* fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
@ 2023-05-09 13:55 kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2023-05-09 13:55 UTC (permalink / raw)
To: Jens Axboe; +Cc: oe-kbuild-all, linux-kernel
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ba0ad6ed89fd5dada3b7b65ef2b08e95d449d4ab
commit: 0f99fc513ddd28de155c58547824a9fd63daacea splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
date: 2 weeks ago
config: loongarch-randconfig-s052-20230507 (https://download.01.org/0day-ci/archive/20230509/202305092109.6raeJ4wr-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f99fc513ddd28de155c58547824a9fd63daacea
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 0f99fc513ddd28de155c58547824a9fd63daacea
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=loongarch olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=loongarch SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305092109.6raeJ4wr-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast to restricted fmode_t
vim +53 fs/splice.c
39
40 /*
41 * Splice doesn't support FMODE_NOWAIT. Since pipes may set this flag to
42 * indicate they support non-blocking reads or writes, we must clear it
43 * here if set to avoid blocking other users of this pipe if splice is
44 * being done on it.
45 */
46 static noinline void noinline pipe_clear_nowait(struct file *file)
47 {
48 fmode_t fmode = READ_ONCE(file->f_mode);
49
50 do {
51 if (!(fmode & FMODE_NOWAIT))
52 break;
> 53 } while (!try_cmpxchg(&file->f_mode, &fmode, fmode & ~FMODE_NOWAIT));
54 }
55
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
^ permalink raw reply [flat|nested] 6+ messages in thread
* fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
@ 2024-01-04 3:48 kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2024-01-04 3:48 UTC (permalink / raw)
To: Jens Axboe; +Cc: oe-kbuild-all, linux-kernel
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ac865f00af293d081356bec56eea90815094a60e
commit: 0f99fc513ddd28de155c58547824a9fd63daacea splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
date: 8 months ago
config: csky-randconfig-r013-20230825 (https://download.01.org/0day-ci/archive/20240104/202401041120.Cr5feSew-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20240104/202401041120.Cr5feSew-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401041120.Cr5feSew-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast to restricted fmode_t
fs/splice.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
include/linux/page-flags.h:246:46: sparse: sparse: self-comparison always evaluates to false
vim +53 fs/splice.c
39
40 /*
41 * Splice doesn't support FMODE_NOWAIT. Since pipes may set this flag to
42 * indicate they support non-blocking reads or writes, we must clear it
43 * here if set to avoid blocking other users of this pipe if splice is
44 * being done on it.
45 */
46 static noinline void noinline pipe_clear_nowait(struct file *file)
47 {
48 fmode_t fmode = READ_ONCE(file->f_mode);
49
50 do {
51 if (!(fmode & FMODE_NOWAIT))
52 break;
> 53 } while (!try_cmpxchg(&file->f_mode, &fmode, fmode & ~FMODE_NOWAIT));
54 }
55
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 6+ messages in thread
* fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
@ 2024-01-03 23:03 kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2024-01-03 23:03 UTC (permalink / raw)
To: Jens Axboe; +Cc: oe-kbuild-all, linux-kernel
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 610a9b8f49fbcf1100716370d3b5f6f884a2835a
commit: 0f99fc513ddd28de155c58547824a9fd63daacea splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
date: 8 months ago
config: arm64-buildonly-randconfig-r004-20230608 (https://download.01.org/0day-ci/archive/20240104/202401040601.Ju49YpNa-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20240104/202401040601.Ju49YpNa-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401040601.Ju49YpNa-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast to restricted fmode_t
fs/splice.c: note: in included file (through include/linux/irqflags.h, include/linux/spinlock.h, include/linux/wait.h, ...):
arch/arm64/include/asm/percpu.h:127:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
arch/arm64/include/asm/percpu.h:127:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
arch/arm64/include/asm/percpu.h:127:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
arch/arm64/include/asm/percpu.h:127:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
vim +53 fs/splice.c
39
40 /*
41 * Splice doesn't support FMODE_NOWAIT. Since pipes may set this flag to
42 * indicate they support non-blocking reads or writes, we must clear it
43 * here if set to avoid blocking other users of this pipe if splice is
44 * being done on it.
