[PATCH v5 4/9] crash_dump: Free temporary dm-crypt keys_header buffer in kdump kernel

Although we expect the system to reboot immediately after vmcore dumping
is finished, it's still good to free the temporary keys_header buffer.

Fixes: 62f17d9df692 ("crash_dump: retrieve dm crypt keys in kdump kernel")
Reported-by: Sourabh Jain <redacted>
Reviewed-by: Sourabh Jain <redacted>
Signed-off-by: Coiby Xu <redacted>
---
 kernel/crash_dump_dm_crypt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/crash_dump_dm_crypt.c b/kernel/crash_dump_dm_crypt.c
index 580534d43b66..ff6055a97a4b 100644
--- a/kernel/crash_dump_dm_crypt.c
+++ b/kernel/crash_dump_dm_crypt.c

@@ -118,6 +118,7 @@ static int get_keys_from_kdump_reserved_memory(void)
 
 static int restore_dm_crypt_keys_to_thread_keyring(void)
 {
+	struct keys_header *keys_header __free(kfree_sensitive) = NULL;
 	struct dm_crypt_key *key;
 	size_t keys_header_size;
 	key_ref_t keyring_ref;

-- 
2.55.0