Date: Mon, 20 Jul 2009 22:00:17 GMT From: Rene Ladan <rene@freebsd.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/136943: [lor] wpi0_com_lock / wpi0 Message-ID: <200907202200.n6KM0H2I011314@freefall.freebsd.org>
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The following reply was made to PR kern/136943; it has been noted by GNATS. From: Rene Ladan <rene@freebsd.org> To: bug-followup@FreeBSD.org Cc: bzeeb+freebsd+lor@zabbadoz.net Subject: Re: kern/136943: [lor] wpi0_com_lock / wpi0 Date: Mon, 20 Jul 2009 23:31:57 +0200 The same LOR with a different backtrace: lock order reversal: 1st 0xffffff80002dc018 wpi0_com_lock (wpi0_com_lock) @ /usr/src/sys/modules/wpi/../../dev/wpi/if_wpi.c:1291 2nd 0xffffff00024c0010 wpi0 (network driver) @ /usr/src/sys/modules/wpi/../../dev/wpi/if_wpi.c:2068 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 wpi_raw_xmit() at wpi_raw_xmit+0x7a ieee80211_send_mgmt() at ieee80211_send_mgmt+0x4d5 sta_newstate() at sta_newstate+0x42e wpi_newstate() at wpi_newstate+0xee ieee80211_newstate_cb() at ieee80211_newstate_cb+0xac taskqueue_run() at taskqueue_run+0x96 taskqueue_thread_loop() at taskqueue_thread_loop+0x3f fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xffffff803c22bd30, rbp = 0 ---
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