2079699c10
If a task is holding a reference to a namespace on a removed controller, the head will not be released. If the same controller is added again later, its namespaces may not be successfully added. Instead, the user will see kernel message "Duplicate IDs for nsid <X>". This patch fixes that by skipping heads that don't have namespaces when considering if a new namespace is safe to add. Reported-by: Alex Gagniuc <Alex_Gagniuc@Dellteam.com> Cc: stable@vger.kernel.org Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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