[parisc-linux] [BUG] SysRQ H kills the machine

[Joel Soete]

> On Mon, 2006-07-24 at 00:01 -0400, Thibaut VARENE wrote:
> > Hi pa-ckers
> > 
> > quick brain dump before going to bed:
> > 2.6.18-rc1-pa3
> > boot init=/bin/sh -- machine is alive
> > issue a sysrq h (help) -- machine is dead
> > 
mmm is there a dpkg containing this 'sysrq' cmd?

> > happened to me on parisc and probably ia64 (have to double check the latter).
> 
> This is a known and incredibly annoying bug:  serial console is broken
> for sysrq.  Alan Cox is currently trying to fix it, I believe.
> 
Is it this related:
--- snip ---
Author: Andrew Morton <akpm at osdl.org>
Date:   Fri Jun 30 02:29:59 2006 -0700

    [SERIAL] 8250: sysrq deadlock fix
    
    Fix http://bugzilla.kernel.org/show_bug.cgi?id=6716
    
    Doing a sysrq over a serial line into an SMP machine presently deadlocks.
    
    Signed-off-by: Andrew Morton <akpm at osdl.org>
    Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
--- snip ---

(ChangeLog-2.6.18-rc2)

if yes I tested on my n4k but unfortunately doesn't help for the smp pb:
after only 1 day and 22h of my stress test it still hanging in dump_stack
(I was hoping it could be the place where things went wrong too ;-( )

Cheers,
    Joel
> James
> 
> 
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