linux-ext4 - [patch 088/148] jbd: abort when failed to log metadata buffers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [day] [month] [year] [list]

Date:	Sat, 18 Oct 2008 20:27:53 -0700
From:	akpm@...ux-foundation.org
To:	torvalds@...ux-foundation.org
Cc:	akpm@...ux-foundation.org, hidehiro.kawai.ez@...achi.com,
	jack@...e.cz, linux-ext4@...r.kernel.org
Subject: [patch 088/148] jbd: abort when failed to log metadata buffers

From: Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>

If we failed to write metadata buffers to the journal space and succeeded
to write the commit record, stale data can be written back to the
filesystem as metadata in the recovery phase.

To avoid this, when we failed to write out metadata buffers, abort the
journal before writing the commit record.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>
Acked-by: Jan Kara <jack@...e.cz>
Cc: <linux-ext4@...r.kernel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

 fs/jbd/commit.c |    3 +++
 1 file changed, 3 insertions(+)

diff -puN fs/jbd/commit.c~jbd-abort-when-failed-to-log-metadata-buffers fs/jbd/commit.c
--- a/fs/jbd/commit.c~jbd-abort-when-failed-to-log-metadata-buffers
+++ a/fs/jbd/commit.c
@@ -762,6 +762,9 @@ wait_for_iobuf:
 		/* AKPM: bforget here */
 	}
 
+	if (err)
+		journal_abort(journal, err);
+
 	jbd_debug(3, "JBD: commit phase 6\n");
 
 	if (journal_write_commit_record(journal, commit_transaction))
_
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html