| Message ID | 20201028003849.929490-3-andrew@lunn.ch (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Markup some printk like functions | expand |
On Thu, Oct 29, 2020 at 10:49:34AM +0800, kernel test robot wrote: > Hi Andrew, > > I love your patch! Perhaps something to improve: > > [auto build test WARNING on net-next/master] > > url: https://github.com/0day-ci/linux/commits/Andrew-Lunn/net-dccp-Add-__printf-markup-to-fix-Wsuggest-attribute-format/20201029-081346 > base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git cd29296fdfca919590e4004a7e4905544f4c4a32 > config: arc-allyesconfig (attached as .config) > compiler: arceb-elf-gcc (GCC) 9.3.0 > reproduce (this is a W=1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # https://github.com/0day-ci/linux/commit/0be08855cea6e7b987406c1beee6ca1b508f5066 > git remote add linux-review https://github.com/0day-ci/linux > git fetch --no-tags linux-review Andrew-Lunn/net-dccp-Add-__printf-markup-to-fix-Wsuggest-attribute-format/20201029-081346 > git checkout 0be08855cea6e7b987406c1beee6ca1b508f5066 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > All warnings (new ones prefixed by >>): > > net/tipc/netlink_compat.c: In function 'tipc_nl_compat_link_stat_dump': > >> net/tipc/netlink_compat.c:591:39: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'void *' [-Wformat=] > 591 | tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n", > | ~^ > | | > | char * > | %p > 592 | nla_data(link[TIPC_NLA_LINK_NAME])); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > | | > | void * Yep, which is the point of adding this markup, and why there is a follow up patch fixing this. Please don't let this 0-day report stop the commit being merged. Andrew
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c index 1c7aa51cc2a3..17a90a2fe753 100644 --- a/net/tipc/netlink_compat.c +++ b/net/tipc/netlink_compat.c @@ -118,7 +118,8 @@ static void tipc_tlv_init(struct sk_buff *skb, u16 type) skb_put(skb, sizeof(struct tlv_desc)); } -static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...) +static __printf(2, 3) int tipc_tlv_sprintf(struct sk_buff *skb, + const char *fmt, ...) { int n; u16 len;
net/tipc/netlink_compat.c: In function ‘tipc_tlv_sprintf’: net/tipc/netlink_compat.c:137:2: warning: function ‘tipc_tlv_sprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 137 | n = vscnprintf(buf, rem, fmt, args); Signed-off-by: Andrew Lunn <andrew@lunn.ch> --- net/tipc/netlink_compat.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)