Subject: Re: VM problems?
To: der Mouse <mouse@Rodents.Montreal.QC.CA>
From: None <rmcm@compsoft.com.au>
List: port-sparc
Date: 10/01/1998 15:45:05
Also having some weird memory-like problems (emacs{+/-X,19.34,20.2},
Xsun, fvwm2), with SS1 and SS1+ running 1.3.2 (as distributed, +/-
GENERIC kernel). gdb shows a variety of traces (listed
below). Swapping memory had no effect - but after netbooting sunos4,
the SS1+ has been running for 3+ weeks without problem. 1.3.2 appears
to be the only consistant factor associated with these problems. Any
suggestions?
- Core was generated by `emacs'.
Program terminated with signal 4, Illegal instruction.
#0 0x1036df28 in bcopy ()
#0 0x1036df28 in bcopy ()
----------------------------------------
- Core was generated by `emacs'.
Program terminated with signal 10, Bus error.
#0 fatal_error_signal (sig=3D10)
at /usr/local/src/gnu/emacs-19.34/src/emacs.c:181
181=09}
#0 fatal_error_signal (sig=3D10)
at /usr/local/src/gnu/emacs-19.34/src/emacs.c:181
#1 0xefffff74 in ?? ()
#2 0x1022cb8c in XDrawImageString ()
#3 0x100000c in ?? ()
#4 0xc in ?? ()
#5 0x1018e228 in ?? ()
Cannot access memory at address 0x9210004a.
----------------------------------------
- Core was generated by `emacs'.
Program terminated with signal 11, Segmentation fault.
#0 fatal_error_signal (sig=3D11)
at /usr/local/src/gnu/emacs-19.34/src/emacs.c:181
181=09}
#0 fatal_error_signal (sig=3D11)
at /usr/local/src/gnu/emacs-19.34/src/emacs.c:181
#1 0xefffff74 in ?? ()
#2 0xf00062fc in ?? ()
#3 0xa in ?? ()
#4 0x779e8 in re_search_2 (bufp=3D0x0, string1=3D0x19 "\003\22=
30=EF=FF=D7\212",=20
size1=3D2170304, string2=3D0x0, size2=3D-268443848, startpo=
s=3D22, range=3D2196736,=20
regs=3D0x211b80, stop=3D1) at /usr/local/src/gnu/emacs-19.3=
4/src/regex.c:3375
#5 0x3e in ?? ()
Cannot access memory at address 0x4020f038.
----------------------------------------
- Core was generated by `emacs'.
Program terminated with signal 6, Abort trap.
----------------------------------------
- Core was generated by `Xsun'.
Program terminated with signal 10, Bus error.
----------------------------------------
------------------------------------------------------------
Rex McMaster rmcm@compsoft.com.au=20
rex@mcmaster.wattle.id.au
PGP Public key: http://www.compsoft.com.au/~rmcm/pgp-pk
der Mouse writes:
> I've got a weird problem with NetBSD/sparc, and I suspect something
> weird in the VM subsystem.
>=20
> I (co-)run a mud on one of my home machines. Over the last couple o=
f
> days, I started trying to move this to sparkle, a SS1+ running
> NetBSD/sparc.
>=20
> I started getting weird crashes: according to gdb, pointers were tak=
ing
> on impossible values, and never quite the same crash twice. My firs=
t
> thought was, flaky RAM: I'd just recently pulled 4x1M and replaced i=
t
> with new 4x4M. Moving the RAM to another machine (a 386 that has
> memory tests capable of identifying both of my known-bad SIMMs) turn=
ed
> up no problems.
>=20
> Then I tried it on another SS1+ running the same OS (built from the
> very same source tree), whose hardware hasn't been touched in ages.
> Very similar crash.
>=20
> Then I tried it on a SS2 running NetBSD 1.2 (still at 1.2 because, a=
s I
> mentioned in another thread, more modern kernels can't seem to play =
CDs
> in its CD drive). Worked like a charm.
>=20
> Thus, I conjecture there's something softwary wrong, probably with t=
he
> VM subsystem. The source tree does have a number of patches, but no=
ne
> to UVM. (I have two patches in vm/, but - I just checked - nothing =
in
> there is getting used; I am using uvm/.)
>=20
> Any way I can help debug this? If necessary I can probably even set=
up
> serial-console access to one of the affected machines, if pk or some=
one
> wants to ssh in to one of my machines for it, set it up with a
> crash-and-burn disk that I don't mind wiping later....
>=20
> =09=09=09=09=09der Mouse
>=20
> =09=09=09 mouse@rodents.montreal.qc.ca
> =09=09 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
--=20