The test-case results with PATCH v2.
scsih_abort()
=============
Without patch:
[ 362.669743] setting logging_level(0x10000000)
[ 362.705074] mpt3sas_cm0: skip free_smid/scsi_done scmd(c000001fd4f2bd40)
[ 363.956579] sd 16:0:1:0: [sdf] Synchronizing SCSI cache
[ 363.956844] sd 16:0:0:0: [sde] Synchronizing SCSI cache
[ 363.957147] mpt3sas_cm0: sending diag reset !!
[ 365.073568] mpt3sas_cm0: diag reset: SUCCESS
[ 365.090316] mpt3sas_cm0: sleep on shutdown
[ 366.120209] mpt3sas_cm0: sleep on shutdown
...
[ 373.419954] sd 16:0:1:0: attempting task abort! scmd(c000001fd4f2bd40)
...
[ 373.420256] mpt3sas_scsih_issue_tm: mpt3sas_cm0: host reset in progress!
[ 373.420300] sd 16:0:1:0: task abort: FAILED scmd(c000001fd4f2bd40)
[ 373.459961] sd 16:0:1:0: attempting device reset! scmd(c000001fd4f2bd40)
...
[ 373.460271] mpt3sas_scsih_issue_tm: mpt3sas_cm0: host reset in progress!
[ 373.460315] sd 16:0:1:0: device reset: FAILED scmd(c000001fd4f2bd40)
[ 373.460362] scsi target16:0:1: attempting target reset! scmd(c000001fd4f2bd40)
...
[ 373.460628] mpt3sas_scsih_issue_tm: mpt3sas_cm0: host reset in progress!
[ 373.460673] scsi target16:0:1: target reset: FAILED scmd(c000001fd4f2bd40)
[ 373.460720] mpt3sas_cm0: attempting host reset! scmd(c000001fd4f2bd40)
[ 373.460764] sd 16:0:1:0: [sdf] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 01 00
[ 373.460821] Unable to handle kernel paging request for data at address 0xd0003800817d0000
[ 373.460876] Faulting instruction address: 0xd000000017b169b8
[ 373.460921] Oops: Kernel access of bad area, sig: 11 [#1]
...
[ 373.462028] NIP [d000000017b169b8] mpt3sas_base_get_iocstate+0x38/0xb0 [mpt3sas]
[ 373.462085] LR [d000000017b1a3f0] mpt3sas_base_hard_reset_handler+0x1a0/0x6d0 [mpt3sas]
[ 373.462138] Call Trace:
[ 373.462160] [c000001fdf5f7ab0] [d000000017b1a3f0] mpt3sas_base_hard_reset_handler+0x1a0/0x6d0 [mpt3sas]
[ 373.462225] [c000001fdf5f7b80] [d000000017b20f6c] scsih_host_reset+0x7c/0x100 [mpt3sas]
[ 373.462281] [c000001fdf5f7c00] [c00000000076f34c] scsi_try_host_reset+0x5c/0x140
[ 373.462335] [c000001fdf5f7c40] [c00000000077107c] scsi_eh_ready_devs+0x73c/0x960
[ 373.462390] [c000001fdf5f7d10] [c000000000772800] scsi_error_handler+0x4c0/0x4e0
[ 373.462444] [c000001fdf5f7dc0] [c000000000107ed4] kthread+0x164/0x1b0
[ 373.462490] [c000001fdf5f7e30] [c00000000000b5a0] ret_from_kernel_thread+0x5c/0xbc
[ 373.468473] Instruction dump:
With patch:
[ 332.994654] setting logging_level(0x10000000)
[ 333.024246] mpt3sas_cm0: skip free_smid/scsi_done scmd(c000003c97348140)
[ 334.232041] sd 16:0:1:0: [sdf] Synchronizing SCSI cache
[ 334.232324] sd 16:0:0:0: [sde] Synchronizing SCSI cache
[ 334.232598] mpt3sas_cm0: sending diag reset !!
[ 335.352533] mpt3sas_cm0: diag reset: SUCCESS
[ 335.372075] mpt3sas_cm0: sleep on shutdown
[ 336.440544] mpt3sas_cm0: sleep on shutdown
...
[ 343.100179] sd 16:0:1:0: attempting task abort! scmd(c000003c97348140)
...
[ 343.100488] sd 16:0:1:0: device been deleted! scmd(c000003c97348140)
[ 343.100532] sd 16:0:1:0: task abort: SUCCESS scmd(c000003c97348140)
[ 343.140185] sd 16:0:1:0: [sdf] tag#0 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 343.140275] sd 16:0:1:0: [sdf] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 01 00
[ 343.140338] print_req_error: I/O error, dev sdf, sector 0
scsih_dev/target/host_reset()
===========================
Without patch:
[ 101.077946] setting logging_level(0x11000000)
[ 101.110029] mpt3sas_cm0: skip free_smid/scsi_done scmd(c000001fb7a2dd40)
[ 102.356108] sd 16:0:1:0: [sdf] Synchronizing SCSI cache
[ 102.356396] sd 16:0:0:0: [sde] Synchronizing SCSI cache
[ 102.356647] mpt3sas_cm0: sending diag reset !!
