Re: kern/51877: carp related panic during shutdown

[Hauke Fath <hf%spg.tu-darmstadt.de@localhost>]

The following reply was made to PR kern/51877; it has been noted by GNATS.

From: Hauke Fath <hf%spg.tu-darmstadt.de@localhost>
To: gnats-bugs%NetBSD.org@localhost, kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost
Cc: 
Subject: Re: kern/51877: carp related panic during shutdown
Date: Wed, 18 Jan 2017 15:04:03 +0100

 On 01/18/17 08:05, Ryota Ozaki wrote:
 > I don't have any ideas :-/ I hope clean build solves the issue.
 
 I removed the objdir tree, 'cvs update'd, and built tools and kernel 
 from scratch:
 
 [...]
 igphy3: detached
 wm3: detached
 igphy2: detached
 wm2: detached
 igphy1: detached
 wm1: detached
 igphy0: detached
 carp0: state transition from: MASTER -> to: INIT
 Mutex error: lockdebug_barrier: spin lock held
 
 lock address : 0xfffffe821e74f400 type     :               spin
 initialized  : 0xffffffff80426f7a
 shared holds :                  0 exclusive:                  1
 shares wanted:                  0 exclusive:                  0
 current cpu  :                  0 last held:                  0
 current lwp  : 0xfffffe821ae8b9e0 last held: 0xfffffe821ae8b9e0
 last locked* : 0xffffffff8044bc9a unlocked : 0xffffffff8040a72c
 owner field  : 0x0000000000010700 wait/spin:                0/1
 
 Skipping crash dump on recursive panic
 panic: LOCKDEBUG: Mutex error: lockdebug_barrier: spin lock held
 cpu0: Begin traceback...
 vpanic() at netbsd:vpanic+0x140
 snprintf() at netbsd:snprintf
 lockdebug_more() at netbsd:lockdebug_more
 rw_enter() at netbsd:rw_enter+0x5fe
 uvm_fault_internal() at netbsd:uvm_fault_internal+0x161
 trap() aaaaat netbsd:trap+0x30a
 --- trap (number 6) ---
 mutex_tryenter() at netbsd:mutex_tryenter+0x12
 lwp_trylock() at netbsd:lwp_trylock+0x17
 turnstile_block() at netbsd:turnstile_block+0x238
 mutex_enter() at netbsd:mutex_enter+0x36c
 rt_update_wait() at netbsd:rt_update_wait+0x10
 _rt_free() at netbsd:_rt_free+0x11
 rtrequest1() at netbsd:rtrequest1+0x5ef
 rtrequest() at netbsd:rtrequest+0x3e
 carp_setroute() at netbsd:carp_setroute+0xd3
 carp_setrun() at netbsd:carp_setrun+0x56
 carp_carpdev_state() at netbsd:carp_carpdev_state+0x6c
 if_down() at netbsd:if_down+0x17d
 if_detach() at netbsd:if_detach+0x1d8
 wm_detach() at netbsd:wm_detach+0xc1
 config_detach() at netbsd:config_detach+0xf8
 config_detach_all() at netbsd:config_detach_all+0x97
 cpu_reboot() at netbsd:cpu_reboot+0x176
 sys_reboot() at netbsd:sys_reboot+0x75
 syscall() at netbsd:syscall+0x1db
 --- syscall (number 208) ---
 741aebe3c99a:
 cpu0: End traceback...
 rebooting...
 
 -- that is, same old.
 
 Cheerio,
 hauke
 
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