From 786788a8cfe03056e9c7b1c6e418c1db92a0ce80 Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Tue, 11 Apr 2023 12:06:04 +0100 Subject: [PATCH] io_uring/rsrc: add lockdep checks Add a lockdep chek to make sure that file and buffer updates hold ->uring_lock. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/961bbe6e433ec9bc0375127f23468b37b729df99.1681210788.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- io_uring/rsrc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c index 603a783..24e4e210 100644 --- a/io_uring/rsrc.c +++ b/io_uring/rsrc.c @@ -534,6 +534,8 @@ static int __io_register_rsrc_update(struct io_ring_ctx *ctx, unsigned type, __u32 tmp; int err; + lockdep_assert_held(&ctx->uring_lock); + if (check_add_overflow(up->offset, nr_args, &tmp)) return -EOVERFLOW; err = io_rsrc_node_switch_start(ctx); -- 2.7.4