* [dhowells-fs:ceph-iter 1/18] lib/iov_iter.c:582:9: sparse: sparse: incorrect type in argument 1 (different address spaces)
@ 2023-08-08 7:21 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2023-08-08 7:21 UTC (permalink / raw)
To: David Howells; +Cc: oe-kbuild-all
tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git ceph-iter
head: 672499b5bfaeda1769d9eab9c9a08f4c2b2e4bf5
commit: f008e454544ebdcf3742c4d4e3d06abe5868be00 [1/18] iov_iter: Add function to see if buffer is all zeros
config: x86_64-randconfig-r071-20230807 (https://download.01.org/0day-ci/archive/20230808/202308081520.3nhfaFPs-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230808/202308081520.3nhfaFPs-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/202308081520.3nhfaFPs-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> lib/iov_iter.c:582:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *const p @@ got void [noderef] __user *[assigned] base @@
lib/iov_iter.c:582:9: sparse: expected void const *const p
lib/iov_iter.c:582:9: sparse: got void [noderef] __user *[assigned] base
lib/iov_iter.c:582:9: sparse: sparse: subtraction of different types can't work (different address spaces)
lib/iov_iter.c:582:9: sparse: sparse: subtraction of different types can't work (different address spaces)
lib/iov_iter.c: note: in included file (through arch/x86/include/asm/uaccess.h, include/linux/uaccess.h, include/linux/sched/task.h, ...):
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
lib/iov_iter.c: note: in included file:
include/net/checksum.h:33:39: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __wsum [usertype] sum @@ got unsigned int @@
include/net/checksum.h:33:39: sparse: expected restricted __wsum [usertype] sum
include/net/checksum.h:33:39: sparse: got unsigned int
include/net/checksum.h:33:39: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __wsum [usertype] sum @@ got unsigned int @@
include/net/checksum.h:33:39: sparse: expected restricted __wsum [usertype] sum
include/net/checksum.h:33:39: sparse: got unsigned int
include/net/checksum.h:41:45: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __wsum [usertype] sum @@ got unsigned int @@
include/net/checksum.h:41:45: sparse: expected restricted __wsum [usertype] sum
include/net/checksum.h:41:45: sparse: got unsigned int
include/net/checksum.h:41:45: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __wsum [usertype] sum @@ got unsigned int @@
include/net/checksum.h:41:45: sparse: expected restricted __wsum [usertype] sum
include/net/checksum.h:41:45: sparse: got unsigned int
lib/iov_iter.c: note: in included file (through arch/x86/include/asm/uaccess.h, include/linux/uaccess.h, include/linux/sched/task.h, ...):
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression
vim +582 lib/iov_iter.c
568
569 /**
570 * iov_iter_is_zero - Return true if the buffer is entirely zeroed
571 * @i: The iterator describing the buffer
572 * @count: Amount of buffer to scan
573 *
574 * Scans the specified amount of the supplied buffer and returns true if only
575 * zero bytes are found therein and false otherwise.
576 */
577 bool iov_iter_is_zero(const struct iov_iter *i, size_t count)
578 {
579 struct iov_iter j = *i, *pj = &j;
580 void *p;
581
> 582 iterate_and_advance(pj, count, base, len, count,
583 ({ p = memchr_inv(base, 0, len); p ? p - base : len; }),
584 ({ p = memchr_inv(base, 0, len); p ? p - base : len; })
585 )
586
587 return !count;
588 }
589 EXPORT_SYMBOL(iov_iter_is_zero);
590
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* [dhowells-fs:ceph-iter 1/18] lib/iov_iter.c:582:9: sparse: sparse: incorrect type in argument 1 (different address spaces)
@ 2023-08-07 5:32 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2023-08-07 5:32 UTC (permalink / raw)
To: David Howells; +Cc: oe-kbuild-all
tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git ceph-iter
head: 672499b5bfaeda1769d9eab9c9a08f4c2b2e4bf5
commit: f008e454544ebdcf3742c4d4e3d06abe5868be00 [1/18] iov_iter: Add function to see if buffer is all zeros
config: powerpc-randconfig-r081-20230807 (https://download.01.org/0day-ci/archive/20230807/202308071349.NFP7QACA-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230807/202308071349.NFP7QACA-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/202308071349.NFP7QACA-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> lib/iov_iter.c:582:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *s @@ got void [noderef] __user *[assigned] base @@
lib/iov_iter.c:582:9: sparse: expected void const *s
lib/iov_iter.c:582:9: sparse: got void [noderef] __user *[assigned] base
>> lib/iov_iter.c:582:9: sparse: sparse: subtraction of different types can't work (different address spaces)
>> lib/iov_iter.c:582:9: sparse: sparse: subtraction of different types can't work (different address spaces)
vim +582 lib/iov_iter.c
568
569 /**
570 * iov_iter_is_zero - Return true if the buffer is entirely zeroed
571 * @i: The iterator describing the buffer
572 * @count: Amount of buffer to scan
573 *
574 * Scans the specified amount of the supplied buffer and returns true if only
575 * zero bytes are found therein and false otherwise.
576 */
577 bool iov_iter_is_zero(const struct iov_iter *i, size_t count)
578 {
579 struct iov_iter j = *i, *pj = &j;
580 void *p;
581
> 582 iterate_and_advance(pj, count, base, len, count,
583 ({ p = memchr_inv(base, 0, len); p ? p - base : len; }),
584 ({ p = memchr_inv(base, 0, len); p ? p - base : len; })
585 )
586
587 return !count;
588 }
589 EXPORT_SYMBOL(iov_iter_is_zero);
590
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
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