This is a note to let you know that I've just added the patch titled
ceph: fix type promotion bug on 32bit systems
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ceph-fix-type-promotion-bug-on-32bit-systems.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 07bb00ef00ace88dd6f695fadbba76565756e55c Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Sat, 7 Oct 2023 11:52:39 +0300
Subject: ceph: fix type promotion bug on 32bit systems
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit 07bb00ef00ace88dd6f695fadbba76565756e55c upstream.
In this code "ret" is type long and "src_objlen" is unsigned int. The
problem is that on 32bit systems, when we do the comparison signed longs
are type promoted to unsigned int. So negative error codes from
do_splice_direct() are treated as success instead of failure.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 1b0c3b9f91f0 ("ceph: re-org copy_file_range and fix some error paths")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Xiubo Li <xiubli@xxxxxxxxxx>
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ceph/file.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -2436,7 +2436,7 @@ static ssize_t __ceph_copy_file_range(st
ret = do_splice_direct(src_file, &src_off, dst_file,
&dst_off, src_objlen, flags);
/* Abort on short copies or on error */
- if (ret < src_objlen) {
+ if (ret < (long)src_objlen) {
dout("Failed partial copy (%zd)\n", ret);
goto out;
}
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-5.15/ixgbe-fix-crash-with-empty-vf-macvlan-list.patch
queue-5.15/drm-msm-dsi-fix-irq_of_parse_and_map-error-checking.patch
queue-5.15/mlxsw-fix-mlxsw_sp2_nve_vxlan_learning_set-return-ty.patch
queue-5.15/ceph-fix-type-promotion-bug-on-32bit-systems.patch
