This is a note to let you know that I've just added the patch titled
fuse: revalidate: don't invalidate if interrupted
to the 4.19-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-revalidate-don-t-invalidate-if-interrupted.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a9d1c4c6df0e568207907c04aed9e7beb1294c42 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Date: Wed, 7 Jun 2023 17:49:20 +0200
Subject: fuse: revalidate: don't invalidate if interrupted
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
commit a9d1c4c6df0e568207907c04aed9e7beb1294c42 upstream.
If the LOOKUP request triggered from fuse_dentry_revalidate() is
interrupted, then the dentry will be invalidated, possibly resulting in
submounts being unmounted.
Reported-by: Xu Rongbo <xurongbo@xxxxxxxxx>
Closes: https://lore.kernel.org/all/CAJfpegswN_CJJ6C3RZiaK6rpFmNyWmXfaEpnQUJ42KCwNF5tWw@xxxxxxxxxxxxxx/
Fixes: 9e6268db496a ("[PATCH] FUSE - read-write operations")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/fuse/dir.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -232,7 +232,7 @@ static int fuse_dentry_revalidate(struct
spin_unlock(&fc->lock);
}
kfree(forget);
- if (ret == -ENOMEM)
+ if (ret == -ENOMEM || ret == -EINTR)
goto out;
if (ret || fuse_invalid_attr(&outarg.attr) ||
(outarg.attr.mode ^ inode->i_mode) & S_IFMT)
Patches currently in stable-queue which might be from mszeredi@xxxxxxxxxx are
queue-4.19/fuse-revalidate-don-t-invalidate-if-interrupted.patch
