linux-kernel - Re: runaway loop modprobe binfmt-0000

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Message-Id: <20070105164249.f79630a0.akpm@osdl.org>
Date:	Fri, 5 Jan 2007 16:42:49 -0800
From:	Andrew Morton <akpm@...l.org>
To:	"Tom Lanyon" <tomlanyon@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: runaway loop modprobe binfmt-0000

On Sat, 6 Jan 2007 09:43:14 +1030
"Tom Lanyon" <tomlanyon@...il.com> wrote:

> How can I discover
> what is trying to load binfmt-0000 and why is it looping?

Start with this, I guess..

--- a/kernel/kmod.c~a
+++ a/kernel/kmod.c
@@ -98,10 +98,12 @@ int request_module(const char *fmt, ...)
 	atomic_inc(&kmod_concurrent);
 	if (atomic_read(&kmod_concurrent) > max_modprobes) {
 		/* We may be blaming an innocent here, but unlikely */
-		if (kmod_loop_msg++ < 5)
+		if (kmod_loop_msg++ < 5) {
 			printk(KERN_ERR
 			       "request_module: runaway loop modprobe %s\n",
 			       module_name);
+			dump_stack();
+		}
 		atomic_dec(&kmod_concurrent);
 		return -ENOMEM;
 	}
_

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