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Subject: Re: urtwn and hostap
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From: Matthew Grooms <mgrooms@shrew.net>
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On 9/16/2015 1:54 AM, Andriy Voskoboinyk wrote:
>> ieee80211_free_node() at ieee80211_free_node()_0x38/frame 
>> 0xfffffe0092fe8780
>> ieee80211_node_vdetach() at ieee80211_node_vdetach()+0x2d/frame 
>> 0xfffffe0092fe87a0
>> ieee80211_vap_detach() at ieee80211_vap_detach()+0x35e/frame 
>> 0xfffffe0092fe87d0
>> urtwn_vap_delete() at urtwn_vap_delete()+0xe/frame 0xfffffe0092fe87f0
>> if_clone_destroyif() at if_clone_destroyif()+0x1aa/frame 
>> 0xfffffe0092fe8840
>> if_clone_destroy() at if_clone_destroy()0x8e/frame 0xfffffe0092fe8860
>> kern_ioctl() at kern_ioctl()+0x230/frame 0xfffffe0092fe88c0
>> sys_ioctl() at sys_ioctl()+0x153/frame 0xfffffe0092fe89a0
>> amd64_syscall() at amd64_syscall()+0x282/frame 0xfffffe0092fe8ab0
>> Xfast_syscall() at Xfast_syscall()+0xfb/frame 0xfffffe0092fe8ab0
>> -- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8011e8c8a, rsp = 
>> 0x7fffffffe2f8, rbp = 0x7fffffffe310 --
>> db>
>>
>> -Matthew
>
> I'm suspecting that ieee80211_tx_complete() eats one extra reference 
> to the
> vap->iv_bss - try to add ieee80211_node_incref(vap->iv_bss);
> before urtwn_tx_start() (this is not a proper solution, but should work
> for now).

Ahh, that makes sense. I'll look at that tonight. Thanks for the suggestion!

-Matthew