crypto: api - Fix race condition in crypto_spawn_alg

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commit 73669cc556 upstream.

The function crypto_spawn_alg is racy because it drops the lock
before shooting the dying algorithm.  The algorithm could disappear
altogether before we shoot it.

This patch fixes it by moving the shooting into the locked section.

Fixes: 6bfd48096f ("[CRYPTO] api: Added spawns")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Herbert Xu 2019-12-07 22:15:15 +08:00 • committed by Greg Kroah-Hartman

parent 6d8d9b2dd4

commit e92a111263

3 changed files with 6 additions and 14 deletions

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16

crypto/algapi.c

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3

crypto/api.c

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1

crypto/internal.h

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