[ 103.476380] mpt3sas_cm0: diag reset: SUCCESS
[ 103.492696] mpt3sas_cm0: sleep on shutdown
[ 104.512914] mpt3sas_cm0: sleep on shutdown
...
[ 111.732912] sd 16:0:1:0: attempting task abort! scmd(c000001fb7a2dd40)
...
[ 111.733202] mpt3sas_cm0: fail task abort scmd(c000001fb7a2dd40)
[ 111.733246] sd 16:0:1:0: task abort: FAILED scmd(c000001fb7a2dd40)
[ 111.772919] sd 16:0:1:0: attempting device reset! scmd(c000001fb7a2dd40)
...
[ 111.773177] mpt3sas_scsih_issue_tm: mpt3sas_cm0: host reset in progress!
[ 111.773222] sd 16:0:1:0: device reset: FAILED scmd(c000001fb7a2dd40)
[ 111.773266] scsi target16:0:1: attempting target reset! scmd(c000001fb7a2dd40)
...
[ 111.773528] mpt3sas_scsih_issue_tm: mpt3sas_cm0: host reset in progress!
[ 111.773574] scsi target16:0:1: target reset: FAILED scmd(c000001fb7a2dd40)
[ 111.773617] mpt3sas_cm0: attempting host reset! scmd(c000001fb7a2dd40)
[ 111.773662] sd 16:0:1:0: [sdf] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 01 00
[ 111.773721] Unable to handle kernel paging request for data at address 0xd000380081790000
[ 111.773773] Faulting instruction address: 0xd0000000179d69b8
[ 111.773818] Oops: Kernel access of bad area, sig: 11 [#1]
...
[ 111.774925] NIP [d0000000179d69b8] mpt3sas_base_get_iocstate+0x38/0xb0 [mpt3sas]
[ 111.774980] LR [d0000000179da3f0] mpt3sas_base_hard_reset_handler+0x1a0/0x6d0 [mpt3sas]
[ 111.775032] Call Trace:
[ 111.775054] [c000001fd995bab0] [d0000000179da3f0] mpt3sas_base_hard_reset_handler+0x1a0/0x6d0 [mpt3sas]
[ 111.775118] [c000001fd995bb80] [d0000000179e0f6c] scsih_host_reset+0x7c/0x100 [mpt3sas]
[ 111.775173] [c000001fd995bc00] [c00000000076f34c] scsi_try_host_reset+0x5c/0x140
[ 111.775227] [c000001fd995bc40] [c00000000077107c] scsi_eh_ready_devs+0x73c/0x960
[ 111.775280] [c000001fd995bd10] [c000000000772800] scsi_error_handler+0x4c0/0x4e0
[ 111.775333] [c000001fd995bdc0] [c000000000107ed4] kthread+0x164/0x1b0
[ 111.775378] [c000001fd995be30] [c00000000000b5a0] ret_from_kernel_thread+0x5c/0xbc
[ 111.778393] Instruction dump:
With patch:
[ 56.316855] setting logging_level(0x11000000)
[ 56.347607] mpt3sas_cm0: skip free_smid/scsi_done scmd(c000001fc3afb540)
[ 57.604052] sd 16:0:1:0: [sdf] Synchronizing SCSI cache
[ 57.604319] sd 16:0:0:0: [sde] Synchronizing SCSI cache
[ 57.604615] mpt3sas_cm0: sending diag reset !!
[ 58.725154] mpt3sas_cm0: diag reset: SUCCESS
[ 58.741245] mpt3sas_cm0: sleep on shutdown
[ 59.803191] mpt3sas_cm0: sleep on shutdown
...
[ 67.103187] sd 16:0:1:0: attempting task abort! scmd(c000001fc3afb540)
...
[ 67.103521] mpt3sas_cm0: fail task abort scmd(c000001fc3afb540)
[ 67.103569] sd 16:0:1:0: task abort: FAILED scmd(c000001fc3afb540)
[ 67.143193] sd 16:0:1:0: attempting device reset! scmd(c000001fc3afb540)
...
[ 67.143514] sd 16:0:1:0: device been deleted! scmd(c000001fc3afb540)
[ 67.143564] sd 16:0:1:0: device reset: SUCCESS scmd(c000001fc3afb540)
[ 67.143613] scsi target16:0:1: attempting target reset! scmd(c000001fc3afb540)
...
[ 67.143897] scsi target16:0:1: target been deleted! scmd(c000001fc3afb540)
[ 67.143944] scsi target16:0:1: target reset: SUCCESS scmd(c000001fc3afb540)
[ 67.143992] mpt3sas_cm0: attempting host reset! scmd(c000001fc3afb540)
[ 67.144040] sd 16:0:1:0: [sdf] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 01 00
[ 67.144096] mpt3sas_cm0: Blocking the host reset
[ 67.144133] mpt3sas_cm0: host reset: FAILED scmd(c000001fc3afb540)
[ 67.144179] sd 16:0:1:0: Device offlined - not ready after error recovery
[ 67.144228] sd 16:0:1:0: [sdf] tag#0 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 67.144295] sd 16:0:1:0: [sdf] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 01 00
[ 67.144351] print_req_error: I/O error, dev sdf, sector 0
