io_uring fds marked O_CLOEXEC and we explicitly cancel all requests
before going through exec, so we don't want to leave task's file
references to not our anymore io_uring instances.
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
fs/io_uring.c | 25 ++++++++++++++++---------
1 file changed, 16 insertions(+), 9 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index a4deef746bc3..3f38c252860b 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -8958,6 +8958,15 @@ static void io_uring_attempt_task_drop(struct file *file)
io_uring_del_task_file(file);
}
+static void io_uring_remove_task_files(struct io_uring_task *tctx)
+{
+ struct file *file;
+ unsigned long index;
+
+ xa_for_each(&tctx->xa, index, file)
+ io_uring_del_task_file(file);
+}
+
void __io_uring_files_cancel(struct files_struct *files)
{
struct io_uring_task *tctx = current->io_uring;
@@ -8966,16 +8975,12 @@ void __io_uring_files_cancel(struct files_struct *files)
/* make sure overflow events are dropped */
atomic_inc(&tctx->in_idle);
-
- xa_for_each(&tctx->xa, index, file) {
- struct io_ring_ctx *ctx = file->private_data;
-
- io_uring_cancel_task_requests(ctx, files);
- if (files)
- io_uring_del_task_file(file);
- }
-
+ xa_for_each(&tctx->xa, index, file)
+ io_uring_cancel_task_requests(file->private_data, files);
atomic_dec(&tctx->in_idle);
+
+ if (files)
+ io_uring_remove_task_files(tctx);
}
static s64 tctx_inflight(struct io_uring_task *tctx)
@@ -9038,6 +9043,8 @@ void __io_uring_task_cancel(void)
} while (1);
atomic_dec(&tctx->in_idle);
+
+ io_uring_remove_task_files(tctx);
}
static int io_uring_flush(struct file *file, void *data)
--
2.24.0
