linux-kernel - [ti:ti-rt-linux-5.10.y 3381/9998] drivers/rpmsg/virtio_rpmsg_bus.c:893:58: sparse: sparse: incorrect type in argument 2 (different base types)

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Date:   Mon, 11 Oct 2021 21:38:56 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ohad Ben-Cohen <ohad@...ery.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Suman Anna <s-anna@...com>, Tero Kristo <t-kristo@...com>
Subject: [ti:ti-rt-linux-5.10.y 3381/9998]
 drivers/rpmsg/virtio_rpmsg_bus.c:893:58: sparse: sparse: incorrect type in
 argument 2 (different base types)

tree:   git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.10.y
head:   7ff055c5f01acc96255948cdd632c72fd78a1f72
commit: 7e3ea0d62a4bf0ca04be9bc320d13f564aab0a92 [3381/9998] TEMP: rpmsg: add a description field
config: x86_64-randconfig-s022-20211011 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
        git fetch --no-tags ti ti-rt-linux-5.10.y
        git checkout 7e3ea0d62a4bf0ca04be9bc320d13f564aab0a92
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/rpmsg/virtio_rpmsg_bus.c:893:58: sparse: sparse: incorrect type in argument 2 (different base types) @@     expected restricted __virtio32 [usertype] val @@     got unsigned int [usertype] addr @@
   drivers/rpmsg/virtio_rpmsg_bus.c:893:58: sparse:     expected restricted __virtio32 [usertype] val
   drivers/rpmsg/virtio_rpmsg_bus.c:893:58: sparse:     got unsigned int [usertype] addr
>> drivers/rpmsg/virtio_rpmsg_bus.c:894:59: sparse: sparse: incorrect type in argument 2 (different base types) @@     expected restricted __virtio32 [usertype] val @@     got unsigned int [usertype] flags @@
   drivers/rpmsg/virtio_rpmsg_bus.c:894:59: sparse:     expected restricted __virtio32 [usertype] val
   drivers/rpmsg/virtio_rpmsg_bus.c:894:59: sparse:     got unsigned int [usertype] flags

vim +893 drivers/rpmsg/virtio_rpmsg_bus.c

   887	
   888		if (len == sizeof(*msg)) {
   889			addr = virtio32_to_cpu(vrp->vdev, msg->addr);
   890			flags = virtio32_to_cpu(vrp->vdev, msg->flags);
   891			chinfo.desc[0] = '\0';
   892		} else if (len == sizeof(*msg_ext)) {
 > 893			addr = virtio32_to_cpu(vrp->vdev, msg_ext->addr);
 > 894			flags = virtio32_to_cpu(vrp->vdev, msg_ext->flags);
   895			msg_ext->desc[RPMSG_NAME_SIZE - 1] = '\0';
   896			strncpy(chinfo.desc, msg_ext->desc, sizeof(chinfo.desc));
   897		} else {
   898			dev_err(dev, "malformed ns msg (%d)\n", len);
   899			return -EINVAL;
   900		}
   901	
   902		/*
   903		 * the name service ept does _not_ belong to a real rpmsg channel,
   904		 * and is handled by the rpmsg bus itself.
   905		 * for sanity reasons, make sure a valid rpdev has _not_ sneaked
   906		 * in somehow.
   907		 */
   908		if (rpdev) {
   909			dev_err(dev, "anomaly: ns ept has an rpdev handle\n");
   910			return -EINVAL;
   911		}
   912	
   913		/* don't trust the remote processor for null terminating the name */
   914		msg->name[RPMSG_NAME_SIZE - 1] = '\0';
   915	
   916		strncpy(chinfo.name, msg->name, sizeof(chinfo.name));
   917		chinfo.src = RPMSG_ADDR_ANY;
   918		chinfo.dst = addr;
   919	
   920		dev_info(dev, "%sing channel %s addr 0x%x\n",
   921			 flags & RPMSG_NS_DESTROY ?
   922			 "destroy" : "creat", msg->name, chinfo.dst);
   923	
   924		if (flags & RPMSG_NS_DESTROY) {
   925			ret = rpmsg_unregister_device(&vrp->vdev->dev, &chinfo);
   926			if (ret)
   927				dev_err(dev, "rpmsg_destroy_channel failed: %d\n", ret);
   928		} else {
   929			newch = rpmsg_create_channel(vrp, &chinfo);
   930			if (!newch)
   931				dev_err(dev, "rpmsg_create_channel failed\n");
   932		}
   933	
   934		return 0;
   935	}
   936	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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