linux-kernel - Re: [BUG] long freezes on thinkpad t60

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:	Mon, 18 Jun 2007 10:34:57 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	mingo@...e.hu
CC:	cebbert@...hat.com, chris@...ee.ca, linux-kernel@...r.kernel.org,
	tglx@...utronix.de, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, kiran@...lex86.org
Subject: Re: [BUG] long freezes on thinkpad t60

> > > This change causes the memory access of the "easy" spin-loop portion 
> > > to be more agressive: after the REP; NOP we'd not do the 'easy-loop' 
> > > with a simple CMPB, but we'd re-attempt the atomic op.
> > 
> > It looks as if this is going to overflow of the lock counter, no?
> 
> hm, what do you mean? There's no lock counter.

I mean, the repeated calls to decb will pretty soon make lock->slock
wrap around.

Miklos
-
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/