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, 199 insertions, 0 deletions

diff --git a/arch/m68k/emu/nfblock.c b/arch/m68k/emu/nfblock.c
new file mode 100644
index 000000000..fa6256c5a
--- /dev/null
+++ b/arch/m68k/emu/nfblock.c
@@ -0,0 +1,199 @@
+/*
+ * ARAnyM block device driver
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/blkdev.h>
+#include <linux/hdreg.h>
+#include <linux/slab.h>
+
+#include <asm/natfeat.h>
+
+static long nfhd_id;
+
+enum {
+	/* emulation entry points */
+	NFHD_READ_WRITE = 10,
+	NFHD_GET_CAPACITY = 14,
+
+	/* skip ACSI devices */
+	NFHD_DEV_OFFSET = 8,
+};
+
+static inline s32 nfhd_read_write(u32 major, u32 minor, u32 rwflag, u32 recno,
+				  u32 count, u32 buf)
+{
+	return nf_call(nfhd_id + NFHD_READ_WRITE, major, minor, rwflag, recno,
+		       count, buf);
+}
+
+static inline s32 nfhd_get_capacity(u32 major, u32 minor, u32 *blocks,
+				    u32 *blocksize)
+{
+	return nf_call(nfhd_id + NFHD_GET_CAPACITY, major, minor,
+		       virt_to_phys(blocks), virt_to_phys(blocksize));
+}
+
+static LIST_HEAD(nfhd_list);
+
+static int major_num;
+module_param(major_num, int, 0);
+
+struct nfhd_device {
+	struct list_head list;
+	int id;
+	u32 blocks, bsize;
+	int bshift;
+	struct gendisk *disk;
+};
+
+static void nfhd_submit_bio(struct bio *bio)
+{
+	struct nfhd_device *dev = bio->bi_bdev->bd_disk->private_data;
+	struct bio_vec bvec;
+	struct bvec_iter iter;
+	int dir, len, shift;
+	sector_t sec = bio->bi_iter.bi_sector;
+
+	dir = bio_data_dir(bio);
+	shift = dev->bshift;
+	bio_for_each_segment(bvec, bio, iter) {
+		len = bvec.bv_len;
+		len >>= 9;
+		nfhd_read_write(dev->id, 0, dir, sec >> shift, len >> shift,
+				bvec_phys(&bvec));
+		sec += len;
+	}
+	bio_endio(bio);
+}
+
+static int nfhd_getgeo(struct gendisk *disk, struct hd_geometry *geo)
+{
+	struct nfhd_device *dev = disk->private_data;
+
+	geo->cylinders = dev->blocks >> (6 - dev->bshift);
+	geo->heads = 4;
+	geo->sectors = 16;
+
+	return 0;
+}
+
+static const struct block_device_operations nfhd_ops = {
+	.owner	= THIS_MODULE,
+	.submit_bio = nfhd_submit_bio,
+	.getgeo	= nfhd_getgeo,
+};
+
+static int __init nfhd_init_one(int id, u32 blocks, u32 bsize)
+{
+	struct queue_limits lim = {
+		.logical_block_size	= bsize,
+		.features		= BLK_FEAT_ROTATIONAL,
+	};
+	struct nfhd_device *dev;
+	int dev_id = id - NFHD_DEV_OFFSET;
+	int err = -ENOMEM;
+
+	pr_info("nfhd%u: found device with %u blocks (%u bytes)\n", dev_id,
+		blocks, bsize);
+
+	if (bsize < 512 || (bsize & (bsize - 1))) {
+		pr_warn("nfhd%u: invalid block size\n", dev_id);
+		return -EINVAL;
+	}
+
+	dev = kmalloc_obj(struct nfhd_device);
+	if (!dev)
+		goto out;
+
+	dev->id = id;
+	dev->blocks = blocks;
+	dev->bsize = bsize;
+	dev->bshift = ffs(bsize) - 10;
+
+	dev->disk = blk_alloc_disk(&lim, NUMA_NO_NODE);
+	if (IS_ERR(dev->disk)) {
+		err = PTR_ERR(dev->disk);
+		goto free_dev;
+	}
+
+	dev->disk->major = major_num;
+	dev->disk->first_minor = dev_id * 16;
+	dev->disk->minors = 16;
+	dev->disk->fops = &nfhd_ops;
+	dev->disk->private_data = dev;
+	snprintf(dev->disk->disk_name, sizeof(dev->disk->disk_name), "nfhd%u",
+		 dev_id);
+	set_capacity(dev->disk, (sector_t)blocks * (bsize / 512));
+	err = add_disk(dev->disk);
+	if (err)
+		goto out_cleanup_disk;
+
+	list_add_tail(&dev->list, &nfhd_list);
+
+	return 0;
+
+out_cleanup_disk:
+	put_disk(dev->disk);
+free_dev:
+	kfree(dev);
+out:
+	return err;
+}
+
+static int __init nfhd_init(void)
+{
+	u32 blocks, bsize;
+	int ret;
+	int i;
+
+	nfhd_id = nf_get_id("XHDI");
+	if (!nfhd_id)
+		return -ENODEV;
+
+	ret = register_blkdev(major_num, "nfhd");
+	if (ret < 0) {
+		pr_warn("nfhd: unable to get major number\n");
+		return ret;
+	}
+
+	if (!major_num)
+		major_num = ret;
+
+	for (i = NFHD_DEV_OFFSET; i < 24; i++) {
+		if (nfhd_get_capacity(i, 0, &blocks, &bsize))
+			continue;
+		nfhd_init_one(i, blocks, bsize);
+	}
+
+	return 0;
+}
+
+static void __exit nfhd_exit(void)
+{
+	struct nfhd_device *dev, *next;
+
+	list_for_each_entry_safe(dev, next, &nfhd_list, list) {
+		list_del(&dev->list);
+		del_gendisk(dev->disk);
+		put_disk(dev->disk);
+		kfree(dev);
+	}
+	unregister_blkdev(major_num, "nfhd");
+}
+
+module_init(nfhd_init);
+module_exit(nfhd_exit);
+
+MODULE_DESCRIPTION("Atari NatFeat block device driver");
+MODULE_LICENSE("GPL");