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-rw-r--r--drivers/nvme/target/auth.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/nvme/target/auth.c b/drivers/nvme/target/auth.c
index 8bc3f431c77f..7897d02c681d 100644
--- a/drivers/nvme/target/auth.c
+++ b/drivers/nvme/target/auth.c
@@ -25,6 +25,18 @@ int nvmet_auth_set_key(struct nvmet_host *host, const char *secret,
unsigned char key_hash;
char *dhchap_secret;
+ if (!strlen(secret)) {
+ if (set_ctrl) {
+ kfree(host->dhchap_ctrl_secret);
+ host->dhchap_ctrl_secret = NULL;
+ host->dhchap_ctrl_key_hash = 0;
+ } else {
+ kfree(host->dhchap_secret);
+ host->dhchap_secret = NULL;
+ host->dhchap_key_hash = 0;
+ }
+ return 0;
+ }
if (sscanf(secret, "DHHC-1:%hhd:%*s", &key_hash) != 1)
return -EINVAL;
if (key_hash > 3) {