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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Dec 2024 21:38:40.5526 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 45838a27-bce6-4809-edf8-08dd14ac04f0 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH3PEPF00000009.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB6684 Content-Type: text/plain; charset="utf-8" Hardware mailbox message receiving handler calls mmput to release the process mm. If the process has already exited, the mmput here may call mmu notifier handler, amdxdna_hmm_invalidate, which will cause a dead lock. Using mmput_async instead prevents this dead lock. Signed-off-by: Lizhi Hou --- drivers/accel/amdxdna/aie2_ctx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_= ctx.c index 90e8d87666a9..b5282555bbf2 100644 --- a/drivers/accel/amdxdna/aie2_ctx.c +++ b/drivers/accel/amdxdna/aie2_ctx.c @@ -179,7 +179,7 @@ aie2_sched_notify(struct amdxdna_sched_job *job) up(&job->hwctx->priv->job_sem); job->job_done =3D true; dma_fence_put(fence); - mmput(job->mm); + mmput_async(job->mm); aie2_job_put(job); } =20 --=20 2.34.1