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nvme-fabrics: ignore invalid fast_io_fail_tmo values

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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>
This commit is contained in:
Maurizio Lombardi 2021-11-12 15:16:12 +01:00 committed by Christoph Hellwig
parent 5a6254d55e
commit 8e8aaf512a
1 changed files with 3 additions and 0 deletions
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3
drivers/nvme/host/fabrics.c
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@ -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: