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    Subject[PATCH 6.0 660/862] module: tracking: Keep a record of tainted unloaded modules only
    Date
    From: Aaron Tomlin <atomlin@redhat.com>

    [ Upstream commit 47cc75aa92837a9d3f15157d6272ff285585d75d ]

    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: 99bd9956551b ("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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    kernel/module/tracking.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/kernel/module/tracking.c b/kernel/module/tracking.c
    index 7f8133044d09..af52cabfe632 100644
    --- a/kernel/module/tracking.c
    +++ b/kernel/module/tracking.c
    @@ -21,6 +21,9 @@ 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) &&
    --
    2.35.1


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