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 017481773D for ; Wed, 9 Aug 2023 11:19:50 +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 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 @@ -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)