Re: serial console and panic

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

Emmanuel Dreyfus wrote:
> I have an amd64 machine that exhibit this since it has been upgraded to
> 5.0. It seems to happen in dhclient after a mysterious reboot (no log
> about it) The machine is a NFS client for /usr, has a RAMdisk for /, and
> a serial console
> 
> Any idea?
> 
> fatal breakpoint trap in supervisor mode
> trap type 1 code 0 rip ffffffff804a2d25 cs 8 rflags 202 cr2
> 7f7ffd62f020 cpl 8 rsp ffff8000568626a8
> db{0}> bt
> breakpoint() at netbsd:breakpoint+0x5
> comintr() at netbsd:comintr+0x53a
> Xintr_ioapic_edge9() at netbsd:Xintr_ioapic_edge9+0xef
> --- interrupt ---
> lapic_gettick() at netbsd:lapic_gettick+0x7
> re_miibus_readreg() at netbsd:re_miibus_readreg+0x18c
> rgephy_load_dspcode() at netbsd:rgephy_load_dspcode+0xf2
> rgephy_service() at netbsd:rgephy_service+0x32d
> mii_down() at netbsd:mii_down+0x3b
> re_stop() at netbsd:re_stop+0x2e
> re_init() at netbsd:re_init+0x99
> re_ioctl() at netbsd:re_ioctl+0x4d
> ifioctl() at netbsd:ifioctl+0x635
> soo_ioctl() at netbsd:soo_ioctl+0x24e
> sys_ioctl() at netbsd:sys_ioctl+0x134
> syscall() at netbsd:syscall+0xb6
> 

Looks like, there's a relation to PR kern/40734.

Christoph