Btrfs: add NULL check for do_walk_down()

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btrfs_find_create_tree_block() may return NULL, so we must check the returned
value, or we will access a NULL pointer.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Miao Xie 2010-03-25 12:37:12 +00:00 • committed by Chris Mason

parent 2f3014fc2a

commit 90d2c51dbb

1 changed files with 4 additions and 1 deletions

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fs/btrfs/extent-tree.c

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