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random32: Restore __latent_entropy attribute on net_rand_state

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[ Upstream commit 09a6b0bc3be793ca8cba580b7992d73e9f68f15d ]

Commit f227e3ec3b5c ("random32: update the net random state on interrupt
and activity") broke compilation and was temporarily fixed by Linus in
83bdc7275e62 ("random32: remove net_rand_state from the latent entropy
gcc plugin") by entirely moving net_rand_state out of the things handled
by the latent_entropy GCC plugin.

From what I understand when reading the plugin code, using the
__latent_entropy attribute on a declaration was the wrong part and
simply keeping the __latent_entropy attribute on the variable definition
was the correct fix.

Fixes: 83bdc7275e62 ("random32: remove net_rand_state from the latent entropy gcc plugin")
Acked-by: Willy Tarreau <w@1wt.eu>
Cc: Emese Revfy <re.emese@gmail.com>
Signed-off-by: Thibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thibaut Sautereau 2020-10-02 17:16:11 +02:00 • committed by Greg Kroah-Hartman
commit 1d13c3a500
1 changed files with 1 additions and 1 deletions
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2
lib/random32.c
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@ -48,7 +48,7 @@ static inline void prandom_state_selftest(void)
}
#endif
DEFINE_PER_CPU(struct rnd_state, net_rand_state);
DEFINE_PER_CPU(struct rnd_state, net_rand_state) __latent_entropy;
/**
* prandom_u32_state - seeded pseudo-random number generator.