linux-kernel - Re: [PATCH] block: Fix iterating over an empty bio with bio_for_each_folio

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Message-Id: <170544262659.494117.14502342650352587808.b4-ty@kernel.dk>
Date: Tue, 16 Jan 2024 15:03:46 -0700
From: Jens Axboe <axboe@...nel.dk>
To: "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, 
 syzbot+8b23309d5788a79d3eea@...kaller.appspotmail.com, 
 syzbot+004c1e0fced2b4bc3dcc@...kaller.appspotmail.com, 
 stable@...r.kernel.org
Subject: Re: [PATCH] block: Fix iterating over an empty bio with
 bio_for_each_folio_all


On Tue, 16 Jan 2024 21:29:59 +0000, Matthew Wilcox (Oracle) wrote:
> If the bio contains no data, bio_first_folio() calls page_folio() on a
> NULL pointer and oopses.  Move the test that we've reached the end of
> the bio from bio_next_folio() to bio_first_folio().
> 
> 

Applied, thanks!

[1/1] block: Fix iterating over an empty bio with bio_for_each_folio_all
      commit: 7bed6f3d08b7af27b7015da8dc3acf2b9c1f21d7

Best regards,
-- 
Jens Axboe