Re: [PATCH] mm: fix is_pinnable_page against on cma page
From: kernel test robot
Date: Tue May 03 2022 - 04:49:45 EST
Hi Minchan,
I love your patch! Perhaps something to improve:
[auto build test WARNING on hnaz-mm/master]
url: https://github.com/intel-lab-lkp/linux/commits/Minchan-Kim/mm-fix-is_pinnable_page-against-on-cma-page/20220503-013733
base: https://github.com/hnaz/linux-mm master
config: hexagon-randconfig-r034-20220501 (https://download.01.org/0day-ci/archive/20220503/202205031644.EtLKbqIX-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 363b3a645a1e30011cc8da624f13dac5fd915628)
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/intel-lab-lkp/linux/commit/1b8636710c31d44310f1d344e337c207562b851d
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Minchan-Kim/mm-fix-is_pinnable_page-against-on-cma-page/20220503-013733
git checkout 1b8636710c31d44310f1d344e337c207562b851d
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
In file included from fs/statfs.c:2:
In file included from include/linux/syscalls.h:88:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:6:
In file included from include/linux/ring_buffer.h:5:
include/linux/mm.h:1630:47: error: use of undeclared identifier 'MIGRATE_CMA'; did you mean 'MIGRATE_SYNC'?
return !(is_zone_movable_page(page) || mt == MIGRATE_CMA ||
^~~~~~~~~~~
MIGRATE_SYNC
include/linux/migrate_mode.h:18:2: note: 'MIGRATE_SYNC' declared here
MIGRATE_SYNC,
^
In file included from fs/statfs.c:2:
In file included from include/linux/syscalls.h:88:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:6:
In file included from include/linux/ring_buffer.h:5:
include/linux/mm.h:1631:9: error: use of undeclared identifier 'MIGRATE_ISOLATE'; did you mean 'MIGRATE_MOVABLE'?
mt == MIGRATE_ISOLATE || is_zero_pfn(page_to_pfn(page)));
^~~~~~~~~~~~~~~
MIGRATE_MOVABLE
include/linux/mmzone.h:44:2: note: 'MIGRATE_MOVABLE' declared here
MIGRATE_MOVABLE,
^
>> fs/statfs.c:131:3: warning: 'memcpy' will always overflow; destination buffer has size 64, but size argument is 88 [-Wfortify-source]
memcpy(&buf, st, sizeof(*st));
^
1 warning and 2 errors generated.
vim +/memcpy +131 fs/statfs.c
c8b91accfa1059 Al Viro 2011-03-12 125
c8b91accfa1059 Al Viro 2011-03-12 126 static int do_statfs_native(struct kstatfs *st, struct statfs __user *p)
c8b91accfa1059 Al Viro 2011-03-12 127 {
c8b91accfa1059 Al Viro 2011-03-12 128 struct statfs buf;
7ed1ee6118ae77 Al Viro 2010-03-23 129
c8b91accfa1059 Al Viro 2011-03-12 130 if (sizeof(buf) == sizeof(*st))
c8b91accfa1059 Al Viro 2011-03-12 @131 memcpy(&buf, st, sizeof(*st));
7ed1ee6118ae77 Al Viro 2010-03-23 132 else {
c8b91accfa1059 Al Viro 2011-03-12 133 if (sizeof buf.f_blocks == 4) {
c8b91accfa1059 Al Viro 2011-03-12 134 if ((st->f_blocks | st->f_bfree | st->f_bavail |
c8b91accfa1059 Al Viro 2011-03-12 135 st->f_bsize | st->f_frsize) &
7ed1ee6118ae77 Al Viro 2010-03-23 136 0xffffffff00000000ULL)
7ed1ee6118ae77 Al Viro 2010-03-23 137 return -EOVERFLOW;
7ed1ee6118ae77 Al Viro 2010-03-23 138 /*
7ed1ee6118ae77 Al Viro 2010-03-23 139 * f_files and f_ffree may be -1; it's okay to stuff
7ed1ee6118ae77 Al Viro 2010-03-23 140 * that into 32 bits
7ed1ee6118ae77 Al Viro 2010-03-23 141 */
c8b91accfa1059 Al Viro 2011-03-12 142 if (st->f_files != -1 &&
c8b91accfa1059 Al Viro 2011-03-12 143 (st->f_files & 0xffffffff00000000ULL))
7ed1ee6118ae77 Al Viro 2010-03-23 144 return -EOVERFLOW;
c8b91accfa1059 Al Viro 2011-03-12 145 if (st->f_ffree != -1 &&
c8b91accfa1059 Al Viro 2011-03-12 146 (st->f_ffree & 0xffffffff00000000ULL))
7ed1ee6118ae77 Al Viro 2010-03-23 147 return -EOVERFLOW;
7ed1ee6118ae77 Al Viro 2010-03-23 148 }
7ed1ee6118ae77 Al Viro 2010-03-23 149
c8b91accfa1059 Al Viro 2011-03-12 150 buf.f_type = st->f_type;
c8b91accfa1059 Al Viro 2011-03-12 151 buf.f_bsize = st->f_bsize;
c8b91accfa1059 Al Viro 2011-03-12 152 buf.f_blocks = st->f_blocks;
c8b91accfa1059 Al Viro 2011-03-12 153 buf.f_bfree = st->f_bfree;
c8b91accfa1059 Al Viro 2011-03-12 154 buf.f_bavail = st->f_bavail;
c8b91accfa1059 Al Viro 2011-03-12 155 buf.f_files = st->f_files;
c8b91accfa1059 Al Viro 2011-03-12 156 buf.f_ffree = st->f_ffree;
c8b91accfa1059 Al Viro 2011-03-12 157 buf.f_fsid = st->f_fsid;
c8b91accfa1059 Al Viro 2011-03-12 158 buf.f_namelen = st->f_namelen;
c8b91accfa1059 Al Viro 2011-03-12 159 buf.f_frsize = st->f_frsize;
c8b91accfa1059 Al Viro 2011-03-12 160 buf.f_flags = st->f_flags;
c8b91accfa1059 Al Viro 2011-03-12 161 memset(buf.f_spare, 0, sizeof(buf.f_spare));
c8b91accfa1059 Al Viro 2011-03-12 162 }
c8b91accfa1059 Al Viro 2011-03-12 163 if (copy_to_user(p, &buf, sizeof(buf)))
c8b91accfa1059 Al Viro 2011-03-12 164 return -EFAULT;
7ed1ee6118ae77 Al Viro 2010-03-23 165 return 0;
7ed1ee6118ae77 Al Viro 2010-03-23 166 }
7ed1ee6118ae77 Al Viro 2010-03-23 167
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