Re: panic: LOCKDEBUG: Mutex error: mutex_vector_enter,514: spin lock held

[Paul Ripke <stix%stix.id.au@localhost>]

On Wed, Apr 22, 2020 at 09:44:56PM +0000, Andrew Doran wrote:
> Hi Paul,
> 
> On Wed, Apr 22, 2020 at 12:06:41PM +1000, Paul Ripke wrote:
> > On -current as of ~yesterday, in a 1CPU amd64 qemu boot, I'm seeing:
> > 
> > Waiting for duplicate address detection to finish...
> > Starting dhcpcd.
> > dhcpcd-9.0.1 starting
> > unknown option:
> > [  17.0102686] wm0: link state UP (was UNKNOWN)
> > wm0: carrier acquired
> > unknown option:
> > [  17.1710186] pid 122 (dhcpcd), uid 35: exited on signal 11 (core not dumped, err = 1)
> > dhcpcd_fork_cb: truncated read 0 (expected 4)
> > /etc/rc.d/dhcpcd exited with code 1
> > Building databases: dev[  19.2211655] Mutex error: mutex_vector_enter,514: spin lock held
> > 
> > [  19.2211655] lock address : 0xffffffff81765a40 type     :               spin
> > [  19.2211655] initialized  : 0xffffffff80a2690f
> > [  19.2211655] shared holds :                  0 exclusive:                  1
> > [  19.2211655] shares wanted:                  0 exclusive:                  0
> > [  19.2211655] relevant cpu :                  0 last held:                  0
> > [  19.2211655] relevant lwp : 0xffff80a57f71c2c0 last held: 0xffff80a57f71c2c0
> > [  19.2211655] last locked* : 0xffffffff80a24843 unlocked : 0xffffffff80a268e7
> > [  19.2211655] owner field  : 0x0000000000010600 wait/spin:                0/1
> > 
> > [  19.2211655] panic: LOCKDEBUG: Mutex error: mutex_vector_enter,514: spin lock held
> > [  19.2211655] cpu0: Begin traceback...
> > [  19.2211655] vpanic() at netbsd:vpanic+0x178
> > [  19.2211655] snprintf() at netbsd:snprintf
> > [  19.2211655] lockdebug_more() at netbsd:lockdebug_more
> > [  19.2211655] mutex_enter() at netbsd:mutex_enter+0x3c7
> > [  19.2211655] vmem_rehash_all() at netbsd:vmem_rehash_all+0x13a
> > [  19.2211655] workqueue_worker() at netbsd:workqueue_worker+0xe1
> > [  19.2211655] cpu0: End traceback...
> > 
> > Seems consistent between attempts.
> > 
> > Known? Meanwhile, I'll re-sync and try again.
> 
> This one was fixed with src/sys/kern/subr_vmem.c 1.103.

Thanks, I'll wait for the github mirror to catch up - it seems to
erratically lag. Unfortunately(?) I switched away from cvsup some time
ago...

-- 
Paul Ripke
"Great minds discuss ideas, average minds discuss events, small minds
 discuss people."
-- Disputed: Often attributed to Eleanor Roosevelt. 1948.