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kcsan: selftest: Ensure that address is at least PAGE_SIZE

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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@google.com>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Marco Elver 2020-10-22 13:45:52 +02:00 committed by Paul E. McKenney
parent 3650b228f8
commit 4761612ffe
1 changed files with 3 additions and 0 deletions
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kernel/kcsan/selftest.c
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@ -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;