Hi Matteo, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on net/master] [also build test WARNING on v5.1-rc7] [cannot apply to next-20190429] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Matteo-Croce/proc-sysctl-add-shared-variables-for-range-check/20190430-065026 config: x86_64-randconfig-x000-201917 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): net/netfilter/ipvs/ip_vs_ctl.c: In function 'proc_do_defense_mode': >> net/netfilter/ipvs/ip_vs_ctl.c:1664:28: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] struct netns_ipvs *ipvs = table->extra2; ^~~~~ vim +/const +1664 net/netfilter/ipvs/ip_vs_ctl.c 749c42b6 net/netfilter/ipvs/ip_vs_ctl.c Julian Anastasov 2012-04-24 1659 ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1660 static int fe2c6338 net/netfilter/ipvs/ip_vs_ctl.c Joe Perches 2013-06-11 1661 proc_do_defense_mode(struct ctl_table *table, int write, ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1662 void __user *buffer, size_t *lenp, loff_t *ppos) ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1663 { 717e917d net/netfilter/ipvs/ip_vs_ctl.c Eric W. Biederman 2015-09-21 @1664 struct netns_ipvs *ipvs = table->extra2; ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1665 int *valp = table->data; ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1666 int val = *valp; ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1667 int rc; ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1668 8d65af78 net/netfilter/ipvs/ip_vs_ctl.c Alexey Dobriyan 2009-09-23 1669 rc = proc_dointvec(table, write, buffer, lenp, ppos); ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1670 if (write && (*valp != val)) { ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1671 if ((*valp < 0) || (*valp > 3)) { ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1672 /* Restore the correct value */ ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1673 *valp = val; ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1674 } else { 717e917d net/netfilter/ipvs/ip_vs_ctl.c Eric W. Biederman 2015-09-21 1675 update_defense_level(ipvs); ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1676 } ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1677 } ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1678 return rc; ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1679 } ^1da177e net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 1680 :::::: The code at line 1664 was first introduced by commit :::::: 717e917ddfa8db628041490eb44bce5815e947fd ipvs: Don't use current in proc_do_defense_mode :::::: TO: Eric W. Biederman <ebiederm@xxxxxxxxxxxx> :::::: CC: Simon Horman <horms@xxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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