linux-kernel - Re: 2.6.33 pagemap endless read loop

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 for Android: free password hash cracker in your pocket

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

Date:	Sun, 10 Jan 2010 13:37:02 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Américo Wang <xiyou.wangcong@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.33 pagemap endless read loop

> Are you sure

I don't know if it's really endless, but it's doing a good emulation
of it if it's not.

> 
> On my 32bit machine, it runs for a long time, but finally exits.

That was on 64bit.

proc01 had accumulated several minutes of CPU time when I stopped it.

> From the document of pagemap, it is the mapping of all the virtual pages
> of a process, on x86-32, it should be 4G/4K = 1024*1024 pages, also

Only the mapped ones surely?

Right now it looks like it dumps all the holes and that obviously
will never finish on 64bit which has 47bits of address space.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
--
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/