arch/arm/kernel/sys_oabi-compat.c:257:6: error: implicit declaration of function 'ep_op_has_event'

From: kernel test robot
Date: Thu Feb 18 2021 - 00:28:20 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f40ddce88593482919761f74910f42f4b84c004b
commit: c281634c865202e2776b0250678ff93c771947ff ARM: compat: remove KERNEL_DS usage in sys_oabi_epoll_ctl()
date: 10 months ago
config: arm-randconfig-m031-20210218 (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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c281634c865202e2776b0250678ff93c771947ff
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout c281634c865202e2776b0250678ff93c771947ff
# 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@xxxxxxxxx>

All errors (new ones prefixed by >>):

arch/arm/kernel/sys_oabi-compat.c:142:17: warning: no previous prototype for 'sys_oabi_stat64' [-Wmissing-prototypes]
142 | asmlinkage long sys_oabi_stat64(const char __user * filename,
| ^~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:152:17: warning: no previous prototype for 'sys_oabi_lstat64' [-Wmissing-prototypes]
152 | asmlinkage long sys_oabi_lstat64(const char __user * filename,
| ^~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:162:17: warning: no previous prototype for 'sys_oabi_fstat64' [-Wmissing-prototypes]
162 | asmlinkage long sys_oabi_fstat64(unsigned long fd,
| ^~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:172:17: warning: no previous prototype for 'sys_oabi_fstatat64' [-Wmissing-prototypes]
172 | asmlinkage long sys_oabi_fstatat64(int dfd,
| ^~~~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:229:17: warning: no previous prototype for 'sys_oabi_fcntl64' [-Wmissing-prototypes]
229 | asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
| ^~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:251:17: warning: no previous prototype for 'sys_oabi_epoll_ctl' [-Wmissing-prototypes]
251 | asmlinkage long sys_oabi_epoll_ctl(int epfd, int op, int fd,
| ^~~~~~~~~~~~~~~~~~
In file included from include/linux/kernel.h:11,
from include/linux/list.h:9,
from include/linux/wait.h:7,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from include/uapi/linux/aio_abi.h:31,
from include/linux/syscalls.h:74,
from arch/arm/kernel/sys_oabi-compat.c:73:
arch/arm/kernel/sys_oabi-compat.c: In function 'sys_oabi_epoll_ctl':
>> arch/arm/kernel/sys_oabi-compat.c:257:6: error: implicit declaration of function 'ep_op_has_event' [-Werror=implicit-function-declaration]
257 | if (ep_op_has_event(op) &&
| ^~~~~~~~~~~~~~~
include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var'
58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
arch/arm/kernel/sys_oabi-compat.c:257:2: note: in expansion of macro 'if'
257 | if (ep_op_has_event(op) &&
| ^~
>> arch/arm/kernel/sys_oabi-compat.c:264:9: error: implicit declaration of function 'do_epoll_ctl'; did you mean 'sys_epoll_ctl'? [-Werror=implicit-function-declaration]
264 | return do_epoll_ctl(epfd, op, fd, &kernel, false);
| ^~~~~~~~~~~~
| sys_epoll_ctl
arch/arm/kernel/sys_oabi-compat.c: At top level:
arch/arm/kernel/sys_oabi-compat.c:267:17: warning: no previous prototype for 'sys_oabi_epoll_wait' [-Wmissing-prototypes]
267 | asmlinkage long sys_oabi_epoll_wait(int epfd,
| ^~~~~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:309:17: warning: no previous prototype for 'sys_oabi_semtimedop' [-Wmissing-prototypes]
309 | asmlinkage long sys_oabi_semtimedop(int semid,
| ^~~~~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:352:17: warning: no previous prototype for 'sys_oabi_semop' [-Wmissing-prototypes]
352 | asmlinkage long sys_oabi_semop(int semid, struct oabi_sembuf __user *tsops,
| ^~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:358:16: warning: no previous prototype for 'sys_oabi_ipc' [-Wmissing-prototypes]
358 | asmlinkage int sys_oabi_ipc(uint call, int first, int second, int third,
| ^~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:376:17: warning: no previous prototype for 'sys_oabi_bind' [-Wmissing-prototypes]
376 | asmlinkage long sys_oabi_bind(int fd, struct sockaddr __user *addr, int addrlen)
| ^~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:386:17: warning: no previous prototype for 'sys_oabi_connect' [-Wmissing-prototypes]
386 | asmlinkage long sys_oabi_connect(int fd, struct sockaddr __user *addr, int addrlen)
| ^~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:396:17: warning: no previous prototype for 'sys_oabi_sendto' [-Wmissing-prototypes]
396 | asmlinkage long sys_oabi_sendto(int fd, void __user *buff,
| ^~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:409:17: warning: no previous prototype for 'sys_oabi_sendmsg' [-Wmissing-prototypes]
409 | asmlinkage long sys_oabi_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags)
| ^~~~~~~~~~~~~~~~
arch/arm/kernel/sys_oabi-compat.c:435:17: warning: no previous prototype for 'sys_oabi_socketcall' [-Wmissing-prototypes]
435 | asmlinkage long sys_oabi_socketcall(int call, unsigned long __user *args)
| ^~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/ep_op_has_event +257 arch/arm/kernel/sys_oabi-compat.c

