From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8BBBAEB64DD for ; Wed, 9 Aug 2023 11:19:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233509AbjHILTw (ORCPT ); Wed, 9 Aug 2023 07:19:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233506AbjHILTw (ORCPT ); Wed, 9 Aug 2023 07:19:52 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D175AFA for ; Wed, 9 Aug 2023 04:19:51 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 685FB631CC for ; Wed, 9 Aug 2023 11:19:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A3D7C433CB; Wed, 9 Aug 2023 11:19:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691579990; bh=eiyvl/okVesoN/JuYzffwuxLxyQhoO84+sCbZkaRyRc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T07bUd1wACxNC8wsOYbl2xX2iNFIMbG9i5r40Lsg0zx1eSbPjYnvuYw/js1yJm9HF J6h0D1jomRM9Ay7Sbz1Rl7VxhudJsLucLm1e+wV7ghEQiqAFFwIdub4Mpux2TKa32K xcYzsFey+h04xXYAkzBGaoSdoHdjFEwTI1yPkcaA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xu Rongbo , Miklos Szeredi Subject: [PATCH 4.19 188/323] fuse: revalidate: dont invalidate if interrupted Date: Wed, 9 Aug 2023 12:40:26 +0200 Message-ID: <20230809103706.774645552@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103658.104386911@linuxfoundation.org> References: <20230809103658.104386911@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 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 @@ -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)