linux-kernel - Re: [block:for-3.14/core]: bio_endio: Warn and free bio if bi_end

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Message-ID: <52CD7E0B.6020606@kernel.dk>
Date:	Wed, 08 Jan 2014 09:34:19 -0700
From:	Jens Axboe <axboe@...nel.dk>
To:	Muthu Kumar <muthu.lkml@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [block:for-3.14/core]: bio_endio: Warn and free bio if bi_end_io
 is not set.

On 01/07/2014 06:57 PM, Muthu Kumar wrote:
> Jens,
> In bio_endio if bio doesn't have bi_end_io (should be an error case),
> we set bio to NULL and continue silently without freeing the bio. It
> would be good to have a WARN and free the bio to avoid memory leak.
> 
> If you agree, here is the patch.

I don't remember off the top of my head if there are valid uses cases of
it. But leaking it would definitely be problematic. So I think it's a
good idea to queue it up, then we'll see if it triggers anything.

-- 
Jens Axboe

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