Hi Vladimir, url: https://github.com/0day-ci/linux/commits/Vladimir-Oltean/PTP-for-DSA-tag_... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 3c5a2fd042d0bfac71a2dfb99515723d318df47b config: i386-randconfig-m031-20210209 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: net/dsa/tag_ocelot.c:59 ocelot_xmit() warn: should '(((1))) << (dp->index)' be a 64 bit type? net/dsa/tag_ocelot.c:71 seville_xmit() warn: should '(((1))) << (dp->index)' be a 64 bit type? vim +59 net/dsa/tag_ocelot.c 9d88a16c0fc930 Vladimir Oltean 2021-02-13 52 static struct sk_buff *ocelot_xmit(struct sk_buff *skb, 9d88a16c0fc930 Vladimir Oltean 2021-02-13 53 struct net_device *netdev) 9d88a16c0fc930 Vladimir Oltean 2021-02-13 54 { 9d88a16c0fc930 Vladimir Oltean 2021-02-13 55 struct dsa_port *dp = dsa_slave_to_port(netdev); 9d88a16c0fc930 Vladimir Oltean 2021-02-13 56 void *injection; 9d88a16c0fc930 Vladimir Oltean 2021-02-13 57 9d88a16c0fc930 Vladimir Oltean 2021-02-13 58 ocelot_xmit_common(skb, netdev, cpu_to_be32(0x8880000a), &injection); 9d88a16c0fc930 Vladimir Oltean 2021-02-13 @59 ocelot_ifh_set_dest(injection, BIT(dp->index)); db->index is less than db->num_ports which 32 or less but sometimes it comes from the device tree so who knows. The ocelot_ifh_set_dest() function takes a u64 though and that suggests that BIT() should be changed to BIT_ULL(). 9d88a16c0fc930 Vladimir Oltean 2021-02-13 60 9d88a16c0fc930 Vladimir Oltean 2021-02-13 61 return skb; 9d88a16c0fc930 Vladimir Oltean 2021-02-13 62 } 9d88a16c0fc930 Vladimir Oltean 2021-02-13 63 9d88a16c0fc930 Vladimir Oltean 2021-02-13 64 static struct sk_buff *seville_xmit(struct sk_buff *skb, 9d88a16c0fc930 Vladimir Oltean 2021-02-13 65 struct net_device *netdev) 9d88a16c0fc930 Vladimir Oltean 2021-02-13 66 { 9d88a16c0fc930 Vladimir Oltean 2021-02-13 67 struct dsa_port *dp = dsa_slave_to_port(netdev); 9d88a16c0fc930 Vladimir Oltean 2021-02-13 68 void *injection; 9d88a16c0fc930 Vladimir Oltean 2021-02-13 69 9d88a16c0fc930 Vladimir Oltean 2021-02-13 70 ocelot_xmit_common(skb, netdev, cpu_to_be32(0x88800005), &injection); 9d88a16c0fc930 Vladimir Oltean 2021-02-13 @71 seville_ifh_set_dest(injection, BIT(dp->index)); Same. 9d88a16c0fc930 Vladimir Oltean 2021-02-13 72 8dce89aa5f3274 Vladimir Oltean 2019-11-14 73 return skb; 8dce89aa5f3274 Vladimir Oltean 2019-11-14 74 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org