LOR iwn0_com_lock iwn0

From: Brandon Gooch <jamesbrandongooch_at_gmail.com>
Date: Sat, 30 May 2009 20:51:20 +0000
lock order reversal:
 1st 0xffffff8000699018 iwn0_com_lock (iwn0_com_lock) _at_
/usr/src/sys/net80211/ieee80211_proto.c:1072
 2nd 0xffffff80006d7080 iwn0 (network driver) _at_
/usr/src/sys/modules/iwn/../../dev/iwn/if_iwn.c:2845
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
_witness_debugger() at _witness_debugger+0x2e
witness_checkorder() at witness_checkorder+0x81e
_mtx_lock_flags() at _mtx_lock_flags+0x78
iwn_wme_update() at iwn_wme_update+0xa3
ieee80211_wme_updateparams_locked() at ieee80211_wme_updateparams_locked+0xef
ieee80211_wme_updateparams() at ieee80211_wme_updateparams+0x52
ieee80211_wme_initparams() at ieee80211_wme_initparams+0x1d9
ieee80211_sta_join1() at ieee80211_sta_join1+0xb0
setmlme_assoc() at setmlme_assoc+0x70
ieee80211_ioctl_setmlme() at ieee80211_ioctl_setmlme+0x91
ieee80211_ioctl_set80211() at ieee80211_ioctl_set80211+0xb3a
in_control() at in_control+0x273
ifioctl() at ifioctl+0x2de
kern_ioctl() at kern_ioctl+0x92
ioctl() at ioctl+0xfd
syscall() at syscall+0x1dd
Xfast_syscall() at Xfast_syscall+0xd0
--- syscall (54, FreeBSD ELF64, ioctl), rip = 0x800c8940c, rsp =
0x7fffffffde18, rbp = 0x2a ---
Received on Sat May 30 2009 - 19:16:36 UTC

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