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From: andrewm@uow.edu.au (Andrew Morton)
To: news-innominate.list.linux.kernel@innominate.de
Subject: Re: test12-pre6
Date: 6 Dec 2000 13:04:26 +0100	[thread overview]
Message-ID: <3A2E2C16.80AF82BB@uow.edu.au> (raw)
In-Reply-To: <Pine.LNX.4.10.10012052318270.5786-100000@penguin.transmeta.com> <20001206064732.A6542@animx.eu.org>

Wakko Warner wrote:
> 
> >  - pre6:
> >     - Andrew Morton: exec_usermodehelper fixes
> 
> pre4 oopsed all over the place on my alpha with modules and autoloading
> turned on as soon as it mounted / and freed unused memory.  I take it this
> was seen on i386 as well?

No...  The problems showed themselves a little more subtly than that,
although in the pre5 version there was potential for schedule_task tasks to
be queued before the kernel thread which handles them was started.

This shouldn't normally be a problem, but it becomes a fatal problem if
someone tries to schedule a task and then synchronously waits
for it to complete, as the new exec_usermodehelper does.

This change didn't affect module loading per-se.  But the
kernel does try to run /sbin/hotplug from deep within sys_insert_module
and sys_delete_module, so they're related.

> Will try pre6.

Please.

-

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  reply	other threads:[~2000-12-06 12:35 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-12-06  7:25 test12-pre6 Linus Torvalds
2000-12-06  7:50 ` test12-pre6 Alexander Viro
2000-12-06  7:54 ` [PATCH] test12-pre6 Alexander Viro
2000-12-06  8:03 ` Alexander Viro
2000-12-06  8:06 ` Alexander Viro
2000-12-06  8:26   ` Tigran Aivazian
2000-12-06  8:38     ` Tigran Aivazian
2000-12-06  8:56       ` Tigran Aivazian
2000-12-06  9:07         ` Alexander Viro
2000-12-06  9:29           ` Tigran Aivazian
2000-12-06  8:11 ` Alexander Viro
2000-12-06 11:47 ` test12-pre6 Wakko Warner
2000-12-06 12:04   ` Andrew Morton [this message]
2000-12-07  1:43     ` test12-pre6 Wakko Warner
2000-12-06 13:06 ` test12-pre6 Tobias Ringstrom
2000-12-06 13:29   ` test12-pre6 Miles Lane
2000-12-06 18:08 ` test12-pre6 Erik Mouw
2000-12-06 18:38   ` test12-pre6 Linus Torvalds
2000-12-06 19:08     ` test12-pre6 Erik Mouw
2000-12-06 19:38       ` test12-pre6 Linus Torvalds
2000-12-06 20:09         ` test12-pre6 Erik Mouw
2000-12-06 21:06           ` test12-pre6 Jeff Garzik
2000-12-06 22:57             ` test12-pre6 Miles Lane
2000-12-06 23:10               ` test12-pre6 Johannes Erdfelt
2000-12-06 23:13               ` test12-pre6 Jeff Garzik
2000-12-06 23:17                 ` test12-pre6 Miles Lane
2000-12-07  0:05           ` test12-pre6 Miles Lane
  -- strict thread matches above, loose matches on Subject: below --
2000-12-07  1:30 test12-pre6 Dunlap, Randy

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