linux-kernel - Re: [BUG 3.0.0-rc1] ksm: NULL pointer dereference in ksm_do

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]

Message-ID: <1434914877.378198.1307076264791.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com>
Date:	Fri, 3 Jun 2011 00:44:24 -0400 (EDT)
From:	CAI Qian <caiqian@...hat.com>
To:	Chris Wright <chrisw@...s-sol.org>
Cc:	Andrea Righi <andrea@...terlinux.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mel@....ul.ie>,
	Izik Eidus <ieidus@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [BUG 3.0.0-rc1] ksm: NULL pointer dereference in ksm_do_scan()



----- Original Message -----
> * CAI Qian (caiqian@...hat.com) wrote:
> > madvise(0x2210000, 4096, 0xc /* MADV_??? */) = 0
> > --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> 
> Right, that's just what the program is trying to do, segfault.
> 
> > +++ killed by SIGSEGV (core dumped) +++
> > Segmentation fault (core dumped)
> >
> > Did I miss anything?
> 
> I found it works but not 100% of the time.
> 
> So I just run the bug in a loop.
Still no luck here.
# while :; do ./test ; done
Segmentation fault (core dumped)
Segmentation fault (core dumped)
Segmentation fault (core dumped)
Segmentation fault (core dumped)
...

I can't really see what different with the hardware
here. It is only a NUMA server system.
--
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/