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kernel/module.c: Free lock-classes if parse_args failed

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parse_args call module parameters' .set handlers, which may use locks defined in the module.
So, these classes should be freed in case parse_args returns error(e.g. due to incorrect parameter passed).

Signed-off-by: Andrey Tsyvarev <tsyvarev@ispras.ru>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Andrey Tsyvarev 2015-02-06 15:09:57 +10:30 committed by Rusty Russell
parent 5d8591bc0f
commit de96d79f34
1 changed files with 3 additions and 0 deletions
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3
kernel/module.c
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@ -3356,6 +3356,9 @@ static int load_module(struct load_info *info, const char __user *uargs,
module_bug_cleanup(mod);
mutex_unlock(&module_mutex);
/* Free lock-classes: */
lockdep_free_key_range(mod->module_core, mod->core_size);
/* we can't deallocate the module until we clear memory protection */
unset_module_init_ro_nx(mod);
unset_module_core_ro_nx(mod);