I am getting kernel panics on one of my boxes from the b43legacy driver due to a
"Fatal exception in interrupt".
This particular one happened 50K seconds after bootup, but it has happened
nearly as soon as the network connection was completed. The hand-transcribed
traceback is as follows:
__nefif_schedule+0x13/0xa0
ieee80211_propagate_queue_wake+0x166/0x1c0
__ieee80211_wake_queue+0x13b/0x2d0
? __ieee80211_wake_queue++0xc0/0x2d0
ieee80211_wake_queue_by_reason+0x45/0x70
ieee80211_wake_queue+0xb/0x10
b43legacy_dma_handle_txstatus+0x3f9/0x4b0
? _raw_spin_unlock+0x26/0x40
b43legacy_handle_txstatus+0x64/0x90
b43legacy_handle_hwtxstatus+0x66/0x70
b43legacy_dma_rx+0x354/0x610
The offsets are for an x86_64 architecture.
These crashes never happen when I use a USB device running the rtl8187 driver,
thus it appears to arise in b43legacy. Any suggestions on what might cause the
problem would be helpful. Sorry I don't have the register dumps, etc.
The code dump at the point of the crash is as follows:
ec 10 4c 89 65 f8 48 89 5d f0 49 89 fc <3c> 0f ba af 80 00 00 00 00
Larry
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