From: Maurizio Lombardi <mlombard@redhat.com>
Date: Fri, 12 Nov 2021 15:16:12 +0100
Subject: [PATCH] nvme-fabrics: ignore invalid fast_io_fail_tmo values
Git-commit: 8e8aaf512a91ae44d40647a88b51326c7b0a70a8
Patch-mainline: v5.16-rc1
References: git-fixes
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@redhat.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Hannes Reinecke <hare@suse.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:
--
2.29.2