1. 10 Aug, 2016 2 commits
    • Brian King's avatar
      ipr: Fix sync scsi scan · 0d7826dd
      Brian King authored
      Commit b195d5e2 ("ipr: Wait to do async scan until scsi host is
      initialized") fixed async scan for ipr, but broke sync scan. This fixes
      sync scan back up.
      Signed-off-by: default avatarBrian King <brking@linux.vnet.ibm.com>
      Tested-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      0d7826dd
    • Yinghai Lu's avatar
      megaraid_sas: Fix probing cards without io port · e7f85168
      Yinghai Lu authored
      Found one megaraid_sas HBA probe fails,
      
      [  187.235190] scsi host2: Avago SAS based MegaRAID driver
      [  191.112365] megaraid_sas 0000:89:00.0: BAR 0: can't reserve [io  0x0000-0x00ff]
      [  191.120548] megaraid_sas 0000:89:00.0: IO memory region busy!
      
      and the card has resource like,
      [  125.097714] pci 0000:89:00.0: [1000:005d] type 00 class 0x010400
      [  125.104446] pci 0000:89:00.0: reg 0x10: [io  0x0000-0x00ff]
      [  125.110686] pci 0000:89:00.0: reg 0x14: [mem 0xce400000-0xce40ffff 64bit]
      [  125.118286] pci 0000:89:00.0: reg 0x1c: [mem 0xce300000-0xce3fffff 64bit]
      [  125.125891] pci 0000:89:00.0: reg 0x30: [mem 0xce200000-0xce2fffff pref]
      
      that does not io port resource allocated from BIOS, and kernel can not
      assign one as io port shortage.
      
      The driver is only looking for MEM, and should not fail.
      
      It turns out megasas_init_fw() etc are using bar index as mask.  index 1
      is used as mask 1, so that pci_request_selected_regions() is trying to
      request BAR0 instead of BAR1.
      
      Fix all related reference.
      
      Fixes: b6d5d880 ("megaraid_sas: Use lowest memory bar for SR-IOV VF support")
      Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
      Acked-by: default avatarKashyap Desai <kashyap.desai@broadcom.com>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      e7f85168
  2. 08 Aug, 2016 1 commit
  3. 04 Aug, 2016 1 commit
  4. 01 Aug, 2016 3 commits
  5. 26 Jul, 2016 5 commits
    • Hannes Reinecke's avatar
      fcoe: Use default VLAN for FIP VLAN discovery · d242e668
      Hannes Reinecke authored
      FC-BB-6 states: FIP protocols shall be performed on a per-VLAN basis. It
      is recommended to use the FIP VLAN discovery protocol on the default
      VLAN.
      Signed-off-by: default avatarHannes Reinecke <hare@suse.com>
      Acked-by: default avatarJohannes Thumshirn <jth@kernel.org>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      d242e668
    • Brian King's avatar
      ipr: Wait to do async scan until scsi host is initialized · b195d5e2
      Brian King authored
      When performing an async scan, make sure the kthread doing scanning
      doesn't start before the scsi host is fully initialized.
      Signed-off-by: default avatarBrian King <brking@linux.vnet.ibm.com>
      Reviewed-by: default avatarGabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      b195d5e2
    • Uma Krishnan's avatar
      MAINTAINERS: Update cxlflash maintainers · b2c0627c
      Uma Krishnan authored
      Adding myself as a cxlflash maintainer.
      Signed-off-by: default avatarUma Krishnan <ukrishn@linux.vnet.ibm.com>
      Acked-by: default avatarMatthew R. Ochs <mrochs@linux.vnet.ibm.com>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      b2c0627c
    • Uma Krishnan's avatar
      cxlflash: Verify problem state area is mapped before notifying shutdown · 1bd2b282
      Uma Krishnan authored
      If an EEH or some other hard error occurs while the adapter instance was
      being initialized, on the subsequent shutdown of the device, the system
      could crash with:
      
      [c000000f1da03b60] c0000000005eccfc pci_device_shutdown+0x6c/0x100
      [c000000f1da03ba0] c0000000006d67d4 device_shutdown+0x1b4/0x2c0
      [c000000f1da03c40] c0000000000ea30c kernel_restart_prepare+0x5c/0x80
      [c000000f1da03c70] c0000000000ea48c kernel_restart+0x2c/0xc0
      [c000000f1da03ce0] c0000000000ea970 SyS_reboot+0x1c0/0x2d0
      [c000000f1da03e30] c000000000009204 system_call+0x38/0xb4
      
      This crash is due to the AFU not being mapped when the shutdown
      notification routine is called and is a regression that was inserted
      recently with Commit 704c4b0d ("cxlflash: Shutdown notify support
      for CXL Flash cards").
      
