Crash During Operation

[Dave Kroetsch]

Hi there...

Running the latest code out of the wireless-testing git, we're having 
very intermittent crashes of the wifi driver.  This is a 8385 CF module, 
running on an ARM core.

Anyone got any suggestions of what to look at?  Nothing else interesting 
in the logs.  Has anyone else seen this before?

Thanks,
	Dave

Jan 1 04:37:25 scout user.info kernel: [16642.000000] NETDEV WATCHDOG: 
eth1: transmit timed out
Jan 1 04:37:25 scout user.err kernel: [16642.000000] libertas: tx watch 
dog timeout
Jan 1 04:37:25 scout user.alert kernel: [16642.000000] Unable to handle 
kernel NULL pointer dereference at virtual address 00000000
Jan 1 04:37:25 scout user.alert kernel: [16642.000000] pgd = c0004000
Jan 1 04:37:25 scout user.alert kernel: [16642.000000] [00000000] 
*pgd=00000000
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Internal error: 
Oops: 817 [#1] PREEMPT
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Modules linked in: 
n920t_net(F) n920t_dma libertas_cs pcmcia firmware_class mx31ads_pcmcia 
pcmcia_core libertas
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] CPU: 0 Tainted: GF 
(2.6.22.6 #635)
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] PC is at 
if_cs_host_to_card+0x58/0x178 [libertas_cs]
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] LR is at 
lbs_thread+0x464/0x5a8 [libertas]
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] pc : [<bf037628>] 
lr : [<bf001d44>] psr: 60000193
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] sp : c2013f70 ip : 
c2013f98 fp : c2013f94
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] r10: 00000000 r9 : 
00000000 r8 : 00000001
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] r7 : c27c05b0 r6 : 
00000000 r5 : 0000024a r4 : c2f86f00
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] r3 : 00000404 r2 : 
00000125 r1 : c27c05b0 r0 : c27c03a0
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Flags: nZCv IRQs 
off FIQs on Mode SVC_32 Segment kernel
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Control: 00e5387f 
Table: 82a34000 DAC: 00000017
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Process lbs_main 
(pid: 1652, stack limit = 0xc2012258)
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Stack: (0xc2013f70 
to 0xc2014000)
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] 3f60: c27c03a4 
c27c03a0 00000000 c2012000
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] 3f80: 00000001 
00001d54 c2013fd4 c2013f98 bf001d44 bf0375dc 00000000 c2c58580
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] 3fa0: c004013c 
00100100 00200200 00000004 c2012000 c27c0000 bf0018e0 00000000
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] 3fc0: 00000000 
00000000 c2013ff4 c2013fd8 c005941c bf0018ec 00000000 00000000
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] 3fe0: 00000000 
00000000 00000000 c2013ff8 c0046f00 c00593cc 00000000 00000000
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Backtrace:
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] [<bf0375d0>] 
(if_cs_host_to_card+0x0/0x178 [libertas_cs]) from [<bf001d44>] 
(lbs_thread+0x464/0x5a8 [libertas])
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] r8:00001d54 
r7:00000001 r6:c2012000 r5:00000000 r4:c27c03a0
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] [<bf0018e0>] 
(lbs_thread+0x0/0x5a8 [libertas]) from [<c005941c>] (kthread+0x5c/0x94)
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] [<c00593c0>] 
(kthread+0x0/0x94) from [<c0046f00>] (do_exit+0x0/0x8e8)
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] r6:00000000 
r5:00000000 r4:00000000
Jan 1 04:37:25 scout user.warn kernel: [16642.000000] Code: e5943008 
e1a020a5 e1d332b0 e3130001 (05866000)
Jan 1 04:37:25 scout user.info kernel: [16642.190000] note: 
lbs_main[1652] exited with preempt_count 1