diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2024-11-13 03:26:01 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-11-13 07:38:04 -0700 |
| commit | b9d69371e8fa90fa3ab100f4fcb4815b13b3673a (patch) | |
| tree | fdf701ddaf100750b097c955c3937fe16f99d15f /io_uring | |
| parent | a43e236fb9aef4528f2bd24095d1f348030f5d9d (diff) | |
io_uring: fix invalid hybrid polling ctx leaks
It has already allocated the ctx by the point where it checks the hybrid
poll configuration, plain return leaks the memory.
Fixes: 01ee194d1aba1 ("io_uring: add support for hybrid IOPOLL")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://lore.kernel.org/r/b57f2608088020501d352fcdeebdb949e281d65b.1731468230.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/io_uring.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 042a65d38d0c..bd71782057de 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -3616,11 +3616,6 @@ static __cold int io_uring_create(unsigned entries, struct io_uring_params *p, if (!(ctx->flags & IORING_SETUP_NO_SQARRAY)) static_branch_inc(&io_key_has_sqarray); - /* HYBRID_IOPOLL only valid with IOPOLL */ - if ((ctx->flags & (IORING_SETUP_IOPOLL|IORING_SETUP_HYBRID_IOPOLL)) == - IORING_SETUP_HYBRID_IOPOLL) - return -EINVAL; - if ((ctx->flags & IORING_SETUP_DEFER_TASKRUN) && !(ctx->flags & IORING_SETUP_IOPOLL) && !(ctx->flags & IORING_SETUP_SQPOLL)) @@ -3671,6 +3666,11 @@ static __cold int io_uring_create(unsigned entries, struct io_uring_params *p, ctx->notify_method = TWA_SIGNAL; } + /* HYBRID_IOPOLL only valid with IOPOLL */ + if ((ctx->flags & (IORING_SETUP_IOPOLL|IORING_SETUP_HYBRID_IOPOLL)) == + IORING_SETUP_HYBRID_IOPOLL) + goto err; + /* * For DEFER_TASKRUN we require the completion task to be the same as the * submission task. This implies that there is only one submitter, so enforce |