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 CCFC83D6484; Mon, 4 May 2026 14:17:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777904223; cv=none; b=rWPunjfDe0KCRZrqr8slrj+NxInBOzQ218w/Et24aKqjYshECq2eIy2Ng+VTF4ZTrDNY/T242oPV41trmrApKgABd+Jw1L5yNb4SibeX20HigJ6u6m04JTHLMZlfYBAsY3x1dm63iPtdWi91xBv3k+wskd5+K14dGkpCO8fj6gQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777904223; c=relaxed/simple; bh=4AhOORJ8BizF22mehPQuCZMteL2EBRTr0uv+5wMy+Rw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YID/qz1lWmvve36b5JawE4Ndy0y1/5Jti01lQSBiPpSv2KO0Id5jSHy0MLp66OeIVRq36X2CudLn0wQFF8IgDn0iPyYcS4kCBPLiO0wUsS3IY2QrvOA+WTDRLGX7NHU2XyXplWPCyXl/bqWq5CQ1y/q8hbElfOfM8pnw0HJVTBE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NKGwpr+K; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="NKGwpr+K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6168FC2BCB8; Mon, 4 May 2026 14:17:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1777904223; bh=4AhOORJ8BizF22mehPQuCZMteL2EBRTr0uv+5wMy+Rw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NKGwpr+KiHsf4tgAvkxWPhR+QUTQM6zWJ9zF2AA+1//zVQcJfC4PYSAatTrx8Yhnx syIjNDgP5ZkMvfk164tC1ui8LzuDyl3LDz283/O1+y1l8a8N9UpDDe7k3kULNHK9tW gRwnx1OwUp9YqXfEv9DuAvFLtABjTMIPYaAx4FNc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sohei Koyama , Andreas Dilger , "Ritesh Harjani (IBM)" , Zhang Yi , Baokun Li , Theodore Tso Subject: [PATCH 6.18 198/275] ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() Date: Mon, 4 May 2026 15:52:18 +0200 Message-ID: <20260504135150.431868205@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260504135142.929052779@linuxfoundation.org> References: <20260504135142.929052779@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sohei Koyama commit 77d059519382bd66283e6a4e83ee186e87e7708f upstream. The commit c8e008b60492 ("ext4: ignore xattrs past end") introduced a refcount leak in when block_csum is false. ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to get iloc.bh, but never releases it with brelse(). Fixes: c8e008b60492 ("ext4: ignore xattrs past end") Signed-off-by: Sohei Koyama Reviewed-by: Andreas Dilger Reviewed-by: Ritesh Harjani (IBM) Cc: stable@vger.kernel.org Reviewed-by: Zhang Yi Reviewed-by: Baokun Li Link: https://patch.msgid.link/20260406074830.8480-1-skoyama@ddn.com Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- fs/ext4/xattr.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1165,7 +1165,7 @@ ext4_xattr_inode_dec_ref_all(handle_t *h { struct inode *ea_inode; struct ext4_xattr_entry *entry; - struct ext4_iloc iloc; + struct ext4_iloc iloc = { .bh = NULL }; bool dirty = false; unsigned int ea_ino; int err; @@ -1260,6 +1260,8 @@ ext4_xattr_inode_dec_ref_all(handle_t *h ext4_warning_inode(parent, "handle dirty metadata err=%d", err); } + + brelse(iloc.bh); } /*