[Bug 200459] [nvme] Ioctl for passthrough can hang if called during nvme reset.

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200459

            Bug ID: 200459
           Summary: [nvme] Ioctl for passthrough can hang if called during
                    nvme reset.
           Product: Base System
           Version: 10.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: misc
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: oren.berman at pmcs.com

The ioctl for PASSTHROUGH in the nvme driver should return an ERROR if the
controller is in reset state,for example checking the ctrlr->is_resetting bit,
Otherwise the ioctl might hang.

BR
Oren

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