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| author | Ming Lei <ming.lei@redhat.com> | 2022-03-08 08:32:18 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-03-09 01:57:19 +0100 |
| commit | 4f481208749a22d3570073e629dbc27d7d27c8da (patch) | |
| tree | 8df524f2cca05a364031383731151d6b9b8775cc /block/bdev.c | |
| parent | block: mtip32xx: don't touch q->queue_hw_ctx (diff) | |
| download | linux-4f481208749a22d3570073e629dbc27d7d27c8da.tar.xz linux-4f481208749a22d3570073e629dbc27d7d27c8da.zip | |
blk-mq: prepare for implementing hctx table via xarray
It is inevitable to cause use-after-free on q->queue_hw_ctx between
queue_for_each_hw_ctx() and blk_mq_update_nr_hw_queues(). And converting
to xarray can fix the uaf, meantime code gets cleaner.
Prepare for converting q->queue_hctx_ctx into xarray, one thing is that
xa_for_each() can only accept 'unsigned long' as index, so changes type
of hctx index of queue_for_each_hw_ctx() into 'unsigned long'.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220308073219.91173-6-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bdev.c')
0 files changed, 0 insertions, 0 deletions