fri, Mar 06, 2020 at 12:22:43PM +0530, madhuparnabhowmik10@gmail.com wrote:
> From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
>
> The space_info list is rcu protected.
> Hence, it should be traversed with rcu_read_lock held.
>
> Warning:
> [ 29.104591] =============================
> [ 29.104756] WARNING: suspicious RCU usage
> [ 29.105046] 5.6.0-rc4-next-20200305 #1 Not tainted
> [ 29.105231] -----------------------------
> [ 29.105401] fs/btrfs/block-group.c:2011 RCU-list traversed in non-reader section!!
>
> Reported-by: Guenter Roeck <linux@roeck-us.net>
> Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
I've updated the changelog based on comments from the mail thread and
applied the patch. Thanks.
prev parent reply other threads:[~2020-03-06 19:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-06 6:52 madhuparnabhowmik10
2020-03-06 7:16 ` Qu Wenruo
2020-03-06 14:00 ` Madhuparna Bhowmik
2020-03-06 15:25 ` David Sterba
2020-03-06 19:53 ` Joel Fernandes
2020-03-06 19:37 ` David Sterba [this message]
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