NULL pointer dereference in process_one_work

Hi,tj and jiangshan, I build a ceph storage pool to run some benchmarks with 3.10 kernel. Occasionally, when the cpus' load is very high, some nodes crash with message below. [292273.612014] BUG: unable to handle kernel NULL pointer dereference at 0008 [292273.612057] IP: []

NULL pointer dereference in process_one_work

Hi,tj and jiangshan, I build a ceph storage pool to run some benchmarks with 3.10 kernel. Occasionally, when the cpus' load is very high, some nodes crash with message below. [292273.612014] BUG: unable to handle kernel NULL pointer dereference at 0008 [292273.612057] IP: []