treewide: refresh kmalloc_obj() conversionsgrafted

This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci

This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.

Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.

Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/io_uring/cancel.h b/io_uring/cancel.h
new file mode 100644
index 000000000..1b201a094
--- /dev/null
+++ b/io_uring/cancel.h
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef IORING_CANCEL_H
+#define IORING_CANCEL_H
+
+#include <linux/io_uring_types.h>
+
+struct io_cancel_data {
+	struct io_ring_ctx *ctx;
+	u64 data;
+	struct file *file;
+	u8 opcode;
+	u32 flags;
+	int seq;
+};
+
+int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
+int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags);
+
+int io_try_cancel(struct io_uring_task *tctx, struct io_cancel_data *cd,
+		  unsigned int issue_flags);
+
+int io_sync_cancel(struct io_ring_ctx *ctx, void __user *arg);
+bool io_cancel_req_match(struct io_kiocb *req, struct io_cancel_data *cd);
+bool io_match_task_safe(struct io_kiocb *head, struct io_uring_task *tctx,
+			bool cancel_all);
+
+bool io_cancel_remove_all(struct io_ring_ctx *ctx, struct io_uring_task *tctx,
+			  struct hlist_head *list, bool cancel_all,
+			  bool (*cancel)(struct io_kiocb *));
+int io_cancel_remove(struct io_ring_ctx *ctx, struct io_cancel_data *cd,
+		     unsigned int issue_flags, struct hlist_head *list,
+		     bool (*cancel)(struct io_kiocb *));
+__cold bool io_uring_try_cancel_requests(struct io_ring_ctx *ctx,
+					 struct io_uring_task *tctx,
+					 bool cancel_all, bool is_sqpoll_thread);
+__cold void io_uring_cancel_generic(bool cancel_all, struct io_sq_data *sqd);
+__cold bool io_cancel_ctx_cb(struct io_wq_work *work, void *data);
+
+static inline bool io_cancel_match_sequence(struct io_kiocb *req, int sequence)
+{
+	if (req->cancel_seq_set && sequence == req->work.cancel_seq)
+		return true;
+
+	req->cancel_seq_set = true;
+	req->work.cancel_seq = sequence;
+	return false;
+}
+
+#endif