hile it is in the process of releasing resources can lead to use-after-free and crashes. Fix this by stopping job scheduling before calling aie2_release_resource() and restarting it after the release completes. Additionally, aie2_sched_job_run() now checks whether the hardware context is still active. Fixes: 4fd6ca90fc7f ("accel/amdxdna: Refactor hardware context destroy routine") Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260130003255.2083255-1-lizhi.hou@amd.com Signed-off-by: Sasha Levin --- drivers/accel/amdxdna/aie2_ctx.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c index 42d876a427c59..2c36ed7e9639c 100644 --- a/drivers/accel/amdxdna/aie2_ctx.c +++ b/drivers/accel/amdxdna/aie2_ctx.c @@ -315,6 +315,9 @@ aie2_sched_job_run(struct drm_sched_job *sched_job) struct dma_fence *fence; int ret; + if (hwctx->status != HWCTX_STAT_READY) + return NULL; + if (!mmget_not_zero(job->mm)) return ERR_PTR(-ESRCH); @@ -693,7 +696,10 @@ void aie2_hwctx_fini(struct amdxdna_hwctx *hwctx) aie2_hwctx_wait_for_idle(hwctx); /* Request fw to destroy hwctx and cancel the rest pending requests */ + drm_sched_stop(&hwctx->priv->sched, NULL); aie2_release_resource(hwctx); + hwctx->status = HWCTX_STAT_STOP; + drm_sched_start(&hwctx->priv->sched, 0); mutex_unlock(&xdna->dev_lock); drm_sched_entity_destroy(&hwctx->priv->entity); -- 2.51.0[PATCH 6.19 294/781] accel/amdxdna: Stop job scheduling across aie2_release_resource()Greg Kroah-Hartman undefinedstable@vger.kernel.org undefined undefined undefined undefined undefinedŽh†˜n