From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73868C433F5 for ; Mon, 10 Oct 2022 00:15:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231893AbiJJAPI (ORCPT ); Sun, 9 Oct 2022 20:15:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57192 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231487AbiJJANY (ORCPT ); Sun, 9 Oct 2022 20:13:24 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B23C580BB; Sun, 9 Oct 2022 16:51:08 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CC62460D3F; Sun, 9 Oct 2022 23:51:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B239C433C1; Sun, 9 Oct 2022 23:51:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1665359467; bh=Syyww4aE/A9q2YbgecUDjN7WhpYEeXohYESQpJiSY+w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y3tlTlt4I8OFepj2T5UZ35Lqa6etCm/3lQCzcoaQrMfbiCWp5WcXnSvgGRIqG9o4T A0HbUiF3eG3+8tEDjMu1I16J4C0LrUDZdLC+yoPZB5zAt8KUfOA3E7smFvuxSO6IPS j4rhVMWQ1/npM/8l6+cBsG5BknsFW+JNDhcoQrRM1FjUkinBtFIUhP3TbsFx9kYlLM upQEfjxGrBuLGtW6aVZ0qRRtHVZKie98+r/adZWBxFzTanPjdmBFyEZBBAZosg5z3u BWZ7AnGj7gIspkDA5nYnP33t8o0GFAP6LpAxL8z7rmv9t8r2QB1IdVv5XqN7d2jndZ w0AOqHz1tW2+Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Philip Yang , Felix Kuehling , =?UTF-8?q?Christian=20K=C3=B6nig?= , Alex Deucher , Sasha Levin , Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.0 29/44] drm/amdgpu: SDMA update use unlocked iterator Date: Sun, 9 Oct 2022 19:49:17 -0400 Message-Id: <20221009234932.1230196-29-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221009234932.1230196-1-sashal@kernel.org> References: <20221009234932.1230196-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Philip Yang [ Upstream commit 3913f0179ba366f7d7d160c506ce00de1602bbc4 ] SDMA update page table may be called from unlocked context, this generate below warning. Use unlocked iterator to handle this case. WARNING: CPU: 0 PID: 1475 at drivers/dma-buf/dma-resv.c:483 dma_resv_iter_next Call Trace: dma_resv_iter_first+0x43/0xa0 amdgpu_vm_sdma_update+0x69/0x2d0 [amdgpu] amdgpu_vm_ptes_update+0x29c/0x870 [amdgpu] amdgpu_vm_update_range+0x2f6/0x6c0 [amdgpu] svm_range_unmap_from_gpus+0x115/0x300 [amdgpu] svm_range_cpu_invalidate_pagetables+0x510/0x5e0 [amdgpu] __mmu_notifier_invalidate_range_start+0x1d3/0x230 unmap_vmas+0x140/0x150 unmap_region+0xa8/0x110 Signed-off-by: Philip Yang Suggested-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c index 1fd3cbca20a2..718db7d98e5a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c @@ -211,12 +211,15 @@ static int amdgpu_vm_sdma_update(struct amdgpu_vm_update_params *p, int r; /* Wait for PD/PT moves to be completed */ - dma_resv_for_each_fence(&cursor, bo->tbo.base.resv, - DMA_RESV_USAGE_KERNEL, fence) { + dma_resv_iter_begin(&cursor, bo->tbo.base.resv, DMA_RESV_USAGE_KERNEL); + dma_resv_for_each_fence_unlocked(&cursor, fence) { r = amdgpu_sync_fence(&p->job->sync, fence); - if (r) + if (r) { + dma_resv_iter_end(&cursor); return r; + } } + dma_resv_iter_end(&cursor); do { ndw = p->num_dw_left; -- 2.35.1