This is a note to let you know that I've just added the patch titled
fuse: check s_root when destroying sb
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:
fuse-check-s_root-when-destroying-sb.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 d534d31d6a45d71de61db22090b4820afb68fddc Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Date: Thu, 21 Oct 2021 10:01:38 +0200
Subject: fuse: check s_root when destroying sb
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
commit d534d31d6a45d71de61db22090b4820afb68fddc upstream.
Checking "fm" works because currently sb->s_fs_info is cleared on error
paths; however, sb->s_root is what generic_shutdown_super() checks to
determine whether the sb was fully initialized or not.
This change will allow cleanup of sb setup error paths.
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Signed-off-by: Yang Bo <yb203166@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/fuse/inode.c | 2 +-
fs/fuse/virtio_fs.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1596,7 +1596,7 @@ static void fuse_kill_sb_blk(struct supe
struct fuse_mount *fm = get_fuse_mount_super(sb);
bool last;
- if (fm) {
+ if (sb->s_root) {
last = fuse_mount_remove(fm);
if (last)
fuse_conn_destroy(fm);
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -1399,7 +1399,7 @@ static void virtio_kill_sb(struct super_
bool last;
/* If mount failed, we can still be called without any fc */
- if (fm) {
+ if (sb->s_root) {
last = fuse_mount_remove(fm);
if (last)
virtio_fs_conn_destroy(fm);
Patches currently in stable-queue which might be from mszeredi@xxxxxxxxxx are
queue-5.10/virtiofs-split-requests-that-exceed-virtqueue-size.patch
queue-5.10/virtiofs-clean-up-error-handling-in-virtio_fs_get_tree.patch
queue-5.10/fuse-always-revalidate-rename-target-dentry.patch
queue-5.10/fuse-check-s_root-when-destroying-sb.patch
queue-5.10/fuse-fix-attr-version-comparison-in-fuse_read_update_size.patch
queue-5.10/fuse-fix-deadlock-between-atomic-o_trunc-and-page-invalidation.patch
