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Since ch has already been de-referenced by the time we get to the BUG_ON, it is useless. The back trace alone is enough to tell what is going on, delete the redundant BUG_ON. Link: https://lore.kernel.org/r/20191217194437.25568-1-pakki001@umn.edu Signed-off-by: Aditya Pakki <pakki001@umn.edu> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>