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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1B096C28B2E for ; Tue, 11 Mar 2025 06:45:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7D11910E124; Tue, 11 Mar 2025 06:45:31 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Fd4BgX2M"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9A6DE10E124 for ; Tue, 11 Mar 2025 06:45:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1741675530; x=1773211530; h=from:to:cc:subject:message-id:date:mime-version: content-transfer-encoding; bh=wUx86Xs4QmwfkauzxHUVzTI+dcKFK5TmOSvB8z7y32c=; b=Fd4BgX2M5vIifdrsmUnM+1piS63ZaGxyDk9VU7hZpTw4f5XJ+9Ojx+dy 3lSrRbQwYkj4mo5w5A8Az9GPTG6gl5Ow/ze9/Q4ccwVjhbSDBFuegPBAq mIA6/0v6tlilC4oLQI5JNHUrs+kb53eUs/sFIr+z1tsfSZCw55FElvYFk yD2SDQhZrNMypv9QtjMLraPIpm7urAnydTXKFPz9lQ3rjlJgh6wy+hPT8 6gUtl6sDaLnWfdqwiDUmqejYxL7LZ9mVj26BeaqnXc012dbEAHOU8YktN x0hYJIDJ7eDv0cYCCJHFsNFg0K6OhjZXeaIved0qMJVocz9rc9mEMLzfL g==; X-CSE-ConnectionGUID: crjaYAkvRay8H/i82VHueg== X-CSE-MsgGUID: hu/bxM+uS+urRRDz22MZzw== X-IronPort-AV: E=McAfee;i="6700,10204,11369"; a="42883439" X-IronPort-AV: E=Sophos;i="6.14,238,1736841600"; d="scan'208";a="42883439" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2025 23:45:30 -0700 X-CSE-ConnectionGUID: zDAqQkwdRFaMnP+zKR7U9g== X-CSE-MsgGUID: HQwrlAh4QxmEEYn7FigIcA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,238,1736841600"; d="scan'208";a="125424464" Received: from ipu5-build.bj.intel.com (HELO [10.238.232.136]) ([10.238.232.136]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2025 23:45:29 -0700 From: Bingbu Cao To: link@vivo.com, vivek.kasireddy@intel.com Cc: linux-kernel@vger.kernel.org, christian.koenig@amd.com, dri-devel@lists.freedesktop.org Subject: udmabuf vmap failed (Revert "udmabuf: fix vmap_udmabuf error page set" can help) Message-ID: <9172a601-c360-0d5b-ba1b-33deba430455@linux.intel.com> Date: Tue, 11 Mar 2025 14:40:34 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Huan Yang and Vivek, I am trying to use udmabuf for my test, and I cannot vmap the udmabuf buffers now. vmap_pfn_apply() will report a warning to complain that the pfns are invalid. I dump the pfn numbers as below: [ 3365.399641] pg[0] pfn 1148695 [ 3365.399642] pg[1] pfn 1145057 [ 3365.399642] pg[2] pfn 1134070 [ 3365.399643] pg[3] pfn 1148700 [ 3365.399643] pg[4] pfn 1144871 [ 3365.399643] pg[5] pfn 1408686 [ 3365.399643] pg[6] pfn 1408683 ... [ 3365.399660] WARNING: CPU: 3 PID: 2772 at mm/vmalloc.c:3489 vmap_pfn_apply+0xb7/0xd0 [ 3365.399667] Modules linked in:... [ 3365.399750] CPU: 3 UID: 0 PID: 2772 Comm: drm-test Not tainted 6.13.0-rc2-rvp #845 [ 3365.399752] Hardware name: Intel Corporation Client Platform/xxxx, BIOS xxxFWI1.R00.3221.D83.2408120121 08/12/2024 [ 3365.399753] RIP: 0010:vmap_pfn_apply+0xb7/0xd0 [ 3365.399755] Code: 5b 41 5c 41 5d 5d c3 cc cc cc cc 48 21 c3 eb d1 48 21 c3 48 23 3d 31 c0 26 02 eb c5 48 c7 c7 c4 3c 20 a8 e8 5b c0 d8 ff eb 8a <0f> 0b b8 ea ff ff ff 5b 41 5c 41 5d 5d c3 cc cc cc cc 0f 1f 80 00 [ 3365.399756] RSP: 0018:ffffb9b50c32fad0 EFLAGS: 00010202 [ 3365.399757] RAX: 0000000000000001 RBX: 0000000000118717 RCX: 0000000000000000 [ 3365.399758] RDX: 0000000080000000 RSI: ffffb9b50c358000 RDI: 00000000ffffffff [ 3365.399758] RBP: ffffb9b50c32fae8 R08: ffffb9b50c32fbd0 R09: 0000000000000001 [ 3365.399759] R10: ffff941602479288 R11: 0000000000000000 R12: ffffb9b50c32fbd0 [ 3365.399759] R13: ffff941618665ac0 R14: ffffb9b50c358000 R15: ffff941618665ac8 [ 3365.399760] FS: 00007ff9e9ddd740(0000) GS:ffff94196f780000(0000) knlGS:0000000000000000 [ 3365.399760] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3365.399761] CR2: 000055fda5dc69d9 CR3: 00000001544de003 CR4: 0000000000f72ef0 [ 3365.399762] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 3365.399762] DR3: 0000000000000000 DR6: 00000000ffff07f0 DR7: 0000000000000400 [ 3365.399763] PKRU: 55555554 [ 3365.399763] Call Trace: [ 3365.399765] [ 3365.399769] ? show_regs+0x6d/0x80 [ 3365.399773] ? __warn+0x97/0x160 [ 3365.399777] ? vmap_pfn_apply+0xb7/0xd0 [ 3365.399777] ? report_bug+0x1ec/0x240 [ 3365.399782] ? handle_bug+0x63/0xa0 [ 3365.399784] ? exc_invalid_op+0x1d/0x80 [ 3365.399785] ? asm_exc_invalid_op+0x1f/0x30 [ 3365.399790] ? vmap_pfn_apply+0xb7/0xd0 [ 3365.399791] __apply_to_page_range+0x522/0x8a0 [ 3365.399794] ? __pfx_vmap_pfn_apply+0x10/0x10 [ 3365.399795] apply_to_page_range+0x18/0x20 [ 3365.399796] vmap_pfn+0x77/0xd0 [ 3365.399797] vmap_udmabuf+0xc5/0x110 [ 3365.399802] dma_buf_vmap+0x96/0x130 I did an experiment to revert 18d7de823b7150344d242c3677e65d68c5271b04, then I can vmap the pages. Could you help what's wrong with that? -- Best regards, Bingbu Cao