7:42 p.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9b57f458985742bd1c585f4c7f36d04634ce1143
commit: 012a224e1fa31fc256aab921f691598e03db6018 s390/uaccess: introduce bit field for OAC
specifier
date: 5 days ago
config: s390-randconfig-r033-20220120
(https://download.01.org/0day-ci/archive/20220122/202201221613.fgIWUw0F-lk...)
compiler: s390-linux-gcc (GCC) 11.2.0
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 012a224e1fa31fc256aab921f691598e03db6018
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir
ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
arch/s390/lib/uaccess.c: In function 'copy_from_user_mvcos':
> arch/s390/lib/uaccess.c:65:15: error: variable 'spec' has
initializer but incomplete type
65 | union oac spec = {
| ^~~
> arch/s390/lib/uaccess.c:66:18: error: 'union oac' has no
member named 'oac2'
66 | .oac2.as =
PSW_BITS_AS_SECONDARY,
| ^~~~
arch/s390/lib/uaccess.c:66:28: warning: excess elements in union initializer
66 | .oac2.as = PSW_BITS_AS_SECONDARY,
| ^~~~~~~~~~~~~~~~~~~~~
arch/s390/lib/uaccess.c:66:28: note: (near initialization for 'spec')
arch/s390/lib/uaccess.c:67:18: error: 'union oac' has no member named
'oac2'
67 | .oac2.a = 1,
| ^~~~
arch/s390/lib/uaccess.c:67:27: warning: excess elements in union initializer
67 | .oac2.a = 1,
| ^
arch/s390/lib/uaccess.c:67:27: note: (near initialization for 'spec')
> arch/s390/lib/uaccess.c:65:19: error: storage size of
'spec' isn't known
65 | union oac spec = {
| ^~~~
arch/s390/lib/uaccess.c:65:19: warning: unused variable 'spec'
[-Wunused-variable]
arch/s390/lib/uaccess.c: In function 'copy_to_user_mvcos':
arch/s390/lib/uaccess.c:142:15: error: variable 'spec' has initializer but
incomplete type
142 | union oac spec = {
| ^~~
> arch/s390/lib/uaccess.c:143:18: error: 'union oac' has no
member named 'oac1'
143 | .oac1.as =
PSW_BITS_AS_SECONDARY,
| ^~~~
arch/s390/lib/uaccess.c:143:28: warning: excess elements in union initializer
143 | .oac1.as = PSW_BITS_AS_SECONDARY,
| ^~~~~~~~~~~~~~~~~~~~~
arch/s390/lib/uaccess.c:143:28: note: (near initialization for 'spec')
arch/s390/lib/uaccess.c:144:18: error: 'union oac' has no member named
'oac1'
144 | .oac1.a = 1,
| ^~~~
arch/s390/lib/uaccess.c:144:27: warning: excess elements in union initializer
144 | .oac1.a = 1,
| ^
arch/s390/lib/uaccess.c:144:27: note: (near initialization for 'spec')
arch/s390/lib/uaccess.c:142:19: error: storage size of 'spec' isn't known
142 | union oac spec = {
| ^~~~
arch/s390/lib/uaccess.c:142:19: warning: unused variable 'spec'
[-Wunused-variable]
arch/s390/lib/uaccess.c: In function 'clear_user_mvcos':
arch/s390/lib/uaccess.c:218:15: error: variable 'spec' has initializer but
incomplete type
218 | union oac spec = {
| ^~~
arch/s390/lib/uaccess.c:219:18: error: 'union oac' has no member named
'oac1'
219 | .oac1.as = PSW_BITS_AS_SECONDARY,
| ^~~~
arch/s390/lib/uaccess.c:219:28: warning: excess elements in union initializer
219 | .oac1.as = PSW_BITS_AS_SECONDARY,
| ^~~~~~~~~~~~~~~~~~~~~
arch/s390/lib/uaccess.c:219:28: note: (near initialization for 'spec')
arch/s390/lib/uaccess.c:220:18: error: 'union oac' has no member named
'oac1'
220 | .oac1.a = 1,
| ^~~~
arch/s390/lib/uaccess.c:220:27: warning: excess elements in union initializer
220 | .oac1.a = 1,
| ^
arch/s390/lib/uaccess.c:220:27: note: (near initialization for 'spec')
