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authorDavid Miller <davem@davemloft.net>2007-02-28 20:13:13 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-01 14:53:38 -0800
commitd1af65d13f3625543916a85c86d02826df910fcf (patch)
tree6f04906a3837bd92d89751925e2b4937439e74c0 /mm/mmap.c
parent04a51e66adcdc0de6ffaa488934ce3ffb3818ecf (diff)
downloadop-kernel-dev-d1af65d13f3625543916a85c86d02826df910fcf.zip
op-kernel-dev-d1af65d13f3625543916a85c86d02826df910fcf.tar.gz
[PATCH] Bug in MM_RB debugging
The code is seemingly trying to make sure that rb_next() brings us to successive increasing vma entries. But the two variables, prev and pend, used to perform these checks, are never advanced. Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Andrea Arcangeli <andrea@novell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index eb509ae..84f997d 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -299,6 +299,8 @@ static int browse_rb(struct rb_root *root)
printk("vm_end %lx < vm_start %lx\n", vma->vm_end, vma->vm_start);
i++;
pn = nd;
+ prev = vma->vm_start;
+ pend = vma->vm_end;
}
j = 0;
for (nd = pn; nd; nd = rb_prev(nd)) {
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