On Fri, 2018-02-09 at 19:58 +0000, Alex Richman wrote: > Feb 9 11:55:05 Space kernel: [58801.943460] BUG: scheduling while > atomic: ksoftirqd/19/85/0x00000100 > [ ... ] > Feb 9 11:55:05 Space kernel: [58801.943546] [<ffffffffaf0b14e7>] > msleep+0x37/0x50 > Feb 9 11:55:05 Space kernel: [58801.943552] [<ffffffffc0342af2>] > arcmsr_queue_command+0x82/0xf40 [arcmsr] > [ ... ] (+Ching Huang) A SCSI .queuecommand() implementation must not sleep so I think this is a driver bug. Since I'm not familiar with the arcmsr driver I have CC'ed Ching Huang. I hope that he will be able to help you. Bart.