This is a note to let you know that I've just added the patch titled
f2fs: avoid format-overflow warning
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:
f2fs-avoid-format-overflow-warning.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 e0d4e8acb3789c5a8651061fbab62ca24a45c063 Mon Sep 17 00:00:00 2001
From: Su Hui <suhui@xxxxxxxxxxxx>
Date: Sun, 8 Oct 2023 14:39:30 +0800
Subject: f2fs: avoid format-overflow warning
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From: Su Hui <suhui@xxxxxxxxxxxx>
commit e0d4e8acb3789c5a8651061fbab62ca24a45c063 upstream.
With gcc and W=1 option, there's a warning like this:
fs/f2fs/compress.c: In function ‘f2fs_init_page_array_cache’:
fs/f2fs/compress.c:1984:47: error: ‘%u’ directive writing between
1 and 7 bytes into a region of size between 5 and 8
[-Werror=format-overflow=]
1984 | sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev),
MINOR(dev));
| ^~
String "f2fs_page_array_entry-%u:%u" can up to 35. The first "%u" can up
to 4 and the second "%u" can up to 7, so total size is "24 + 4 + 7 = 35".
slab_name's size should be 35 rather than 32.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/f2fs/compress.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1906,7 +1906,7 @@ void f2fs_destroy_compress_inode(struct
int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi)
{
dev_t dev = sbi->sb->s_bdev->bd_dev;
- char slab_name[32];
+ char slab_name[35];
sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), MINOR(dev));
Patches currently in stable-queue which might be from suhui@xxxxxxxxxxxx are
queue-5.15/f2fs-avoid-format-overflow-warning.patch
queue-5.15/9p-v9fs_listxattr-fix-s-null-argument-warning.patch
