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Date: Tue, 2 Aug 2016 13:32:51 +0800
From: zijun_hu <zijun_hu@...o.com>
To: kbuild test robot <lkp@...el.com>
Cc: kbuild-all@...org, akpm@...ux-foundation.org,
ard.biesheuvel@...aro.org, david@...son.dropbear.id.au,
dev@...l1n.net, kuleshovmail@...il.com, tangchen@...fujitsu.com,
tj@...nel.org, weiyang@...ux.vnet.ibm.com,
mm-commits@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mm@...ck.org, torvalds@...ux-foundation.org
Subject: Re: [PATCH] mm/memblock.c: fix NULL dereference error
i am sorry, the second patch is only a test patch, please don't apply it
i will send another mail for correct this
On 08/02/2016 01:23 PM, kbuild test robot wrote:
> Hi zijun_hu,
>
> [auto build test WARNING on mmotm/master]
> [also build test WARNING on v4.7 next-20160801]
> [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/zijun_hu/mm-memblock-c-fix-NULL-dereference-error/20160802-130708
> base: git://git.cmpxchg.org/linux-mmotm.git master
> config: i386-randconfig-x009-201631 (attached as .config)
> compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=i386
>
> All warnings (new ones prefixed by >>):
>
> In file included from include/linux/kernel.h:13:0,
> from mm/memblock.c:13:
> mm/memblock.c: In function 'memblock_patch_verify':
>>> mm/memblock.c:1713:11: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'phys_addr_t {aka unsigned int}' [-Wformat=]
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^
> include/linux/printk.h:260:21: note: in definition of macro 'pr_fmt'
> #define pr_fmt(fmt) fmt
> ^~~
>>> mm/memblock.c:1713:3: note: in expansion of macro 'pr_info'
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^~~~~~~
> mm/memblock.c:1713:11: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'phys_addr_t {aka unsigned int}' [-Wformat=]
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^
> include/linux/printk.h:260:21: note: in definition of macro 'pr_fmt'
> #define pr_fmt(fmt) fmt
> ^~~
>>> mm/memblock.c:1713:3: note: in expansion of macro 'pr_info'
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^~~~~~~
> mm/memblock.c:1719:11: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'phys_addr_t {aka unsigned int}' [-Wformat=]
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^
> include/linux/printk.h:260:21: note: in definition of macro 'pr_fmt'
> #define pr_fmt(fmt) fmt
> ^~~
> mm/memblock.c:1719:3: note: in expansion of macro 'pr_info'
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^~~~~~~
> mm/memblock.c:1719:11: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'phys_addr_t {aka unsigned int}' [-Wformat=]
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^
> include/linux/printk.h:260:21: note: in definition of macro 'pr_fmt'
> #define pr_fmt(fmt) fmt
> ^~~
> mm/memblock.c:1719:3: note: in expansion of macro 'pr_info'
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^~~~~~~
> mm/memblock.c:1726:11: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'phys_addr_t {aka unsigned int}' [-Wformat=]
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^
> include/linux/printk.h:260:21: note: in definition of macro 'pr_fmt'
> #define pr_fmt(fmt) fmt
> ^~~
> mm/memblock.c:1726:3: note: in expansion of macro 'pr_info'
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^~~~~~~
> mm/memblock.c:1726:11: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'phys_addr_t {aka unsigned int}' [-Wformat=]
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^
> include/linux/printk.h:260:21: note: in definition of macro 'pr_fmt'
> #define pr_fmt(fmt) fmt
> ^~~
> mm/memblock.c:1726:3: note: in expansion of macro 'pr_info'
> pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> ^~~~~~~
>
> vim +1713 mm/memblock.c
>
> 1697 pr_info(" memory size = %#llx reserved size = %#llx\n",
> 1698 (unsigned long long)memblock.memory.total_size,
> 1699 (unsigned long long)memblock.reserved.total_size);
> 1700
> 1701 memblock_dump(&memblock.memory, "memory");
> 1702 memblock_dump(&memblock.reserved, "reserved");
> 1703 }
> 1704
> 1705 void __init_memblock memblock_patch_verify(void)
> 1706 {
> 1707 u64 i;
> 1708 phys_addr_t this_start, this_end;
> 1709
> 1710 pr_info("in %s: memory\n", __func__);
> 1711 for_each_mem_range_rev(i, &memblock.memory, NULL, NUMA_NO_NODE,
> 1712 MEMBLOCK_NONE, &this_start, &this_end, NULL)
>> 1713 pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> 1714 i, this_start, this_end);
> 1715
> 1716 pr_info("in %s: reserved\n", __func__);
> 1717 for_each_mem_range_rev(i, &memblock.reserved, NULL, NUMA_NO_NODE,
> 1718 MEMBLOCK_NONE, &this_start, &this_end, NULL)
> 1719 pr_info("[%#016llx]\t[%#016llx-%#016llx]\n",
> 1720 i, this_start, this_end);
> 1721
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
>
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