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[PATCH] Bug in MM_RB debugging

Browse source 
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 <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
David Miller 2007-02-28 20:13:13 -08:00 • committed by Linus Torvalds
commit d1af65d13f
1 changed files with 2 additions and 0 deletions
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2
mm/mmap.c
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@ -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)) {