We should confirm the value of extent_map before calling trace_btrfs_get_extent() because the value of extent_map has the possibility of NULL. Signed-off-by: Tsutomu Itoh <t-itoh@xxxxxxxxxxxxxx> --- fs/btrfs/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index cad0c57..b8f53e8 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -6123,7 +6123,8 @@ insert: write_unlock(&em_tree->lock); out: - trace_btrfs_get_extent(root, em); + if (em) + trace_btrfs_get_extent(root, em); if (path) btrfs_free_path(path); -- 1.7.11.4 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
