From: Manfred Spraul <manfred@colorfullife.com>
To: Christian Robottom Reis <kiko@async.com.br>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ps -ax hang with Mozilla in 2.4.9
Date: Sun, 30 Sep 2001 22:44:50 +0200 [thread overview]
Message-ID: <3BB78442.A25BC8A5@colorfullife.com> (raw)
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>
> > > Just wondering if anybody has had moz hanging on them and hanging
> > > 'ps -ax'
> > > (which means /proc/kmem reading is hung, IIRC)?
> >
> > Modern Linux "ps" does not use /proc/kmem. Do a "strace ps" to see.
> > Maybe /proc/12345/stat or /proc/12345/status is hanging.
>
> Thanks; if I can get this to be reproduced again I'll try. If read() on
> stat or status is hanging, something is very wrong, though, right?
Probably you ran into the bug Ulrich Weigand found:
access_process_vm can deadlock, especially with multithreaded apps.
Access_process_vm is used by /proc/*/cmdline.
It's fixed in 2.4.10.
--
Manfred
next reply other threads:[~2001-09-30 20:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-30 20:44 Manfred Spraul [this message]
[not found] <200109190322.f8J3MsG263115@saturn.cs.uml.edu>
2001-09-30 20:04 ` Christian Robottom Reis
-- strict thread matches above, loose matches on Subject: below --
2001-09-03 21:01 Christian Robottom Reis
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