Re: Panic in ieee80211 tx mgmt timeout

This is kinda strange; that symbol doesn't exist in the net80211 or ath source.

What the heck?



adrian



On 28 June 2011 17:28, Stefan Esser <st_esser_at_t-online.de> wrote:
> Hi,
>
> is this a known issue?
>
> My -CURRENT system (r223560M, amd64, 8GB, Atheros WLAN) panics after
> minutes to hours of uptime with the following message:
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 0
> fault virtual address   = 0xffffff807f502000
> fault code              = supervisor data read, page not present
> ...
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 11 (swi4: clock)
> [ thread pid 11 tid 1000012 ]
> Stopped at      ieee80211_tx_mgmt_timeout+0x1:  movq     (%rdi),%rdi
>
> db> bt
> Tracing pid 11 tid 100012 td 0xfffffe00032e0000
> ieee80211_tx_mgmt_timeout() at ieee80211_tx_mgmt_timeout+0x1
> intr_event_execute_handlers() at intr_event_execute_handlers+0x66
> ithread_loop() at ithread_loop+0x96
> fork_exit() at fork_exit+0x11d
> fork_trampoline() at fork_trampoline+0xe
> --- trap 0, rip = 0, rsp = 0xffffff8000288d00, rbp = 0 ---
>
> This panic message is manually transcribed, since the GPT-only
> partitioning prevents dumping of a kernel core. (Why, BTW?)
> I could add a swap partition on a MBR disk, if a core dump seems
> neccessary to diagnose the problem. I'm also willing to wait for that
> panic to occur again and to gather more debug output.
>
>
> Other information: The Atheros WLAN in this system is unused (not
> associated) but both ath0 and wlan0 were "UP" at the time of the panic.
>
> Initial testing shows the system to be stable with both wlan0 and ath0
> set to "down" after boot. But still, the timeout should not panic the
> kernel, if WLAN is active but not fully configured (e.g. no SSID).
>
> Any ideas?
>
> Best regards, STefan
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