Date: Sat, 21 Jul 2012 18:21:03 -0700 From: Adrian Chadd <adrian.chadd@gmail.com> To: Kim Culhan <w8hdkim@gmail.com> Cc: freebsd-wireless@freebsd.org Subject: Re: ath lor Message-ID: <CAJ-VmomuBC0CFTkDRh8gRVAb080rc8upTif4KDAkeiG5imcoqw@mail.gmail.com> In-Reply-To: <CAKZxVQUcuk=Bw0rBkOLmy1ie%2BZYqn5uNkEndW_sEOH5u-Ef04w@mail.gmail.com> References: <CAKZxVQUcuk=Bw0rBkOLmy1ie%2BZYqn5uNkEndW_sEOH5u-Ef04w@mail.gmail.com>
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This is one of those known LORs in net80211. I'd love to get someone to help fix. :) adiran On 21 July 2012 13:18, Kim Culhan <w8hdkim@gmail.com> wrote: > Observed some instances of this lor: > > Jul 21 16:09:49 foo kernel: lock order reversal: > Jul 21 16:09:49 foo kernel: 1st 0xffffff8001ad3948 ath0_scan_lock > (ath0_scan_lock) @ /usr/src/sys/net80211/ieee8 > 0211_node.c:2166 > Jul 21 16:09:49 foo kernel: 2nd 0xffffff8001ad2018 ath0_com_lock > (ath0_com_lock) @ /usr/src/sys/net80211/ieee802 > 11_node.c:2518 > Jul 21 16:09:49 foo kernel: KDB: stack backtrace: > Jul 21 16:09:49 foo kernel: db_trace_self_wrapper() at > db_trace_self_wrapper+0x37 > Jul 21 16:09:49 foo kernel: kdb_backtrace() at kdb_backtrace+0x39 > Jul 21 16:09:49 foo kernel: witness_checkorder() at witness_checkorder+0xca1 > Jul 21 16:09:49 foo kernel: _mtx_lock_flags() at _mtx_lock_flags+0x79 > Jul 21 16:09:49 foo kernel: ieee80211_node_leave() at > ieee80211_node_leave+0x97 > Jul 21 16:09:49 foo kernel: ieee80211_iterate_nodes() at > ieee80211_iterate_nodes+0x89 > Jul 21 16:09:49 foo kernel: setmlme_common() at setmlme_common+0x408 > Jul 21 16:09:49 foo kernel: ieee80211_ioctl_setmlme() at > ieee80211_ioctl_setmlme+0x87 > Jul 21 16:09:49 foo kernel: ieee80211_ioctl_set80211() at > ieee80211_ioctl_set80211+0x5b0 > Jul 21 16:09:49 foo kernel: in_control() at in_control+0x234 > Jul 21 16:09:49 foo kernel: ifioctl() at ifioctl+0x148c > Jul 21 16:09:49 foo kernel: kern_ioctl() at kern_ioctl+0x1dc > Jul 21 16:09:49 foo kernel: sys_ioctl() at sys_ioctl+0x12e > Jul 21 16:09:50 foo kernel: amd64_syscall() at amd64_syscall+0x25a > Jul 21 16:09:50 foo kernel: Xfast_syscall() at Xfast_syscall+0xfb > Jul 21 16:09:50 foo kernel: --- syscall (54, FreeBSD ELF64, > sys_ioctl), rip = 0x801210dfc, rsp = 0x7fffffffda78, > rbp = 0x2a --- > Jul 21 16:09:50 foo kernel: ath0: stuck beacon; resetting (bmiss count 4) > > thanks > -kim
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