From: kernel test robot <lkp@intel.com>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: kbuild-all@lists.01.org,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: [ambarus:saravana-fw-devlink-more-forgiving-v2 7805/7919] mm/kasan/shadow.c:87:14: warning: cast from pointer to integer of different size
Date: Wed, 3 Feb 2021 03:40:29 +0800 [thread overview]
Message-ID: <202102030327.Zdm7AcK4-lkp@intel.com> (raw)
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tree: https://github.com/ambarus/linux-0day saravana-fw-devlink-more-forgiving-v2
head: 2c330a32f492512c7e8683ce046c716ecec67681
commit: 9714985cbac3b3dfb9459578180f7256c482a21b [7805/7919] kasan: ensure poisoning size alignment
config: arm-allyesconfig (attached as .config)
compiler: arm-linux-gnueabi-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/ambarus/linux-0day/commit/9714985cbac3b3dfb9459578180f7256c482a21b
git remote add ambarus https://github.com/ambarus/linux-0day
git fetch --no-tags ambarus saravana-fw-devlink-more-forgiving-v2
git checkout 9714985cbac3b3dfb9459578180f7256c482a21b
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm
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 >>):
In file included from arch/arm/include/asm/bug.h:60,
from include/linux/bug.h:5,
from include/linux/cpumask.h:14,
from include/linux/smp.h:13,
from arch/arm/include/asm/proc-fns.h:105,
from arch/arm/include/asm/pgtable.h:11,
from include/linux/pgtable.h:6,
from include/linux/kasan.h:28,
from mm/kasan/shadow.c:14:
mm/kasan/shadow.c: In function 'kasan_poison':
>> mm/kasan/shadow.c:87:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
87 | if (WARN_ON((u64)addr & KASAN_GRANULE_MASK))
| ^
include/asm-generic/bug.h:119:25: note: in definition of macro 'WARN_ON'
119 | int __ret_warn_on = !!(condition); \
| ^~~~~~~~~
mm/kasan/shadow.c: In function 'kasan_unpoison':
mm/kasan/shadow.c:128:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
128 | if (WARN_ON((u64)addr & KASAN_GRANULE_MASK))
| ^
include/asm-generic/bug.h:119:25: note: in definition of macro 'WARN_ON'
119 | int __ret_warn_on = !!(condition); \
| ^~~~~~~~~
vim +87 mm/kasan/shadow.c
71
72 void kasan_poison(const void *addr, size_t size, u8 value)
73 {
74 void *shadow_start, *shadow_end;
75
76 /*
77 * Perform shadow offset calculation based on untagged address, as
78 * some of the callers (e.g. kasan_poison_object_data) pass tagged
79 * addresses to this function.
80 */
81 addr = kasan_reset_tag(addr);
82
83 /* Skip KFENCE memory if called explicitly outside of sl*b. */
84 if (is_kfence_address(addr))
85 return;
86
> 87 if (WARN_ON((u64)addr & KASAN_GRANULE_MASK))
88 return;
89 if (WARN_ON(size & KASAN_GRANULE_MASK))
90 return;
91
92 shadow_start = kasan_mem_to_shadow(addr);
93 shadow_end = kasan_mem_to_shadow(addr + size);
94
95 __memset(shadow_start, value, shadow_end - shadow_start);
96 }
97 EXPORT_SYMBOL(kasan_poison);
98
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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reply other threads:[~2021-02-02 19:41 UTC|newest]
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