io_uring: use kvfree() in io_sqe_buffer_register()
commit5.4-rM2-2.2.x-imx-squasheda8c73c1a61
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>
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d4a13e6711
commit
ab2df991e5
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@ -3498,8 +3498,8 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, void __user *arg,
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ret = 0;
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if (!pages || nr_pages > got_pages) {
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kfree(vmas);
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kfree(pages);
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kvfree(vmas);
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kvfree(pages);
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pages = kvmalloc_array(nr_pages, sizeof(struct page *),
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GFP_KERNEL);
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vmas = kvmalloc_array(nr_pages,
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