This is a note to let you know that I've just added the patch titled
module: Call module notifier on failure after complete_formation()
to the 4.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
module-call-module-notifier-on-failure-after-complete_formation.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 37815bf866ab6722a47550f8d25ad3f1a16a680c Mon Sep 17 00:00:00 2001
From: Steven Rostedt <rostedt@xxxxxxxxxxx>
Date: Sat, 9 May 2015 03:06:23 +0930
Subject: module: Call module notifier on failure after complete_formation()
From: Steven Rostedt <rostedt@xxxxxxxxxxx>
commit 37815bf866ab6722a47550f8d25ad3f1a16a680c upstream.
The module notifier call chain for MODULE_STATE_COMING was moved up before
the parsing of args, into the complete_formation() call. But if the module failed
to load after that, the notifier call chain for MODULE_STATE_GOING was
never called and that prevented the users of those call chains from
cleaning up anything that was allocated.
Link: http://lkml.kernel.org/r/554C52B9.9060700@xxxxxxxxx
Reported-by: Pontus Fuchs <pontus.fuchs@xxxxxxxxx>
Fixes: 4982223e51e8 "module: set nx before marking module MODULE_STATE_COMING"
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
kernel/module.c | 3 +++
1 file changed, 3 insertions(+)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3366,6 +3366,9 @@ static int load_module(struct load_info
module_bug_cleanup(mod);
mutex_unlock(&module_mutex);
+ blocking_notifier_call_chain(&module_notify_list,
+ MODULE_STATE_GOING, mod);
+
/* we can't deallocate the module until we clear memory protection */
unset_module_init_ro_nx(mod);
unset_module_core_ro_nx(mod);
Patches currently in stable-queue which might be from rostedt@xxxxxxxxxxx are
queue-4.0/module-call-module-notifier-on-failure-after-complete_formation.patch
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