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Message-ID: <202408271419.3JJwwxE7-lkp@intel.com>
Date: Tue, 27 Aug 2024 14:32:59 +0800
From: kernel test robot <lkp@...el.com>
To: Maksym Kutsevol <max@...sevol.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Breno Leitao <leitao@...ian.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] netcons: Add udp send fail statistics to netconsole
Hi Maksym,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 8af174ea863c72f25ce31cee3baad8a301c0cf0f]
url: https://github.com/intel-lab-lkp/linux/commits/Maksym-Kutsevol/netcons-Add-udp-send-fail-statistics-to-netconsole/20240826-163850
base: 8af174ea863c72f25ce31cee3baad8a301c0cf0f
patch link: https://lore.kernel.org/r/20240824215130.2134153-2-max%40kutsevol.com
patch subject: [PATCH 2/2] netcons: Add udp send fail statistics to netconsole
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240827/202408271419.3JJwwxE7-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 08e5a1de8227512d4774a534b91cb2353cef6284)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408271419.3JJwwxE7-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
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408271419.3JJwwxE7-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/net/netconsole.c:27:
In file included from include/linux/mm.h:2228:
include/linux/vmstat.h:517:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
517 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from drivers/net/netconsole.c:35:
In file included from include/linux/netpoll.h:11:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/net/netconsole.c:35:
In file included from include/linux/netpoll.h:11:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/net/netconsole.c:35:
In file included from include/linux/netpoll.h:11:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
>> drivers/net/netconsole.c:341:3: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
340 | return sysfs_emit(buf, "xmit_drop: %lu enomem: %lu\n",
| ~~~
| %zu
341 | nt->stats.xmit_drop_count, nt->stats.enomem_count);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/netconsole.c:341:30: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
340 | return sysfs_emit(buf, "xmit_drop: %lu enomem: %lu\n",
| ~~~
| %zu
341 | nt->stats.xmit_drop_count, nt->stats.enomem_count);
| ^~~~~~~~~~~~~~~~~~~~~~
9 warnings generated.
vim +341 drivers/net/netconsole.c
335
336 static ssize_t stats_show(struct config_item *item, char *buf)
337 {
338 struct netconsole_target *nt = to_target(item);
339
340 return sysfs_emit(buf, "xmit_drop: %lu enomem: %lu\n",
> 341 nt->stats.xmit_drop_count, nt->stats.enomem_count);
342 }
343
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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