      As a fix, shutdown notification should only occur when the AFU is
      mapped.
      
      Fixes: 704c4b0d ("cxlflash: Shutdown notify support for CXL Flash cards")
      Signed-off-by: default avatarUma Krishnan <ukrishn@linux.vnet.ibm.com>
      Reviewed-by: default avatarAndrew Donnellan <andrew.donnellan@au1.ibm.com>
      Acked-by: default avatarMatthew R. Ochs <mrochs@linux.vnet.ibm.com>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      1bd2b282
    • Mauricio Faria de Oliveira's avatar
      lpfc: fix oops in lpfc_sli4_scmd_to_wqidx_distr() from lpfc_send_taskmgmt() · 05a05872
      Mauricio Faria de Oliveira authored
      The lpfc_sli4_scmd_to_wqidx_distr() function expects the scsi_cmnd
      'lpfc_cmd->pCmd' not to be null, and point to the midlayer command.
      
      That's not true in the .eh_(device|target|bus)_reset_handler path,
      because lpfc_send_taskmgmt() sends commands not from the midlayer, so
      does not set 'lpfc_cmd->pCmd'.
      
      That is true in the .queuecommand path because lpfc_queuecommand()
      stores the scsi_cmnd from midlayer in lpfc_cmd->pCmd; and lpfc_cmd is
      stored by lpfc_scsi_prep_cmnd() in piocbq->context1 -- which is passed
      to lpfc_sli4_scmd_to_wqidx_distr() as lpfc_cmd parameter.
      
      This problem can be hit on SCSI EH, and immediately with sg_reset.
      These 2 test-cases demonstrate the problem/fix with next-20160601.
      
      Test-case 1) sg_reset
      
          # strace sg_reset --device /dev/sdm
          <...>
          open("/dev/sdm", O_RDWR|O_NONBLOCK)     = 3
          ioctl(3, SG_SCSI_RESET, 0x3fffde6d0994 <unfinished ...>
          +++ killed by SIGSEGV +++
          Segmentation fault
      
          # dmesg
          Unable to handle kernel paging request for data at address 0x00000000
          Faulting instruction address: 0xd00000001c88442c
          Oops: Kernel access of bad area, sig: 11 [#1]
          <...>
          CPU: 104 PID: 16333 Comm: sg_reset Tainted: G        W       4.7.0-rc1-next-20160601-00004-g95b89dc #6
          <...>
          NIP [d00000001c88442c] lpfc_sli4_scmd_to_wqidx_distr+0xc/0xd0 [lpfc]
          LR [d00000001c826fe8] lpfc_sli_calc_ring.part.27+0x98/0xd0 [lpfc]
          Call Trace:
          [c000003c9ec876f0] [c000003c9ec87770] 0xc000003c9ec87770 (unreliable)
          [c000003c9ec87720] [d00000001c82e004] lpfc_sli_issue_iocb+0xd4/0x260 [lpfc]
          [c000003c9ec87780] [d00000001c831a3c] lpfc_sli_issue_iocb_wait+0x15c/0x5b0 [lpfc]
          [c000003c9ec87880] [d00000001c87f27c] lpfc_send_taskmgmt+0x24c/0x650 [lpfc]
          [c000003c9ec87950] [d00000001c87fd7c] lpfc_device_reset_handler+0x10c/0x200 [lpfc]
          [c000003c9ec87a10] [c000000000610694] scsi_try_bus_device_reset+0x44/0xc0
          [c000003c9ec87a40] [c0000000006113e8] scsi_ioctl_reset+0x198/0x2c0
          [c000003c9ec87bf0] [c00000000060fe5c] scsi_ioctl+0x13c/0x4b0
          [c000003c9ec87c80] [c0000000006629b0] sd_ioctl+0xf0/0x120
          [c000003c9ec87cd0] [c00000000046e4f8] blkdev_ioctl+0x248/0xb70
          [c000003c9ec87d30] [c0000000002a1f60] block_ioctl+0x70/0x90
          [c000003c9ec87d50] [c00000000026d334] do_vfs_ioctl+0xc4/0x890
          [c000003c9ec87de0] [c00000000026db60] SyS_ioctl+0x60/0xc0
          [c000003c9ec87e30] [c000000000009120] system_call+0x38/0x108
          Instruction dump:
          <...>
      
