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Link: https://github.com/systemd/systemd/pull/39802 Signed-off-by: Daniel Tang --- security/lockdown/lockdown.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c index cf83afa1d879..4ced8c76dc6b 100644 --- a/security/lockdown/lockdown.c +++ b/security/lockdown/lockdown.c @@ -62,9 +62,11 @@ static int lockdown_is_locked_down(enum lockdown_reason what) "Invalid lockdown reason")) return -EPERM; + static volatile unsigned long lockdown_reasons_seen; + static_assert(ARRAY_SIZE(lockdown_reasons) < sizeof(lockdown_reasons_seen) * 8); if (kernel_locked_down >= what) { - if (lockdown_reasons[what]) - pr_notice_ratelimited("Lockdown: %s: %s is restricted; see man kernel_lockdown.7\n", + if (lockdown_reasons[what] && !test_and_set_bit(what, &lockdown_reasons_seen)) + pr_notice("Lockdown: %s: %s is restricted; see man kernel_lockdown.7\n", current->comm, lockdown_reasons[what]); return -EPERM; } -- 2.51.0