tree: git://git.cmpxchg.org/linux-mmotm.git master
head: 61f5f835b6f06fbc233481b5d3c0afd71ecf54e8
commit: b9e95c5dd1134d35b6c9aeaa3967ab5b3945ba73 [371/385] mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff()
reproduce:
# apt-get install sparse
git checkout b9e95c5dd1134d35b6c9aeaa3967ab5b3945ba73
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> arch/x86/mm/mpx.c:71:54: sparse: implicit cast to nocast type
arch/x86/mm/mpx.c:312:27: sparse: incompatible types in comparison expression (different address spaces)
--
>> include/linux/mm.h:1812:54: sparse: implicit cast to nocast type
--
mm/mmap.c:1343:47: sparse: implicit cast to nocast type
mm/mmap.c:1345:45: sparse: implicit cast to nocast type
mm/mmap.c:1354:45: sparse: implicit cast to nocast type
mm/mmap.c:1375:47: sparse: implicit cast to nocast type
mm/mmap.c:1395:37: sparse: implicit cast to nocast type
mm/mmap.c:1399:37: sparse: implicit cast to nocast type
mm/mmap.c:1443:33: sparse: implicit cast to nocast type
mm/mmap.c:1578:29: sparse: implicit cast to nocast type
mm/internal.h:253:43: sparse: implicit cast to nocast type
mm/mmap.c:2650:37: sparse: implicit cast to nocast type
mm/mmap.c:2690:34: sparse: implicit cast to nocast type
mm/mmap.c:2693:34: sparse: implicit cast to nocast type
>> include/linux/mm.h:1812:54: sparse: implicit cast to nocast type
mm/internal.h:253:43: sparse: implicit cast to nocast type
vim +71 arch/x86/mm/mpx.c
55 * bounds tables (the bounds directory is user-allocated).
56 *
57 * Later on, we use the vma->vm_ops to uniquely identify these
58 * VMAs.
59 */
60 static unsigned long mpx_mmap(unsigned long len)
61 {
62 struct mm_struct *mm = current->mm;
63 unsigned long addr, populate;
64
65 /* Only bounds table can be allocated here */
66 if (len != mpx_bt_size_bytes(mm))
67 return -EINVAL;
68
69 down_write(&mm->mmap_sem);
70 addr = do_mmap(NULL, 0, len, PROT_READ | PROT_WRITE,
> 71 MAP_ANONYMOUS | MAP_PRIVATE, VM_MPX, 0, &populate);
72 up_write(&mm->mmap_sem);
73 if (populate)
74 mm_populate(addr, populate);
75
76 return addr;
77 }
78
79 enum reg_type {
---
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