Hi guys,

Today I managed to trigger some pretty bad faults with with v5.13-rc4
running on SM8150 (Snapdragon) and iozone.

It seems the problem only happens when using bfq iosched, as I couldn't
trigger it with mq-deadline.

Here's the relevant snippet of console logs, full dmesg.txt attached.

# echo bfq > /sys/block/sdg/queue/scheduler
# iozone -i 0 -R -t 8 -s 1G -r 16M -b /tmp/iozone-bfq.xls -F /mnt/file0 /mnt/file1 /mnt/file2 /mnt/file3 /mnt/file4 /mnt/file5 /mnt/file6 /mnt/file7
        Iozone: Performance Test of File I/O
                Version $Revision: 3.489 $
                Compiled for 64 bit mode.
                Build: linux

        Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins
                     Al Slater, Scott Rhine, Mike Wisner, Ken Goss
                     Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,
                     Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,
                     Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,
                     Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,
                     Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer,
                     Vangel Bojaxhi, Ben England, Vikentsi Lapa,
                     Alexey Skidanov, Sudhir Kumar.

        Run began: Thu Jan  1 02:29:50 1970

        Excel chart generation enabled
        File size set to 1048576 kB
        Record Size 16384 kB
        Command line used: iozone -i 0 -R -t 8 -s 1G -r 16M -b /tmp/iozone-bfq.xls -F /mnt/file0 /mnt/file1 /mnt/file2 /mnt/file3 /mnt/file4 /mnt/file5 /mnt/file6 /mnt/fil
e7
        Output is in kBytes/sec
        Time Resolution = 0.000001 seconds.
        Processor cache size set to 1024 kBytes.
        Processor cache line size set to 32 bytes.
        File stride size set to 17 * record size.
        Throughput test with 8 processes
        Each process writes a 1048576 kByte file in 16384 kByte records
[ 2475.173128] ufshcd-qcom 1d84000.ufshc: __ufshcd_issue_tm_cmd: task management cmd 0x80 timed-out
[ 2475.182205] ufshcd-qcom 1d84000.ufshc: ufshcd_try_to_abort_task: no response from device. tag = 0, err -110
[ 2475.252049] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.317224] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.382038] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.447318] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.453450] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
[ 2475.522779] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.587983] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.653027] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.719555] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.725690] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
[ 2475.795173] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.861232] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.926035] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.991184] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2475.997382] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
[ 2476.064948] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.129955] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.194502] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.259851] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.265962] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
[ 2476.334428] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.399788] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.465468] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.529965] ufshcd-qcom 1d84000.ufshc: Controller enable failed
[ 2476.536086] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
[ 2476.544523] ufshcd-qcom 1d84000.ufshc: ufshcd_err_handler: reset and restore failed with err -5
[ 2476.606521] sd 0:0:0:6: [sdg] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
[ 2476.615917] sd 0:0:0:6: [sdg] tag#0 CDB: opcode=0x2a 2a 00 00 35 b5 7c 00 00 10 00
[ 2476.623715] blk_update_request: I/O error, dev sdg, sector 28158944 op 0x1:(WRITE) flags 0x4000 phys_seg 16 prio class 0