Re: crash by cdc_acm driver in kernels 4.8-rc1/5

[Wim Osterholt]

On Thu, Sep 08, 2016 at 02:20:38PM +0200, Oliver Neukum wrote:
> > 
> > The oops tells things that I didn't all write down, but it says
> > null pointer dereference at 00000246
> 
> That is the important part. I am sorry, but without the oops
> nobody can help you. Please capture it

Sep  6 19:12:37 localhost kernel: usb 7-1: new full-speed USB device number 2 using uhci_hcd
Sep  6 19:12:37 localhost kernel: usb 7-1: New USB device found, idVendor=0572, idProduct=1340
Sep  6 19:12:37 localhost kernel: usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Sep  6 19:12:37 localhost kernel: usb 7-1: Product: USB Modem
Sep  6 19:12:37 localhost kernel: usb 7-1: Manufacturer: Conexant
Sep  6 19:12:37 localhost kernel: usb 7-1: SerialNumber: 12345678
Sep  6 19:12:38 localhost mtp-probe[13126]: checking bus 7, device 2: "/sys/devices/pci0000:00/0000:00:1d.3/usb7/7-1"
Sep  6 19:12:38 localhost mtp-probe[13126]: bus: 7, device: 2 was not an MTP device
Sep  6 19:12:38 localhost kernel: BUG: unable to handle kernel NULL pointer dereference at 00000246
Sep  6 19:12:38 localhost kernel: IP: [<e0a81a35>] 0xe0a81a35
Sep  6 19:12:38 localhost kernel: *pde = 00000000 
Sep  6 19:12:38 localhost kernel: Oops: 0000 [#1] SMP
Sep  6 19:12:38 localhost kernel: Modules linked in: cdc_acm(+) nouveau video drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm agpgart i2c_algo_bit lirc_serial(C) lirc_dev(O) cfg80211 rfkill binfmt_misc svgalib_helper(O) snd_pcm_oss snd_mixer_oss fbcon bitblit softcursor font tileblit sr9700 dm9601 usbnet usb_storage mii snd_hda_codec_generic tg3 snd_hda_intel snd_hda_codec ptp snd_hwdep pps_core gpio_ich snd_hda_core libphy ppdev firmware_class uhci_hcd pcspkr snd_pcm ohci_pci ohci_hcd lpc_ich ehci_pci snd_timer ehci_hcd mfd_core snd usbcore floppy soundcore wmi parport_pc usb_common parport acpi_cpufreq processor button
Sep  6 19:12:38 localhost kernel: CPU: 0 PID: 13127 Comm: udevd Tainted: G         C O    4.8.0-rc5 #1
Sep  6 19:12:38 localhost kernel: Hardware name: Hewlett-Packard HP xw4300 Workstation/0A00h, BIOS 786D3 v01.08 03/10/2006
Sep  6 19:12:38 localhost kernel: task: df639c00 task.stack: df4d6000
Sep  6 19:12:38 localhost kernel: EIP: 0060:[<e0a81a35>] EFLAGS: 00010202 CPU: 0
Sep  6 19:12:38 localhost kernel: EAX: 00000000 EBX: def22000 ECX: 00000000 EDX: 00000124
Sep  6 19:12:38 localhost kernel: ESI: def2227c EDI: dee04000 EBP: 00000246 ESP: df4d7ce8
Sep  6 19:12:38 localhost kernel:  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Sep  6 19:12:38 localhost kernel: CR0: 80050033 CR2: 00000246 CR3: 19b4d000 CR4: 00000690
Sep  6 19:12:38 localhost kernel: Stack:
Sep  6 19:12:38 localhost kernel:  dee8ba00 dee8ba00 dee8b400 dee04000 df4b6380 df4b63b8 00000001 dee04070
Sep  6 19:12:38 localhost kernel:  daca2ec0 dee8ba1c 00000040 00000010 00000000 def2200c def2227c 00000000
Sep  6 19:12:38 localhost kernel:  dee20800 00000000 df639c00 dcdc37e0 c01f4347 00000246 00000246 dcdc37e0
Sep  6 19:12:38 localhost kernel: Call Trace:
Sep  6 19:12:38 localhost kernel:  [<c01f4347>] ? 0xc01f4347
Sep  6 19:12:38 localhost kernel:  [<c04357ca>] ? 0xc04357ca
