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module: tracking: Keep a record of tainted unloaded modules only

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This ensures that no module record/or entry is added to the
unloaded_tainted_modules list if it does not carry a taint.

Reported-by: Alexey Dobriyan <adobriyan@gmail.com>
Fixes: 99bd995655 ("module: Introduce module unload taint tracking")
Signed-off-by: Aaron Tomlin <atomlin@redhat.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Aaron Tomlin 2022-10-07 14:38:12 +01:00 committed by Linus Torvalds
parent 385f4a1019
commit 47cc75aa92
1 changed files with 3 additions and 0 deletions
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3
kernel/module/tracking.c
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@ -22,6 +22,9 @@ int try_add_tainted_module(struct module *mod)
module_assert_mutex_or_preempt();
if (!mod->taints)
goto out;
list_for_each_entry_rcu(mod_taint, &unloaded_tainted_modules, list,
lockdep_is_held(&module_mutex)) {
if (!strcmp(mod_taint->name, mod->name) &&