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 D522238837E; Fri, 24 Apr 2026 13:33:51 +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=1777037631; cv=none; b=mbAhngWGhDCBoYiIS6A0YNDqUD2dwjb+FvEnZ6Ei87i3mpf3yNmwZX2usA72I5xlo26tJfB2lf6Mg1MPr8+3cAQj3AoiRkbdVw559Uz66ZkWrtetWJGIDfBTaF90jtw9urOk4BG+b77YtUGs+xzO1uUctp8TVRteF3g9uKr7+O4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777037631; c=relaxed/simple; bh=WhRLOHwOUJRdCzA4xAw4y5ZRFo+tlTNQrJkQleCQpsM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fNgLSkKrgyVUPxQ0DmOnEsP7+s+3fisHQonZye0TzWVkmmqsA6Yuw/tvWc6KkMdmat2gMiIQgQneIYQGrwfPzopxzAx113i77zNtF2JNb3WhBfhfv06DPF5iVmJ/zZomeN/R8pTUKxj3bH8X4vLdU/udvFUemrS7sHgAqCUvQ/U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=t4SUEe13; 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="t4SUEe13" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3551BC19425; Fri, 24 Apr 2026 13:33:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1777037631; bh=WhRLOHwOUJRdCzA4xAw4y5ZRFo+tlTNQrJkQleCQpsM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t4SUEe13aUv2dpbB39t2EaP4IyKrXsPbKsMJS65vhxLgCMQ/mIH6IfCG9/PZIEMer 2ZTgrSa1+QiPKbcgL4LaFHaCjATEOSK4N4Xil9jT2XuPcIcasxggfrsPAPHPDBXwzb aKykbqYpbpezmHMkzyC5iH5T99whwKuPZiLkHIoo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Boris Burkov , Goldwyn Rodrigues , David Sterba , Sasha Levin Subject: [PATCH 6.6 010/166] btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() Date: Fri, 24 Apr 2026 15:28:44 +0200 Message-ID: <20260424132535.049328709@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260424132532.812258529@linuxfoundation.org> References: <20260424132532.812258529@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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Goldwyn Rodrigues [ Upstream commit a85b46db143fda5869e7d8df8f258ccef5fa1719 ] If overlay is used on top of btrfs, dentry->d_sb translates to overlay's super block and fsid assignment will lead to a crash. Use file_inode(file)->i_sb to always get btrfs_sb. Reviewed-by: Boris Burkov Signed-off-by: Goldwyn Rodrigues Signed-off-by: David Sterba Signed-off-by: Sasha Levin --- include/trace/events/btrfs.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index eb762cc7bec53..2364c68df76c4 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -789,12 +789,15 @@ TRACE_EVENT(btrfs_sync_file, ), TP_fast_assign( - const struct dentry *dentry = file->f_path.dentry; - const struct inode *inode = d_inode(dentry); + struct dentry *dentry = file_dentry(file); + struct inode *inode = file_inode(file); + struct dentry *parent = dget_parent(dentry); + struct inode *parent_inode = d_inode(parent); - TP_fast_assign_fsid(btrfs_sb(file->f_path.dentry->d_sb)); + dput(parent); + TP_fast_assign_fsid(btrfs_sb(inode->i_sb)); __entry->ino = btrfs_ino(BTRFS_I(inode)); - __entry->parent = btrfs_ino(BTRFS_I(d_inode(dentry->d_parent))); + __entry->parent = btrfs_ino(BTRFS_I(parent_inode)); __entry->datasync = datasync; __entry->root_objectid = BTRFS_I(inode)->root->root_key.objectid; -- 2.53.0