Re: wm0 panic

[Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>]

Hi,

On 2020/06/28 0:24, Patrick Welche wrote:
> Trying a today's -current/amd64 with DIAGNOSTIC/DEBUG/LOCKDEBUG, I can
> boot multiuser without a network. If I log in as root, as soon as I hit
> enter:
>
> # ifconfig wm0 inet 10.0.0.62 netmask 0xffffff00
> [ 127.5763268] Kernel lock error 127.5763268] lock address : 0xffffffff8106ab40 type     :               spin
> [ 127.5863237] initialized  : 0xffffffff80b0bbb9
> [ 127.5863237] shared holds :                  0 exclusive:                  1
> [ 127.5963238] shares wanted:                  0 exclusive:                  1
> [ 127.6063236] relevant cpu :                  1 last held:                  0
> [ 127.6163235] relevant lwp : 0xffff8d419a07f20
> [ 127.6163235] last locked* : 0xffffffff80a7d2f5 unlocked : 0xffffffff80a7d2e6
> [ 127.6263235] curcpu holds :                  0 wanted by: 0xffff8d419a07f200
> [ 127.6363234] panic: LOCKDEBock,244: spinout
> [ 127.6363234] cpu1: Begin traceback...
> [ 127.6463233] vpanic() at netbsd:vpanic+0x152
> [ 127.6463233] snprintf() at netbsd:snprintf
> [ 127.6563232] lockdebug_more() at netbsd:lockdebug_more
> [ 127.6563232] _kernel_lock() at netbsd:_kernel_lock+0x244
> [ 127.6663231] ip_slowtimo() at netbsd:ip_slowtimo+0x1a
> [ 127.6763231] pfslowtimo() at netbsd:pfslowtimo+0x34
> [ 127.6763231] callout_softclock() at netbsd:callout_softclock+0x10f
> [ 127.6863230] softint_disph+0x108
> [ 127.6863230] DDB lost frame for netbsd:Xsoftintr+0x4f, trying 0xffffa4825d02eff0
> [ 127.6963230] Xsoftintr() at netbsd:Xsoftintr+0x4f
> [ 127.7063229] --- interrupt ---
> [ 127.706322traceback...
It seems some other code have held KERNEL_LOCK too long time.
Could you show the function of last locked address?
# e.g. addr2line -e "your kernel image" -f 0xffffffff80a7d2f5

If the panic can reappear, could you show "show all locks/t" of ddb?


Thanks,

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Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>