          With fix:
      
          # strace sg_reset --device /dev/sdm
          <...>
          open("/dev/sdm", O_RDWR|O_NONBLOCK)     = 3
          ioctl(3, SG_SCSI_RESET, 0x3fffe103c554) = 0
          close(3)                                = 0
          exit_group(0)                           = ?
          +++ exited with 0 +++
      
          # dmesg
          [  424.658649] lpfc 0006:01:00.4: 4:(0):0713 SCSI layer issued Device Reset (1, 0) return x2002
      
      Test-case 2) SCSI EH
      
          Using this debug patch to wire an SCSI EH trigger, for lpfc_scsi_cmd_iocb_cmpl():
          -       cmd->scsi_done(cmd);
          +       if ((phba->pport ? phba->pport->cfg_log_verbose : phba->cfg_log_verbose) == 0x32100000)
          +               printk(KERN_ALERT "lpfc: skip scsi_done()\n");
          +       else
          +               cmd->scsi_done(cmd);
      
          # echo 0x32100000 > /sys/class/scsi_host/host11/lpfc_log_verbose
      
          # dd if=/dev/sdm of=/dev/null iflag=direct &
          <...>
      
          After a while:
      
          # dmesg
          lpfc 0006:01:00.4: 4:(0):3053 lpfc_log_verbose changed from 0 (x0) to 839909376 (x32100000)
          lpfc: skip scsi_done()
          <...>
          Unable to handle kernel paging request for data at address 0x00000000
          Faulting instruction address: 0xd0000000199e448c
          Oops: Kernel access of bad area, sig: 11 [#1]
          <...>
          CPU: 96 PID: 28556 Comm: scsi_eh_11 Tainted: G        W       4.7.0-rc1-next-20160601-00004-g95b89dc #6
          <...>
          NIP [d0000000199e448c] lpfc_sli4_scmd_to_wqidx_distr+0xc/0xd0 [lpfc]
          LR [d000000019986fe8] lpfc_sli_calc_ring.part.27+0x98/0xd0 [lpfc]
          Call Trace:
          [c000000ff0d0b890] [c000000ff0d0b900] 0xc000000ff0d0b900 (unreliable)
          [c000000ff0d0b8c0] [d00000001998e004] lpfc_sli_issue_iocb+0xd4/0x260 [lpfc]
          [c000000ff0d0b920] [d000000019991a3c] lpfc_sli_issue_iocb_wait+0x15c/0x5b0 [lpfc]
          [c000000ff0d0ba20] [d0000000199df27c] lpfc_send_taskmgmt+0x24c/0x650 [lpfc]
          [c000000ff0d0baf0] [d0000000199dfd7c] lpfc_device_reset_handler+0x10c/0x200 [lpfc]
          [c000000ff0d0bbb0] [c000000000610694] scsi_try_bus_device_reset+0x44/0xc0
          [c000000ff0d0bbe0] [c0000000006126cc] scsi_eh_ready_devs+0x49c/0x9c0
          [c000000ff0d0bcb0] [c000000000614160] scsi_error_handler+0x580/0x680
          [c000000ff0d0bd80] [c0000000000ae848] kthread+0x108/0x130
          [c000000ff0d0be30] [c0000000000094a8] ret_from_kernel_thread+0x5c/0xb4
          Instruction dump:
          <...>
      
          With fix:
      
          # dmesg
          lpfc 0006:01:00.4: 4:(0):3053 lpfc_log_verbose changed from 0 (x0) to 839909376 (x32100000)
          lpfc: skip scsi_done()
          <...>
          lpfc 0006:01:00.4: 4:(0):0713 SCSI layer issued Device Reset (0, 0) return x2002
          <...>
          lpfc 0006:01:00.4: 4:(0):0723 SCSI layer issued Target Reset (1, 0) return x2002
          <...>
          lpfc 0006:01:00.4: 4:(0):0714 SCSI layer issued Bus Reset Data: x2002
          <...>
          lpfc 0006:01:00.4: 4:(0):3172 SCSI layer issued Host Reset Data:
          <...>
      
      Fixes: 8b0dff14 ("lpfc: Add support for using block multi-queue")
      Cc: <stable@vger.kernel.org> # v4.2+
      Signed-off-by: default avatarMauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
      Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
      Acked-by: default avatarJames Smart <james.smart@broadcom.com>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      05a05872
  6. 20 Jul, 2016 6 commits
  7. 15 Jul, 2016 22 commits