linux-kernel - Re: 2.6.23-rc1: BUG_ON in kmap_atomic

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: <20070723210153.GA5753@martell.zuzino.mipt.ru>
Date:	Tue, 24 Jul 2007 01:01:53 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot()

On Tue, Jul 24, 2007 at 12:40:45AM +0400, Alexey Dobriyan wrote:
> > I had more complete info: http://article.gmane.org/gmane.linux.network/66966
> > 
> > You're using DEBUG_PAGEALLOC, but I was not, so I think we can rule that out.
> > 
> > I haven't worked out where that kmap_atomic() call is coming from yet. 
> > Both traces point up into the page allocator, but I _think_ that's stack
> > gunk.
> 
> Ahh, you suspect networking.
> 
> Here, setup is 2 cheap-ass 100Mb realtek 8139 NICs, one to campus network
> receiving ~20 junk packets per second, one gathering netconsole output
> and ssh to it, no conntracks and fancy stuff.
> 
> [reboots with cables physically unplugged]

OK, I run gdb recompile, cat(1) every file in /usr/portage (shitload of
small files) with both cables unplugged. It all went fine for ~5 minutes
after that it crashed exactly same way after 10 secs after plugging one
of them.

-
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/