nvmet-rdma: fix bonding failover possible NULL deref

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RDMA_CM_EVENT_ADDR_CHANGE event occur in the case of bonding failover
on normal as well as on listening cm_ids. Hence this event will
immediately trigger a NULL dereference trying to disconnect a queue
for a cm_id that actually belongs to the port.

To fix this we provide a different handler for the listener cm_ids
that will defer a work to disable+(re)enable the port which essentially
destroys and setups another listener cm_id

Reported-by: Alex Lyakas <alex@zadara.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Tested-by: Alex Lyakas <alex@zadara.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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Sagi Grimberg 2020-04-02 08:48:53 -07:00 • committed by Christoph Hellwig

parent f0e656e4f2

commit a032e4f6d6

1 changed files with 119 additions and 56 deletions

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drivers/nvme/target/rdma.c

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