linux-kernel - Re: tty breakage in X (Was: tty vs workqueue oddities)

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, 02 Jun 2011 11:30:27 +0200
From:	Andreas Schwab <schwab@...ux-m68k.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: tty breakage in X (Was: tty vs workqueue oddities)

Benjamin Herrenschmidt <benh@...nel.crashing.org> writes:

> It looks like the patch is causing some major malfunctions of the X
> server for me, possibly related to PTYs. For example, cat'ing a large
> file in a gnome terminal hangs the kernel for -minutes- in a loop of
> what looks like flush_to_ldisc/workqueue code, (some ftrace data in the
> quoted bits further down). 

Btw., do you already have d72bce0 ("rcu: Cure load woes")?  Although
that is about an independent bug, it appears to amplify this issue a
lot.

Andreas.

-- 
Andreas Schwab, schwab@...ux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
--
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/