This is a note to let you know that I've just added the patch titled
f2fs: fix to do sanity check in is_alive()
to the 5.10-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-fix-to-do-sanity-check-in-is_alive.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 77900c45ee5cd5da63bd4d818a41dbdf367e81cd Mon Sep 17 00:00:00 2001
From: Chao Yu <chao@xxxxxxxxxx>
Date: Mon, 6 Dec 2021 22:44:21 +0800
Subject: f2fs: fix to do sanity check in is_alive()
From: Chao Yu <chao@xxxxxxxxxx>
commit 77900c45ee5cd5da63bd4d818a41dbdf367e81cd upstream.
In fuzzed image, SSA table may indicate that a data block belongs to
invalid node, which node ID is out-of-range (0, 1, 2 or max_nid), in
order to avoid migrating inconsistent data in such corrupted image,
let's do sanity check anyway before data block migration.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/f2fs/gc.c | 3 +++
1 file changed, 3 insertions(+)
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -998,6 +998,9 @@ static bool is_alive(struct f2fs_sb_info
set_sbi_flag(sbi, SBI_NEED_FSCK);
}
+ if (f2fs_check_nid_range(sbi, dni->ino))
+ return false;
+
*nofs = ofs_of_node(node_page);
source_blkaddr = data_blkaddr(NULL, node_page, ofs_in_node);
f2fs_put_page(node_page, 1);
Patches currently in stable-queue which might be from chao@xxxxxxxxxx are
queue-5.10/f2fs-fix-to-do-sanity-check-in-is_alive.patch
