Jens Axboe 9073188835 io_uring: convert io_buffer_idr to XArray
commit 9e15c3a0ced5a61f320b989072c24983cb1620c1 upstream.

Like we did for the personality idr, convert the IO buffer idr to use
XArray. This avoids a use-after-free on removal of entries, since idr
doesn't like doing so from inside an iterator, and it nicely reduces
the amount of code we need to support this feature.

Fixes: 5a2e745d4d43 ("io_uring: buffer registration infrastructure")
Cc: stable@vger.kernel.org
Cc: Matthew Wilcox <willy@infradead.org>
Cc: yangerkun <yangerkun@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-19 09:44:56 +02:00
..
2021-06-23 14:42:40 +02:00
2020-10-16 11:11:22 -07:00
2021-07-14 16:55:59 +02:00
2021-07-14 16:55:43 +02:00
2021-07-14 16:55:47 +02:00
2021-07-14 16:56:13 +02:00
2021-07-14 16:56:12 +02:00
2020-09-10 14:03:31 -07:00
2020-08-04 21:02:38 -04:00
2020-09-22 23:45:57 -04:00
2021-07-19 09:44:51 +02:00
2020-10-23 11:33:41 -07:00
2021-01-27 11:55:29 +01:00
2020-10-23 11:33:41 -07:00
2020-10-24 12:40:18 -07:00
2020-08-27 16:06:47 -04:00