Subject: Re: sparc64: simple_lock: lock held
To: None <firstname.lastname@example.org>
From: Juergen Hannken-Illjes <email@example.com>
Date: 12/04/2003 22:27:17
On Thu, Dec 04, 2003 at 01:14:05PM -0800, Andrey Petrov wrote:
> On Thu, Dec 04, 2003 at 09:28:57PM +0100, Juergen Hannken-Illjes wrote:
> > >From todays sources on sparc64 I get:
> > simple_lock: lock held
> > lock: 0x1ac2110, currently at: src/sys/arch/sparc64/sparc64/pmap.c:1851
> > last locked: src/sys/arch/sparc64/sparc64/pmap.c:1851
> > last unlocked: src/sys/arch/sparc64/sparc64/pmap.c:2162
> Can you send your kernel config and provide details
> on load and problem appearence?
> I also wonder if you keep previous kernel sources on which problem
> doesn't happen.
Load was very high, offending process was sshd. I was not able to get a
core dump because of this held simple_lock. Last head of top was:
load averages: 9.19, 8.73, 8.59 19:54:00
52 processes: 1 runnable, 50 sleeping, 1 on processor
CPU states: 2.0% user, 0.0% nice, 8.0% system, 0.8% interrupt, 89.2% idle
Memory: 43M Act, 11M Inact, 2776K Wired, 5416K Exec, 38M File, 155M Free
Swap: 512M Total, 512M Free
Kernel config is:
options DIAGNOSTIC # expensive kernel consistency checks
options DEBUG # expensive debugging checks/support
options FFS_EI # FFS Endian Independent support
makeoptions DEBUG="-g" # compile full symbol table
simple_lock_debugger was set to 1.
Last sources (without this problem) were from ~ Nov 23.
Juergen Hannken-Illjes - firstname.lastname@example.org - TU Braunschweig (Germany)