Re: [PATCH v3 2/3] fanotify: define struct members to hold response decision context
From: kernel test robot
Date: Tue May 17 2022 - 03:27:30 EST
Hi Richard,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on jack-fs/fsnotify]
[also build test WARNING on pcmoore-audit/next linux/master linus/master v5.18-rc7 next-20220516]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/intel-lab-lkp/linux/commits/Richard-Guy-Briggs/fanotify-Allow-user-space-to-pass-back-additional-audit-info/20220517-044904
base: https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git fsnotify
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20220517/202205171508.anzweWlm-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 11.3.0
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/intel-lab-lkp/linux/commit/4d1fc23ae264424a2007ef5a3cfc1b4dbc8d82db
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Richard-Guy-Briggs/fanotify-Allow-user-space-to-pass-back-additional-audit-info/20220517-044904
git checkout 4d1fc23ae264424a2007ef5a3cfc1b4dbc8d82db
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash fs/notify/fanotify/
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 include/asm-generic/bug.h:22,
from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/thread_info.h:13,
from include/asm-generic/preempt.h:5,
from ./arch/m68k/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from arch/m68k/include/asm/irqflags.h:6,
from include/linux/irqflags.h:16,
from arch/m68k/include/asm/atomic.h:6,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/sysctl.h:26,
from include/linux/fanotify.h:5,
from fs/notify/fanotify/fanotify_user.c:2:
fs/notify/fanotify/fanotify_user.c: In function 'process_access_response':
>> fs/notify/fanotify/fanotify_user.c:325:18: warning: format '%lu' expects argument of type 'long unsigned int', but argument 8 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
325 | pr_debug("%s: group=%p fd=%d response=%u type=%u size=%lu\n", __func__,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/printk.h:336:21: note: in definition of macro 'pr_fmt'
336 | #define pr_fmt(fmt) fmt
| ^~~
include/linux/dynamic_debug.h:152:9: note: in expansion of macro '__dynamic_func_call'
152 | __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/dynamic_debug.h:162:9: note: in expansion of macro '_dynamic_func_call'
162 | _dynamic_func_call(fmt, __dynamic_pr_debug, \
| ^~~~~~~~~~~~~~~~~~
include/linux/printk.h:570:9: note: in expansion of macro 'dynamic_pr_debug'
570 | dynamic_pr_debug(fmt, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~
fs/notify/fanotify/fanotify_user.c:325:9: note: in expansion of macro 'pr_debug'
325 | pr_debug("%s: group=%p fd=%d response=%u type=%u size=%lu\n", __func__,
| ^~~~~~~~
fs/notify/fanotify/fanotify_user.c:325:65: note: format string is defined here
325 | pr_debug("%s: group=%p fd=%d response=%u type=%u size=%lu\n", __func__,
| ~~^
| |
| long unsigned int
| %u
vim +325 fs/notify/fanotify/fanotify_user.c
316
317 static int process_access_response(struct fsnotify_group *group,
318 struct fanotify_response *response_struct,
319 size_t count)
320 {
321 struct fanotify_perm_event *event;
322 int fd = response_struct->fd;
323 u32 response = response_struct->response;
324
> 325 pr_debug("%s: group=%p fd=%d response=%u type=%u size=%lu\n", __func__,
326 group, fd, response, response_struct->extra_info_type, count);
327 if (fd < 0)
328 return -EINVAL;
329 /*
330 * make sure the response is valid, if invalid we do nothing and either
331 * userspace can send a valid response or we will clean it up after the
332 * timeout
333 */
334 if (FAN_INVALID_RESPONSE_MASK(response))
335 return -EINVAL;
336 if ((response & FAN_AUDIT) && !FAN_GROUP_FLAG(group, FAN_ENABLE_AUDIT))
337 return -EINVAL;
338 if (response & FAN_EXTRA) {
339 if (count < offsetofend(struct fanotify_response, extra_info_type))
340 return -EINVAL;
341 switch (response_struct->extra_info_type) {
342 case FAN_RESPONSE_INFO_NONE:
343 break;
344 case FAN_RESPONSE_INFO_AUDIT_RULE:
345 if (count < offsetofend(struct fanotify_response, extra_info))
346 return -EINVAL;
347 break;
348 default:
349 return -EINVAL;
350 }
351 }
352 spin_lock(&group->notification_lock);
353 list_for_each_entry(event, &group->fanotify_data.access_list,
354 fae.fse.list) {
355 if (event->fd != fd)
356 continue;
357
358 list_del_init(&event->fae.fse.list);
359 finish_permission_event(group, event, response_struct);
360 wake_up(&group->fanotify_data.access_waitq);
361 return 0;
362 }
363 spin_unlock(&group->notification_lock);
364
365 return -ENOENT;
366 }
367
--
0-DAY CI Kernel Test Service
https://01.org/lkp