Messages in this thread Patch in this message | | | Date | Fri, 4 Jun 2010 23:10:25 +0200 | From | Adam Lackorzynski <> | Subject | [PATCH] early_res: fix check in free_early_partial |
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free_early_partial must check the returned region of find_overlapped_early() whether it is a region at all. Otherwise the function will indefinitely loop.
Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de> --- kernel/early_res.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/early_res.c b/kernel/early_res.c index 31aa933..9afcb4c 100644 --- a/kernel/early_res.c +++ b/kernel/early_res.c @@ -341,10 +341,11 @@ void __init free_early_partial(u64 start, u64 end) try_next: i = find_overlapped_early(start, end); - if (i >= max_early_res) + r = &early_res[i]; + + if (i >= max_early_res || !r->end) return; - r = &early_res[i]; /* hole ? */ if (r->end >= end && r->start <= start) { drop_range_partial(i, start, end); -- 1.7.1
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