Roland Dreier 0a34e4668c nvme: Don't use a stack buffer for keep-alive command ...

In nvme_keep_alive() we pass a request with a pointer to an NVMe command on
the stack into blk_execute_rq_nowait().  However, the block layer doesn't
guarantee that the request is fully queued before blk_execute_rq_nowait()
returns.  If not, and the request is queued after nvme_keep_alive() returns,
then we'll end up using stack memory that might have been overwritten to
form the NVMe command we pass to hardware.

Fix this by keeping a special command struct in the nvme_ctrl struct right
next to the delayed work struct used for keep-alives.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>

2018-02-12 22:18:14 +02:00

..

host

nvme: Don't use a stack buffer for keep-alive command

2018-02-12 22:18:14 +02:00

target

Merge branch 'for-4.16/block' of git://git.kernel.dk/linux-block

2018-01-29 11:51:49 -08:00

Kconfig

nvme: use menu Kconfig interface

2017-10-04 09:43:57 +02:00

Makefile

…