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| author |   Ming Lei <ming.lei@redhat.com> | 2022-03-08 15:32:18 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-03-08 17:57:19 -0700 |
| commit | 4f481208749a22d3570073e629dbc27d7d27c8da (patch) | |
| tree | 8df524f2cca05a364031383731151d6b9b8775cc /drivers/block | |
| parent | block: mtip32xx: don't touch q->queue_hw_ctx (diff) | |
| download | linux-dev-4f481208749a22d3570073e629dbc27d7d27c8da.tar.xz linux-dev-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 'drivers/block')
| -rw-r--r-- | drivers/block/rnbd/rnbd-clt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c index c08971de369f..58304f978e10 100644 --- a/drivers/block/rnbd/rnbd-clt.c +++ b/drivers/block/rnbd/rnbd-clt.c @@ -1343,7 +1343,7 @@ static inline void rnbd_init_hw_queue(struct rnbd_clt_dev *dev, static void rnbd_init_mq_hw_queues(struct rnbd_clt_dev *dev) { - int i; + unsigned long i; struct blk_mq_hw_ctx *hctx; struct rnbd_queue *q; |