2.2.x kernel panics when using Sparc serial console

Kirk Rafferty (kirk@rafferty.org)
Fri, 3 Sep 1999 14:09:32 -0600 (MDT)


Sparc 20 with 2 60Mhz Sparc processors running Red Hat Linux
5.2. I've put the packages Red Hat recommends for running a
2.2 kernel on Red Hat Linux 5.2. I'm running the machine
headless, and when I boot the kernel (anything from 2.2.5 to
2.2.12) I get this on the console:

zs_open cua0, tty overwrite.
zs_open cua0, tty overwrite.
zs_open cua0, tty overwrite.
zs_open cua0, tty overwrite.
zs_open cua0, tty overwrite.
[ ... This will go on forever ... ]

The machine at this point seems to be running nicely if I
telnet in, but if I press a key on the serial console, the
kernel panics like so:

Unable to handle kernel NULL pointer
dereference<1>tsk->mm->context =
00000001 tsk->mm->pgd = f2e35000
\|/ ____ \|/
"@'/ ,. \`@"
/_| \__/ |_\
\__U_/
ifup(125): Oops
PSR: 00900fc1 PC: f0141e24 NPC: f0141e28 Y: 10e69800
g0: f0041d64 g1: 00400fe3 g2: 00000021 g3: 00000021 g4:
e00e1040 g5:
00000000 g6
: ff00e000 g7: 00000000
o0: 00000001 o1: 00000003 o2: f2f18130 o3: e00e1050 o4:
00000000 o5:
00000002 sp
: ff00fc70 o7: f0141dd8
l0: 0000000d l1: f2f18000 l2: f018fde0 l3: f018fc00 l4:
00000001 l5:
f017f800 l6

A few more details: I've tried both Red Hat kernel source RPMs and
kernel source straight from, er, the source (ftp.??.kernel.org) with
the same results. Also, I'm currently running 2.0.35 with no
problems.

Any help in identifying the culprit/solution would be greatly
appreciated!

--
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Kirk Rafferty          | Protect online privacy,                      (o_
kirk@rafferty.org      | boycott Intel:                               //\_
http://www.rafferty.org|         http://www.bigbrotherinside.org      V_/_
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