From: Wim Osterholt <wim@djo.tudelft.nl>
To: Oliver Neukum <oneukum@suse.com>
Cc: poma <pomidorabelisima@gmail.com>,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
Wim Osterholt <wim@djo.tudelft.nl>
Subject: Re: crash by cdc_acm driver in kernels 4.8-rc1/5
Date: Thu, 17 Nov 2016 17:11:34 +0100 [thread overview]
Message-ID: <20161117161134.GA14413@djo.tudelft.nl> (raw)
In-Reply-To: <20161117091434.GA6107@djo.tudelft.nl>
On Thu, Nov 17, 2016 at 10:14:34AM +0100, Wim Osterholt wrote:
> > For completeness I should also try with SMP unset. That is for tomorrow
> > then.
>
> With CONFIG_SMP unset nothing goes wrong here either.
> It looks like it has been fixed in 4.9-rc5, but I should also double check
> several conbinations on my (slower) laptop.
Nov 17 15:07:49 localhost kernel: usb 4-1: new full-speed USB device number 2 using uhci_hcd
Nov 17 15:07:49 localhost kernel: usb 4-1: New USB device found, idVendor=0572, idProduct=1340
Nov 17 15:07:49 localhost kernel: usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov 17 15:07:49 localhost kernel: usb 4-1: Product: USB Modem
Nov 17 15:07:49 localhost kernel: usb 4-1: Manufacturer: Conexant
Nov 17 15:07:49 localhost kernel: usb 4-1: SerialNumber: 12345678
Nov 17 15:07:50 localhost mtp-probe[12956]: checking bus 4, device 2: "/sys/devices/pci0000:00/0000:00:1d.2/usb4/4-1"
Nov 17 15:07:50 localhost mtp-probe[12956]: bus: 4, device: 2 was not an MTP device
Nov 17 15:07:51 localhost kernel: Check point 1
Nov 17 15:07:51 localhost kernel: Check point 2
Nov 17 15:07:51 localhost kernel: Check point 3
Nov 17 15:07:51 localhost kernel: Check point 4
Nov 17 15:07:51 localhost kernel: Check point 5
Nov 17 15:07:51 localhost kernel: Check point 6
Nov 17 15:07:51 localhost kernel: Check point 7
Nov 17 15:07:51 localhost kernel: Check point 8
Nov 17 15:07:51 localhost kernel: Check point 9
Nov 17 15:07:51 localhost kernel: Check point 10
Nov 17 15:07:51 localhost kernel: BUG: unable to handle kernel NULL pointer dereference at 00000249
Nov 17 15:07:51 localhost kernel: IP: [<e186ece2>] acm_probe+0x559/0xe53 [cdc_acm]
Nov 17 15:07:51 localhost kernel: *pde = 00000000
Nov 17 15:07:51 localhost kernel: Oops: 0000 [#1] SMP
...
You can get a few logs concatenated at
http://webserver.djo.tudelft.nl/insane488.logs
Usually the oops follows immediately after inserting the modem, but in one case
it took a few seconds extra before the oops. I think that is the one that
printed the full range of checkpoints.
On another 3 machines running 4.9-rc5 here everything went fine on insertion.
Switching back to 4.8.8 produced the bug with outputs similar to the above.
Now back to the laptops to see if I can get confirmation of having seen the
oops at 4.9-rc5 in some way. I'm not sure now.
Regards, Wim.
next prev parent reply other threads:[~2016-11-17 17:11 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-08 11:58 Wim Osterholt
2016-09-08 12:20 ` Oliver Neukum
2016-09-08 12:58 ` Wim Osterholt
2016-09-08 13:05 ` Oliver Neukum
2016-09-08 15:00 ` Wim Osterholt
2016-09-08 16:54 ` Wim Osterholt
2016-09-09 13:24 ` Wim Osterholt
2016-09-12 2:43 ` Wim Osterholt
2016-09-20 13:05 ` Oliver Neukum
2016-09-20 15:45 ` Wim Osterholt
2016-09-21 12:21 ` Oliver Neukum
2016-09-21 16:21 ` Wim Osterholt
2016-09-21 16:41 ` Wim Osterholt
2016-09-22 14:40 ` Oliver Neukum
2016-09-22 17:56 ` Wim Osterholt
2016-09-22 19:21 ` Wim Osterholt
2016-09-23 10:04 ` Wim Osterholt
2016-09-27 16:34 ` Wim Osterholt
2016-09-28 9:16 ` Oliver Neukum
2016-09-28 14:46 ` Wim Osterholt
2016-09-28 15:08 ` Wim Osterholt
2016-09-28 15:23 ` Oliver Neukum
2016-09-29 13:26 ` Wim Osterholt
2016-10-06 10:53 ` Oliver Neukum
2016-10-17 14:10 ` Oliver Neukum
2016-10-17 15:20 ` Wim Osterholt
2016-10-18 12:18 ` Oliver Neukum
2016-10-18 14:51 ` Wim Osterholt
2016-11-05 13:34 ` Wim Osterholt
2016-11-15 0:16 ` Wim Osterholt
2016-11-15 11:07 ` Oliver Neukum
2016-11-15 11:26 ` poma
2016-11-15 13:29 ` Wim Osterholt
2016-11-16 12:34 ` Oliver Neukum
2016-11-16 15:07 ` Wim Osterholt
2016-11-17 1:57 ` Wim Osterholt
2016-11-17 9:14 ` Wim Osterholt
2016-11-17 16:11 ` Wim Osterholt [this message]
2016-11-21 13:19 ` Oliver Neukum
2016-11-21 15:58 ` Wim Osterholt
2016-11-21 20:23 ` Wim Osterholt
2016-11-21 23:49 ` poma
2016-11-22 17:50 ` Bjørn Mork
2016-11-23 0:48 ` Wim Osterholt
2016-11-22 15:38 ` Wim Osterholt
2016-11-22 18:08 ` Bjørn Mork
2016-11-23 0:54 ` Wim Osterholt
2016-11-23 7:37 ` Bjørn Mork
2016-11-23 15:02 ` Alan Stern
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