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io_uring: use kvfree() in io_sqe_buffer_register()

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commit a8c73c1a61 upstream.

Use kvfree() to free the pages and vmas, since they are allocated by
kvmalloc_array() in a loop.

Fixes: d4ef647510 ("io_uring: avoid page allocation warnings")
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200605093203.40087-1-efremov@linux.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Denis Efremov
2020-06-05 12:32:03 +03:00
committed by Greg Kroah-Hartman
parent d4a13e6711
commit ab2df991e5
1 changed files with 2 additions and 2 deletions
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4
fs/io_uring.c
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@@ -3498,8 +3498,8 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, void __user *arg,
ret = 0;
if (!pages || nr_pages > got_pages) {
kfree(vmas);
kfree(pages);
kvfree(vmas);
kvfree(pages);
pages = kvmalloc_array(nr_pages, sizeof(struct page *),
GFP_KERNEL);
vmas = kvmalloc_array(nr_pages,