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From: Duncan Sands <duncan.sands@math.u-psud.fr>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: remove_proc_entry and read_proc
Date: Wed, 31 Jan 2007 11:54:35 +0100	[thread overview]
Message-ID: <200701311154.35929.duncan.sands@math.u-psud.fr> (raw)

Can read_proc still be executing when remove_proc_entry returns?

In my driver [*] I allocate some data and create a proc entry using
create_proc_entry.  My read method reads from my allocated data.  When
shutting down, I call remove_proc_entry and immediately free the data.
If some call to read_proc is still executing at this point then it will
be accessing freed memory.  Can this happen?  I've been rummaging around
in fs/proc to see what prevents it, but didn't find anything yet.

Thanks a lot,

Duncan.

[*] Actually it's the ATM layer that does all this (net/atm); my driver
uses that layer.

             reply	other threads:[~2007-01-31 10:55 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-31 10:54 Duncan Sands [this message]
2007-01-31 18:42 ` remove_proc_entry and read_proc Alexey Dobriyan
2007-01-31 19:26   ` Duncan Sands
2007-02-01 10:15     ` Duncan Sands
2007-02-01 16:09 Alexey Dobriyan
2007-02-02  7:31 ` Duncan Sands
2007-02-05 11:39   ` Alexey Dobriyan
2007-02-05 12:05     ` Duncan Sands

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