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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2023-08-03 17:59:28 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-08-11 19:19:27 +0800 |
| commit | 9ae4577bc077a7e32c3c7d442c95bc76865c0f17 (patch) | |
| tree | fb6106fb234c6e9d0a301d68572369c2b003db04 /include/crypto/algapi.h | |
| parent | 7999b615fd18e2c2d1aa540b930341c494c0c3e7 (diff) | |
| download | linux-9ae4577bc077a7e32c3c7d442c95bc76865c0f17.tar.gz linux-9ae4577bc077a7e32c3c7d442c95bc76865c0f17.tar.bz2 linux-9ae4577bc077a7e32c3c7d442c95bc76865c0f17.zip | |
crypto: api - Use work queue in crypto_destroy_instance
The function crypto_drop_spawn expects to be called in process
context. However, when an instance is unregistered while it still
has active users, the last user may cause the instance to be freed
in atomic context.
Fix this by delaying the freeing to a work queue.
Fixes: 6bfd48096ff8 ("[CRYPTO] api: Added spawns")
Reported-by: Florent Revest <revest@chromium.org>
Reported-by: syzbot+d769eed29cc42d75e2a3@syzkaller.appspotmail.com
Reported-by: syzbot+610ec0671f51e838436e@syzkaller.appspotmail.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Florent Revest <revest@chromium.org>
Acked-by: Florent Revest <revest@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto/algapi.h')
| -rw-r--r-- | include/crypto/algapi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 6156161b181f..ca86f4c6ba43 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -12,6 +12,7 @@ #include <linux/cache.h> #include <linux/crypto.h> #include <linux/types.h> +#include <linux/workqueue.h> /* * Maximum values for blocksize and alignmask, used to allocate @@ -82,6 +83,8 @@ struct crypto_instance { struct crypto_spawn *spawns; }; + struct work_struct free_work; + void *__ctx[] CRYPTO_MINALIGN_ATTR; }; |