Hi

Following my previous post on System Freeze, this additional piece of
information extracted from SysRq might shed some light on the problem:

=============================
SysRq : Show Regs

Pid: 21294, comm:             mencoder
EIP: 0060:[<c0111d12>] CPU: 0
EIP is at delay_pmtmr+0x12/0x20
EFLAGS: 00000287    Not tainted  (2.6.14.2)
EAX: 0016eded EBX: 001b4447 ECX: 606bf5e7 EDX: 0000aa0e
ESI: ffffffff EDI: 0000000b EBP: 00000160 DS: 007b ES: 007b
CR0: 80050033 CR2: 00000160 CR3: 26190000 CR4: 000006d0
[<c01d58a9>] __delay+0x9/0x10
[<c011c225>] panic+0xd5/0xe0
[<c010396b>] die+0x13b/0x150
[<c0334ef0>] do_page_fault+0x0/0x5c0
[<c0334ef0>] do_page_fault+0x0/0x5c0
[<c0335281>] do_page_fault+0x391/0x5c0
[<c0334ef0>] do_page_fault+0x0/0x5c0
[<c0103283>] error_code+0x4f/0x54
[<f8a129e0>] auth_tout_cb+0x0/0x20 [zd1211]
[<f8a129ea>] auth_tout_cb+0xa/0x20 [zd1211]
[<c01252c8>] run_timer_softirq+0xc8/0x1b0
[<c0106e6c>] timer_interrupt+0x4c/0x60
[<c01211a2>] __do_softirq+0x42/0xa0
[<c0121227>] do_softirq+0x27/0x30
[<c01046ab>] do_IRQ+0x3b/0x70
[<c014f14c>] __handle_mm_fault+0x1bc/0x200
[<c0103226>] common_interrupt+0x1a/0x20
[<c0111d39>] get_offset_pmtmr+0x19/0x2e0
[<c0106a4a>] do_gettimeofday+0x1a/0xd0
[<c0120903>] sys_gettimeofday+0x13/0x60
[<c0102fff>] sysenter_past_esp+0x54/0x75
=============================

A page fault seemed to have occured at auth_tout_cb in zd1205.c. I
can't see anything harmful in that method. One strange observation is
the PID above, which comes from mencoder. mencoder is recording video
which uses the same IRQ as the zd1211 usb controller. Could mencoder
be trying to service zd1211's IRQ request? I am not very familiar with
IRQs, please forgive my stabbing in the dark.

we are using version 48 of the driver, but have also managed to crash
it using the latest 76.

Regards
Keith


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