https://bugzilla.novell.com/show_bug.cgi?id=856659
https://bugzilla.novell.com/show_bug.cgi?id=856659#c13
--- Comment #13 from Robert Milasan 2014-04-16 16:27:16 UTC ---
I can reproduce this:
robert@viper:~> sudo modprobe parport_pc
robert@viper:~> dmesg
[15229.165780] parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
[15229.287670] parport0: irq 7 detected
[15229.467099] ppdev: user-space parallel port driver
robert@viper:~> lsmod |grep parport
parport_pc 37278 0
parport 46395 2 ppdev,parport_pc
robert@viper:~> sudo rmmod parport_pc
robert@viper:~> dmesg
[15229.165780] parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
[15229.287670] parport0: irq 7 detected
[15229.467099] ppdev: user-space parallel port driver
[15255.456398] ------------[ cut here ]------------
[15255.456405] WARNING: CPU: 6 PID: 9435 at
/home/abuild/rpmbuild/BUILD/kernel-desktop-3.14.1/linux-3.14/fs/sysfs/group.c:216
device_del+0x3b/0x1b0()
[15255.456407] sysfs group ffffffff81c7f600 not found for kobject 'parport0'
[15255.456408] Modules linked in: ppdev parport_pc(-) parport vboxpci(O)
vboxnetadp(O) vboxnetflt(O) vboxdrv(O) fuse af_packet x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul
crc32c_intel ghash_clmulni_intel aesni_intel ablk_helper cryptd
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec
snd_hwdep e1000e ptp snd_pcm usb_storage iTCO_wdt iTCO_vendor_support lrw
snd_seq snd_timer snd_seq_device dcdbas gf128mul sr_mod snd soundcore pps_core
shpchp lpc_ich mfd_core mei_me mei glue_helper serio_raw i2c_i801 tpm_tis cdrom
aes_x86_64 sg button tpm video dm_mod radeon ttm drm_kms_helper drm
i2c_algo_bit processor scsi_dh_emc scsi_dh_rdac scsi_dh_alua scsi_dh_hp_sw
scsi_dh [last unloaded: ppdev]
[15255.456445] CPU: 6 PID: 9435 Comm: rmmod Tainted: G W O
3.14.1-1.geafcebd-desktop #1
[15255.456446] Hardware name: Dell Inc. OptiPlex 990/06D7TR, BIOS A10
11/24/2011
[15255.456448] 0000000000000009 ffffffff815d9502 ffff8800bb053de8
ffffffff81055972
[15255.456451] ffff880220917000 ffff8800bb053e38 ffff880221406540
ffff88020cc39c10
[15255.456453] 00007fff77b64d50 ffffffff810559d7 ffffffff818143a0
0000000000000028
[15255.456456] Call Trace:
[15255.456466] [<ffffffff81004c70>] dump_trace+0x80/0x2f0
[15255.456469] [<ffffffff81004f85>] show_stack_log_lvl+0xa5/0x190
[15255.456472] [<ffffffff8100626c>] show_stack+0x1c/0x50
[15255.456477] [<ffffffff815d9502>] dump_stack+0x49/0x6a
[15255.456482] [<ffffffff81055972>] warn_slowpath_common+0x72/0x90
[15255.456485] [<ffffffff810559d7>] warn_slowpath_fmt+0x47/0x50
[15255.456488] [<ffffffff813ea51b>] device_del+0x3b/0x1b0
[15255.456491] [<ffffffff813ea6a5>] device_unregister+0x15/0x60
[15255.456494] [<ffffffff813ea755>] device_destroy+0x35/0x40
[15255.456499] [<ffffffffa031e536>] parport_remove_port+0x36/0x180 [parport]
[15255.456508] [<ffffffffa008aba0>] parport_pc_unregister_port+0x20/0x190
[parport_pc]
[15255.456514] [<ffffffffa008dfdb>] parport_pc_exit+0x71/0x96 [parport_pc]
[15255.456520] [<ffffffff810cd22c>] SyS_delete_module+0x16c/0x220
[15255.456525] [<ffffffff815e6e3d>] system_call_fastpath+0x1a/0x1f
[15255.456529] [<00007f5ca22eee27>] 0x7f5ca22eee26
[15255.456531] ---[ end trace 6f7638030317d229 ]---
Hope this helps.
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