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(parent: b94e8cd) | patch
nvme-tcp: fix a NULL deref when receiving a 0-length r2t PDU
authorSagi Grimberg <sagi@grimberg.me>
Mon, 15 Mar 2021 21:08:11 +0000 (14:08 -0700)
committerChristoph Hellwig <hch@lst.de>
Thu, 18 Mar 2021 04:39:01 +0000 (05:39 +0100)
commitfd0823f405090f9f410fc3e3ff7efb52e7b486fa
treef1449dc8e8b3931ecc45327c6942d7f1c683e2d9tree | snapshot
parentb94e8cd2e6a94fc7563529ddc82726a7e77e04decommit | diff
nvme-tcp: fix a NULL deref when receiving a 0-length r2t PDU

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: 3f2304f8c6d6 ("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>
drivers/nvme/host/tcp.c diff | blob | history
Domain: System / Kernel;