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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7CA9C43217 for ; Fri, 1 Apr 2022 15:13:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353602AbiDAPKp (ORCPT ); Fri, 1 Apr 2022 11:10:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60612 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351233AbiDAOsg (ORCPT ); Fri, 1 Apr 2022 10:48:36 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 719B51EC617; Fri, 1 Apr 2022 07:39:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 2BF34B82504; Fri, 1 Apr 2022 14:38:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0E15C36AE2; Fri, 1 Apr 2022 14:38:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1648823925; bh=vMu8pWYKMJZ864kGxfeosTglLSDtISoLZi7BhO4s0GQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K3Czenc593WJYW5FaavrTRroL55dYNMkUk+QNeSWuwBhhO8T7le1w81q/Ir3rd+jy wFG8p81fj+6ZXukJHp/2SlsDMIB3YGu3AK8qrMfVLWqGKI520RJjsdzXh7tazDNQ5c pUXyXvLtuwhULu2axzJTX/F/YLb083/C5CsufrLRhy/gt6xKqlVjPyscTX0ekI0g7X h6lkLsIYZvrVp8jkXwoIWJ1GBHmNJstEi3E2GkOF/i6gB/cKZ3IJ7SIA2DNdNXxG9f N2+DrSGVz2j/05gkgQo73T81HOisDTkBjE69tjs6gzH+r9TCiQbw7RdAoqgWt0cnL6 KN0+ynGFKHs6Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yongzhi Liu , Melissa Wen , Melissa Wen , Sasha Levin , emma@anholt.net, airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.15 21/98] drm/v3d: fix missing unlock Date: Fri, 1 Apr 2022 10:36:25 -0400 Message-Id: <20220401143742.1952163-21-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220401143742.1952163-1-sashal@kernel.org> References: <20220401143742.1952163-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yongzhi Liu [ Upstream commit e57c1a3bd5e8e0c7181f65ae55581f0236a8f284 ] [why] Unlock is needed on the error handling path to prevent dead lock. v3d_submit_cl_ioctl and v3d_submit_csd_ioctl is missing unlock. [how] Fix this by changing goto target on the error handling path. So changing the goto to target an error handling path that includes drm_gem_unlock reservations. Signed-off-by: Yongzhi Liu Reviewed-by: Melissa Wen Signed-off-by: Melissa Wen Link: https://patchwork.freedesktop.org/patch/msgid/1643377262-109975-1-git-send-email-lyz_cs@pku.edu.cn Signed-off-by: Sasha Levin --- drivers/gpu/drm/v3d/v3d_gem.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c index 772b5831bcc6..805d6f6cba0e 100644 --- a/drivers/gpu/drm/v3d/v3d_gem.c +++ b/drivers/gpu/drm/v3d/v3d_gem.c @@ -625,7 +625,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data, if (!render->base.perfmon) { ret = -ENOENT; - goto fail; + goto fail_perfmon; } } @@ -678,6 +678,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data, fail_unreserve: mutex_unlock(&v3d->sched_lock); +fail_perfmon: drm_gem_unlock_reservations(last_job->bo, last_job->bo_count, &acquire_ctx); fail: @@ -854,7 +855,7 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data, args->perfmon_id); if (!job->base.perfmon) { ret = -ENOENT; - goto fail; + goto fail_perfmon; } } @@ -886,6 +887,7 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data, fail_unreserve: mutex_unlock(&v3d->sched_lock); +fail_perfmon: drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count, &acquire_ctx); fail: -- 2.34.1