Btrfs: fix double free in find_lock_delalloc_range
We need to NULL the cached_state after freeing it, otherwise we might free it again if find_delalloc_range doesn't find anything. Signed-off-by: Chris Mason <clm@fb.com> cc: stable@vger.kernel.org
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@ -1693,6 +1693,7 @@ again:
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* shortening the size of the delalloc range we're searching
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*/
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free_extent_state(cached_state);
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cached_state = NULL;
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if (!loops) {
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max_bytes = PAGE_CACHE_SIZE;
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loops = 1;
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