I'm on a Slackware with kernel 2.6.17.3 obtained by applying patch-2.6.17.3
to kernel 2.6.17.
I plugged a Pinnacle pctv 50e USB tv card.
It works correctly, I was trying it.
After a while, I disconnected it and after very few seconds
I plugged an external USB hard drive.
For a couple of minutes, USB hub seemed to be not working.
No messages on dmesg indicating a new device (usually /dev/sda,
I have all the modules for that.)
After about two minutes, the USB hub woke up (/dev/sda created, USB
mouse working)
and on syslog and on every terminal on my
desktop appeared some messages.
TERMINAL MESSAGES:
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: Oops: 0002 [#1]
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: PREEMPT
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: CPU: 0
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: EIP is at __fput+0xab/0x140
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: eax: 00000007 ebx: d613c000 ecx: d61cc030 edx: c01ebbf7
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: esi: d3ba2780 edi: d9548184 ebp: d94ede14 esp: d613df6c
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: ds: 007b es: 007b ss: 0068
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: Process firefox-bin (pid: 5500, threadinfo=d613c000
task=d61cc030)
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: Stack: df7c4f40 d3ba2780 df68c5c0 00000000 d613c000
c0147fda d3ba2780 df68c5c0
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: d3ba2780 df68c5c0 d613c000 df68c5c0 d3ba2780
c014803c d3ba2780 df68c5c0
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: 00000030 00000002 09557fb0 c01025d7 00000030
00000000 b68c7600 00000002
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: Call Trace:
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: <c0147fda> filp_close+0x4c/0x55 <c014803c> sys_close+0x59/0x7c
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: <c01025d7> syscall_call+0x7/0xb
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: Code: 38 58 5a 8b 87 f4 00 00 00 85 c0 74 07 50 e8 6a
6e 00 00 58 8b 46 10 85 c0
74 35 8b 00 85 c0 74 2f bb 00 e0 ff ff 21 e3 ff 43 14 <ff> 88 00 01
00 00 83 38 02 75 0b 8b 80
88 01 00 00 e8 08 67 fc
Message from syslogd@slacky at Wed Jul 5 23:38:39 2006 ...
slacky kernel: EIP: [<c01493c9>] __fput+0xab/0x140 SS:ESP 0068:d613df6c
SYSLOG MESSAGES:
Jul 5 23:38:39 slacky kernel: BUG: unable to handle kernel NULL
pointer dereference at virtual
address 00000107
Jul 5 23:38:39 slacky kernel: printing eip:
Jul 5 23:38:39 slacky kernel: c01493c9
Jul 5 23:38:39 slacky kernel: *pde = 00000000
Jul 5 23:38:39 slacky kernel: Oops: 0002 [#1]
Jul 5 23:38:39 slacky kernel: PREEMPT
Jul 5 23:38:39 slacky kernel: Modules linked in: vfat fat snd_pcm_oss
snd_mixer_oss snd_usb_au
dio snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep tda9887 tuner
saa7115 em28xx compat_ioctl3
2 v4l1_compat v4l2_common ir_common videodev tveeprom i2c_core eth1394
snd_intel8x0 snd_intel8x
0m snd_ac97_codec snd_ac97_bus snd_pcm snd_timer snd snd_page_alloc
yenta_socket rsrc_nonstatic
pcmcia_core ohci1394 b44 joydev fuse evdev
Jul 5 23:38:39 slacky kernel: CPU: 0
Jul 5 23:38:39 slacky kernel: EIP: 0060:[<c01493c9>] Not tainted VLI
Jul 5 23:38:39 slacky kernel: EFLAGS: 00010202 (2.6.17.3 #7)
Jul 5 23:38:39 slacky kernel: EIP is at __fput+0xab/0x140
Jul 5 23:38:39 slacky kernel: eax: 00000007 ebx: d613c000 ecx:
d61cc030 edx: c01ebbf7
Jul 5 23:38:39 slacky kernel: esi: d3ba2780 edi: d9548184 ebp:
d94ede14 esp: d613df6c
Jul 5 23:38:39 slacky kernel: ds: 007b es: 007b ss: 0068
Jul 5 23:38:39 slacky kernel: Process firefox-bin (pid: 5500,
threadinfo=d613c000 task=d61cc03
0)
Jul 5 23:38:39 slacky kernel: Stack: df7c4f40 d3ba2780 df68c5c0
00000000 d613c000 c0147fda d3b
a2780 df68c5c0
Jul 5 23:38:39 slacky kernel: d3ba2780 df68c5c0 d613c000
df68c5c0 d3ba2780 c014803c d3b
a2780 df68c5c0
Jul 5 23:38:39 slacky kernel: 00000030 00000002 09557fb0
c01025d7 00000030 00000000 b68
c7600 00000002
Jul 5 23:38:39 slacky kernel: Call Trace:
Jul 5 23:38:39 slacky kernel: <c0147fda> filp_close+0x4c/0x55
<c014803c> sys_close+0x59/0x7c
Jul 5 23:38:39 slacky kernel: <c01025d7> syscall_call+0x7/0xb
Jul 5 23:38:39 slacky kernel: Code: 38 58 5a 8b 87 f4 00 00 00 85 c0
74 07 50 e8 6a 6e 00 00 5
8 8b 46 10 85 c0 74 35 8b 00 85 c0 74 2f bb 00 e0 ff ff 21 e3 ff 43 14
<ff> 88 00 01 00 00 83 3
8 02 75 0b 8b 80 88 01 00 00 e8 08 67 fc
Jul 5 23:38:39 slacky kernel: EIP: [<c01493c9>] __fput+0xab/0x140
SS:ESP 0068:d613df6c
Jul 5 23:38:39 slacky kernel: <6>note: firefox-bin[5500] exited with
preempt_count 1
Jul 5 23:38:39 slacky kernel: hub 1-0:1.0: over-current change on port 2
Jul 5 23:38:39 slacky kernel: hub 2-0:1.0: over-current change on port 1
Jul 5 23:38:39 slacky kernel: hub 2-0:1.0: over-current change on port 2
Jul 5 23:38:40 slacky kernel: hub 1-0:1.0: over-current change on port 1
Jul 5 23:40:37 slacky kernel: hub 1-0:1.0: over-current change on port 1
Jul 5 23:40:37 slacky kernel: hub 2-0:1.0: over-current change on port 1
Jul 5 23:40:44 slacky kernel: sda: assuming drive cache: write through
Jul 5 23:40:44 slacky kernel: sda: assuming drive cache: write through
Hope it helps.
Bye.
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