Re: kern/55699: Panic certainly in iSCSI initiator

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

Paul Goyette a écrit :
> The following reply was made to PR kern/55699; it has been noted by GNATS.
> 
> From: Paul Goyette <paul%whooppee.com@localhost>
> To: gnats-bugs%netbsd.org@localhost
> Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost, 
>     joel.bertrand%systella.fr@localhost
> Subject: Re: kern/55699: Panic certainly in iSCSI initiator
> Date: Wed, 7 Oct 2020 07:04:38 -0700 (PDT)
> 
>  On Wed, 7 Oct 2020, Michael van Elst wrote:
>  
>  <snip>
>  
>  > The rip is the same as the fault adress (cr2), which means some
>  > code should be executed that is no longer in memory. My guess is
>  > that the usbverbose module is unloaded while in use (which would
>  > be a bug). A workaround would then be to load that module manually.
>  
>  It might be helpful to set
>  
>   	sysctl -w kern.module.verbose=1
>  
>  to confirm this possibility.
>  

I don't know if I can confirm this possibility.

I have removed usbverbose from kernel: modunload usbverbose.
No error. Just after, I have set kern.module.verbose=1

When I start bacula job (and stop to avoid panic...), I obtain on console :



[ 10736.911324] DEBUG: module: Loading plist from
/stand/amd64/9.0/modules/usbverbose/usbverbose.plist
[ 10736.911324] DEBUG: module: plist load returned error 2 for
`/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod'
[ 10736.921726] DEBUG: module: module `usbverbose' loaded successfully
[ 10746.925138] DEBUG: module: unload requested for 'usbverbose' (FALSE)
[ 10746.925138] DEBUG: module: unloaded module `usbverbose'
[ 10746.965153] DEBUG: module: Loading module from
/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod
[ 10746.965153] DEBUG: module: Loading plist from
/stand/amd64/9.0/modules/usbverbose/usbverbose.plist
[ 10746.965153] DEBUG: module: plist load returned error 2 for
`/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod'
[ 10746.975404] DEBUG: module: module `usbverbose' loaded successfully
[ 10753.947813] DEBUG: module: unload requested for 'usbverbose' (TRUE)
[ 10753.947813] DEBUG: module: unloaded module `usbverbose'
[ 10756.998976] DEBUG: module: Loading module from
/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod
[ 10756.998976] DEBUG: module: Loading plist from
/stand/amd64/9.0/modules/usbverbose/usbverbose.plist
[ 10756.998976] DEBUG: module: plist load returned error 2 for
`/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod'
[ 10757.019631] DEBUG: module: module `usbverbose' loaded successfully
[ 10767.012792] DEBUG: module: unload requested for 'usbverbose' (FALSE)
[ 10767.012792] DEBUG: module: unloaded module `usbverbose'
[ 10767.042803] DEBUG: module: Loading module from
/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod
[ 10767.042803] DEBUG: module: Loading plist from
/stand/amd64/9.0/modules/usbverbose/usbverbose.plist
[ 10767.042803] DEBUG: module: plist load returned error 2 for
`/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod'
[ 10767.052828] DEBUG: module: module `usbverbose' loaded successfully
[ 10777.056620] DEBUG: module: unload requested for 'usbverbose' (FALSE)
[ 10777.056620] DEBUG: module: unloaded module `usbverbose'
[ 10777.076627] DEBUG: module: Loading module from
/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod
[ 10777.076627] DEBUG: module: Loading plist from
/stand/amd64/9.0/modules/usbverbose/usbverbose.plist
[ 10777.076627] DEBUG: module: plist load returned error 2 for
`/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod'
[ 10777.096792] DEBUG: module: module `usbverbose' loaded successfully
[ 10787.090445] DEBUG: module: unload requested for 'usbverbose' (FALSE)
[ 10787.090445] DEBUG: module: unloaded module `usbverbose'
[ 10787.120456] DEBUG: module: Loading module from
/stand/amd64/9.0/modules/usbverbose/usbverbose.kmod

	Regards,

	JKB