From patchwork Wed May 25 09:07:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?TWFyay1QSyBUc2FpICjolKHmspvliZsp?= X-Patchwork-Id: 12860867 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 7E350C433F5 for ; Wed, 25 May 2022 09:08:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Uo0boRi4L+l7OyjPPsuSDEZ3tCs/0mq36fXHDqfzgMI=; b=xABDB7Oy+4+Ghr 2w2ARpbwGU5BFlxb2Psy1Gd71Se5srkqwwJhCUbL6xAzUeABCl+B4itSzO2DMHop9Y92rawT0LWx9 AQDSHKQPkLlPOpPo0ivbtppKmxy8TdhFRoOBF+k4Vy4wqG5w7nKl+k0TDbosL/onFfTCHcmFpLijb CzTmcpZo4wvs3ji0CmLbSce7j1VhHSRBDodbwHyL9VzMIfeQLk1yfXED5HWgTB5MPKkcgA4TkYxlS 7/A2jJtI/C3ELkGV2SmGxJidvoo1VNbWzrz3NbIj2tqr+5HDNCEmWO+LCmEaOkfe708EWFmAkT65W HkIPDaDOgIj7phcfX/3Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ntmz3-00AWmz-QI; Wed, 25 May 2022 09:07:13 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ntmz0-00AWlR-JK; Wed, 25 May 2022 09:07:12 +0000 X-UUID: 194f08a8b2394ee3bf84f13da67278aa-20220525 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5, REQID:ec6adb20-b8b8-4ccc-a3e2-c4112037d61a, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:2a19b09, CLOUDID:1a126a47-4fb1-496b-8f1d-39e733fed1ea, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:0,BEC:nil X-UUID: 194f08a8b2394ee3bf84f13da67278aa-20220525 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1902089527; Wed, 25 May 2022 02:07:07 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 25 May 2022 02:07:06 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Wed, 25 May 2022 17:07:04 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Wed, 25 May 2022 17:07:04 +0800 From: Mark-PK Tsai To: CC: , , , , , , , , , Subject: [PATCH 5.10 0/2] media: vim2m: Fix potential NULL pointer dereference Date: Wed, 25 May 2022 17:07:00 +0800 Message-ID: <20220525090702.29035-1-mark-pk.tsai@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220525_020710_676655_D63292A9 X-CRM114-Status: UNSURE ( 7.56 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Apply upstream solution [1][2] to fix below kernel panic: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000208 ... pc : _raw_spin_lock_irqsave+0x50/0x90 lr : v4l2_m2m_cancel_job+0x38/0x1c4 [v4l2_mem2mem] sp : ffffffc012d2bcb0 x29: ffffffc012d2bcb0 x28: ffffff8098d6bb00 x27: 0000000000000000 x26: ffffffc01009b5c8 x25: 00000000000e001f x24: ffffff808ff3eb50 x23: ffffffc01009f5a0 x22: 0000000000000000 x21: ffffff808ffef000 x20: 0000000000000208 x19: 0000000000000000 x18: ffffffc012b51048 x17: ffffffc011e0ef7c x16: 00000000000000c0 x15: ffffffc010fc78f4 x14: ffffffc0119dd790 x13: 0000000000001b26 x12: 0000000053555555 x11: 0000000000000002 x10: 0000000000000001 x9 : 0000000000000000 x8 : 0000000000000208 x7 : 2020202020202020 x6 : ffffffc011e313a6 x5 : 0000000000000000 x4 : 0000000000000008 x3 : 000000000000002e x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000208 Call trace: _raw_spin_lock_irqsave+0x50/0x90 v4l2_m2m_cancel_job+0x38/0x1c4 [v4l2_mem2mem] v4l2_m2m_ctx_release+0x38/0x60 [v4l2_mem2mem] vim2m_release+0x5c/0xe0 [vim2m] v4l2_release+0x90/0x18c __fput+0xdc/0x2cc ____fput+0x10/0x1c task_work_run+0xc4/0x130 do_notify_resume+0xdc/0x158 work_pending+0x8/0x10 [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cf7f34777a5b4100a3a44ff95f3d949c62892bdd [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1a28dce222a6ece725689ad58c0cf4a1b48894f4 Hans Verkuil (1): media: vim2m: initialize the media device earlier Sakari Ailus (1): media: vim2m: Register video device after setting up internals drivers/media/test-drivers/vim2m.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-)