The following commit has been merged into the core/rcu branch of tip: Commit-ID: 4761612ffe3c1655e58f1ef9cf867c6f67d46fe2 Gitweb: https://git.kernel.org/tip/4761612ffe3c1655e58f1ef9cf867c6f67d46fe2 Author: Marco Elver <elver@xxxxxxxxxx> AuthorDate: Thu, 22 Oct 2020 13:45:52 +02:00 Committer: Paul E. McKenney <paulmck@xxxxxxxxxx> CommitterDate: Mon, 02 Nov 2020 17:08:50 -08:00 kcsan: selftest: Ensure that address is at least PAGE_SIZE In preparation of supporting only addresses not within the NULL page, change the selftest to never use addresses that are less than PAGE_SIZE. Reviewed-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Signed-off-by: Marco Elver <elver@xxxxxxxxxx> Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> --- kernel/kcsan/selftest.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c index d98bc20..9014a3a 100644 --- a/kernel/kcsan/selftest.c +++ b/kernel/kcsan/selftest.c @@ -33,6 +33,9 @@ static bool test_encode_decode(void) unsigned long addr; prandom_bytes(&addr, sizeof(addr)); + if (addr < PAGE_SIZE) + addr = PAGE_SIZE; + if (WARN_ON(!check_encodable(addr, size))) return false;
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