Messages in this thread | | | From | Kumar Gala <> | Subject | Re: PowerPC: Sleeping function called from invalid context at emulate_instruction() | Date | Wed, 22 Feb 2006 22:22:17 -0600 |
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On Feb 22, 2006, at 2:29 PM, Michael Buesch wrote:
> Hi, > > On a powerPC 32bit, I got the following debugging assertion failure: > > [ 733.209827] Debug: sleeping function called from invalid context > at arch/powerpc/kernel/traps.c:697 > [ 733.210682] in_atomic():0, irqs_disabled():1 > [ 733.211347] Call Trace: > [ 733.211969] [D6023EB0] [C0007F84] show_stack+0x58/0x174 > (unreliable) > [ 733.212765] [D6023EE0] [C0022C34] __might_sleep+0xbc/0xd0 > [ 733.213523] [D6023EF0] [C000D158] program_check_exception > +0x1d8/0x4fc > [ 733.214309] [D6023F40] [C000E744] ret_from_except_full+0x0/0x4c > [ 733.215076] --- Exception: 700 at 0x102a7100 > [ 733.215785] LR = 0xdb9ef04 > > It is caused by the line > if (get_user(instword, (u32 __user *)(regs->nip))) > in arch/powerpc/kernel/traps.c:emulate_instruction() > > I am not sure, if this is an indication for a bug, or just false > alarm. > In case of false alarm, the debugging message should be made quiet > somehow, though.
Paul,
Last time this was brought up we left it wondering why you had made program_check_exception() run with interrupts disabled. Any further ideas on that one?
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