[598428.945633] BUG: kernel NULL pointer dereference, address: 0000000000000038 ... [598428.945749] Workqueue: cifsoplockd cifs_oplock_break [cifs] [598428.945793] RIP: 0010:smb2_push_mandatory_locks+0xd6/0x5a0 [cifs] ... [598428.945834] Call Trace: [598428.945870] ? cifs_revalidate_mapping+0x45/0x90 [cifs] [598428.945901] cifs_oplock_break+0x13d/0x450 [cifs] [598428.945909] process_one_work+0x1db/0x380 [598428.945914] worker_thread+0x4d/0x400 [598428.945921] kthread+0x104/0x140 [598428.945925] ? process_one_work+0x380/0x380 [598428.945931] ? kthread_park+0x80/0x80 [598428.945937] ret_from_fork+0x35/0x40
[598428.945633] BUG: kernel NULL pointer dereference, address: 0000000000000038 push_mandatory_ locks+0xd6/ 0x5a0 [cifs] _mapping+ 0x45/0x90 [cifs] break+0x13d/ 0x450 [cifs] one_work+ 0x1db/0x380 thread+ 0x4d/0x400 one_work+ 0x380/0x380 park+0x80/ 0x80 fork+0x35/ 0x40
...
[598428.945749] Workqueue: cifsoplockd cifs_oplock_break [cifs]
[598428.945793] RIP: 0010:smb2_
...
[598428.945834] Call Trace:
[598428.945870] ? cifs_revalidate
[598428.945901] cifs_oplock_
[598428.945909] process_
[598428.945914] worker_
[598428.945921] kthread+0x104/0x140
[598428.945925] ? process_
[598428.945931] ? kthread_
[598428.945937] ret_from_