Re: port-i386/42966: kernel built from today's netbsd-5 crashes

[David H. Gutteridge <dhgutteridge%sympatico.ca@localhost>]

The following reply was made to PR port-i386/42966; it has been noted by GNATS.

From: David H. Gutteridge <dhgutteridge%sympatico.ca@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-i386/42966: kernel built from today's netbsd-5 crashes
Date: Tue, 16 Mar 2010 21:54:38 -0400

 On 2010-03-16, at 9:35 PM, David H. Gutteridge wrote:
 
 >> Is no one else reporting this?  I didn't think my configuration was
 >> unusual...
 >>=20
 >> Anne Bennett.
 >=20
 > You have the diagnostic option enabled, which is non-standard; it
 > seems your kernel is hitting an assert that only fires if you've
 > compiled it to do so.  I will try and duplicate this for you.  (I'm
 > running netbsd-5 on a netbook with an Intel 945GRM without issue.)
 >=20
 > I'm also seeing strange time-keeping events since the last update I
 > made against the netbsd-5 branch, but my experience is much milder =
 than
 > yours, I just see impossible CPU times against particular programs as
 > given by ps(1) and top(1), e.g. a program that's supposedly consumed
 > almost a year of CPU time even though the machine has been up for only
 > three days.
 >=20
 > Regards,
 >=20
 > Dave
 
 With option DIAGNOSTIC I can reproduce this, viz.:
 
 i915drm0 at vga0: Intel i945GME
 panic: kernel diagnostic assertion "(boundary & (boundary - 1)) =3D=3D =
 0" failed: file "/home/disciple/netbsd-5/usr/src/sys/uvm/uvm_pglist.c", =
 line 403
 fatal breakpoint trap in supervisor mode
 trap type 1 code 0 eip c03fdd1c cs 8 eflags 246 cr2 0 ilevel 8
 
 Disabling the option in question should allow your kernel to boot
 normally.
 
 Dave
 
 PS Somehow I made up an Intel "945GRM", scary.=