ath0_node_lock ath0_com_lock lor

[Adrian Chadd]

Hm, that's odd. Who wants to go digging to figure out which code paths
are causing this? :)

I'm knee deep in ANI at the moment. :)



Adrian


On 26 September 2012 12:49, Kim Culhan <w8hdkim at gmail.com> wrote:
> Have not seen an lor in some time, this noted today fyi
>
> lock order reversal:
>  1st 0xffffff80009267f0 ath0_node_lock (ath0_node_lock) @
> /usr/src/sys/net80211/ieee80211_ioctl.c:1341
>  2nd 0xffffff8000925018 ath0_com_lock (ath0_com_lock) @
> /usr/src/sys/net80211/ieee80211_node.c:2619
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b
> kdb_backtrace() at kdb_backtrace+0x39
> witness_checkorder() at witness_checkorder+0xc37
> _mtx_lock_flags() at _mtx_lock_flags+0x83
> ieee80211_node_leave() at ieee80211_node_leave+0x97
> setmlme_common() at setmlme_common+0x3f7
> ieee80211_ioctl_setmlme() at ieee80211_ioctl_setmlme+0x87
> ieee80211_ioctl_set80211() at ieee80211_ioctl_set80211+0x5a5
> in_control() at in_control+0x216
> ifioctl() at ifioctl+0x1020
> kern_ioctl() at kern_ioctl+0x1b0
> sys_ioctl() at sys_ioctl+0x11f
> amd64_syscall() at amd64_syscall+0x25a
> Xfast_syscall() at Xfast_syscall+0xfb
> --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x801203b8a, rsp =
> 0x7fffffffd9b8, rbp = 0x7fffffffda20 ---
>
>
> --
> thanks
> -kim