arch/um/drivers/vector_user.c:184:27: sparse: sparse: incorrect type in assignment (different base types)

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e1914add2799225a87502051415fc5c32aeb02ae
commit: b555cb66583e99158cfef8e91c025252cefae55b um: vector: Eliminate the dependency on uml_net
date:   1 year ago
config: um-randconfig-r111-20260514 (https://download.01.org/0day-ci/archive/20260514/202605141207.Cy94BJGe-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260514/202605141207.Cy94BJGe-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: b555cb66583e ("um: vector: Eliminate the dependency on uml_net")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605141207.Cy94BJGe-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/um/drivers/vector_user.c:184:27: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __be16 [assigned] [usertype] sll_protocol @@     got unsigned short @@
   arch/um/drivers/vector_user.c:184:27: sparse:     expected restricted __be16 [assigned] [usertype] sll_protocol
   arch/um/drivers/vector_user.c:184:27: sparse:     got unsigned short
>> arch/um/drivers/vector_user.c:828:9: sparse: sparse: Using plain integer as NULL pointer
   arch/um/drivers/vector_user.c:908:24: sparse: sparse: Using plain integer as NULL pointer

vim +184 arch/um/drivers/vector_user.c

b3b8ca2a1b63713 Anton Ivanov 2019-08-09  163  
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  164  static int create_raw_fd(char *iface, int flags, int proto)
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  165  {
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  166  	struct ifreq ifr;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  167  	int fd = -1;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  168  	struct sockaddr_ll sock;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  169  	int err = -ENOMEM;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  170  
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  171  	fd = socket(AF_PACKET, SOCK_RAW, flags);
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  172  	if (fd == -1) {
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  173  		err = -errno;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  174  		goto raw_fd_cleanup;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  175  	}
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  176  	memset(&ifr, 0, sizeof(ifr));
1e06589843632af Kees Cook    2024-02-02  177  	strscpy(ifr.ifr_name, iface);
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  178  	if (ioctl(fd, SIOCGIFINDEX, (void *) &ifr) < 0) {
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  179  		err = -errno;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  180  		goto raw_fd_cleanup;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  181  	}
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  182  
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  183  	sock.sll_family = AF_PACKET;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09 @184  	sock.sll_protocol = htons(proto);
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  185  	sock.sll_ifindex = ifr.ifr_ifindex;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  186  
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  187  	if (bind(fd,
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  188  		(struct sockaddr *) &sock, sizeof(struct sockaddr_ll)) < 0) {
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  189  		err = -errno;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  190  		goto raw_fd_cleanup;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  191  	}
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  192  	return fd;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  193  raw_fd_cleanup:
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  194  	printk(UM_KERN_ERR "user_init_raw: init failed, error %d", err);
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  195  	if (fd >= 0)
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  196  		os_close_file(fd);
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  197  	return err;
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  198  }
b3b8ca2a1b63713 Anton Ivanov 2019-08-09  199  

:::::: The code at line 184 was first introduced by commit
:::::: b3b8ca2a1b63713f59e8d7ad772b09bcd8dc9048 um: Add legacy tap support and rename existing vector to hybrid

:::::: TO: Anton Ivanov <anton.ivanov@cambridgegreys.com>
:::::: CC: Richard Weinberger <richard@nod.at>

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