Date: Sun, 11 Aug 2013 16:50:01 GMT From: Julio Merino <julio@meroh.net> To: freebsd-wireless@FreeBSD.org Subject: Re: kern/181100: [bwi] Turning up bwi0 crashes / deadlocks the kernel Message-ID: <201308111650.r7BGo1Qt048071@freefall.freebsd.org>
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The following reply was made to PR kern/181100; it has been noted by GNATS. From: Julio Merino <julio@meroh.net> To: bug-followup@freebsd.org, julio+host-mastodon-jmmv@meroh.net Cc: Subject: Re: kern/181100: [bwi] Turning up bwi0 crashes / deadlocks the kernel Date: Sun, 11 Aug 2013 12:40:56 -0400 I rebuilt a kernel with WITNESS enabled and got the following stacktrace, which probably sheds some useful details. Copying by hand so omitting addresses: Sleeping on "fwload" with the following non-sleepable locks held: exclusive sleep mutex bwi0 (network driver) r = 0 (0x...) locked @ /usr/src/sys/modules/bwi/../../dev/bwi/if_bwi.c:1313 KDB: stack backtrace: 0x...: at .kdb_backgrace 0x...: at ._witness_debugger 0x...: at .witness_warn 0x...: at ._sleep 0x...: at .firmware_get 0x...: at .bwi_mac_init 0x...: at .bwi_init_statechg 0x...: at .bwi_ioctl 0x...: at .parent_updown 0x...: at .taskqueue_run_locked 0x...: at .taskqueue_thread_loop 0x...: at .fork_exit 0x...: at .fork_tramploline 0x...: at fffffffffffffffc bwi0: firmware rev 0x0127, patch level 0x000e panic: rate 130 is basic/mcs? cpuid = 0 KDB: stack backtrace: 0x...: at .kdb_backtrace 0x...: at .vpanic 0x...: at .kassert_panic 0x...: at .bwi_mac_set_ackrates 0x...: at .bwi_mac_init 0x...: at .bwi_init_statechg 0x...: at .bwi_ioctl 0x...: at .parent_updown 0x...: at .taskqueue_run_locked 0x...: at .taskqueue_thread_loop 0x...: at .fork_exit 0x...: at .fork_trampoline 0x...: at fffffffffffffffc KDB: enter: panic [ thread pid 0 tid 100100 ] Stopped at 0x... -- Julio Merino / @jmmv
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