# [OmniOS-discuss] [developer] Kernel Panic - Possibly SMB?

Matthew Mabis mmabis at vmware.com
Sun May 11 03:11:59 UTC 2014

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    Hey all,

    Had a repeat of this again, looks like its repeatable only when i pound the SMB Service a lot (had uploads/downloads from multiple boxes at the same time) (WIFI Mac Client downloading 5 different things [Large video files]) Had some uploading going on from two different servers and video streaming to an XBMC box.

    I am no good at troubleshooting these things, i am hoping someone could help me out i have attached the panic again.

    I use to do this all the time on the older versions of the software (using latest stable) and never hit this issue. I am wondering if an SMB Code change might be making this occur.

    If needed i can get you the dump file to help with the troubleshooting as i dont know MDB all that well any help would greatly be appreciated, it does seem whatever is causing this it requires that i pound the SMB Service a lot and then it becomes easily reproducible.

    FMDUMP Info

    nvlist version: 0

    version = 0x0

    class = list.suspect

    uuid = 331b57b0-7aa4-e892-b710-ae1c59c6fe6a

    code = SUNOS-8000-KL

    diag-time = 1399776957 591111

    de = fmd:///module/software-diagnosis

    fault-list-sz = 0x1

    fault-list = (array of embedded nvlists)

    (start fault-list[0])

    nvlist version: 0

    version = 0x0

    class = defect.sunos.kernel.panic

    certainty = 0x64

    asru = sw:///:path=/var/crash/unknown/.331b57b0-7aa4-e892-b710-ae1c59c6fe6a

    resource = sw:///:path=/var/crash/unknown/.331b57b0-7aa4-e892-b710-ae1c59c6fe6a

    savecore-succcess = 1

    dump-dir = /var/crash/unknown

    dump-files = vmdump.0

    os-instance-uuid = 331b57b0-7aa4-e892-b710-ae1c59c6fe6a

    panicstr = BAD TRAP: type=e (#pf Page fault) rp=ffffff0011a03450 addr=ffffff03197b10c8

    panicstack = unix:real_mode_stop_cpu_stage2_end+9de3 () | unix:trap+db3 () | unix:cmntrap+e6 () | smbsrv:smb_fsop_lookup+118 () | smbsrv:smb_common_rename+d9 () | smbsrv:smb_trans2_rename+136 () | smbsrv:smb_set_rename_info+b8 () | smbsrv:smb_set_fileinfo+ed () | smbsrv:smb_set_by_fid+b0 () | smbsrv:smb_com_trans2_set_file_information+58 () | smbsrv:smb_trans2_dispatch+313 () | smbsrv:smb_com_transaction2+1a7 () | smbsrv:smb_dispatch_request+662 () | smbsrv:smb_session_worker+a0 () | genunix:taskq_d_thread+b7 () | unix:thread_start+8 () |

    crashtime = 1399776856

    panic-time = Sat May 10 20:54:16 2014 MDT

    (end fault-list[0])

    fault-status = 0x1

    severity = Major

    __ttl = 0x1

    __ tod = 0x536ee6bd 0x241b4d28

    Here is the ::Stack

    smb_fsop_lookup+0x118(ffffff03197b0990, ffffff02dbfca018, 0, ffffff03197b0db8, ffffff02da252970, ffffff03197b0ea8)

    smb_common_rename+0xd9(ffffff03197b0990, ffffff03197b0bc8, ffffff03197b0db8)

    smb_trans2_rename+0x136(ffffff03197b0990, ffffff02e60c9ca0, ffffff02dc90b628, 1)

    smb_set_rename_info+0xb8(ffffff03197b0990, ffffff0011a03840)

    smb_set_fileinfo+0xed(ffffff03197b0990, ffffff0011a03840)

    smb_set_by_fid+0xb0(ffffff03197b0990, ffffff030f2ff400, 3f2)

    smb_com_trans2_set_file_information+0x58(ffffff03197b0990, ffffff030f2ff400)

    smb_trans2_dispatch+0x313(ffffff03197b0990, ffffff030f2ff400)

    smb_com_transaction2+0x1a7(ffffff03197b0990)

    smb_dispatch_request+0x662(ffffff03197b0990)

    smb_session_worker+0xa0(ffffff03197b0990)

    taskq_d_thread+0xb7(ffffff0331430760)

    thread_start+8()

    Matt Mabis

    ----- Original Message -----

    From: "Matthew Mabis" <mmabis at vmware.com>
    To: "Gordon Ross" <gordon.ross at nexenta.com>
    Cc: developer at lists.illumos.org, "omnios-discuss" <omnios-discuss at lists.omniti.com>
    Sent: Wednesday, May 7, 2014 8:01:55 AM
    Subject: Re: [OmniOS-discuss] [developer] Kernel Panic - Possibly SMB?

