nvme-tcp: fix a NULL deref when receiving a 0-length r2t PDU

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When the controller sends us a 0-length r2t PDU we should not attempt to
try to set up a h2cdata PDU but rather conclude that this is a buggy
controller (forward progress is not possible) and simply fail it
immediately.

Fixes: 3f2304f8c6 ("nvme-tcp: add NVMe over TCP host driver")
Reported-by: Belanger, Martin <Martin.Belanger@dell.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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Sagi Grimberg 2021-03-15 14:08:11 -07:00 • committed by Christoph Hellwig

parent b94e8cd2e6

commit fd0823f405

1 changed files with 7 additions and 0 deletions

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drivers/nvme/host/tcp.c

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