kern/181100: [bwi] Turning up bwi0 crashes / deadlocks the kernel
Julio Merino
julio at meroh.net
Sun Aug 11 16:50:01 UTC 2013
The following reply was made to PR kern/181100; it has been noted by GNATS.
From: Julio Merino <julio at meroh.net>
To: bug-followup at freebsd.org, julio+host-mastodon-jmmv at 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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