    I haven't been able to reproduce this issue, I believe a NC Replication (From Different Pools on the Same Host) was going on while SMB was being actively used.

    How would i look at the " In particular, look at the smb_xa_t it's working on, and the param+data buffers. Are they all there?" Any help would be greatly appreciated!

    Matt Mabis

    ----- Original Message -----

    From: "Gordon Ross" <gordon.ross at nexenta.com>
    To: "Matthew Mabis" <mmabis at vmware.com>
    Cc: developer at lists.illumos.org, "omnios-discuss" <omnios-discuss at lists.omniti.com>
    Sent: Tuesday, May 6, 2014 9:07:23 AM
    Subject: Re: [developer] Kernel Panic - Possibly SMB?

    Is this reproducible? Can you show any more detail about the data structure being operated on when it panic's?
    In particular, look at the smb_xa_t it's working on, and the param+data buffers. Are they all there?

    This is just a guess, but I suspect you may have stumbled upon an instance of the bug fixed here:
    https://github.com/Nexenta/illumos-nexenta/commit/803bd0af2c4842f440c58a8ab2c7b52f4171145d

    Gordon

    On Sun, May 4, 2014 at 7:22 PM, Matthew Mabis < mmabis at vmware.com > wrote:

    Hey all wondering if someone could help me figure out what just happened, i had a kernel panic that i dont understand what caused it based on what i see in the stack it might have been SMB, if you need more like the dump file itself let me know! Any help would greatly be appreciated!

    root at destiny:~# fmdump -Vp -u ae3350e8-17d5-4701-ecc6-b46fbaf1d04b |more

    TIME UUID SUNW-MSG-ID

    May 04 2014 17:16:03.161236000 ae3350e8-17d5-4701-ecc6-b46fbaf1d04b SUNOS-8000-KL

    TIME CLASS ENA

    May 04 17:16:03.1244 ireport.os.sunos.panic.dump_available 0x0000000000000000

    May 04 17:15:23.3085 ireport.os.sunos.panic.dump_pending_on_device 0x0000000000000000

    nvlist version: 0

    version = 0x0

    class = list.suspect

    uuid = ae3350e8-17d5-4701-ecc6-b46fbaf1d04b

    code = SUNOS-8000-KL

    diag-time = 1399245363 130378

    de = fmd:///module/software-diagnosis

    fault-list-sz = 0x1

    fault-list = (array of embedded nvlists)

    (start fault-list[0])

    nvlist version: 0

    version = 0x0

    class = defect.sunos.kernel.panic

    certainty = 0x64

    asru = sw:///:path=/var/crash/unknown/.ae3350e8-17d5-4701-ecc6-b46fbaf1d04b

    resource = sw:///:path=/var/crash/unknown/.ae3350e8-17d5-4701-ecc6-b46fbaf1d04b

    savecore-succcess = 1

    dump-dir = /var/crash/unknown

    dump-files = vmdump.0

    os-instance-uuid = ae3350e8-17d5-4701-ecc6-b46fbaf1d04b

    panicstr = BAD TRAP: type=e (#pf Page fault) rp=ffffff001e907450 addr=ffffff05ce4c90d8

    panicstack = unix:real_mode_stop_cpu_stage2_end+9de3 () | unix:trap+db3 () | unix:cmntrap+e6 () | smbsrv:smb_fsop_lookup+118 () | smbsrv:smb_common_rename+d9 () | smbsrv:smb_tr

    ans2_rename+136 () | smbsrv:smb_set_rename_info+b8 () | smbsrv:smb_set_fileinfo+ed () | smbsrv:smb_set_by_fid+b0 () | smbsrv:smb_com_trans2_set_file_information+58 () | smbsrv:smb_trans2_dispa

    tch+313 () | smbsrv:smb_com_transaction2+1a7 () | smbsrv:smb_dispatch_request+662 () | smbsrv:smb_session_worker+a0 () | genunix:taskq_d_thread+b7 () | unix:thread_start+8 () |

    crashtime = 1399244984

    panic-time = Sun May 4 17:09:44 2014 MDT

    (end fault-list[0])

    severity = Major

    __ttl = 0x1

    __tod = 0x5366ca33 0x99c4420

    Matt Mabis

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