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 X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0CEC8C43331 for ; Mon, 1 Mar 2021 21:49:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2229600EF for ; Mon, 1 Mar 2021 21:49:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244742AbhCAVtC (ORCPT ); Mon, 1 Mar 2021 16:49:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:48864 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238245AbhCARYA (ORCPT ); Mon, 1 Mar 2021 12:24:00 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1A12A65073; Mon, 1 Mar 2021 16:48:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614617328; bh=573bljVzYWhD4ui2+AHihux+rb4jvs/sMGde0ArCrUE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CmIwShcqa3V/rGsR8zFGTzRBebSkmBTEGnvfW+r9ZH1MfYPBiOjIyWfC2RmIAt9WN 5JVGyw2hGrqFTUeFsWCzH4oVrTQ+vf5siwcwXv2gqLPcGBR9dJVrk2Kvn+z0m7t2OH esE+KK2N+WYJgFuUum9xGKmf9jKWPucoavh+ldXM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ludovic Pouzenc , Hans de Goede Subject: [PATCH 5.4 008/340] virt: vbox: Do not use wait_event_interruptible when called from kernel context Date: Mon, 1 Mar 2021 17:09:12 +0100 Message-Id: <20210301161048.717006737@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161048.294656001@linuxfoundation.org> References: <20210301161048.294656001@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hans de Goede commit c35901b39ddc20077f4ae7b9f7bf344487f62212 upstream. Do not use wait_event_interruptible when vbg_hgcm_call() gets called from kernel-context, such as it being called by the vboxsf filesystem code. This fixes some filesystem related system calls on shared folders unexpectedly failing with -EINTR. Fixes: 0532a1b0d045 ("virt: vbox: Implement passing requestor info to the host for VirtualBox 6.0.x") Reported-by: Ludovic Pouzenc Signed-off-by: Hans de Goede Cc: stable Link: https://lore.kernel.org/r/20210121150754.147598-1-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman --- drivers/virt/vboxguest/vboxguest_utils.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) --- a/drivers/virt/vboxguest/vboxguest_utils.c +++ b/drivers/virt/vboxguest/vboxguest_utils.c @@ -466,7 +466,7 @@ static int hgcm_cancel_call(struct vbg_d * Cancellation fun. */ static int vbg_hgcm_do_call(struct vbg_dev *gdev, struct vmmdev_hgcm_call *call, - u32 timeout_ms, bool *leak_it) + u32 timeout_ms, bool interruptible, bool *leak_it) { int rc, cancel_rc, ret; long timeout; @@ -493,10 +493,15 @@ static int vbg_hgcm_do_call(struct vbg_d else timeout = msecs_to_jiffies(timeout_ms); - timeout = wait_event_interruptible_timeout( - gdev->hgcm_wq, - hgcm_req_done(gdev, &call->header), - timeout); + if (interruptible) { + timeout = wait_event_interruptible_timeout(gdev->hgcm_wq, + hgcm_req_done(gdev, &call->header), + timeout); + } else { + timeout = wait_event_timeout(gdev->hgcm_wq, + hgcm_req_done(gdev, &call->header), + timeout); + } /* timeout > 0 means hgcm_req_done has returned true, so success */ if (timeout > 0) @@ -629,7 +634,8 @@ int vbg_hgcm_call(struct vbg_dev *gdev, hgcm_call_init_call(call, client_id, function, parms, parm_count, bounce_bufs); - ret = vbg_hgcm_do_call(gdev, call, timeout_ms, &leak_it); + ret = vbg_hgcm_do_call(gdev, call, timeout_ms, + requestor & VMMDEV_REQUESTOR_USERMODE, &leak_it); if (ret == 0) { *vbox_status = call->header.result; ret = hgcm_call_copy_back_result(call, parms, parm_count,