From: Miklos Szeredi mszeredi@redhat.com
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@baidu.com Closes: https://lore.kernel.org/all/CAJfpegswN_CJJ6C3RZiaK6rpFmNyWmXfaEpnQUJ42KCwNF5... Fixes: 9e6268db496a ("[PATCH] FUSE - read-write operations") Cc: stable@vger.kernel.org Signed-off-by: Miklos Szeredi mszeredi@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/fuse/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -246,7 +246,7 @@ static int fuse_dentry_revalidate(struct spin_unlock(&fi->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)