crypto: af_alg - Use bh_lock_sock in sk_destruct

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commit 37f96694cf upstream.

As af_alg_release_parent may be called from BH context (most notably
due to an async request that only completes after socket closure,
or as reported here because of an RCU-delayed sk_destruct call), we
must use bh_lock_sock instead of lock_sock.

Reported-by: syzbot+c2f1558d49e25cc36e5e@syzkaller.appspotmail.com
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: c840ac6af3 ("crypto: af_alg - Disallow bind/setkey/...")
Cc: <stable@vger.kernel.org>
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 2019-12-05 13:45:05 +08:00 • committed by Greg Kroah-Hartman

parent 8e2812b6c9

commit 31d8141f70

1 changed files with 4 additions and 2 deletions

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crypto/af_alg.c

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