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If the list is uninitialized (next pointer is NULL), list_for_each gets stuck in an infinite loop. Print a message and treat list as empty. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: George Prekas <[email protected]> Reviewed-by: Jan Kiszka <[email protected]> Cc: Kieran Bingham <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>