audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
eBPF can end up calling into the audit code from some odd places, and
some of these places don't have @current set properly so we end up
tripping the `WARN_ON_ONCE(!current->mm)` near the top of
`audit_exe_compare()`. While the basic `!current->mm` check is good,
the `WARN_ON_ONCE()` results in some scary console messages so let's
drop that and just do the regular `!current->mm` check to avoid
problems.
Cc: <stable@vger.kernel.org>
Fixes: 47846d5134
("audit: don't take task_lock() in audit_exe_compare() code path")
Reported-by: Artem Savkov <asavkov@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
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@ -531,7 +531,7 @@ int audit_exe_compare(struct task_struct *tsk, struct audit_fsnotify_mark *mark)
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if (tsk != current)
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return 0;
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if (WARN_ON_ONCE(!current->mm))
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if (!current->mm)
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return 0;
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exe_file = get_mm_exe_file(current->mm);
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if (!exe_file)
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