Kernel 2.6.21 BUG?

alupu at verizon.net alupu at verizon.net
Fri Apr 27 18:20:54 PDT 2007


Hi everybody,

686-pc-linux-gnu, kernel 2.6.20.7
libpcap-0.9.4, ppp-2.4.3, net-tools-1.60,
rp-pppoe-3.5, openssl-0.9.7g, ntp-4.2.0

Networking (and indeed the whole system) running smoothly.

PROBLEM
Upgraded to the brand-new 2.6.21.
Everything fine, EXCEPT the system crashes
after connecting to Internet over the DSL line.

SYMPTOM
In one of its simpler manifestations:
1. []$ pppoe-start
   ...
   Connected! 
2. []$ lynx http://www.linuxfromscratch.org
3. At this point the machine hangs with the BSD
   (Black Screen of Death).
   # The frozen screen shows 24 lines:

BUG: at arch/i386/kernel/smp.c:546 smp_call_function()
[<c010d965>] smp_call_function+0x125/0x130
[<........>] ... (Twenty lines of this nature)
[<c0341570>] unknown_bootoption+0x0/0x240
=======================

ATTEMPTS TO FIX THE SITUATION
Switch back to the tried and true 2.6.20.7
Upgrade five software packages to
libpcap-0.9.5, ppp-2.4.4,
rp-pppoe-3.8, openssl-0.9.8e and ntp-4.2.0a
(per BLFS Development procedures).

Unfortunately, on switching to 2.6.21,
THE PROBLEM REAPPEARS.

Any thoughts?
Thanks,
-- Alex



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