2.6.21-rc3 - oops on remove of USB dongle
From: John Stoffel
Date: Fri Mar 09 2007 - 11:15:36 EST
Hi all,
I've just compiled and installed 2.6.21-rc3 on my Dual CPU Dell
Precision 610MT system. Dual 550mhz Xeon, 768mb of RAM. Mix of SCSI,
ATA drives. I'm using the new ATA_ drivers for my PATA disks.
After booting, I pulled my seldom used USB->serial device from the
system to toss in my bag to bring to work. It's a Belkin F5U109
dongle. I noticed the following oops:
[ 473.891249] usb 3-2.1: USB disconnect, address 3
[ 473.892072] pl2303 ttyUSB0: pl2303 converter now disconnected from
ttyUSB0
[ 473.892141] pl2303 3-2.1:1.0: device disconnected
[ 482.749356] usb 3-2.2: USB disconnect, address 4
[ 482.749904] BUG: unable to handle kernel NULL pointer dereference
at virtual
address 00000010
[ 482.749919] printing eip:
[ 482.749926] c04010d4
[ 482.749932] *pde = 00000000
[ 482.749942] Oops: 0000 [#1]
[ 482.749947] SMP
[ 482.749956] Modules linked in: dm_snapshot dm_mirror snd_pcm_oss
snd_mixer_os
s snd_ens1371 snd_rawmidi snd_ac97_codec ac97_bus snd_pcm
snd_seq_dummy sr_mod s
nd_seq_oss cdrom snd_seq_midi_event snd_seq snd_timer snd_seq_device
ohci1394 mc
t_u232 pl2303 usbserial i2c_piix4 ieee1394 snd soundcore
snd_page_alloc i2c_core
ata_piix
[ 482.750034] CPU: 1
[ 482.750038] EIP: 0060:[<c04010d4>] Not tainted VLI
[ 482.750043] EFLAGS: 00010296 (2.6.21-rc3 #8)
[ 482.750073] EIP is at klist_del+0x14/0x50
[ 482.750083] eax: 00000000 ebx: 00000000 ecx: 00000001 edx:
ef94b818
[ 482.750097] esi: ef2d4084 edi: ef2d4098 ebp: ef94b818 esp:
eff93e48
[ 482.750108] ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068
[ 482.750121] Process khubd (pid: 126, ti=eff92000 task=efe5b570
task.ti=eff920
00)
[ 482.750130] Stack: ef2d4084 ef2d4084 00000000 c02b5db5 ef2d4084
ef282ea0 0000
0000 ef94b818
[ 482.750156] c02b5f68 00000001 f0851c78 eed7b924 ef282ea0
ef94b818 c031
4be0 ef282ed4
[ 482.750182] f0851bf0 ef282ea0 c0239a3b c0401130 ef2d4000
00000000 ef2d
4000 ef2d4000
[ 482.750208] Call Trace:
[ 482.750220] [<c02b5db5>] device_del+0x15/0x1c0
[ 482.750252] [<c02b5f68>] device_unregister+0x8/0x10
[ 482.750269] [<f0851c78>] destroy_serial+0x88/0x110 [usbserial]
[ 482.750319] [<c0314be0>] usb_kill_urb+0xc0/0xd0
[ 482.750353] [<f0851bf0>] destroy_serial+0x0/0x110 [usbserial]
[ 482.750377] [<c0239a3b>] kref_put+0x2b/0x80
[ 482.750392] [<c0401130>] klist_release+0x0/0x30
[ 482.750410] [<f0851a9b>] usb_serial_disconnect+0x5b/0xb0
[usbserial]
[ 482.750435] [<c04026ab>] mutex_lock+0xb/0x20
[ 482.750454] [<c0314e83>] usb_disable_interface+0x33/0x40
[ 482.750474] [<c0317588>] usb_unbind_interface+0x38/0x80
[ 482.750496] [<c02b8458>] __device_release_driver+0x68/0xa0
[ 482.750520] [<c02b8983>] device_release_driver+0x23/0x40
[ 482.750537] [<c02b7ddc>] bus_remove_device+0x5c/0x90
[ 482.750553] [<c02b5efb>] device_del+0x15b/0x1c0
[ 482.750570] [<c0314de8>] usb_disable_device+0x78/0xe0
[ 482.750588] [<c0311494>] usb_disconnect+0xa4/0x120
[ 482.750608] [<c0312167>] hub_thread+0x1e7/0xb50
[ 482.750635] [<c012ece0>] autoremove_wake_function+0x0/0x50
[ 482.750676] [<c0311f80>] hub_thread+0x0/0xb50
[ 482.750689] [<c012eb1b>] kthread+0xbb/0xf0
[ 482.750702] [<c012ea60>] kthread+0x0/0xf0
[ 482.750717] [<c01036c7>] kernel_thread_helper+0x7/0x10
[ 482.750740] =======================
[ 482.750746] Code: 24 00 00 00 00 c6 44 24 07 00 eb ac 8b 43 04 8b
30 eb 9b 8d
74 26 00 83 ec 0c 89 7c 24 08 89 c7 89 1c 24 89 74 24 04 8b 18 89 d8
<8b> 73 10
e8 14 23 00 00 89 f8 e8 2d ff ff ff 85 c0 b8 00 00 00
[ 482.750860] EIP: [<c04010d4>] klist_del+0x14/0x50 SS:ESP
0068:eff93e48
The system is still running just fine. When I get home, I can try
re-plugging it if you like, and seeing what happens.
John
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