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 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 0599CC88E7F for ; Tue, 15 Sep 2026 14:57:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Message-ID:Subject:Cc:To:From:Date: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=254R1arFeoToj39V4xt3wD6Cd/e86zUvnv4vHFoNiO8=; b=gU7mt9h69/b2wyEKSXynQ6M9Hb 2sDcGmuaZC4/cZkWDhKH/c09v0GfSd3pFMgdf9zY+dA7FRuqBRQBhvv0B2kLNkhTtk7cmqVwAJAKz luRvp0SK9S4Kf+5BEWJebelJ+1GrO16Otb3tPxztVVCSXw/fUweuSkncGf4la1I0GKwxnvIAs7Qa8 2kt/Iw6wjTj9w+AbLFbfIqozbvBT6jVXCUrANRsJ3ZbO5B8mTbvtB+GhaZFqyLwzzHX5v6ZJex64g vlbGrq+lXVkWLk9hU0fyH12ncLLhBG9hqSUIR0RXg3suq8yorg3T2V4Of0Kjf0pxpNtvQBXhcFaK8 /NyM2cdA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6Ub9-000000072dH-2SAV; Tue, 15 Sep 2026 14:57:27 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6Ub3-000000072ac-32Ur; Tue, 15 Sep 2026 14:57:25 +0000 Date: Tue, 15 Sep 2026 16:57:18 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1789484239; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=254R1arFeoToj39V4xt3wD6Cd/e86zUvnv4vHFoNiO8=; b=CMxRiALKRyq1V0anX/6ckGE1/BYVlY9fL1HrNqPxF+rhX83P1p/qFKV4bWiUlU9UTMePxr HzlLa9dzLTZcH25PTP5dqzuDisqVgjoTO/HivOoWmBbN/i+78iVHckmaa3Zg/MNXIrYKxM TDTopVi1FbxNwr7k3Z1/KmX/58vPQC5SLzDhW1V3Q53a5Z176YzBvHkmZE9oH5tuM8RoPu 2re8k0NPE8tC3mOO/wVwfwx+0RcS2aX0OkNunxeVH9EIp/kAb/ZHlU/I1GyqZh3NmysbTg vsw0bDc6EkpveHAS/raUcFqg6Ww2kHMnqGKir0+stdZKgWh/NNrgm4lCqPNSaw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1789484239; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=254R1arFeoToj39V4xt3wD6Cd/e86zUvnv4vHFoNiO8=; b=HWvLdMTcF+Vhh5bpLeoxnfSNe/H03Ev2y7ULP+pZoyAwB/q2HdfOaRc3o3cfsSOIIJg3e4 RkAgiAkQLZ7EddAg== From: Sebastian Andrzej Siewior To: linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Matthias Brugger , AngeloGioacchino Del Regno , Nicolas Dufresne , Johan Hovold , Guangshuo Li Subject: [BUG] mtk-mdp3: Crash during probe in mtk-mdp3 Message-ID: <20260915145718.5D7Dsuwc@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260915_075721_909798_E86261CB X-CRM114-Status: UNSURE ( 6.05 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Hi, On next-20260914 I saw: | mtk-mdp3 14001000.dma-controller: deferred probe timeout, ignoring depend= ency | Unable to handle kernel NULL pointer dereference at virtual address 00000= 00000000019 | Mem abort info: | ESR =3D 0x0000000096000004 | EC =3D 0x25: DABT (current EL), IL =3D 32 bits | SET =3D 0, FnV =3D 0 | EA =3D 0, S1PTW =3D 0 | FSC =3D 0x04: level 0 translation fault | Data abort info: | ISV =3D 0, ISS =3D 0x00000004, ISS2 =3D 0x00000000 | CM =3D 0, WnR =3D 0, TnD =3D 0, TagAccess =3D 0 | GCS =3D 0, Overlay =3D 0, DirtyBit =3D 0 | user pgtable: 4k pages, 48-bit VAs, pgdp=3D0000000110d36000 | [0000000000000019] pgd=3D0000000000000000, p4d=3D0000000000000000 | Internal error: Oops: 0000000096000004 [#1] SMP | dwmac-mediatek 11021000.ethernet end0: renamed from eth0 | Modules linked in: mtk_vcodec_dec_hw =E2=80=A6 | CPU: 6 UID: 0 PID: 90 Comm: kworker/u32:1 Tainted: G W 7= =2E3.0-rc3-next-20260914 #1 PREEMPT_{RT,(full)} | Tainted: [W]=3DWARN | Hardware name: MediaTek Genio 1200 EVK-P1V2-EMMC (DT) | Workqueue: events_unbound deferred_probe_work_func | pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=3D--) | pc : mtk_mutex_get+0xc/0x44 [mtk_mutex] | lr : mdp_probe+0x150/0x438 [mtk_mdp3] | sp : ffff8000837ebb30 | x29: ffff8000837ebb30 x28: 0000000000000000 x27: 0000000000000000 | x26: 000000000000000c x25: 000000000000000d x24: ffff0000c0de3410 | x23: 0000000000000000 x22: ffff0000c0de3400 x21: 0000000000000000 | x20: ffff0000d1e56800 x19: ffff0000d1e56800 x18: ffff8000826bfd18 | x17: 3030303030303431 x16: 3a6d726f6674616c x15: 0000000000000058 | x14: ffffffffffffffff x13: 0000000000000028 x12: 0101010101010101 | x11: 7f7f7f7f7f7f7f7f x10: fefeff776473746c x9 : 0000000000000008 | x8 : ffff0000c0864500 x7 : 0000000000000000 x6 : 0000000000000020 | x5 : 0000000000000020 x4 : 0000000000000040 x3 : 0000000000000000 | x2 : ffff80007b37d040 x1 : 0000000000000000 x0 : 0000000000000019 | Call trace: | mtk_mutex_get+0xc/0x44 [mtk_mutex] (P) | platform_probe+0x5c/0xa4 | really_probe+0xbc/0x2c0 | __driver_probe_device+0x11c/0x184 | driver_probe_device+0x3c/0x114 | __device_attach_driver+0xb8/0x11c | bus_for_each_drv+0x88/0xe8 | __device_attach+0xa0/0x190 | device_initial_probe+0x50/0x54 | bus_probe_device+0x38/0xac | deferred_probe_work_func+0x90/0xc8 | process_one_work+0x188/0x4f8 | worker_thread+0x18c/0x308 | kthread+0x130/0x140 | ret_from_fork+0x10/0x20 | Code: ???????? f9403c03 52800001 91006460 (39400002) | ---[ end trace 0000000000000000 ]--- That report ist from https://dashboard.kernelci.org/test/maestro%3A6aa88a0d20239ade9037b72f https://files.kernelci.org/rt-tests-cyclictest-6aa88a0d20239ade9037b72f/lo= g.txt.gz This is also visible on 7.3.0-rc3: https://files.kernelci.org/rt-tests-cyclictest-6aa84e3720239ade90364e29/lo= g.txt.gz Could someone please take a look, I don't have the hardware myself. Sebastian