drivers/net/ipvlan/ipvlan_core.c:57:36: sparse: sparse: incorrect type in argument 1 (different base types)

From: kernel test robot
Date: Wed Nov 08 2023 - 20:16:17 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 6bc986ab839c844e78a2333a02e55f02c9e57935
commit: c675e06a98a474f7ad0af32ce467613da818da52 ipvlan: decouple l3s mode dependencies from other modes
date: 4 years, 9 months ago
config: i386-randconfig-062-20230914 (https://download.01.org/0day-ci/archive/20231109/202311090900.o5hCIMpN-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231109/202311090900.o5hCIMpN-lkp@xxxxxxxxx/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
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311090900.o5hCIMpN-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> drivers/net/ipvlan/ipvlan_core.c:57:36: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] a @@ got restricted __be32 const [usertype] s_addr @@
drivers/net/ipvlan/ipvlan_core.c:57:36: sparse: expected unsigned int [usertype] a
drivers/net/ipvlan/ipvlan_core.c:57:36: sparse: got restricted __be32 const [usertype] s_addr

vim +57 drivers/net/ipvlan/ipvlan_core.c

2ad7bf3638411c Mahesh Bandewar 2014-11-23 52
2ad7bf3638411c Mahesh Bandewar 2014-11-23 53 static u8 ipvlan_get_v4_hash(const void *iaddr)
2ad7bf3638411c Mahesh Bandewar 2014-11-23 54 {
2ad7bf3638411c Mahesh Bandewar 2014-11-23 55 const struct in_addr *ip4_addr = iaddr;
2ad7bf3638411c Mahesh Bandewar 2014-11-23 56
2ad7bf3638411c Mahesh Bandewar 2014-11-23 @57 return jhash_1word(ip4_addr->s_addr, ipvlan_jhash_secret) &
2ad7bf3638411c Mahesh Bandewar 2014-11-23 58 IPVLAN_HASH_MASK;
2ad7bf3638411c Mahesh Bandewar 2014-11-23 59 }
2ad7bf3638411c Mahesh Bandewar 2014-11-23 60

:::::: The code at line 57 was first introduced by commit
:::::: 2ad7bf3638411cb547f2823df08166c13ab04269 ipvlan: Initial check-in of the IPVLAN driver.

:::::: TO: Mahesh Bandewar <maheshb@xxxxxxxxxx>
:::::: CC: David S. Miller <davem@xxxxxxxxxxxxx>

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