[PATCH] nvme-host: prevent nvme-cli from setting invalid fast_io_fail_tmo values

[Maurizio Lombardi]

Valid fast_io_fail_tmo values are integers >= 0 or -1 (disabled).
Prevent userspace from setting arbitrary negative values.

Signed-off-by: Maurizio Lombardi <mlombard at redhat.com>
---
 drivers/nvme/host/fabrics.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index c5a2b71c5268..282d54117e0a 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -698,6 +698,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
 			if (token >= 0)
 				pr_warn("I/O fail on reconnect controller after %d sec\n",
 					token);
+			else
+				token = -1;
+
 			opts->fast_io_fail_tmo = token;
 			break;
 		case NVMF_OPT_HOSTNQN:
-- 
2.27.0