arch/s390/lib/uaccess.c:218:19: error: storage size of 'spec' isn't known
218 | union oac spec = {
| ^~~~
arch/s390/lib/uaccess.c:218:19: warning: unused variable 'spec'
[-Wunused-variable]
vim +/spec +65 arch/s390/lib/uaccess.c
60
61 static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr,
62 unsigned long size)
63 {
64 unsigned long tmp1, tmp2;
65 union oac spec = {
66 .oac2.as = PSW_BITS_AS_SECONDARY,
67 .oac2.a = 1,
68 };
69
70 tmp1 = -4096UL;
71 asm volatile(
72 " lr 0,%[spec]\n"
73 "0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
74 "6: jz 4f\n"
75 "1: algr %0,%3\n"
76 " slgr %1,%3\n"
77 " slgr %2,%3\n"
78 " j 0b\n"
79 "2: la %4,4095(%1)\n"/* %4 = ptr + 4095 */
80 " nr %4,%3\n" /* %4 = (ptr + 4095) & -4096 */
81 " slgr %4,%1\n"
82 " clgr %0,%4\n" /* copy crosses next page boundary? */
83 " jnh 5f\n"
84 "3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
85 "7: slgr %0,%4\n"
86 " j 5f\n"
87 "4: slgr %0,%0\n"
88 "5:\n"
89 EX_TABLE(0b,2b) EX_TABLE(3b,5b) EX_TABLE(6b,2b) EX_TABLE(7b,5b)
90 : "+a" (size), "+a" (ptr), "+a" (x), "+a"
(tmp1), "=a" (tmp2)
91 : [spec] "d" (spec.val)
92 : "cc", "memory", "0");
93 return size;
94 }
95
96 static inline unsigned long copy_from_user_mvcp(void *x, const void __user *ptr,
97 unsigned long size)
98 {
99 unsigned long tmp1, tmp2;
100
101 tmp1 = -256UL;
102 asm volatile(
103 " sacf 0\n"
104 "0: mvcp 0(%0,%2),0(%1),%3\n"
105 "7: jz 5f\n"
106 "1: algr %0,%3\n"
107 " la %1,256(%1)\n"
108 " la %2,256(%2)\n"
109 "2: mvcp 0(%0,%2),0(%1),%3\n"
110 "8: jnz 1b\n"
111 " j 5f\n"
112 "3: la %4,255(%1)\n" /* %4 = ptr + 255 */
113 " lghi %3,-4096\n"
114 " nr %4,%3\n" /* %4 = (ptr + 255) & -4096 */
115 " slgr %4,%1\n"
116 " clgr %0,%4\n" /* copy crosses next page boundary? */
117 " jnh 6f\n"
118 "4: mvcp 0(%4,%2),0(%1),%3\n"
119 "9: slgr %0,%4\n"
120 " j 6f\n"
121 "5: slgr %0,%0\n"
122 "6: sacf 768\n"
123 EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
124 EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b)
125 : "+a" (size), "+a" (ptr), "+a" (x), "+a"
(tmp1), "=a" (tmp2)
126 : : "cc", "memory");
127 return size;
128 }
129
130 unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long
n)
131 {
132 if (copy_with_mvcos())
133 return copy_from_user_mvcos(to, from, n);
134 return copy_from_user_mvcp(to, from, n);
135 }
136 EXPORT_SYMBOL(raw_copy_from_user);
137
138 static inline unsigned long copy_to_user_mvcos(void __user *ptr, const void *x,
139 unsigned long size)
140 {
141 unsigned long tmp1, tmp2;
142 union oac spec = {
143 .oac1.as = PSW_BITS_AS_SECONDARY,
144 .oac1.a = 1,
145 };
146
147 tmp1 = -4096UL;
148 asm volatile(
149 " lr 0,%[spec]\n"
150 "0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
151 "6: jz 4f\n"
152 "1: algr %0,%3\n"
153 " slgr %1,%3\n"
154 " slgr %2,%3\n"
155 " j 0b\n"
156 "2: la %4,4095(%1)\n"/* %4 = ptr + 4095 */
157 " nr %4,%3\n" /* %4 = (ptr + 4095) & -4096 */
158 " slgr %4,%1\n"
159 " clgr %0,%4\n" /* copy crosses next page boundary? */
160 " jnh 5f\n"
161 "3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
162 "7: slgr %0,%4\n"
163 " j 5f\n"
164 "4: slgr %0,%0\n"
165 "5:\n"
166 EX_TABLE(0b,2b) EX_TABLE(3b,5b) EX_TABLE(6b,2b) EX_TABLE(7b,5b)
167 : "+a" (size), "+a" (ptr), "+a" (x), "+a"
(tmp1), "=a" (tmp2)
168 : [spec] "d" (spec.val)
169 : "cc", "memory", "0");
170 return size;
171 }
172
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org