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Subjectin-kernel pcmcia oopsing in SMP
On a few SMP boxes here, with kernels from about 2.4.14 though 2.4.17-pre2,
the system locks up hard during heavy wireless I/O.

Using in-kernel yenta_socket and orinoco drivers. Everything works 100%
with a UP kernel, or an SMP kernel with max_cpus=1, but with 2 cpus, the
system will lock up hard after just a few minutes of I/O.

(Some have said the kernel pcmcia stuff is still immature, but Hinds'
pcmcia-cs package doesn't work at all for me. It's ds.o keeps oopsing when
insmod'ed, so I can't even try it.)

With nmi_watchdog=2, I'm able to get an oops:

ksymoops 2.4.3 on i686 2.4.16-pre1-smp. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.16-pre1-smp/ (default)
-m /usr/src/linux/ (default)

Oops: 0000
EIP: 0010:[<c011ea18>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010202
eax: 00012800 ebx: 4c15ff51 ecx: c03052d4 edx: ffffffff
esi: 00100000 edi: 4c15ff51 ebp: c02dd060 esp: c179bf28
ds: 0018 es: 0018 ss: 0018
Process (pid: -2147450880, stackpage=c179b000)
Stack: c02dd460 00000001 fffffffe 00100000 c011e7df c02dd460 c02d9800 c02d9810
c02d9810 c179bf74 00000046 c0108efd c0105290 c179a000 c0105290 00000000
00100000 c028df48 80008000 00000000 c023a990 c0105290 c179a000 c179a000
Call Trace: [<c011e7df>] [<c0108efd>] [<c0105290>] [<c0105290>] [<c0105290>]
[<c0105290>] [<c01052bc>] [<c0105322>] [<c0119c28>]
Code: 8b 3f f0 0f ba 6b 04 01 19 c0 85 c0 75 44 8b 43 08 85 c0 75

>>EIP; c011ea18 <tasklet_hi_action+2c/a0> <=====
Trace; c011e7de <do_softirq+6e/cc>
Trace; c0108efc <do_IRQ+1b8/1c8>
Trace; c0105290 <default_idle+0/34>
Trace; c0105290 <default_idle+0/34>
Trace; c0105290 <default_idle+0/34>
Trace; c0105290 <default_idle+0/34>
Trace; c01052bc <default_idle+2c/34>
Trace; c0105322 <cpu_idle+3e/54>
Trace; c0119c28 <release_console_sem+148/150>
Code; c011ea18 <tasklet_hi_action+2c/a0>
00000000 <_EIP>:
Code; c011ea18 <tasklet_hi_action+2c/a0> <=====
0: 8b 3f mov (%edi),%edi <=====
Code; c011ea1a <tasklet_hi_action+2e/a0>
2: f0 0f ba 6b 04 01 lock btsl $0x1,0x4(%ebx)
Code; c011ea20 <tasklet_hi_action+34/a0>
8: 19 c0 sbb %eax,%eax
Code; c011ea22 <tasklet_hi_action+36/a0>
a: 85 c0 test %eax,%eax
Code; c011ea24 <tasklet_hi_action+38/a0>
c: 75 44 jne 52 <_EIP+0x52> c011ea6a <tasklet_hi_action+7e/a0>
Code; c011ea26 <tasklet_hi_action+3a/a0>
e: 8b 43 08 mov 0x8(%ebx),%eax
Code; c011ea28 <tasklet_hi_action+3c/a0>
11: 85 c0 test %eax,%eax
Code; c011ea2a <tasklet_hi_action+3e/a0>
13: 75 00 jne 15 <_EIP+0x15> c011ea2c <tasklet_hi_action+40/a0>

Ian Morgan
Ian E. Morgan Vice President & C.O.O. Webcon, Inc. PGP: #2DA40D07

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