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Subject2.4.20/2.4.21-pre3 usb Oops

I've got ide disk connected as usb-storage device.

Oops is reproductable (output from ksymoops below).
I had to copy it from screen (I hope effects are

How I reproduced it:
I loaded usb-storage (which loaded sd_mod), then sg,
made copy of /proc/ksyms then tried to fdisk /dev/sda.


I've got 2.4.20 with preempt, but effect is similar
while running 2.4.21-pre3. I'm quite sure I could use
it with 2.4.17/18.

While I was composing this message and tried to disconnect
mentioned device system froze.


Logs (not 'directly' oops related)
/etc/hotplug/usb.agent: Setup usb-storage for USB product 55aa/103/904
SCSI subsystem driver Revision: 1.00
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
usb-uhci.c: interrupt, status 3, frame# 245
usb_control/bulk_msg: timeout
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: Model: Rev:
Type: Direct-Access ANSI SCSI revision: 02
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
USB Mass Storage support registered.

<Output from ksymoops:>

ksymoops 2.4.8 on i686 2.4.20+p. Options used
-V (default)
-k ./ksyms (specified)
-l /proc/modules (default)
-o /lib/modules/2.4.20+p (specified)
-m /boot/ (specified)

Warning (compare_ksyms_lsmod): module input is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module snd-mixer-oss is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module snd-pcm-oss is in lsmod but not in ksyms, probably no symbols exported
Error (compare_ksyms_lsmod): module sg is in ksyms but not in lsmod
Oops: 0000d
CPU: 0 <EIP: 0010:[<c012e548>] Not tainted
EFLAGS: 00010002
eax: 01e27c98 ebx: 6f732e78 ecx: 00000000 edx: c100001c
esi: 00000000 edi: 00000206 ebp: 00000000 esp: c8a03e84
ds: 0018 es: 0018 ss: 0018
Process usb.agent (pid 1560 stackpage=c8a03000)
Stack: cfd54980 00000000 cff2ada0 00000000 c01b8b07 6f732e78 cff24800 00000000
cff2ada0 00000000 00000000 d081e159 00000001 cfd54980 c01b7eec cff24800
cff24800 00000000 d081eadf cff24800 c12e587c c12e5860 00000000 00000000
Call Trace: [<c01b8b07>] [<d081e159>] [<c01b7eec>] [<d081eadf>] [<d081ebca>] [<c010811d>] [<c0108311>] [<c0121274>] [<c0106d7b>]
Code: 2b 59 0c 89 d8 31 d2 f7 76 18 89 c3 8b 41 14 89 44 99 18 89
Using defaults from ksymoops -t elf32-i386 -a i386

>>edx; c100001c <_end+d371c4/10548208>
>>esp; c8a03e84 <_end+873b02c/10548208>

Trace; c01b8b07 <usb_destroy_configuration+163/1b4>
Trace; d081e159 <[usb-uhci]uhci_free_dev+2d/34>
Trace; c01b7eec <usb_free_dev+24/3c>
Trace; d081eadf <[usb-uhci]process_urb+243/254>
Trace; d081ebca <[usb-uhci]uhci_interrupt+da/154>
Trace; c010811d <handle_IRQ_event+31/5c>
Trace; c0108311 <do_IRQ+b9/118>
Trace; c0121274 <sys_rt_sigprocmask+1f0/234>
Trace; c0106d7b <system_call+33/38>

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 2b 59 0c sub 0xc(%ecx),%ebx
Code; 00000003 Before first symbol
3: 89 d8 mov %ebx,%eax
Code; 00000005 Before first symbol
5: 31 d2 xor %edx,%edx
Code; 00000007 Before first symbol
7: f7 76 18 divl 0x18(%esi)
Code; 0000000a Before first symbol
a: 89 c3 mov %eax,%ebx
Code; 0000000c Before first symbol
c: 8b 41 14 mov 0x14(%ecx),%eax
Code; 0000000f Before first symbol
f: 89 44 99 18 mov %eax,0x18(%ecx,%ebx,4)
Code; 00000013 Before first symbol
13: 89 00 mov %eax,(%eax)

<0> Kernel panic: Aiee, killing interrupt handler!

3 warnings and 1 error issued. Results may not be reliable.


Jacek Kawa
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