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| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-04-11 12:06:04 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-12 12:09:41 -0600 |
| commit | 786788a8cfe03056e9c7b1c6e418c1db92a0ce80 (patch) | |
| tree | ca1b957506daec14157674a3c71db9173fda5386 /io_uring | |
| parent | 8ce4269eeedc5b31f5817f610b42cba8be8fa9de (diff) | |
| download | lwn-786788a8cfe03056e9c7b1c6e418c1db92a0ce80.tar.gz lwn-786788a8cfe03056e9c7b1c6e418c1db92a0ce80.zip | |
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 <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/961bbe6e433ec9bc0375127f23468b37b729df99.1681210788.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/rsrc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c index 603a783a0383..24e4e2109549 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); |