[Bug 210203] New: linux boot sometimes hang around scsi_try_target_reset for a system with SSD/SATA 1.92T *10

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

https://bugzilla.kernel.org/show_bug.cgi?id=210203

            Bug ID: 210203
           Summary: linux boot sometimes hang around scsi_try_target_reset
                    for a system with SSD/SATA 1.92T *10
           Product: IO/Storage
           Version: 2.5
    Kernel Version: 5.4.76 and other 5.4.x
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: SCSI
          Assignee: linux-scsi@xxxxxxxxxxxxxxx
          Reporter: wangyugui@xxxxxxxxxxxx
        Regression: No

Created attachment 293673
  --> https://bugzilla.kernel.org/attachment.cgi?id=293673&action=edit
sysrq-l-t-1.log

linux boot sometimes hang around scsi_try_target_reset for a system with
SSD/SATA 1.92T *10

console output:
        A start job is running for dev-disk-by\x2dlabel-OS_T604.device
                *** always waiting here

Failed to login, so only gathered SysRq info(saved in sysrq-l-t-1.log,
sysrq-l-t-2.log).
- sysrq l command
- sysrq t command

>From SysRq info, it seem a problem around scsi_try_target_reset();

[  744.388123] scsi_eh_9       S    0   604      2 0x80004000
[  744.388124] Call Trace:
[  744.388125]  __schedule+0x285/0x6e0
[  744.388126]  ? scsi_try_target_reset+0x90/0x90
[  744.388127]  schedule+0x2f/0xa0
[  744.388128]  scsi_error_handler+0x1c4/0x500
[  744.388129]  ? scsi_eh_get_sense+0x220/0x220
[  744.388130]  kthread+0x112/0x130
[  744.388131]  ? kthread_park+0x80/0x80
[  744.388132]  ret_from_fork+0x1f/0x40


Frequency: about 10%
   only happened in a server with btrfs RAID0 & 10 SSD.
   yet not happened in another two server with the same kernel

OS: centos 7.8/7.9
kernel version:
        5.4.76, 5.4.74, 5.4.73, and others 5.4.x

# lsscsi
[14:0:0:0]   disk    ATA      MK1920GFDKU      HPG0  /dev/sda
[14:0:1:0]   disk    ATA      MK1920GFDKU      HPG0  /dev/sdb
[14:0:2:0]   disk    ATA      MK1920GFDKU      HPG0  /dev/sdc
[14:0:3:0]   disk    ATA      MK1920GFDKU      HPG0  /dev/sdd
[14:0:4:0]   disk    ATA      MK1920GFDKU      HPG0  /dev/sde
[14:0:6:0]   disk    ATA      SAMSUNG MZ7KM1T9 003Q  /dev/sdf
[14:0:7:0]   disk    ATA      SAMSUNG MZ7KM1T9 003Q  /dev/sdg
[14:0:8:0]   disk    ATA      SAMSUNG MZ7KM1T9 003Q  /dev/sdh
[14:0:9:0]   disk    ATA      SAMSUNG MZ7KM1T9 003Q  /dev/sdi
[14:0:10:0]  disk    ATA      SAMSUNG MZ7KM1T9 003Q  /dev/sdj

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