Re: [4.9.y v3] ext4: avoid running out of journal credits when appending to an inline file

On Tue, Oct 16, 2018 at 02:05:21PM -0700, Chenbo Feng wrote:

From: Theodore Ts'o tytso@mit.edu

commit 8bc1379b82b8e809eef77a9fedbb75c6c297be19 upstream.

Use a separate journal transaction if it turns out that we need to convert an inline file to use an data block. Otherwise we could end up failing due to not having journal credits.

This addresses CVE-2018-10883.

https://bugzilla.kernel.org/show_bug.cgi?id=200071

Change-Id: Ifbe92e379f7a25fb252a2584356ccb91f902ea8f Signed-off-by: Theodore Ts'o tytso@mit.edu Cc: stable@kernel.org [fengc@google.com: 4.4 and 4.9 backport: adjust context] Signed-off-by: Chenbo Feng fengc@google.com

Applied, thanks.

greg k-h