With an Atheros 5416 card from Adrian Chadd in my PowerBook G4, I get a Data Storage Interrupt after a few minutes. It's pretty reproducible:
* load if_ath/if_ath_pci
* ifconfig wlan0 create wlandev ath0
* ifconfig wlan0 up
* ifconfig wlan0 bgscan (fails with "Operation not supported")
* ifconfig wlan0 list scan
... wait ...
* ifconfig wland0 list scan (another just for good measure)
... wait ...
After a few minutes it kernel panics.
I've attached the dcons ddb session output. Quick synopsis: It
crashes in memcpy() crossing a page boundary. Backtrace:
fatal kernel trap:
exception = 0x300 (data storage interrupt)
virtual address = 0xd1b72000
srr0 = 0x5d44b4
srr1 = 0x9032
lr = 0xd1ab0fa4
curthread = 0x189fbc0
pid = 0, comm = ath0 net80211 taskq
Tracing pid 0 tid 100075 td 0x189fbc0
0xe21139f4: at m_pkthdr_init+0x5c
0xe2113a14: at ieee80211_send_probereq+0x14c
0xe2113a74: at ieee80211_probe_curchan+0x11c
0xe2113aa4: at scan_curchan+0x7c
0xe2113ac4: at scan_task+0x29c
0xe2113b14: at taskqueue_run_locked+0xd4
0xe2113b44: at taskqueue_thread_loop+0x6c
0xe2113b64: at fork_exit+0x88
0xe2113b84: at fork_trampoline+0xc
The m_pkthdr_init in the backtrace is misleading, I think.
I can provide any more data that's needed.
- Justin
dcons.athpanic
Description: Binary data
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