random: fix locking for crng_init in crng_reseed()

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crng_init is protected by primary_crng->lock. Therefore, we need
to hold this lock when increasing crng_init to 2. As we shouldn't
hold this lock for too long, only hold it for those parts which
require protection.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

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Dominik Brodowski 2022-02-09 19:57:06 +01:00 • committed by Jason A. Donenfeld

parent 7b5164fb12

commit 7191c628fe

1 changed files with 6 additions and 3 deletions

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drivers/char/random.c

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