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Subject[PATCH 5.4 050/134] io_uring: use kvfree() in io_sqe_buffer_register()
Date
From: Denis Efremov <efremov@linux.com>

commit a8c73c1a614f6da6c0b04c393f87447e28cb6de4 upstream.

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

Fixes: d4ef647510b1 ("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>

---
fs/io_uring.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3498,8 +3498,8 @@ static int io_sqe_buffer_register(struct

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,

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