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 7E835BE46; Tue, 8 Jul 2025 16:52:58 +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=1751993578; cv=none; b=sCk8eFMd5oMySroY53UdKNymSAHT36c1//cPmyeRdrxpflx3x9zMQHFyCrszpXGfMvSgdUp31IEIVnr86pW986TKlHQn/Z3V+wjbItWEjDmW5GkpcO4hchd7bOGoRLoWXuYI2vrjQbpsv+eRDogb35GL8mLfJu0Gd6iwil/OvSA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751993578; c=relaxed/simple; bh=rJIwN/nKO4eZTnFCRR1MpbNMpyCvPsomTs2iURrdYy8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=a/tG7GPjDiwzCdzPiQtWW2cqA/BdPRSXx0wLDF0QkvRxNQMmdUrW+UMIHDFnQ4OzWi9aqLuxH4utZ4Rbf6O9Do3G2EjPRq+hDN9rizc3iDQa/eofDG/nGxx6OK2apruc7hFI1SsB+PrpZtqUF1l7Eoj2CzR2zuWQhSatdNpoc4U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ER3aQTHd; 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="ER3aQTHd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F120CC4CEED; Tue, 8 Jul 2025 16:52:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751993578; bh=rJIwN/nKO4eZTnFCRR1MpbNMpyCvPsomTs2iURrdYy8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ER3aQTHdtryWUrNp511lq++sjRBRRxvdo3Ng0p0ZpEIWt9E7eeQp4cf8zfRXK36rD oSkx5EUBtgyBGwPfoOHHnGTr8ZHzda4IYDDLs/bR9Bi4W7ZviPBGYbSxcMfLFdG3SV vJosE/pDLmqNPO2baN5WuWuJc1xLWxO6a28pxCeQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Rob Clark , Rob Clark , Sasha Levin Subject: [PATCH 6.15 122/178] drm/msm: Fix a fence leak in submit error path Date: Tue, 8 Jul 2025 18:22:39 +0200 Message-ID: <20250708162239.782454270@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162236.549307806@linuxfoundation.org> References: <20250708162236.549307806@linuxfoundation.org> User-Agent: quilt/0.68 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 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Rob Clark [ Upstream commit 5d319f75ccf7f0927425a7545aa1a22b3eedc189 ] In error paths, we could unref the submit without calling drm_sched_entity_push_job(), so msm_job_free() will never get called. Since drm_sched_job_cleanup() will NULL out the s_fence, we can use that to detect this case. Signed-off-by: Rob Clark Patchwork: https://patchwork.freedesktop.org/patch/653584/ Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/msm_gem_submit.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 3e9aa2cc38ef9..b2aeaecaa39b3 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -85,6 +85,15 @@ void __msm_gem_submit_destroy(struct kref *kref) container_of(kref, struct msm_gem_submit, ref); unsigned i; + /* + * In error paths, we could unref the submit without calling + * drm_sched_entity_push_job(), so msm_job_free() will never + * get called. Since drm_sched_job_cleanup() will NULL out + * s_fence, we can use that to detect this case. + */ + if (submit->base.s_fence) + drm_sched_job_cleanup(&submit->base); + if (submit->fence_id) { spin_lock(&submit->queue->idr_lock); idr_remove(&submit->queue->fence_idr, submit->fence_id); -- 2.39.5