scsi_transport_sas: fix BSG ioctl memory corruption

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The end_device and sas_host devices support BSG ioctls, but the
request_queue allocated for them isn't set up to allocate the struct
scsi_request payload. This leads to memory corruption in the call to
scsi_req_init() in bsg_map_hdr(), since it will memset past the end of
the allocated request. Fix it by setting ->cmd_size on the allocated
request_queue.

Fixes: 82ed4db499 ("block: split scsi_request out of struct request")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

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Omar Sandoval 2017-02-21 10:03:50 -08:00 • committed by Jens Axboe

parent cccd9fb9ec

commit bd1599d931

1 changed files with 16 additions and 8 deletions

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drivers/scsi/scsi_transport_sas.c

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