System stall with lockups using smartpqi adapter

Issue

• System stall with lockups using smartpqi adapter:

[68403.253474] watchdog: BUG: soft lockup - CPU#12 stuck for 22s! [tp_osd_tp:17959]

• Commands stuck in pqi_alloc_io_request():

PID: 17806  TASK: ffff8e8e90e20000  CPU: 0   COMMAND: "tp_osd_tp"
 #0 [fffffe0000007c98] machine_kexec at ffffffff8ca5bf2e
 #1 [fffffe0000007cf0] __crash_kexec at ffffffff8cb6051d
 #2 [fffffe0000007db8] panic at ffffffff8cab5e07
 #3 [fffffe0000007e40] hpwdt_pretimeout at ffffffffc02c46ff [hpwdt]
 #4 [fffffe0000007e60] nmi_handle at ffffffff8ca23703
 #5 [fffffe0000007eb8] unknown_nmi_error at ffffffff8ca23a46
 #6 [fffffe0000007ed0] do_nmi at ffffffff8ca23cb8
 #7 [fffffe0000007ef0] end_repeat_nmi at ffffffff8d4016d4
    [exception RIP: pqi_alloc_io_request+51]
    RIP: ffffffffc0456033  RSP: ffffb0bc4b3338a8  RFLAGS: 00000202
    RAX: 0000000000000001  RBX: 0000000000000001  RCX: ffff8e86fcfa5e20
    RDX: 00000000000000fb  RSI: 0000000000000001  RDI: ffff8e86fcf88000
    RBP: ffff8e86fcf88000   R8: 000000000000000a   R9: ffff8e86fcf88768
    R10: 000000001416844f  R11: 0000000000000000  R12: ffff8e86fcf88000
    R13: 0000000000000000  R14: ffff8e86fdbb8838  R15: ffffb0bc4b333958
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
--- <NMI exception stack> ---
 #8 [ffffb0bc4b3338a8] pqi_alloc_io_request at ffffffffc0456033 [smartpqi]
 #9 [ffffb0bc4b3338a8] pqi_aio_submit_io at ffffffffc0457d5a [smartpqi]
#10 [ffffb0bc4b3338f8] pqi_scsi_queue_command at ffffffffc045fbcc [smartpqi]
#11 [ffffb0bc4b3339a0] scsi_queue_rq at ffffffff8cfdaec3
#12 [ffffb0bc4b3339f0] __blk_mq_try_issue_directly at ffffffff8ce0a0de
#13 [ffffb0bc4b333a40] blk_mq_try_issue_directly at ffffffff8ce0a246
#14 [ffffb0bc4b333a68] blk_mq_make_request at ffffffff8ce0a6f2
#15 [ffffb0bc4b333af8] generic_make_request at ffffffff8cdfe9ef
#16 [ffffb0bc4b333b58] submit_bio at ffffffff8cdfec6c
#17 [ffffb0bc4b333b98] blkdev_direct_IO at ffffffff8cd1a980
#18 [ffffb0bc4b333c48] generic_file_direct_write at ffffffff8cc2dab3
#19 [ffffb0bc4b333c98] __generic_file_write_iter at ffffffff8cc2dc37
#20 [ffffb0bc4b333cd8] blkdev_write_iter at ffffffff8cd1a0a0
#21 [ffffb0bc4b333d38] aio_write at ffffffff8cd30ba6