My laptop with ndis driver for BCM4313 NIC crashes periodically during the heavy traffic with this kernel stack:
KDB: stack backtrace:
#0 0xffffffff809906f0 at kdb_backtrace+0x60
#1 0xffffffff80953436 at vpanic+0x126
#2 0xffffffff80953303 at panic+0x43
#3 0xffffffff80d5bedb at trap_fatal+0x36b
#4 0xffffffff80d5c1dd at trap_pfault+0x2ed
#5 0xffffffff80d5b85a at trap+0x47a
#6 0xffffffff80d4192c at calltrap+0x8
#7 0xffffffff82098a1d at ndis_start+0x49d
#8 0xfffff8000438f0ce at dmapbase+0x438f0ce
#9 0xffffffff82083aa9 at x86_64_call2+0x9
#10 0xffffffff8091c5fa at fork_exit+0x9a
#11 0xffffffff80d41e6e at fork_trampoline+0xe

Crashes happen when wifi connection is established, and wpa_supplicant from ports is running with a single network in wpa_supplicant.conf. I am not sure why ndis_start is called. It is possible that wpa_supplicant decides to bring the interface down and up for some reason.

FreeBSD 10.3

Yuri
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