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Bug#744994: linux-image-3.13-1-amd64: segfault on use of external (usb) dvdrw



Control: tag -1 moreinfo

On Thu, 2014-04-17 at 09:46 +0100, root wrote:
> Package: src:linux
> Version: 3.13.7-1
> Severity: important
> 
> 
> 
> -- Package-specific info:
> ** Version:
> Linux version 3.13-1-amd64 (debian-kernel@lists.debian.org) (gcc version 4.8.2 (Debian 4.8.2-16) ) #1 SMP Debian 3.13.7-1 (2014-03-25)
> 
> ** Command line:
> BOOT_IMAGE=/vmlinuz-3.13-1-amd64 root=/dev/mapper/pc-root ro
> 
> ** Tainted: PWO (4609)
>  * Proprietary module has been loaded.
>  * Taint on warning.
>  * Out-of-tree module has been loaded.
> 
> ** Kernel log:
> Apr 17 09:42:12 teenymac kernel: [1202533.365163] sr0: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray
> Apr 17 09:42:12 teenymac kernel: [1202533.365187] cdrom: Uniform CD-ROM driver Revision: 3.20
> Apr 17 09:42:12 teenymac kernel: [1202533.365355] ------------[ cut here ]------------
> Apr 17 09:42:12 teenymac kernel: [1202533.365363] WARNING: CPU: 0 PID: 14387 at /build/linux-oxWk_8/linux-3.13.7/block/blk-core.c:457 blk_queue_bypass_end+0x54/0x60()

I see a WARNING here but not the segfault.  Was there actually a
segfault in addition to this?

> Apr 17 09:42:12 teenymac kernel: [1202533.365364] Modules linked in: sr_mod(+) cdrom nls_cp437 vfat fat nls_utf8 isofs usb_storage b43 ctr ccm snd_seq_dummy adm1021 nouveau mxm_wmi wmi ttm drm_kms_helper drm i2c_algo_bit snd_hrtimer ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables parport_pc ppdev lp parport 8021q garp stp mrp cpufreq_stats speedstep_lib binfmt_misc cpufreq_userspace cpufreq_powersave cpufreq_conservative uinput nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc appletalk ipx p8023 p8022 psnap llc rose netrom ax25 tun firewire_sbp2 loop fuse arc4 snd_usb_audio bcma mac80211 snd_usbmidi_lib snd_hda_codec_realtek snd_seq_midi cfg80211 uvcvideo snd_seq_midi_event videobuf2_vmalloc videobuf2_memops ftdi_sio iTCO_wdt iTCO_vendor_support snd_hda_intel rfkill snd_hda_codec joydev videobuf2_core snd_rawmidi snd_hwdep applesmc usbserial snd_pcm hid_appleir hid_generic evdev input_polldev lpc_ich mfd_core i2c_i801 videodev media snd_page_alloc i2c_core usbhid hid
> Apr 17 09:42:12 teenymac kernel: coretemp acpi_cpufreq rng_core processor snd_seq snd_seq_device snd_timer apple_bl snd kvm_intel kvm video thermal_sys soundcore button ext4 crc16 mbcache jbd2 dm_mod sd_mod crc_t10dif crct10dif_common ata_generic firewire_ohci ata_piix firewire_core crc_itu_t ehci_pci uhci_hcd ehci_hcd ssb mmc_core pcmcia pcmcia_core libata scsi_mod usbcore usb_common [last unloaded: cdrom]
[...]

I notice you unloaded the cdrom module previously.  Did you remove and
reinsert any other modules?  Did you remove and reattach the drive?

Ben.

-- 
Ben Hutchings
If God had intended Man to program,
we'd have been born with serial I/O ports.

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