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Date: Mon, 14 Aug 2006 12:39:32 -0400
From: "Scott Ullrich" <sullrich@gmail.com>
To: "freebsd-pf@freebsd.org" <freebsd-pf@freebsd.org>
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Subject: CARP panics on RELENG_6 when destroying a CARP interface
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X-List-Received-Date: Mon, 14 Aug 2006 16:39:40 -0000

Hello!

I am testing out CARP on RELENG_6 as of yesterday and I am seeing a
panic when attempting to destory a CARP interface:

# ifconfig carp0 delete
# ifconfig carp0 destroy
# panic: thread 100049(ifconfig):0 holds carp_if but isn't blocked on a lock

KDB: enter: panic
[thread pid 12 tid 100004 ]
Stopped at      kdb_enter+0x2b: nop
db> bt
Tracing pid 12 tid 100004 td 0xc14d6900
kdb_enter(c08690a0) at kdb_enter+0x2b
panic(c086c2f3,186d6,c1630bc4,0,c0876fc4) at panic+0xbb
propagate_priority(c14d6900,c0948fd0,c15a7e90,c14d6900,c1575000) at propagate_pr
iority+0x137
turnstile_wait(c15a7e90,c1632000,c15a7e90,2,c0868048,225) at turnstile_wait+0x2f
0
_mtx_lock_sleep(c15a7e90,c14d6900,0,c0876cbe,283) at _mtx_lock_sleep+0x102
_mtx_lock_flags(c15a7e90,0,c0876cbe,283,0) at _mtx_lock_flags+0x72
carp_input_c(c15e8500,c15e8544,2,c15e8544,c172100e) at carp_input_c+0x30
carp_input(c16eb700,14,c15fa940,0,0) at carp_input+0x216
ip_input(c16eb700) at ip_input+0x7ad
netisr_processqueue(c094a958) at netisr_processqueue+0x6e
swi_net(0) at swi_net+0xc6
ithread_execute_handlers(c14d5830,c14d3580) at ithread_execute_handlers+0xe6
ithread_loop(c14bd760,c796cd38,c14bd760,c05f76a8,0) at ithread_loop+0x66
fork_exit(c05f76a8,c14bd760,c796cd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xc796cd6c, ebp = 0 ---
db>

Please let me know if I can supply more information.

Thanks!