From 4f02cc4071a18c78bfff571d796edef055d57daa Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Tue, 21 Apr 2026 09:46:44 +0100 Subject: [PATCH] io_uring/zcrx: clear RQ headers on init It might be unexpected to users if the RQ head/tail after a ring creation are not zeroed, fix that. Cc: stable@vger.kernel.org Fixes: 6f377873cb239 ("io_uring/zcrx: add interface queue and refill queue") Signed-off-by: Pavel Begunkov Link: https://patch.msgid.link/331f94663c3e8f021ffa3cb770ca2844a07d4855.1776760911.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- io_uring/zcrx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index fab3693ecb0d..2eb09219f0a0 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -396,6 +396,7 @@ static int io_allocate_rbuf_ring(struct io_ring_ctx *ctx, ifq->rq.ring = (struct io_uring *)ptr; ifq->rq.rqes = (struct io_uring_zcrx_rqe *)(ptr + off); + memset(ifq->rq.ring, 0, sizeof(*ifq->rq.ring)); return 0; }