linux-kernel - Re: sparc64 WARNING: at mm/mmap.c:2757 exit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 17 Apr 2014 01:22:17 +0300 (EEST)
From:	mroos@...ux.ee
To:	David Miller <davem@...emloft.net>
cc:	aaro.koskinen@....fi, sparclinux@...r.kernel.org,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	hughd@...gle.com
Subject: Re: sparc64 WARNING: at mm/mmap.c:2757 exit_mmap+0x13c/0x160()

> > Just for the archives, I got one of these again with 3.14:
> 
> Meelis and Aaro, thanks again for all of your reports.
> 
> After pouring over a lot of the data and auditing some code I'm
> suspecting it's a problem with transparent huge pages.
> 
> One thing you two can do to help me further confirm this is to run
> with THP disabled for a while and see if you still get the log
> messages.

I have snice turned off CONFIG_TRANSPARENT_HUGEPAGE on 3 of 4 servers 
that had this problem (actually most of my sparc64 machines) and the 4th 
has

CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE=y
# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
# CONFIG_HUGETLBFS is not set
# CONFIG_HUGETLB_PAGE is not se

and also has not had this problem since then. All 4 machines have been 
running through most -rc's of every kernel.

-- 
Meelis Roos <mroos@...ux.ee>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/