[Pkg-spca5xx-devel] Bug#357626: kernel bug (oops) using vgrabbj on spca5xx

[Florian Lohoff]

Package: spca5xx-source
Version: 20060202-1

Hi,
when running spca5xx module on a PII IBM Netstation system with a Kernel
2.6.16-rc6 i am seeing this oops on the first invocation of vgrabbj
to capture a single image (vgrabbj -d /dev/video0 -f f.jpg)

The kernel line says:

    263                 if (tasklet_trylock(t)) {
    264                         if (!atomic_read(&t->count)) {
    265                                 if (!test_and_clear_bit(TASKLET_STATE_SCHED, &t->state))
    266                                         BUG();
    267                                 t->func(t->data);
    268                                 tasklet_unlock(t);
    269                                 continue;
    270                         }
    271                         tasklet_unlock(t);
    272                 }


------------[ cut here ]------------
kernel BUG at kernel/softirq.c:266!
invalid opcode: 0000 [#1]
Modules linked in: spca5xx videodev uhci_hcd usbcore
CPU:    0
EIP:    0060:[<c01195fc>]    Not tainted VLI
EFLAGS: 00010246   (2.6.16-rc6-netstation #1)
EIP is at tasklet_action+0x2c/0x60
eax: 00000000   ebx: c232c008   ecx: 00000028   edx: c232c008
esi: c03cb0a8   edi: 00000009   ebp: 00411007   esp: c0397f90
ds: 007b   es: 007b   ss: 0068
Process swapper (pid: 0, threadinfo=c0396000 task=c0342b00)
Stack: <0>00000001 c01193e3 c03cb0a8 00000046 00059100 c0390800 c0119416 c0396000
       c0104eaf c010379a c0396000 00000000 c0396000 00059100 c0390800 00411007
       00000000 0000007b 0000007b ffffff0b c0100ba3 00000060 00000246 c0100c3c
Call Trace:
 [<c01193e3>] __do_softirq+0x83/0x90
 [<c0119416>] do_softirq+0x26/0x30
 [<c0104eaf>] do_IRQ+0x1f/0x30
 [<c010379a>] common_interrupt+0x1a/0x20
 [<c0100ba3>] default_idle+0x33/0x60
 [<c0100c3c>] cpu_idle+0x4c/0x60
 [<c039871a>] start_kernel+0x16a/0x1a0
Code: fa 8b 1d 60 b0 3c c0 c7 05 60 b0 3c c0 00 00 00 00 fb 85 db 74 29 89 da 8b 1b 8b 42 08
85 c0 75 20 0f b3 42 04 19 c0 85 c0 75 08 <0f> 0b 0a 01 47 36 30 c0 8b 42 10 50 ff 52 0c 58 85 db 75 d7 5b
 <0>Kernel panic - not syncing: Fatal exception in interrupt


ant:~# cat /proc/bus/usb/devices
T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 2
B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 2.06
S:  Manufacturer=Linux 2.6.16-rc6-netstation uhci_hcd
S:  Product=UHCI Host Controller
S:  SerialNumber=0000:00:05.2
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms

T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0ac8 ProdID=301b Rev= 1.00
S:  Manufacturer=Z-Star Corp.
S:  Product=PC Camera
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=160mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
I:  If#= 0 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS= 128 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
I:  If#= 0 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS= 192 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
I:  If#= 0 Alt= 3 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS= 256 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
I:  If#= 0 Alt= 4 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS= 384 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
I:  If#= 0 Alt= 5 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS= 512 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
I:  If#= 0 Alt= 6 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS= 768 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
I:  If#= 0 Alt= 7 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
E:  Ad=81(I) Atr=01(Isoc) MxPS=1023 Ivl=1ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=10ms


Flo
-- 
Florian Lohoff                  flo at rfc822.org             +49-171-2280134
                        Heisenberg may have been here.
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