On 10/09/2013 12:18 PM, David Miller wrote:
From: Gurudas Pai <gurudas.pai@xxxxxxxxxx>
Date: Thu, 03 Oct 2013 19:07:11 -0700
And run echo 1000000 > /proc/sys/vm/nr_hugepages couple of
times.
You're running the machine out of memory and stressing the
setup path of the hugepage subsystem a lot.
This looks entirely different from the other crash/lockup,
in that there it looked like a cpu died with interrupts
disabled and thus wasn't responding even to cross calls.
This really isn't in a format I can look into, sorry.
Following change fixes the issue for me, (this was removed by
759496ba6407c6994d6a5ce3a5e74937d7816208), not very sure how.
diff -Nrup arch/sparc/mm/fault_64.c /tmp/fault_64.c
--- arch/sparc/mm/fault_64.c 2013-10-22 20:10:04.302411223 -0400
+++ /tmp/fault_64.c 2013-10-22 20:10:19.593410899 -0400
@@ -427,6 +427,7 @@ good_area:
goto bad_area;
}
+ flags |= ((fault_code & FAULT_CODE_WRITE) ? FAULT_FLAG_WRITE : 0);
fault = handle_mm_fault(mm, vma, address, flags);
if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
Thanks,
-Guru
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