The patch titled
driver core: refcounting fix
has been added to the -mm tree. Its filename is
driver-core-refcounting-fix.patch
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See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
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------------------------------------------------------
Subject: driver core: refcounting fix
From: Mike Galbraith <efault@xxxxxx>
Fix a reference counting bug exposed by commit
725522b5453dd680412f2b6463a988e4fd148757. If driver.mod_name exists, we
take a reference in module_add_driver(), and never release it. Undo that
reference in module_remove_driver().
Signed-off-by: Mike Galbraith <efault@xxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/module.c | 6 ++++++
1 files changed, 6 insertions(+)
diff -puN kernel/module.c~driver-core-refcounting-fix kernel/module.c
--- a/kernel/module.c~driver-core-refcounting-fix
+++ a/kernel/module.c
@@ -2425,6 +2425,12 @@ void module_remove_driver(struct device_
kfree(driver_name);
}
}
+ /*
+ * Undo the additional reference we added in module_add_driver()
+ * via kset_find_obj()
+ */
+ if (drv->mod_name)
+ kobject_put(&drv->kobj);
}
EXPORT_SYMBOL(module_remove_driver);
#endif
_
Patches currently in -mm which might be from efault@xxxxxx are
driver-core-refcounting-fix.patch
readahead-call-scheme.patch
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