linux-kernel - Re: [PATCH] btrfs: avoid use-after-free when return the error code

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Message-ID: <20221123154031.GL5824@twin.jikos.cz>
Date:   Wed, 23 Nov 2022 16:40:31 +0100
From:   David Sterba <dsterba@...e.cz>
To:     void0red <void0red@...il.com>
Cc:     dsterba@...e.com, linux-btrfs@...r.kernel.org,
        linux-kernel@...r.kernel.org, eriri <1527030098@...com>
Subject: Re: [PATCH] btrfs: avoid use-after-free when return the error code

On Wed, Nov 23, 2022 at 10:39:45PM +0800, void0red wrote:
> free_extent_map(em) will free em->map_lookup, so it is
> wrong to use it when return.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216721
> Signed-off-by: void0red <void0red@...il.com>
> Reported-by: eriri <1527030098@...com>

Added to misc-next with updated changelog, thanks.