From: Pavel Begunkov <asml.silence@gmail.com>
Date: Tue, 11 Apr 2023 11:06:03 +0000 (+0100)
Subject: io_uring: add irq lockdep checks
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8ce4269eeedc5b31f5817f610b42cba8be8fa9de;p=linux.git

io_uring: add irq lockdep checks

We don't post CQEs from the IRQ context, add a check catching that.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/f23f7a24dbe8027b3d37873fece2b6488f878b31.1681210788.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h
index ef449e43d4933..25515d69d2055 100644
--- a/io_uring/io_uring.h
+++ b/io_uring/io_uring.h
@@ -94,6 +94,8 @@ bool io_match_task_safe(struct io_kiocb *head, struct task_struct *task,
 
 #define io_lockdep_assert_cq_locked(ctx)				\
 	do {								\
+		lockdep_assert(in_task());				\
+									\
 		if (ctx->flags & IORING_SETUP_IOPOLL) {			\
 			lockdep_assert_held(&ctx->uring_lock);		\
 		} else if (!ctx->task_complete) {			\