This is a note to let you know that I've just added the patch titled
erofs: fix potential return value overflow of z_erofs_shrink_scan()
to the 6.12-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:
erofs-fix-potential-return-value-overflow-of-z_erofs.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 81fdce82147348f21c5996481b4e9d1825535aea
Author: Gao Xiang <xiang@xxxxxxxxxx>
Date: Tue Jan 14 12:00:58 2025 +0800
erofs: fix potential return value overflow of z_erofs_shrink_scan()
[ Upstream commit db902986dee453bfb5835cbc8efa67154ab34caf ]
z_erofs_shrink_scan() could return small numbers due to the mistyped
`freed`.
Although I don't think it has any visible impact.
Fixes: 3883a79abd02 ("staging: erofs: introduce VLE decompression support")
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20250114040058.459981-1-hsiangkao@xxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 6be6146b67d9c..a8fb4b525f544 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -923,8 +923,7 @@ unsigned long z_erofs_shrink_scan(struct erofs_sb_info *sbi,
unsigned long nr_shrink)
{
struct z_erofs_pcluster *pcl;
- unsigned int freed = 0;
- unsigned long index;
+ unsigned long index, freed = 0;
xa_lock(&sbi->managed_pslots);
xa_for_each(&sbi->managed_pslots, index, pcl) {
