diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2008-11-12 01:24:41 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-12 10:37:48 -0800 |
| commit | 1c1271850494f06b63ae6b485e2e1b9c27ffb2d1 (patch) | |
| tree | d077bacff7d7ce6a103e3627ca7c662d233a34f7 /mm/mmap.c | |
| parent | 08c1184fa2b785f23453b8cbb43f86b409cde3a6 (diff) | |
| download | lwn-1c1271850494f06b63ae6b485e2e1b9c27ffb2d1.tar.gz lwn-1c1271850494f06b63ae6b485e2e1b9c27ffb2d1.zip | |
parisc: fix find_extend_vma() breakage
The STACK_GROWSUP case of stack expansion was missing a test for 'prev',
which got removed by commit cb8f488c33539f096580e202f5438a809195008f
("mmap.c: deinline a few functions") by mistake.
I found my original email in "sent" folder. The patch in that mail
does NOT remove !prev. That change had beed added by someone else.
Ok, I think we are not much interested in who did it, let's
fix it for good.
[ "It looks like this was caused by me fixing rejects. That was the
fancy include-lots-of-context-so-it-wont-apply patch." - akpm ]
Reported-and-bisected-by: Helge Deller <deller@gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index de14ac21e5b5..d4855a682ab6 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1704,7 +1704,7 @@ find_extend_vma(struct mm_struct *mm, unsigned long addr) vma = find_vma_prev(mm, addr, &prev); if (vma && (vma->vm_start <= addr)) return vma; - if (expand_stack(prev, addr)) + if (!prev || expand_stack(prev, addr)) return NULL; if (prev->vm_flags & VM_LOCKED) { if (mlock_vma_pages_range(prev, addr, prev->vm_end) < 0) |