7414dde0a6
In certain scenarios (target kill with live IO) scsi TMFs may race with iser RDMA teardown, which might cause NULL dereference on iser IB device handle (which might have been freed). In this case we take a conditional lock for TMFs and check the connection state (avoid introducing lock contention in the IO path). This is indeed best effort approach, but sufficient to survive multi targets sudden death while heavy IO is inflight. While we are on it, add a nice kernel-doc style documentation. Reported-by: Ariel Nahum <arieln@mellanox.com> Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com> |
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