Messages in this thread | | | Subject | Re: 2.6.13-rc3-mm3 | From | Richard Purdie <> | Date | Sun, 07 Aug 2005 14:44:35 +0100 |
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On Fri, 2005-08-05 at 08:17 -0700, Christoph Lameter wrote: > On Thu, 4 Aug 2005, Richard Purdie wrote: > > > > We know the the failure case can be identified by the > > cmpxchg_fail_flag_update condition being met. Can you provide me with a > > patch to dump useful debugging information when that occurs? > > Well yes simply print out the information available in that context. > > + printk(KERN_CRIT "cmpxchg fail mm=%p vma=%p addr=%lx write=%d ptep=%p pmd=%p entry=%lx new=%lx\n", > + mm, vma, address, write_access, pte, pmd, pte_val(entry), pte_val(new_entry));
Ok, this results in an infinite loop of one message with no change to the numbers:
cmpxchg fail mm=c3455ae0 vma=c355517c addr=4025f000 write=2048 ptep=c2f0597c pmd=c2b79008 entry=88000f7 new=8800077
Richard
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