Re: Re: reproducible kernel crash with quota

[6bone%6bone.informatik.uni-leipzig.de@localhost]

On Thu, 14 Apr 2022, J. Hannken-Illjes wrote:

> Date: Thu, 14 Apr 2022 13:09:02 +0200
> From: J. Hannken-Illjes <hannken%mailbox.org@localhost>
> To: 6bone%6bone.informatik.uni-leipzig.de@localhost
> Cc: current-users%netbsd.org@localhost, Manuel Bouyer <bouyer%antioche.eu.org@localhost>
> Subject: [Extern] Re: reproducible kernel crash with quota
>
> > On 12. Apr 2022, at 08:52, 6bone%6bone.informatik.uni-leipzig.de@localhost wrote:
> >
> > Hello,
> >
> > since I already have some open bugs with reproducible kernel crashes, I'm only writing this to the mailing list.
> >
> > how to reproduce the crash: /etc/rc.d/quota restart
> >
> > dmesg:
> >
> > [   412.047595] panic: kernel diagnostic assertion "dq->dq_ump->um_quotas[dq->dq _type] != vp" failed: file "/usr/src/sys/ufs/ufs/ufs_quota.c", line 978
> > [   412.047595] cpu8: Begin traceback...
> > [   412.047595] vpanic() at netbsd:vpanic+0x156
> > [   412.057595] kern_assert() at netbsd:kern_assert+0x4b
> > [   412.057595] dqflush() at netbsd:dqflush+0x92
> > [   412.057595] quota1_handle_cmd_quotaoff() at netbsd:quota1_handle_cmd_quotaof f+0x120
> > [   412.057595] ufs_quotactl() at netbsd:ufs_quotactl+0x3d
> > [   412.057595] VFS_QUOTACTL() at netbsd:VFS_QUOTACTL+0x22
> > [   412.057595] vfs_quotactl_quotaoff() at netbsd:vfs_quotactl_quotaoff+0x1b
> > [   412.057595] do_sys_quotactl() at netbsd:do_sys_quotactl+0xf1
> > [   412.067595] sys___quotactl() at netbsd:sys___quotactl+0x2e
> > [   412.067595] syscall() at netbsd:syscall+0x196
> > [   412.067595] --- syscall (number 473) ---
> > [   412.067595] netbsd:syscall+0x196:
> > [   412.067595] cpu8: End traceback...
> >
> > [   412.067595] dumping to dev 168,1 (offset=8, size=33425953):
> > [   412.067595] dump
> >
> >
> > (gdb) target kvm netbsd.1.core
> <snip>
>
> I'm quite sure you have a /etc/fstab with "userquota,groupquota", yes?
>
> with gdb:
>
> frame 4 (dqflush())
> print dq->dq_ump->um_quotas[0]
> print dq->dq_ump->um_quotas[1]
>
> gives the same vnode address for both fields, yes?
>
> If this is the case the attached diff should help, since 2012-01-30
> group quota got enabled on the user quota file.
>
> As a workaround you could try to name the quota files in /etc/fstab
> like "groupquota=XXX/quota.group".

You are right. I use groupquota and userquota in fstab. I tested the 
patch. With patch there is no crash. But the /etc/rc.d/quota restart leads 
to the blocking of the file system. You can only turn off the server. This 
also happens when I only use userquota in the fstab.


Thank you for your efforts

Regards
Uwe


> > Maybe someone can fix the problem.
> >
> >
> > Thank you for your efforts
> >
> >
> > Regards
> > Uwe
>
> --
> J. Hannken-Illjes - hannken%mailbox.org@localhost