path: root/drivers/md/dm-integrity.c
diff options
authorMike Snitzer <snitzer@redhat.com>2020-01-27 14:07:23 -0500
committerMike Snitzer <snitzer@redhat.com>2020-01-27 14:52:36 -0500
commit47ace7e012b9f7ad71d43ac9063d335ea3d6820b (patch)
tree2b45907e46c5531c2fb824a68ad4aa5b63ce0f5c /drivers/md/dm-integrity.c
parentdm writecache: improve performance of large linear writes on SSDs (diff)
dm: fix potential for q->make_request_fn NULL pointer
Move blk_queue_make_request() to dm.c:alloc_dev() so that q->make_request_fn is never NULL during the lifetime of a DM device (even one that is created without a DM table). Otherwise generic_make_request() will crash simply by doing: dmsetup create -n test mount /dev/dm-N /mnt While at it, move ->congested_data initialization out of dm.c:alloc_dev() and into the bio-based specific init method. Reported-by: Stefan Bader <stefan.bader@canonical.com> BugLink: https://bugs.launchpad.net/bugs/1860231 Fixes: ff36ab34583a ("dm: remove request-based logic from make_request_fn wrapper") Depends-on: c12c9a3c3860c ("dm: various cleanups to md->queue initialization code") Cc: stable@vger.kernel.org Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-integrity.c')
0 files changed, 0 insertions, 0 deletions