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 30C9A1EA72 for ; Tue, 25 Jul 2023 10:48:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9DBEAC433C7; Tue, 25 Jul 2023 10:48:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690282121; bh=NVZFQdo3THDP+NPb0zeIaH4tSuEXZVBjnIO3q8SPIY8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kqlnm1o9SgaLHh564gllzTCcKr656YQ8bp30bLTKZCTJKMIgaaQUCbLz7pAsajdlL t0VkuSPpFesp1rT5qcTl+AXGD4EhNV1W8pZWBCVL2gXXxBSzIA8+xmAxsvBSOX3zQi PiPX/Sfy0PXokwlIHNKvaJ/iRw7QBb7in2qA5C/E= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xu Rongbo , Miklos Szeredi Subject: [PATCH 6.4 016/227] fuse: revalidate: dont invalidate if interrupted Date: Tue, 25 Jul 2023 12:43:03 +0200 Message-ID: <20230725104515.462227578@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104514.821564989@linuxfoundation.org> References: <20230725104514.821564989@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 @@ -258,7 +258,7 @@ 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) || fuse_stale_inode(inode, outarg.generation, &outarg.attr))