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| author | Linus Walleij <linus.walleij@linaro.org> | 2015-01-20 11:03:07 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-01-20 11:03:07 +0100 |
| commit | ee65ef609aa81539ac3792df88f04bfe29a77546 (patch) | |
| tree | 6816eaa3d45fa1078408f2ccfa5f88d32733d1d9 /mm/mmap.c | |
| parent | 7a839e9a277d4a410a9b015d561ff09739bc0ff6 (diff) | |
| parent | ec6f34e5b552fb0a52e6aae1a5afbbb1605cc6cc (diff) | |
| download | linux-ee65ef609aa81539ac3792df88f04bfe29a77546.tar.bz2 | |
Merge tag 'v3.19-rc5' into devel
Linux 3.19-rc5
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 7b36aa7cc89a..7f684d5a8087 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -778,10 +778,12 @@ again: remove_next = 1 + (end > next->vm_end); if (exporter && exporter->anon_vma && !importer->anon_vma) { int error; + importer->anon_vma = exporter->anon_vma; error = anon_vma_clone(importer, exporter); - if (error) + if (error) { + importer->anon_vma = NULL; return error; - importer->anon_vma = exporter->anon_vma; + } } } @@ -2099,14 +2101,17 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns { struct mm_struct *mm = vma->vm_mm; struct rlimit *rlim = current->signal->rlim; - unsigned long new_start; + unsigned long new_start, actual_size; /* address space limit tests */ if (!may_expand_vm(mm, grow)) return -ENOMEM; /* Stack limit test */ - if (size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur)) + actual_size = size; + if (size && (vma->vm_flags & (VM_GROWSUP | VM_GROWSDOWN))) + actual_size -= PAGE_SIZE; + if (actual_size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur)) return -ENOMEM; /* mlock limit tests */ |