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 231E42E62CD; Thu, 3 Jul 2025 14:57:47 +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=1751554667; cv=none; b=jUIMX7Izd5rtkiIcfkmJJY9PavJqknigfIxjneNOsPEX/wB6QG4o829jnJ3ZX6oSQFGvnGLT3EQJ3mJmuERzSWtO2IGUT5ncL9Jzcmm7Hc50jry2FPojRkGakS55Z3xS0+XkgG2HZypc4vUXA4gVIEdRAdgnohX6Su9E1mFWOzY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751554667; c=relaxed/simple; bh=1Z8M5JJReOoGgDwiM+kc6jT2DPoZHry5ItJH2j4zUAI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=XbGvhYTih9szEfH/vilmHKMk7WHEZPvV1QUL3keLyJ+yGrgk6isADjKLEcXW+DvQ/kiPUTuDk6RVqllQycLJjPyw27xlsv60blz8K6fcadtvQD5yVEQgTKMC5S45f1M9cvawSr+Zu55yRcRnlb5u2YXW69eK5jgcpya648eGrJM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=MhcwODox; 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="MhcwODox" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A8389C4CEE3; Thu, 3 Jul 2025 14:57:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751554667; bh=1Z8M5JJReOoGgDwiM+kc6jT2DPoZHry5ItJH2j4zUAI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MhcwODoxJ9G+VUUFLzeSEuzg7G2EAUz+g0eFffo17PP/9CvvFGc6mlkvoyVhXDucz ZZqsQG4nhb+Wb5c2A9eH0X/VYYWhVDuQ1hbNAN6lroyVknlrob6yAVJ0oQUUTCSVBZ MLAEsn1OA/Pozxr9IHW30vzIR/JoQ6wOY/Y7uGtg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Lin.Cao" , Philipp Stanner , =?UTF-8?q?Christian=20K=C3=B6nig?= , Sasha Levin Subject: [PATCH 6.15 043/263] drm/scheduler: signal scheduled fence when kill job Date: Thu, 3 Jul 2025 16:39:23 +0200 Message-ID: <20250703144006.034794120@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250703144004.276210867@linuxfoundation.org> References: <20250703144004.276210867@linuxfoundation.org> User-Agent: quilt/0.68 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-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lin.Cao [ Upstream commit 471db2c2d4f80ee94225a1ef246e4f5011733e50 ] When an entity from application B is killed, drm_sched_entity_kill() removes all jobs belonging to that entity through drm_sched_entity_kill_jobs_work(). If application A's job depends on a scheduled fence from application B's job, and that fence is not properly signaled during the killing process, application A's dependency cannot be cleared. This leads to application A hanging indefinitely while waiting for a dependency that will never be resolved. Fix this issue by ensuring that scheduled fences are properly signaled when an entity is killed, allowing dependent applications to continue execution. Signed-off-by: Lin.Cao Reviewed-by: Philipp Stanner Signed-off-by: Christian König Link: https://lore.kernel.org/r/20250515020713.1110476-1-lincao12@amd.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/scheduler/sched_entity.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c index bd39db7bb2408..e671aa2417206 100644 --- a/drivers/gpu/drm/scheduler/sched_entity.c +++ b/drivers/gpu/drm/scheduler/sched_entity.c @@ -176,6 +176,7 @@ static void drm_sched_entity_kill_jobs_work(struct work_struct *wrk) { struct drm_sched_job *job = container_of(wrk, typeof(*job), work); + drm_sched_fence_scheduled(job->s_fence, NULL); drm_sched_fence_finished(job->s_fence, -ESRCH); WARN_ON(job->s_fence->parent); job->sched->ops->free_job(job); -- 2.39.5