From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 4A34A3D75BA for ; Mon, 27 Apr 2026 15:48:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777304884; cv=none; b=elRmCQba0m6rgqXlDbvyAFp64q2U8QMV96M1GN36+5Nc4TzNdOP/cWbu5LDygb3mVhLrBh20xoBB/lTZ1bQEmtE+kGvqOPC8anthLR233wnUJDGZ+oWOsXhOrzg69M3QlyXzSgeONztY7h/fGOske/AWs63eT3qUxEIiM4+jJ2M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777304884; c=relaxed/simple; bh=5QREYDZ853cnryQHJ1yTlusLm/biu/XfvMWK4YdBhBs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WHLQiJGFgcREPUnX+6o1it5Du1w3sWDM9+1ciGyajsEFh7i7nIWp2LHrS/CECNb4SVtf7m+qF/Kl7Pm3MyCnAvh9Y0NwoTn432n4PS0BErDQkPn1kd2s76W/NaVAIApTqvzHHeO1j1/RlIMaEtxm7asM+gUSviveYgM67u8VLCI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Fo07Y7u4; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Fo07Y7u4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1777304882; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HZzlSw2rTGIAd1QOD9s2kRLtq32SYiSJ31hk3o8bXSQ=; b=Fo07Y7u4/xPaEZmFKF+Jf6ahi3oX1kmDj4wUsAjr8gZGsYRQAMwTQWzkwfEfl6f3s8Ps3K v2Qd4WmInlOeE1VewJ3rYjI6c2Vh3nODEvfb9iPdzoIPs/bdJKP3QbEc49oXl99sVknhl8 WliWYaxTkaNLq0uK6syjtjdGmmTxTTc= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-311-ca3hdlebOF6rWEa76BVDRA-1; Mon, 27 Apr 2026 11:47:56 -0400 X-MC-Unique: ca3hdlebOF6rWEa76BVDRA-1 X-Mimecast-MFC-AGG-ID: ca3hdlebOF6rWEa76BVDRA_1777304875 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 4EFF119560B0; Mon, 27 Apr 2026 15:47:55 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.44.32.126]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 53946300070A; Mon, 27 Apr 2026 15:47:52 +0000 (UTC) From: David Howells To: Christian Brauner Cc: David Howells , Paulo Alcantara , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Matthew Wilcox Subject: [PATCH v4 15/22] netfs: Fix leak of request in netfs_write_begin() error handling Date: Mon, 27 Apr 2026 16:46:30 +0100 Message-ID: <20260427154639.180684-16-dhowells@redhat.com> In-Reply-To: <20260427154639.180684-1-dhowells@redhat.com> References: <20260427154639.180684-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Fix netfs_write_begin() to not leak our ref on the request in the event that we get an error from netfs_wait_for_read(). Fixes: 4090b31422a6 ("netfs: Add a function to consolidate beginning a read") Closes: https://sashiko.dev/#/patchset/20260414082004.3756080-1-dhowells%40redhat.com Signed-off-by: David Howells cc: Paulo Alcantara cc: Matthew Wilcox cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org --- fs/netfs/buffered_read.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/netfs/buffered_read.c b/fs/netfs/buffered_read.c index a406b5ac120a..71ab81b3f609 100644 --- a/fs/netfs/buffered_read.c +++ b/fs/netfs/buffered_read.c @@ -692,9 +692,9 @@ int netfs_write_begin(struct netfs_inode *ctx, netfs_read_to_pagecache(rreq, NULL); ret = netfs_wait_for_read(rreq); + netfs_put_request(rreq, netfs_rreq_trace_put_return); if (ret < 0) goto error; - netfs_put_request(rreq, netfs_rreq_trace_put_return); have_folio: ret = folio_wait_private_2_killable(folio);