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Ubuntu-focal-kernel/drivers/nvme
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Maurizio Lombardi 8f88928d50 nvmet-tcp: fix kernel crash if commands allocation fails 
BugLink: https://bugs.launchpad.net/bugs/2081278

[ Upstream commit 5572a55a6f830ee3f3a994b6b962a5c327d28cb3 ]

If the commands allocation fails in nvmet_tcp_alloc_cmds()
the kernel crashes in nvmet_tcp_release_queue_work() because of
a NULL pointer dereference.

  nvmet: failed to install queue 0 cntlid 1 ret 6
  Unable to handle kernel NULL pointer dereference at
         virtual address 0000000000000008

Fix the bug by setting queue->nr_cmds to zero in case
nvmet_tcp_alloc_cmd() fails.

Fixes: 872d26a391 ("nvmet-tcp: add NVMe over TCP target driver")
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
 		2024-09-27 10:50:34 +02:00
..
host nvme: avoid double free special payload 2024-09-27 10:50:29 +02:00
target nvmet-tcp: fix kernel crash if commands allocation fails 2024-09-27 10:50:34 +02:00
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