Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 3e3b42fee621eeed029e224881073bc3e3b5cfa7 ("[PATCH v2 8/9] block, scsi, ide: Only process PM requests if rpm_status != RPM_ACTIVE") url: https://github.com/0day-ci/linux/commits/Bart-Van-Assche/Rework-runtime-suspend-and-SCSI-domain-validation/20201116-111041 base: https://git.kernel.org/cgit/linux/kernel/git/mkp/scsi.git for-next in testcase: blktests version: blktests-x86_64-e10add0-1_20201110 with following parameters: disk: 1SSD test: block-group1 ucode: 0xdc on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz with 32G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot [ 22.830983] sd 7:0:0:0: [sdc] Mode Sense: 00 00 00 00 [ 22.831051] sd 7:0:0:0: [sdc] Asking for cache data failed [ 22.835882] sd 4:0:0:0: [sdd] 0 512-byte logical blocks: (0 B/0 B) [ 22.835883] sd 4:0:0:0: [sdd] 0-byte physical blocks [ 22.835885] sd 4:0:0:0: [sdd] Write Protect is off [ 22.835886] sd 4:0:0:0: [sdd] Mode Sense: 00 00 00 00 [ 22.835887] sd 4:0:0:0: [sdd] Asking for cache data failed [ 22.835888] sd 4:0:0:0: [sdd] Assuming drive cache: write through [ 22.835978] sd 6:0:0:0: [sde] Read Capacity(16) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 22.840753] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 22.991295] sd 6:0:0:0: [sde] Sense not available. [ 22.996123] sd 6:0:0:0: [sde] Read Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 23.005523] sd 6:0:0:0: [sde] Sense not available. [ 23.005730] sd 7:0:0:0: [sdc] Read Capacity(16) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 23.010650] sd 6:0:0:0: [sde] 0 512-byte logical blocks: (0 B/0 B) [ 23.019700] sd 7:0:0:0: [sdc] Sense not available. [ 23.019763] sd 7:0:0:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 23.025881] sd 6:0:0:0: [sde] 0-byte physical blocks [ 23.026454] sd 6:0:0:0: [sde] Write Protect is off [ 23.030673] sd 7:0:0:0: [sdc] Sense not available. [ 23.031549] sd 4:0:0:0: [sdd] Read Capacity(16) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 23.040065] sd 6:0:0:0: [sde] Mode Sense: 00 00 00 00 [ 23.040655] sd 6:0:0:0: [sde] Asking for cache data failed ... [ 37.245634] sd 7:0:0:0: Power-on or device reset occurred [ 37.249853] sd 5:0:0:0: [sde] Sense not available. [ 37.250496] sd 5:0:0:0: [sde] 0 512-byte logical blocks: (0 B/0 B) [ 37.255363] sd 7:0:0:0: [sdf] Read Capacity(16) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 37.261864] sd 6:0:0:0: [sdd] Read Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 37.261865] sd 6:0:0:0: [sdd] Sense not available. [ 37.261869] sd 6:0:0:0: [sdd] 0 512-byte logical blocks: (0 B/0 B) [ 37.261874] sd 6:0:0:0: [sdd] Attached SCSI disk [ 37.263939] sd 5:0:0:0: [sde] Attached SCSI disk [ 37.268939] sd 7:0:0:0: [sdf] Sense not available. [ 37.269001] sd 7:0:0:0: [sdf] Read Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 37.277727] sd 4:0:0:0: [sdc] Read Capacity(16) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 37.282537] sd 7:0:0:0: [sdf] Sense not available. [ 37.282571] sd 7:0:0:0: [sdf] 0 512-byte logical blocks: (0 B/0 B) [ 37.290626] sd 4:0:0:0: [sdc] Sense not available. [ 37.291527] sd 4:0:0:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 37.296113] sd 7:0:0:0: [sdf] 0-byte physical blocks [ 37.296708] sd 7:0:0:0: [sdf] Write Protect is off [ 37.304248] sd 4:0:0:0: [sdc] Sense not available. [ 37.309716] sd 7:0:0:0: [sdf] Mode Sense: 00 00 00 00 [ 37.318267] sd 4:0:0:0: [sdc] Attached SCSI disk [ 37.323297] sd 7:0:0:0: [sdf] Asking for cache data failed [ 37.783441] sd 7:0:0:0: [sdf] Assuming drive cache: write through To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Oliver Sang