Re: kern/53939: system panics on bringing vioif(4) interface up

[yamaguchi <yamaguchi%NetBSD.org@localhost>]

I fixed a panic related to vioif(4), and the modification
might fix the reported panic, too.

> https://mail-index.netbsd.org/source-changes/2019/02/04/msg103058.html

Can you check?

Thanks,
-- yamaguchi

On 2019/02/04 2:45, venture37%geeklan.co.uk@localhost wrote:
> > Number:         53939
> > Category:       kern
> > Synopsis:       system panics on bringing vioif(4) interface up
> > Confidential:   no
> > Severity:       serious
> > Priority:       medium
> > Responsible:    kern-bug-people
> > State:          open
> > Class:          sw-bug
> > Submitter-Id:   net
> > Arrival-Date:   Sun Feb 03 17:45:00 +0000 2019
> > Originator:     Sevan Janiyan
> > Release:        8.99.30 & 8.99.33
> > Organization:
> > Environment:
> amd64
> > Description:
> VM is a bhyve guest, upon boot the system panics with the following back trace
>   
> Waiting for DAD to complete for statically configured addresses...
> [   4.3541290] uvm_fault(0xffff80253f2272e0, 0x0, 1) -> e
> [   4.3541290] fatal page fault in supervisor mode
> [   4.3541290] trap type 6 code 0 rip 0xffffffff80de624d cs 0x8 rflags 0x10286 cr2 0x18 ilevel 0x6 rsp 0xffff850032b209a0
> [   4.3541290] curlwp 0xffff80255391b1a0 pid 113.1 lowest kstack 0xffff850032b1d2c0
> [   4.3541290] panic: trap
> [   4.3541290] cpu0: Begin traceback...
> [   4.3634952] vpanic() at netbsd:vpanic+0x16f
> [   4.3634952] snprintf() at netbsd:snprintf
> [   4.3634952] startlwp() at netbsd:startlwp
> [   4.3634952] alltraps() at netbsd:alltraps+0xc8
> [   4.3634952] vioif_init() at netbsd:vioif_init+0x99
> [   4.3634952] ether_ioctl() at netbsd:ether_ioctl+0x131
> [   4.3634952] vioif_ioctl() at netbsd:vioif_ioctl+0x2f
> [   4.3735020] in_ifinit() at netbsd:in_ifinit+0x137
> [   4.3735020] in_control() at netbsd:in_control+0x13e6
> [   4.3735020] udp_ioctl_wrapper() at netbsd:udp_ioctl_wrapper+0x32
> [   4.3735020] compat_ifioctl() at netbsd:compat_ifioctl+0x12f
> [   4.3735020] doifioctl() at netbsd:doifioctl+0xeac
> [   4.3735020] sys_ioctl() at netbsd:sys_ioctl+0x11c
> [   4.3835103] syscall() at netbsd:syscall+0x173
> [   4.3835103] --- syscall (number 54) ---
> [   4.3835103] 734e72b1a88a:
> [   4.3835103] cpu0: End traceback...
>
> > How-To-Repeat:
> > Fix: