Re: Hang with isync

Dave, watchdog timeout is around one second and no cpu activity for that
long is something wrong. Is it ok to disable it to hide the problem lying
somewhere else? Do you think it can be because of sync-isync
instructions and moving to 2.6 might resolve it?


On 9/20/06, Liu Dave-r63238 [off-list ref] wrote:

No MSR is 00029030 and user mode bit is not set here.

I had missed it in the prev mail:

NIP: C0005DA4 XER: 20000000 LR: C0004FE4 SP: C01F3000 REGS: c01eff30
TRAP: 1020    Not tainted
MSR: 00029030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
TASK = c01f1080[0] 'swapper' Last syscall: 120
last math 00000000 last altivec 00000000
PLB0: bear= 0x08000000 acr=   0xbb000000 besr=  0x00000000

Dave>I notice that MSR and TRAP, MSR is 00029030- the critical interrupt
enable.
Dave>TRAP is 1020. --WatchDog timer exception is happening
Dave>You can disable the MSR[CE] bit to no critical exception or disable
the WD timer



On 9/20/06, Linas Vepstas [off-list ref] wrote:

quoted

On Thu, Sep 21, 2006 at 08:38:13AM +1000, Benjamin Herrenschmidt wrote:

quoted

On Wed, 2006-09-20 at 15:31 -0700, Manoj Sharma wrote:

quoted

This is the stack trace.

Registers:
GPR00: 00069030

This is the MSR and it has the user-mode bit set, which is surely wrong.
This is not how one gets to user space.

00048000

The MSR had this or'ed into it, which is setting the user-mode bit.
Surely that's wrong.

--linas