linux-kernel - [PATCH] (re)register_binfmt returns with -EBUSY

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Message-ID: <416aa1ad0704020554u54ec3720oe99eba180ffa11eb@mail.gmail.com>
Date:	Mon, 2 Apr 2007 18:24:15 +0530
From:	"kalash nainwal" <kalash.nainwal@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] (re)register_binfmt returns with -EBUSY

When a binary format is unregistered and re-registered,
register_binfmt fails with -EBUSY. The reason is that
unregister_binfmt does not set fmt->next to NULL, and seeing
(fmt->next != NULL), register_binfmt fails with -EBUSY.

One can find his way around by explicitly setting fmt->next to NULL
after unregistering, but that is kind of unclean (one should better be
using only the interfaces, and not the interal members, isn't it?)

Attached one-liner can fix it (for 2.6.20).

Regards,
-Kalash

Signed-off-by: Kalash Nainwal <kalash.nainwal@...il.com>

Download attachment "lnx_binfmt.patch" of type "application/octet-stream" (330 bytes)