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| author |   Junichi Nomura <j-nomura@ce.jp.nec.com> | 2015-10-14 05:02:15 +0000 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2015-10-15 08:45:58 -0600 |
| commit | f42d79ab67322e51b92dd7aa965e310c71352a64 (patch) | |
| tree | 33b6533d2b7c96502f73d34910bb0f34ec4e0bd7 /include/linux/backing-dev.h | |
| parent | nvme: fix 32-bit build warning (diff) | |
| download | wireguard-linux-f42d79ab67322e51b92dd7aa965e310c71352a64.tar.xz wireguard-linux-f42d79ab67322e51b92dd7aa965e310c71352a64.zip | |
blk-mq: fix use-after-free in blk_mq_free_tag_set()
tags is freed in blk_mq_free_rq_map() and should not be used after that.
The problem doesn't manifest if CONFIG_CPUMASK_OFFSTACK is false because
free_cpumask_var() is nop.
tags->cpumask is allocated in blk_mq_init_tags() so it's natural to
free cpumask in its counter part, blk_mq_free_tags().
Fixes: f26cdc8536ad ("blk-mq: Shared tag enhancements")
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Keith Busch <keith.busch@intel.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/backing-dev.h')
0 files changed, 0 insertions, 0 deletions