Sep  6 19:12:38 localhost kernel:  [<e0ac422f>] ? 0xe0ac422f
Sep  6 19:12:38 localhost kernel:  [<c030276f>] ? 0xc030276f
Sep  6 19:12:38 localhost kernel:  [<c03028ce>] ? 0xc03028ce
Sep  6 19:12:38 localhost kernel:  [<c030140b>] ? 0xc030140b
Sep  6 19:12:38 localhost kernel:  [<c030238a>] ? 0xc030238a
Sep  6 19:12:38 localhost kernel:  [<c0302879>] ? 0xc0302879
Sep  6 19:12:38 localhost kernel:  [<c030205e>] ? 0xc030205e
Sep  6 19:12:38 localhost kernel:  [<c0302e85>] ? 0xc0302e85
Sep  6 19:12:38 localhost kernel:  [<e0ac3525>] ? 0xe0ac3525
Sep  6 19:12:38 localhost kernel:  [<e08620a9>] ? 0xe08620a9
Sep  6 19:12:38 localhost kernel:  [<e0862000>] ? 0xe0862000
Sep  6 19:12:38 localhost kernel:  [<c01003eb>] ? 0xc01003eb
Sep  6 19:12:38 localhost kernel:  [<c04357ca>] ? 0xc04357ca
Sep  6 19:12:38 localhost kernel:  [<c027c45c>] ? 0xc027c45c
Sep  6 19:12:38 localhost kernel:  [<c01ae14a>] ? 0xc01ae14a
Sep  6 19:12:38 localhost kernel:  [<c0183bf5>] ? 0xc0183bf5
Sep  6 19:12:38 localhost kernel:  [<c0183c24>] ? 0xc0183c24
Sep  6 19:12:38 localhost kernel:  [<c0174deb>] ? 0xc0174deb
Sep  6 19:12:38 localhost kernel:  [<c0175043>] ? 0xc0175043
Sep  6 19:12:38 localhost kernel:  [<c0100ed1>] ? 0xc0100ed1
Sep  6 19:12:38 localhost kernel:  [<c0436e65>] ? 0xc0436e65
Sep  6 19:12:38 localhost kernel: Code: 44 24 04 ba 20 2c a8 e0 89 58 74 83 c0 1c 89 44 24 24 e8 0f de 87 df 85 c0 0f 88 ed fe ff ff 8b 6c 24 54 85 ed 0f 84 91 00 00 00 <0f> b6 45 00 ba c0 00 40 02 83 e8 04 e8 eb c5 72 df 85 c0 89 83
Sep  6 19:12:38 localhost kernel: EIP: [<e0a81a35>]  SS:ESP 0068:df4d7ce8
Sep  6 19:12:38 localhost kernel: CR2: 0000000000000246
Sep  6 19:12:38 localhost kernel: ---[ end trace 64919c4014c0aa1d ]---
Sep  6 19:12:38 localhost kernel: udevd[919]: worker [13127] terminated by signal 9 (Killed)
Sep  6 19:12:38 localhost kernel: udevd[919]: worker [13127] failed while handling '/devices/pci0000:00/0000:00:1d.3/usb7/7-1/7-1:1.1'
Sep  6 19:12:38 localhost kernel: clocksource: timekeeping watchdog on CPU1: Marking clocksource 'tsc' as unstable because the skew is too large:
Sep  6 19:12:38 localhost kernel: clocksource:                       'refined-jiffies' wd_now: 11d65e0 wd_last: 11d6560 mask: ffffffff
Sep  6 19:12:38 localhost kernel: clocksource:                       'tsc' cs_now: dad6eef733f0 cs_last: dad67427eed0 mask: ffffffffffffffff
Sep  6 19:12:38 localhost kernel: clocksource: Switched to clocksource refined-jiffies
Sep  6 19:13:38 localhost kernel: udevd[919]: worker [13125] /devices/pci0000:00/0000:00:1d.3/usb7/7-1/7-1:1.0 is taking a long time
Sep  6 19:15:38 localhost kernel: udevd[919]: worker [13125] /devices/pci0000:00/0000:00:1d.3/usb7/7-1/7-1:1.0 timeout; kill it
Sep  6 19:15:38 localhost kernel: udevd[919]: seq 1356 '/devices/pci0000:00/0000:00:1d.3/usb7/7-1/7-1:1.0' killed
Sep  6 19:15:38 localhost kernel: udevd[919]: worker [13125] terminated by signal 9 (Killed)
Sep  6 19:15:38 localhost kernel: udevd[919]: worker [13125] failed while handling '/devices/pci0000:00/0000:00:1d.3/usb7/7-1/7-1:1.0'
Sep  6 19:15:44 localhost shutdown[13136]: shutting down for system reboot


Regards, Wim.