net/core/dev.o: warning: objtool: __netif_receive_skb_core.constprop.0+0x770: unreachable instruction

net/core/dev.o: warning: objtool: __netif_receive_skb_core.constprop.0+0x770: unreachable instruction

[kernel test robot]

:::::: 
:::::: Manual check reason: "loongarch: unreachable instruction"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Eric Dumazet <edumazet@google.com>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Simon Horman <horms@kernel.org>

Hi Eric,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e767a4ea70a3992c37ed604157d32f0dfbf9b1e3
commit: a9b460225e47a3d98296eba71c62ff0ad58a2032 net: always inline some skb helpers
date:   6 months ago
:::::: branch date: 11 hours ago
:::::: commit date: 6 months ago
config: loongarch-randconfig-r2105-20261002 (https://download.01.org/0day-ci/archive/20261003/202610031300.KVVwBiwb-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261003/202610031300.KVVwBiwb-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: a9b460225e47 ("net: always inline some skb helpers")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202610031300.KVVwBiwb-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> net/core/dev.o: warning: objtool: __netif_receive_skb_core.constprop.0+0x770: unreachable instruction
   net/core/dev.o: warning: objtool: netdev_run_todo+0x1d4: unreachable instruction
   net/core/dev.o: warning: objtool: unregister_netdevice_many_notify+0x254: unreachable instruction
   net/core/dev.o: warning: objtool: register_netdevice+0x88: unreachable instruction

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki