From: Gerd Knorr <kraxel@bytesex.org>
To: Hugh Dickins <hugh@veritas.com>
Cc: Andrew Morton <akpm@zip.com.au>,
Andrea Arcangeli <andrea@suse.de>,
Rik van Riel <riel@conectiva.com.br>,
"David S. Miller" <davem@redhat.com>,
Benjamin LaHaise <bcrl@redhat.com>,
Marcelo Tosatti <marcelo@conectiva.com.br>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] __free_pages_ok oops
Date: Sat, 9 Feb 2002 15:14:15 +0100 [thread overview]
Message-ID: <20020209151414.A18937@bytesex.org> (raw)
In-Reply-To: <3C630D5D.CD66795@zip.com.au> <Pine.LNX.4.21.0202081649120.1497-100000@localhost.localdomain>
In-Reply-To: <Pine.LNX.4.21.0202081649120.1497-100000@localhost.localdomain>
> and Gerd Knorr's report (extracts below) implies that his bttv driver
> was calling unmap_kiobuf at interrupt time. Is that right, Gerd?
Yes.
> encourage him to unmap at interrupt time). Now maybe Gerd's code is
> wrong anyway: a quick look suggests it may also vfree there, which
> would be wrong at interrupt time.
vfree() isn't allowed? I know vmalloc() isn't because it might sleep
while waiting for the VM getting a few free pages. Why vfree isn't
allowed? I can't see why freeing ressources is a problem ...
Is somewhere a list of things which are allowed from irq context and
which are not?
Gerd
--
#define ENOCLUE 125 /* userland programmer induced race condition */
next prev parent reply other threads:[~2002-02-09 15:31 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-06 19:06 [PATCH] __free_pages_ok oops Hugh Dickins
2002-02-06 19:47 ` Andrew Morton
2002-02-06 20:15 ` Hugh Dickins
2002-02-06 21:11 ` Andrew Morton
2002-02-07 20:31 ` Manfred Spraul
2002-02-07 5:09 ` Benjamin LaHaise
2002-02-07 5:47 ` Andrew Morton
2002-02-07 5:55 ` David S. Miller
2002-02-07 6:19 ` Andrew Morton
2002-02-07 6:49 ` David S. Miller
2002-02-07 7:07 ` Andrew Morton
2002-02-07 11:52 ` Hugh Dickins
2002-02-07 12:34 ` Rik van Riel
2002-02-07 12:37 ` David S. Miller
2002-02-07 12:44 ` Rik van Riel
2002-02-07 13:19 ` Hugh Dickins
2002-02-07 13:27 ` Rik van Riel
2002-02-07 13:55 ` Daniel Phillips
2002-02-07 14:28 ` Hugh Dickins
2002-02-07 14:56 ` Rik van Riel
2002-02-07 20:21 ` Hugh Dickins
2002-02-07 20:58 ` Andrea Arcangeli
2002-02-07 21:09 ` Andrew Morton
2002-02-07 22:18 ` Andrea Arcangeli
2002-02-07 22:31 ` Andrew Morton
2002-02-07 23:09 ` Andrea Arcangeli
2002-02-07 23:27 ` Andrew Morton
2002-02-08 17:46 ` Hugh Dickins
2002-02-09 14:14 ` Gerd Knorr [this message]
2002-02-09 15:47 ` arjan
2002-02-09 14:33 ` Benjamin LaHaise
2002-02-12 20:19 ` Hugh Dickins
2002-02-13 18:52 ` Marcelo Tosatti
2002-02-14 10:47 ` Hugh Dickins
2002-02-14 11:10 ` Gerd Knorr
2002-02-14 13:10 ` Andrea Arcangeli
2002-02-14 14:01 ` Hugh Dickins
2002-02-14 15:17 ` Andrea Arcangeli
2002-02-14 16:27 ` Linus Torvalds
2002-02-25 18:32 ` Benjamin LaHaise
2002-02-25 19:35 ` Linus Torvalds
2002-02-07 9:48 ` Benjamin LaHaise
-- strict thread matches above, loose matches on Subject: below --
2002-02-09 8:52 alad
2002-02-09 10:46 ` Hugh Dickins
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