From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 8F60F1FC110; Sat, 12 Sep 2026 07:41:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789198915; cv=none; b=aNPj+DSeJzYkNixYGqUJdMsuogHjD5rn+cp9+pRIKk2LnLvgxu3tWwUZjdLyPH9X2dQDzyMXQNGDECYqajS1UHfDiMoZvDj85EE1+DOW5dKMLQU6j7q5yI5oeztgaGvTMT0FfJQEAmNnVgCN28+Crb8T34PgSsOvZslLWZgfvGk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789198915; c=relaxed/simple; bh=BMm42OVG7jOUPY56BQJXZAepzNUNfA3ZcTgmEvVKJuY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YTVykbANhL3mPdI9Wy0mxKBlI17RHtTSVN6bDh7SuHfkB6wM45UUKe5Zfp9wWR5s7ac9pTNf8pTUjG2MsxtBSGZ2zrE3ODkH5HPtIOEcnvaFn9fKot2nhqgsxhnjt36LAeP/l6r4Ep2XCzFAjcubOZ105BqDb8KtInbjbBZN1Ic= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ga//7Do6; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Ga//7Do6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB0711F000FF; Sat, 12 Sep 2026 07:41:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789198914; bh=+ppnuUR2+0Ezok17sIVKDlKB4nOC5AKB2HV1n0rU5uU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Ga//7Do64/9wEJOxJBHe9RxWQBZLrR8LnjS4/IdEyjLH69OqwvG8JDnXHPKs7r4Ye cnmM1qCFzcObio2pvS83A7TZUNfI9GwkC5Gx1KvordgE2eeFfBlIEJf4GPQrT3wDWj ++SYH0jNAtQkQTvy+7y4xGX++5u8T9fhsvSpYf7k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jie Zhang , Akhil P Oommen , Konrad Dybcio , Rob Clark , Sasha Levin Subject: [PATCH 7.2 0478/1815] drm/msm: Fix task_struct reference leak in recover_worker Date: Sat, 12 Sep 2026 08:37:08 +0200 Message-ID: <20260912065700.110288018@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065648.999753832@linuxfoundation.org> References: <20260912065648.999753832@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jie Zhang [ Upstream commit 40b793714ad8f393ab3d469f9d00b20ebda46257 ] get_pid_task() increments the task reference count, but the corresponding put_task_struct() was missing in the else branch, leaking a reference on every GPU hang recovery. Fixes: 25654a1756a4 ("drm/msm: Update global fault counter when faulty process has already ended") Signed-off-by: Jie Zhang Signed-off-by: Akhil P Oommen Reviewed-by: Konrad Dybcio Patchwork: https://patchwork.freedesktop.org/patch/730662/ Message-ID: <20260605-assorted-fixes-june-v1-6-2caa04f7287c@oss.qualcomm.com> Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/msm_gpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 48ac51f4119be..03c0578560658 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -505,6 +505,8 @@ static void recover_worker(struct kthread_work *work) */ if (!vm->managed) msm_gem_vm_unusable(submit->vm); + + put_task_struct(task); } noreclaim_flag = memalloc_noreclaim_save(); -- 2.53.0