> 73 #include <linux/syscalls.h>
74 #include <linux/errno.h>
75 #include <linux/fs.h>
76 #include <linux/cred.h>
77 #include <linux/fcntl.h>
78 #include <linux/eventpoll.h>
79 #include <linux/sem.h>
80 #include <linux/socket.h>
81 #include <linux/net.h>
82 #include <linux/ipc.h>
83 #include <linux/uaccess.h>
84 #include <linux/slab.h>
85
86 struct oldabi_stat64 {
87 unsigned long long st_dev;
88 unsigned int __pad1;
89 unsigned long __st_ino;
90 unsigned int st_mode;
91 unsigned int st_nlink;
92
93 unsigned long st_uid;
94 unsigned long st_gid;
95
96 unsigned long long st_rdev;
97 unsigned int __pad2;
98
99 long long st_size;
100 unsigned long st_blksize;
101 unsigned long long st_blocks;
102
103 unsigned long st_atime;
104 unsigned long st_atime_nsec;
105
106 unsigned long st_mtime;
107 unsigned long st_mtime_nsec;
108
109 unsigned long st_ctime;
110 unsigned long st_ctime_nsec;
111
112 unsigned long long st_ino;
113 } __attribute__ ((packed,aligned(4)));
114
115 static long cp_oldabi_stat64(struct kstat *stat,
116 struct oldabi_stat64 __user *statbuf)
117 {
118 struct oldabi_stat64 tmp;
119
120 tmp.st_dev = huge_encode_dev(stat->dev);
121 tmp.__pad1 = 0;
122 tmp.__st_ino = stat->ino;
123 tmp.st_mode = stat->mode;
124 tmp.st_nlink = stat->nlink;
125 tmp.st_uid = from_kuid_munged(current_user_ns(), stat->uid);
126 tmp.st_gid = from_kgid_munged(current_user_ns(), stat->gid);
127 tmp.st_rdev = huge_encode_dev(stat->rdev);
128 tmp.st_size = stat->size;
129 tmp.st_blocks = stat->blocks;
130 tmp.__pad2 = 0;
131 tmp.st_blksize = stat->blksize;
132 tmp.st_atime = stat->atime.tv_sec;
133 tmp.st_atime_nsec = stat->atime.tv_nsec;
134 tmp.st_mtime = stat->mtime.tv_sec;
135 tmp.st_mtime_nsec = stat->mtime.tv_nsec;
136 tmp.st_ctime = stat->ctime.tv_sec;
137 tmp.st_ctime_nsec = stat->ctime.tv_nsec;
138 tmp.st_ino = stat->ino;
139 return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
140 }
141
142 asmlinkage long sys_oabi_stat64(const char __user * filename,
143 struct oldabi_stat64 __user * statbuf)
144 {
145 struct kstat stat;
146 int error = vfs_stat(filename, &stat);
147 if (!error)
148 error = cp_oldabi_stat64(&stat, statbuf);
149 return error;
150 }
151
152 asmlinkage long sys_oabi_lstat64(const char __user * filename,
153 struct oldabi_stat64 __user * statbuf)
154 {
155 struct kstat stat;
156 int error = vfs_lstat(filename, &stat);
157 if (!error)
158 error = cp_oldabi_stat64(&stat, statbuf);
159 return error;
160 }
161
162 asmlinkage long sys_oabi_fstat64(unsigned long fd,
163 struct oldabi_stat64 __user * statbuf)
164 {
165 struct kstat stat;
166 int error = vfs_fstat(fd, &stat);
167 if (!error)
168 error = cp_oldabi_stat64(&stat, statbuf);
169 return error;
170 }
171
172 asmlinkage long sys_oabi_fstatat64(int dfd,
