From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-media@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Cc: Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Nicolas Dufresne <nicolas.dufresne@collabora.com>,
Johan Hovold <johan@kernel.org>,
Guangshuo Li <lgs201920130244@gmail.com>
Subject: [BUG] mtk-mdp3: Crash during probe in mtk-mdp3
Date: Tue, 15 Sep 2026 16:57:18 +0200 [thread overview]
Message-ID: <20260915145718.5D7Dsuwc@linutronix.de> (raw)
Hi,
On next-20260914 I saw:
| mtk-mdp3 14001000.dma-controller: deferred probe timeout, ignoring dependency
| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000019
| Mem abort info:
| ESR = 0x0000000096000004
| EC = 0x25: DABT (current EL), IL = 32 bits
| SET = 0, FnV = 0
| EA = 0, S1PTW = 0
| FSC = 0x04: level 0 translation fault
| Data abort info:
| ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
| CM = 0, WnR = 0, TnD = 0, TagAccess = 0
| GCS = 0, Overlay = 0, DirtyBit = 0
| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000110d36000
| [0000000000000019] pgd=0000000000000000, p4d=0000000000000000
| Internal error: Oops: 0000000096000004 [#1] SMP
| dwmac-mediatek 11021000.ethernet end0: renamed from eth0
| Modules linked in: mtk_vcodec_dec_hw …
| CPU: 6 UID: 0 PID: 90 Comm: kworker/u32:1 Tainted: G W 7.3.0-rc3-next-20260914 #1 PREEMPT_{RT,(full)}
| Tainted: [W]=WARN
| 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=--)
| 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/log.txt.gz
This is also visible on 7.3.0-rc3:
https://files.kernelci.org/rt-tests-cyclictest-6aa84e3720239ade90364e29/log.txt.gz
Could someone please take a look, I don't have the hardware myself.
Sebastian
reply other threads:[~2026-09-15 14:57 UTC|newest]
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