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Avoid calling rw_destroy() on uninitialized rwlock

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First the function `memset(&key, 0, ...)` but
any call to "goto error;" would call zio_crypt_key_destroy(key) which
calls `rw_destroy()`. The `rw_init()` is moved up to be right after the
memset. This way the rwlock can be released.

The ctx does allocate memory, but that is handled by the memset to 0
and icp skips NULL ptrs.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
Closes #13976
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Jorgen Lundman 2022-10-06 09:07:50 +09:00 committed by GitHub
parent 062d3d056b
commit 4b629d04a5
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1 changed files with 1 additions and 1 deletions
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2
module/os/linux/zfs/zio_crypt.c
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@ -231,6 +231,7 @@ zio_crypt_key_init(uint64_t crypt, zio_crypt_key_t *key)
keydata_len = zio_crypt_table[crypt].ci_keylen;
memset(key, 0, sizeof (zio_crypt_key_t));
rw_init(&key->zk_salt_lock, NULL, RW_DEFAULT, NULL);
/* fill keydata buffers and salt with random data */
ret = random_get_bytes((uint8_t *)&key->zk_guid, sizeof (uint64_t));
@ -282,7 +283,6 @@ zio_crypt_key_init(uint64_t crypt, zio_crypt_key_t *key)
key->zk_crypt = crypt;
key->zk_version = ZIO_CRYPT_KEY_CURRENT_VERSION;
key->zk_salt_count = 0;
rw_init(&key->zk_salt_lock, NULL, RW_DEFAULT, NULL);
return (0);