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
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