6.1-stable review patch. If anyone has any objections, please let me know.
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From: Pavel Begunkov asml.silence@gmail.com
Commit 475a8d30371604a6363da8e304a608a5959afc40 upstream.
Follow the non-ringed pbuf struct io_buffer_list allocations and account it against the memcg. There is low chance of that being an actual problem as ring provided buffer should either pin user memory or allocate it, which is already accounted.
Cc: stable@vger.kernel.org # 6.1 Signed-off-by: Pavel Begunkov asml.silence@gmail.com Link: https://lore.kernel.org/r/3985218b50d341273cafff7234e1a7e6d0db9808.174715049... Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- io_uring/kbuf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -510,7 +510,7 @@ int io_register_pbuf_ring(struct io_ring if (bl->buf_nr_pages || !list_empty(&bl->buf_list)) return -EEXIST; } else { - free_bl = bl = kzalloc(sizeof(*bl), GFP_KERNEL); + free_bl = bl = kzalloc(sizeof(*bl), GFP_KERNEL_ACCOUNT); if (!bl) return -ENOMEM; }