Hang with isync

Liu Dave-r63238 DaveLiu at freescale.com
Thu Sep 21 14:24:48 EST 2006

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
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 <linas at austin.ibm.com> wrote: 

		On Thu, Sep 21, 2006 at 08:38:13AM +1000, Benjamin
Herrenschmidt wrote:
		> On Wed, 2006-09-20 at 15:31 -0700, Manoj Sharma wrote:
		> > 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.
		The MSR had this or'ed into it, which is setting the
user-mode bit.
		Surely that's wrong. 

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