FAILED: patch "[PATCH] xfs: jump out of xchk_bmap_check_rmap if fatal signals" failed to apply to 5.10-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 5.10-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-5.10.y
git checkout FETCH_HEAD
git cherry-pick -x 49d300a51442bd64b627645b7b0b1cd66e492905
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026110430-implant-perch-2ec4@gregkh' --subject-prefix 'PATCH 5.10.y' 'HEAD^..'

Possible dependencies:



thanks,

greg k-h

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

From 49d300a51442bd64b627645b7b0b1cd66e492905 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <djwong@kernel.org>
Date: Thu, 24 Sep 2026 21:13:06 -0700
Subject: [PATCH] xfs: jump out of xchk_bmap_check_rmap if fatal signals

LOLLM observes that we never check for fatal signals inside the loop
that checks file fork mappings against the rmapbt.  This can lead to
lengthy delays in responding to a ^C, so add some bailout checks.

Cc: stable@vger.kernel.org # v4.17
Fixes: 5e777b62b0bcb6 ("xfs: bmap scrubber should do rmap xref with bmap for sparse files")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c
index c190590bc562..4dff40dd426a 100644
--- a/fs/xfs/scrub/bmap.c
+++ b/fs/xfs/scrub/bmap.c
@@ -625,6 +625,10 @@ xchk_bmap_check_rmap(
 	struct xfs_ifork		*ifp;
 	struct xfs_scrub		*sc = sbcri->sc;
 	bool				have_map;
+	int				error = 0;
+
+	if (xchk_should_terminate(sc, &error))
+		return error;
 
 	/* Is this even the right fork? */
 	if (rec->rm_owner != I_INO(sc->ip))
@@ -656,6 +660,9 @@ xchk_bmap_check_rmap(
 	 */
 	check_rec = *rec;
 	while (have_map) {
+		if (xchk_should_terminate(sc, &error))
+			return error;
+
 		if (irec.br_startoff != check_rec.rm_offset)
 			xchk_fblock_set_corrupt(sc, sbcri->whichfork,
 					check_rec.rm_offset);