Re: sparc64 WARNING: at mm/mmap.c:2757 exit_mmap+0x13c/0x160()

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I tested the merged sparc64 fixes in current git.

V100: with hugetlb, looping git clone still hangs the machine. RED 
state on reboot has changed - before it gave the trace on reboot and 
continued, now it contonues looping with the trace indefinitely, gcc 
4.6.4

Netra X1: works fine with HugeTLB (but no hugetlbfs) and looping git 
clone, gcc 4.6.4.

V440: fails to boot with 3.16 and gcc 4.9.1 (same message as before, in 
fault_in_user_windows+0xe0/0x100). Tried latest git with gcc 4.9.1 but 
it stops after before getting to the previous failure point:
[   77.871887] console [tty0] enabled
[   77.912630] bootconsole [earlyprom0] disabled

T2000: works fine with gcc 4.9.1 and hugetlb, 3.16. Hangs at boot at the 
same point.

U2: looping git clone fails with 3.16, no hugetlb(!!!), gcc 4.6.4;

E420R: works fine with gcc 4.6.4. 3.16, hugetlb, looping git clone; 
fails to boot with current git

E220R: works with gcc 4.6.4, no hugetlb, 3.16. Hangs on boot with 
current git + hugetlb.

Did not test current git more. Will test the patches on top of 3.16 
separately to see if/which one of these is the culprit.

-- 
Meelis Roos (mroos@xxxxxxxx)
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