45 */
46 static noinline void noinline pipe_clear_nowait(struct file *file)
47 {
48 fmode_t fmode = READ_ONCE(file->f_mode);
49
50 do {
51 if (!(fmode & FMODE_NOWAIT))
52 break;
> 53 } while (!try_cmpxchg(&file->f_mode, &fmode, fmode & ~FMODE_NOWAIT));
54 }
55
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 6+ messages in thread
* fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
@ 2023-11-17 18:52 kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2023-11-17 18:52 UTC (permalink / raw)
To: Jens Axboe; +Cc: oe-kbuild-all, linux-kernel
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 6bc40e44f1ddef16a787f3501b97f1fff909177c
commit: 0f99fc513ddd28de155c58547824a9fd63daacea splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
date: 7 months ago
config: sparc-randconfig-r021-20230427 (https://download.01.org/0day-ci/archive/20231118/202311180228.sLGuM7AA-lkp@intel.com/config)
compiler: sparc-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20231118/202311180228.sLGuM7AA-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311180228.sLGuM7AA-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast to restricted fmode_t
fs/splice.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
include/linux/page-flags.h:246:46: sparse: sparse: self-comparison always evaluates to false
vim +53 fs/splice.c
39
40 /*
41 * Splice doesn't support FMODE_NOWAIT. Since pipes may set this flag to
42 * indicate they support non-blocking reads or writes, we must clear it
43 * here if set to avoid blocking other users of this pipe if splice is
44 * being done on it.
45 */
46 static noinline void noinline pipe_clear_nowait(struct file *file)
47 {
48 fmode_t fmode = READ_ONCE(file->f_mode);
49
50 do {
51 if (!(fmode & FMODE_NOWAIT))
52 break;
> 53 } while (!try_cmpxchg(&file->f_mode, &fmode, fmode & ~FMODE_NOWAIT));
54 }
55
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 6+ messages in thread
* fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
@ 2023-11-16 3:26 kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2023-11-16 3:26 UTC (permalink / raw)
To: Jens Axboe; +Cc: oe-kbuild-all, linux-kernel
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c42d9eeef8e5ba9292eda36fd8e3c11f35ee065c
commit: 0f99fc513ddd28de155c58547824a9fd63daacea splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
date: 7 months ago
config: sparc-randconfig-r021-20230427 (https://download.01.org/0day-ci/archive/20231116/202311161151.kqFAHfLD-lkp@intel.com/config)
compiler: sparc-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20231116/202311161151.kqFAHfLD-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311161151.kqFAHfLD-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast to restricted fmode_t
fs/splice.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
include/linux/page-flags.h:246:46: sparse: sparse: self-comparison always evaluates to false
vim +53 fs/splice.c
39
40 /*
41 * Splice doesn't support FMODE_NOWAIT. Since pipes may set this flag to
42 * indicate they support non-blocking reads or writes, we must clear it
43 * here if set to avoid blocking other users of this pipe if splice is
44 * being done on it.
45 */
46 static noinline void noinline pipe_clear_nowait(struct file *file)
47 {
48 fmode_t fmode = READ_ONCE(file->f_mode);
49
50 do {
51 if (!(fmode & FMODE_NOWAIT))
52 break;
> 53 } while (!try_cmpxchg(&file->f_mode, &fmode, fmode & ~FMODE_NOWAIT));
54 }
55
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 6+ messages in thread
* fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
@ 2023-11-15 23:11 kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2023-11-15 23:11 UTC (permalink / raw)
To: Jens Axboe; +Cc: oe-kbuild-all, linux-kernel
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c42d9eeef8e5ba9292eda36fd8e3c11f35ee065c
commit: 0f99fc513ddd28de155c58547824a9fd63daacea splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
date: 7 months ago
config: sparc64-randconfig-r025-20230806 (https://download.01.org/0day-ci/archive/20231116/202311160739.F2W0koQB-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20231116/202311160739.F2W0koQB-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311160739.F2W0koQB-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t
>> fs/splice.c:53:19: sparse: sparse: cast to restricted fmode_t
vim +53 fs/splice.c
39
40 /*
41 * Splice doesn't support FMODE_NOWAIT. Since pipes may set this flag to
42 * indicate they support non-blocking reads or writes, we must clear it
43 * here if set to avoid blocking other users of this pipe if splice is
44 * being done on it.
45 */
46 static noinline void noinline pipe_clear_nowait(struct file *file)
47 {
48 fmode_t fmode = READ_ONCE(file->f_mode);
49
50 do {
51 if (!(fmode & FMODE_NOWAIT))
52 break;
> 53 } while (!try_cmpxchg(&file->f_mode, &fmode, fmode & ~FMODE_NOWAIT));
54 }
55
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-01-04 3:49 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2023-05-09 13:55 fs/splice.c:53:19: sparse: sparse: cast from restricted fmode_t kernel test robot
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