From: Mikael Pettersson <mikpe@csd.uu.se>
To: linux-kernel@vger.kernel.org, rusty@rustcorp.com.au
Subject: 2.6.0-test6 module autoloading and reference counting broken?
Date: Fri, 3 Oct 2003 14:30:52 +0200 [thread overview]
Message-ID: <16253.27644.578089.345998@gargle.gargle.HOWL> (raw)
FYI,
I'm seeing incorrect reference counting behaviour and module
loading semi-failures in 2.6.0-test6.
I have a misc char driver module which announces an alias
via a MODULE_ALIAS("char-major-10-<nnn>") declaration.
The first attempt by user-space to open the device node fails
with ENODEV. However, afterwards the module _is_ loaded and its
use count is 1 even though the user-space open() failed.
Subsequent open()s succeed, but since the reference count is
one too high, I can't unload the module.
If I instead manually insmod or modprobe the module before the
first device node open(), the module's use count is correct and
I can unload it after the last open()ed file goes away.
CONFIG_KMOD is set, module-init-tools is 0.9.14.
I'll keep digging...
/Mikael
next reply other threads:[~2003-10-03 12:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-03 12:30 Mikael Pettersson [this message]
2003-10-10 5:25 ` Rusty Russell
2003-10-11 9:56 Mikael Pettersson
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