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Message-ID: <CAEyMn7YqrRttqvJzJLA+yVo6WtBZww6QcXT12MMCi+bhjP4pTg@mail.gmail.com>
Date: Sun, 19 Sep 2021 08:58:13 +0200
From: Heiko Thiery <heiko.thiery@...il.com>
To: Fabio Estevam <festevam@...il.com>,
Peter Chen <peter.chen@....com>, Jun Li <jun.li@....com>,
Yu Kuai <yukuai3@...wei.com>,
Sascha Hauer <s.hauer@...gutronix.de>,
Mark Brown <broonie@...nel.org>, linux-usb@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Shawn Guo <shawnguo@...nel.org>,
Frieder Schrempf <frieder.schrempf@...tron.de>
Subject: imx8mm board crash in drivers/usb/chipidea/ci_hdrc_imx.c
Hi all,
I see the following crash on a imx8mm board implementation. I cannot
find a reason for this at the moment. This can be reproduced with the
imx8mm-kontron-n801x-s dtb.Has anyone seen the same issue?
The position in the code is here:
https://elixir.bootlin.com/linux/latest/source/drivers/usb/chipidea/usbmisc_imx.c#L819
[ 1.489344] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000098
[ 1.498170] Mem abort info:
[ 1.500966] ESR = 0x96000044
[ 1.504030] EC = 0x25: DABT (current EL), IL = 32 bits
[ 1.509356] SET = 0, FnV = 0
[ 1.512416] EA = 0, S1PTW = 0
[ 1.515569] FSC = 0x04: level 0 translation fault
[ 1.520458] Data abort info:
[ 1.523349] ISV = 0, ISS = 0x00000044
[ 1.527196] CM = 0, WnR = 1
[ 1.530176] [0000000000000098] user address but active_mm is swapper
[ 1.536544] Internal error: Oops: 96000044 [#1] PREEMPT SMP
[ 1.542125] Modules linked in:
[ 1.545190] CPU: 3 PID: 7 Comm: kworker/u8:0 Not tainted 5.14.0-dirty #3
[ 1.551901] Hardware name: Kontron i.MX8MM N801X S (DT)
[ 1.557133] Workqueue: events_unbound deferred_probe_work_func
[ 1.562984] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)
[ 1.568998] pc : imx7d_charger_detection+0x3f0/0x510
[ 1.573973] lr : imx7d_charger_detection+0x22c/0x510
[ 1.578947] sp : ffff800011f1b5d0
[ 1.582266] x29: ffff800011f1b5d0 x28: 0000000000000000 x27: 0000000000000000
[ 1.589416] x26: ffff000000294c10 x25: ffff800011a6d678 x24: ffff000002ff3680
[ 1.596567] x23: ffff000002ff3688 x22: ffff000002ff3680 x21: 0000000000000000
[ 1.603715] x20: 0000000000000000 x19: ffff000003118a80 x18: 0000000000000001
[ 1.610867] x17: 000000040044ffff x16: 00400032b5503510 x15: 0000000000000000
[ 1.618019] x14: ffff0000000d44c0 x13: ffff80002e7ed000 x12: 0000000034d4d91d
[ 1.625172] x11: 0000000000000000 x10: 0000000000000960 x9 : ffff800011f1b460
[ 1.632321] x8 : ffff00003fdb1d40 x7 : ffff00003fdb7f00 x6 : 0000000004ce61f4
[ 1.639475] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
[ 1.646625] x2 : 11246917acc78900 x1 : 0000000000000000 x0 : 0000000000000001
[ 1.653779] Call trace:
[ 1.656230] imx7d_charger_detection+0x3f0/0x510
[ 1.660854] imx_usbmisc_charger_detection+0x40/0xc8
[ 1.665825] ci_hdrc_imx_notify_event+0xec/0x120
[ 1.670455] ci_udc_vbus_session+0x70/0xa0
[ 1.674560] usb_gadget_vbus_connect+0x20/0x38
[ 1.679013] ci_handle_vbus_change+0x64/0x70
[ 1.683290] ci_hdrc_probe+0x4e0/0x838
[ 1.687047] platform_probe+0x68/0xd8
[ 1.690717] really_probe+0xb0/0x318
[ 1.694300] __driver_probe_device+0x78/0xe0
[ 1.698576] driver_probe_device+0xb0/0x110
[ 1.702767] __device_attach_driver+0x90/0xe0
[ 1.707131] bus_for_each_drv+0x7c/0xd0
[ 1.710974] __device_attach+0xe8/0x148
[ 1.714816] device_initial_probe+0x14/0x20
[ 1.719009] bus_probe_device+0x9c/0xa8
[ 1.722852] device_add+0x3f0/0x840
[ 1.726349] platform_device_add+0x110/0x238
[ 1.730626] ci_hdrc_add_device+0x538/0x5a8
[ 1.734818] ci_hdrc_imx_probe+0x3fc/0x810
[ 1.738927] platform_probe+0x68/0xd8
[ 1.742598] really_probe+0xb0/0x318
[ 1.746178] __driver_probe_device+0x78/0xe0
[ 1.750458] driver_probe_device+0xb0/0x110
[ 1.754651] __device_attach_driver+0x90/0xe0
[ 1.759013] bus_for_each_drv+0x7c/0xd0
[ 1.762858] __device_attach+0xe8/0x148
[ 1.766703] device_initial_probe+0x14/0x20
[ 1.770896] bus_probe_device+0x9c/0xa8
[ 1.774739] deferred_probe_work_func+0x88/0xc0
[ 1.779278] process_one_work+0x1e8/0x360
[ 1.783295] worker_thread+0x210/0x480
[ 1.787049] kthread+0x150/0x160
[ 1.790284] ret_from_fork+0x10/0x18
[ 1.793873] Code: a8c47bfd d50323bf d65f03c0 52800020 (b9009aa0)
[ 1.799975] ---[ end trace d43a19cb0f4746b6 ]---
If anyone has a hint that would be great.
--
Heiko
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