From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 042ED14263 for ; Tue, 25 Jul 2023 11:47:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7D6B7C433C8; Tue, 25 Jul 2023 11:47:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690285642; bh=/6qy0W4HWDIn7gndrX9MwiTGc78ncsM+UWjHWgGq3vg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t+3yiIfhnlvPaLdiWPrR0UU1NXxZjuLvUBhTkKf6RB8D2Wb6WUwBqItVOqYm/6oUH u5bg2oRsyRdwNh/nIxD+BxlumQn7gyDetQq9mvSVnZV8KfxjSlRQlla1PB2TDwgmcd I/qhBrQJTv/1e88Hw95uKk9Qy+XLUEX2M1epq2Ng= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xu Rongbo , Miklos Szeredi Subject: [PATCH 5.4 278/313] fuse: revalidate: dont invalidate if interrupted Date: Tue, 25 Jul 2023 12:47:11 +0200 Message-ID: <20230725104533.106715449@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104521.167250627@linuxfoundation.org> References: <20230725104521.167250627@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Miklos Szeredi 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 Closes: https://lore.kernel.org/all/CAJfpegswN_CJJ6C3RZiaK6rpFmNyWmXfaEpnQUJ42KCwNF5tWw@mail.gmail.com/ Fixes: 9e6268db496a ("[PATCH] FUSE - read-write operations") Cc: Signed-off-by: Miklos Szeredi Signed-off-by: Greg Kroah-Hartman --- 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)