Hi

We are still experiencing page faults, and are struggling to
understand the stack traces. Below shows a stack trace where both
[zd1211] and [bttv] drivers being serviced at the same time, how is
this happening? Can someone help us please, or at least tell us the
right place to submit this problem?

mencoder S 00018C00 5680 31138 31134
31135 (NOTLB)
f4bd5ba0 00000000 0001ef00 00018c00 f899d4b3 00000160
00000001 c0f88250
c0f881e0 c0f88180 00000000 00000000 42b6e000 003d7cc6
f718d560 f718d688
c784a1c0 f4bd4000 f4bd4000 00000001 f8964978 00000000
00000160 00000000
Call Trace:
[<f899d4b3>] bttv_risc_planar+0x53/0x350 [bttv]
[<f8964978>] videobuf_waiton+0xb8/0x150 [video_buf]
[<c0118ba0>] default_wake_function+0x0/0x10
[<f8964a64>] videobuf_iolock+0x54/0x110 [video_buf]
[<c0118ba0>] default_wake_function+0x0/0x10
[<f89946ce>] bttv_prepare_buffer+0x10e/0x1b0 [bttv]
[<f8996c0b>] bttv_do_ioctl+0x111b/0x1630 [bttv]
[<c0333ff9>] _spin_lock_irqsave+0x9/0x10
[<f8a1ad71>] SendPkt+0x141/0x1c0 [zd1211]
[<f8a165aa>] zd_SendPkt+0x10a/0x210 [zd1211]
[<f8a0cd48>] zd1205_xmit_frame+0x98/0x490 [zd1211]
[<c0252068>] dma_pool_alloc+0x98/0x170
[<c02cea51>] dev_queue_xmit+0x291/0x310
[<c02ece90>] ip_output+0x120/0x2e0
[<c0106a4a>] do_gettimeofday+0x1a/0xd0
[<c02ce4bd>] __net_timestamp+0xd/0x20
[<f8c6202b>] tcp_in_window+0x30b/0x510 [ip_conntrack]
[<c01181bf>] activate_task+0x5f/0x80
[<c01182a8>] try_to_wake_up+0x88/0xd0
[<c0118be7>] __wake_up_common+0x37/0x70
[<c0118c58>] __wake_up+0x38/0x50
[<c0333ff9>] _spin_lock_irqsave+0x9/0x10
[<c0124b20>] lock_timer_base+0x20/0x50
[<c0124bec>] __mod_timer+0x9c/0xd0
[<f8a19bab>] TxCompleted+0xeb/0x120 [zd1211]
[<f89743ec>] video_usercopy+0xec/0x160 [videodev]
[<c02975d5>] urb_unlink+0x35/0x60
[<c0118c58>] __wake_up+0x38/0x50
[<c0118c58>] __wake_up+0x38/0x50
[<f8997120>] bttv_ioctl+0x0/0x70 [bttv]
[<f8997152>] bttv_ioctl+0x32/0x70 [bttv]
[<f8995af0>] bttv_do_ioctl+0x0/0x1630 [bttv]
[<c0171450>] do_ioctl+0x50/0x80
[<c01715be>] vfs_ioctl+0x5e/0x1c0
[<c013d62f>] __do_IRQ+0xaf/0xf0
[<c0171797>] sys_ioctl+0x77/0x90
[<c0102fff>] sysenter_past_esp+0x54/0x75


Pid: 0, comm: swapper
EIP: 0060:[<c0111d14>] CPU: 0
EIP is at delay_pmtmr+0x14/0x20
EFLAGS: 00000287 Not tainted (2.6.14.2)
EAX: a8b46c9a EBX: 001b4440 ECX: a8a27df1 EDX: 0000f3fe
ESI: ffffffff EDI: 0000000b EBP: 00000802 DS: 007b ES: 007b
CR0: 8005003b CR2: 00000802 CR3: 37206000 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
[<c011007b>] centrino_target+0x7b/0x180
[<f8998a27>] bttv_irq+0x157/0x3a0 [bttv]
[<c0118c58>] __wake_up+0x38/0x50
[<c013d542>] handle_IRQ_event+0x32/0x70
[<c013d601>] __do_IRQ+0x81/0xf0
[<c01046a6>] do_IRQ+0x36/0x70
[<c0103226>] common_interrupt+0x1a/0x20
[<c0103915>] die+0xe5/0x150
[<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
[<f8998a27>] bttv_irq+0x157/0x3a0 [bttv]
[<c0118c58>] __wake_up+0x38/0x50
[<c013d542>] handle_IRQ_event+0x32/0x70
[<c013d601>] __do_IRQ+0x81/0xf0
[<c01046a6>] do_IRQ+0x36/0x70
[<c0103226>] common_interrupt+0x1a/0x20
[<c020f803>] acpi_processor_idle+0x0/0x27f
[<c020f904>] acpi_processor_idle+0x101/0x27f
[<c01010e2>] cpu_idle+0x42/0x60
[<c03ea7e5>] start_kernel+0x175/0x1c0
[<c03ea330>] unknown_bootoption+0x0/0x1e0

Regards
Keith


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