173 const char __user *filename,
174 struct oldabi_stat64 __user *statbuf,
175 int flag)
176 {
177 struct kstat stat;
178 int error;
179
180 error = vfs_fstatat(dfd, filename, &stat, flag);
181 if (error)
182 return error;
183 return cp_oldabi_stat64(&stat, statbuf);
184 }
185
186 struct oabi_flock64 {
187 short l_type;
188 short l_whence;
189 loff_t l_start;
190 loff_t l_len;
191 pid_t l_pid;
192 } __attribute__ ((packed,aligned(4)));
193
194 static long do_locks(unsigned int fd, unsigned int cmd,
195 unsigned long arg)
196 {
197 struct flock64 kernel;
198 struct oabi_flock64 user;
199 mm_segment_t fs;
200 long ret;
201
202 if (copy_from_user(&user, (struct oabi_flock64 __user *)arg,
203 sizeof(user)))
204 return -EFAULT;
205 kernel.l_type = user.l_type;
206 kernel.l_whence = user.l_whence;
207 kernel.l_start = user.l_start;
208 kernel.l_len = user.l_len;
209 kernel.l_pid = user.l_pid;
210
211 fs = get_fs();
212 set_fs(KERNEL_DS);
213 ret = sys_fcntl64(fd, cmd, (unsigned long)&kernel);
214 set_fs(fs);
215
216 if (!ret && (cmd == F_GETLK64 || cmd == F_OFD_GETLK)) {
217 user.l_type = kernel.l_type;
218 user.l_whence = kernel.l_whence;
219 user.l_start = kernel.l_start;
220 user.l_len = kernel.l_len;
221 user.l_pid = kernel.l_pid;
222 if (copy_to_user((struct oabi_flock64 __user *)arg,
223 &user, sizeof(user)))
224 ret = -EFAULT;
225 }
226 return ret;
227 }
228
229 asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
230 unsigned long arg)
231 {
232 switch (cmd) {
233 case F_OFD_GETLK:
234 case F_OFD_SETLK:
235 case F_OFD_SETLKW:
236 case F_GETLK64:
237 case F_SETLK64:
238 case F_SETLKW64:
239 return do_locks(fd, cmd, arg);
240
241 default:
242 return sys_fcntl64(fd, cmd, arg);
243 }
244 }
245
246 struct oabi_epoll_event {
247 __u32 events;
248 __u64 data;
249 } __attribute__ ((packed,aligned(4)));
250
251 asmlinkage long sys_oabi_epoll_ctl(int epfd, int op, int fd,
252 struct oabi_epoll_event __user *event)
253 {
254 struct oabi_epoll_event user;
255 struct epoll_event kernel;
256
> 257 if (ep_op_has_event(op) &&
258 copy_from_user(&user, event, sizeof(user)))
259 return -EFAULT;
260
261 kernel.events = user.events;
262 kernel.data = user.data;
263
> 264 return do_epoll_ctl(epfd, op, fd, &kernel, false);
265 }
266

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
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Next message: Calvin Johnson: "[net-next PATCH v6 00/15] ACPI support for dpaa2 driver"
Previous message: Michael Kelley: "RE: [PATCH v3] scsi: storvsc: Parameterize number hardware queues"
Next in thread: Randy Dunlap: "Re: arch/arm/kernel/sys_oabi-compat.c:257:6: error: implicit declaration of function 'ep_op_has_event'"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]