FAILED: patch "[PATCH] gfs2: fix freeze error handling" failed to apply to 6.12-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.12-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y
git checkout FETCH_HEAD
git cherry-pick -x 4cfc7d5a4a01d2133b278cdbb1371fba1b419174
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2025122906-preshow-nearest-b359@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 4cfc7d5a4a01d2133b278cdbb1371fba1b419174 Mon Sep 17 00:00:00 2001
From: Alexey Velichayshiy <a.velichayshiy@ispras.ru>
Date: Mon, 17 Nov 2025 12:05:18 +0300
Subject: [PATCH] gfs2: fix freeze error handling

After commit b77b4a4815a9 ("gfs2: Rework freeze / thaw logic"),
the freeze error handling is broken because gfs2_do_thaw()
overwrites the 'error' variable, causing incorrect processing
of the original freeze error.

Fix this by calling gfs2_do_thaw() when gfs2_lock_fs_check_clean()
fails but ignoring its return value to preserve the original
freeze error for proper reporting.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: b77b4a4815a9 ("gfs2: Rework freeze / thaw logic")
Cc: stable@vger.kernel.org # v6.5+
Signed-off-by: Alexey Velichayshiy <a.velichayshiy@ispras.ru>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 644b2d1e7276..54c6f2098f01 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -749,9 +749,7 @@ static int gfs2_freeze_super(struct super_block *sb, enum freeze_holder who,
 			break;
 		}
 
-		error = gfs2_do_thaw(sdp, who, freeze_owner);
-		if (error)
-			goto out;
+		(void)gfs2_do_thaw(sdp, who, freeze_owner);
 
 		if (error == -EBUSY)
 			fs_err(sdp, "waiting for recovery before freeze\n");