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Date:      Sat, 21 Sep 2013 19:53:25 +1000
From:      David Cheney <david.cheney@canonical.com>
To:        Ronald Klop <ronald-freebsd8@klop.yi.org>
Cc:        freebsd-arm@freebsd.org
Subject:   Re: freebsd on beaglebone black, lock reversal panic shortly after first boot
Message-ID:  <CAHPQsETr9tXQ99atJBFyv1epE-cC9fn6EkfpC0zMt2u%2B1UkpVQ@mail.gmail.com>
In-Reply-To: <op.w3q9gg2g8527sy@212-182-167-131.ip.telfort.nl>
References:  <CAHPQsES33YNYVGFF=dFLinaNQex2wrAm%2B8e6qHip1-HdaAg26Q@mail.gmail.com> <op.w3q9gg2g8527sy@212-182-167-131.ip.telfort.nl>

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Ronald,

Thanks for your reply. I'm sorry, I am inexperienced with this sort of
thing, the machine has not crash, in fact it still building a port
now. From my linux background, if I saw that much output, the host
would be kerput.

Cheers

Dave


On Sat, Sep 21, 2013 at 7:46 PM, Ronald Klop
<ronald-freebsd8@klop.yi.org> wrote:
> On Sat, 21 Sep 2013 00:45:48 +0200, David Cheney
> <david.cheney@canonical.com> wrote:
>
>> Hello,
>>
>> I've been trying to replace my old RPi freebsd system, which I haven't
>> been able to get a working build for months on, with a Beaglebone
>> Black. This was the message I received after booting the card for the
>> first time and trying to portsnap.
>>
>> Cheers
>>
>> Dave
>
>
> In the subject you mention it is a panic, but that does not show from the
> output.
> Is your machine hanging? Or does it reboot after the panic? Or can you just
> work on.
> There are a lot of lock order reversals (LORs) which are harmless for the
> working of the machine. I don't know about this one.
>
> Ronald.
>
>>
>> ---
>>
>>
>> FreeBSD/arm (beaglebone) (ttyu0)
>>
>> login: root
>> Sep 20 21:57:34 beaglebone login: ROOT LOGIN (root) ON ttyu0
>> FreeBSD 10.0-ALPHA2 (BEAGLEBONE) #0 r255662: Fri Sep 20 23:04:55 EST 2013
>>
>> Welcome to FreeBSD!
>>
>> Before seeking technical support, please use the following resources:
>>
>> o  Security advisories and updated errata information for all releases are
>>    at http://www.FreeBSD.org/releases/ - always consult the ERRATA section
>>    for your release first as it's updated frequently.
>>
>> o  The Handbook and FAQ documents are at http://www.FreeBSD.org/ and,
>>    along with the mailing lists, can be searched by going to
>>    http://www.FreeBSD.org/search/.  If the doc package has been installed
>>    (or fetched via pkg install lang-freebsd-doc, where lang is the
>>    2-letter language code, e.g. en), they are also available formatted
>>    in /usr/local/share/doc/freebsd.
>>
>> If you still have a question or problem, please take the output of
>> `uname -a', along with any relevant error messages, and email it
>> as a question to the questions@FreeBSD.org mailing list.  If you are
>> unfamiliar with FreeBSD's directory layout, please refer to the hier(7)
>> manual page.  If you are not familiar with manual pages, type `man man'.
>>
>> Edit /etc/motd to change this login announcement.
>>
>> root@beaglebone:~ # df -h
>> Filesystem        Size    Used   Avail Capacity  Mounted on
>> /dev/mmcsd0s2a    3.5G    396M    2.9G    12%    /
>> devfs             1.0k    1.0k      0B   100%    /dev
>> /dev/mmcsd0s1       2M    693k    1.3M    34%    /boot/msdos
>> /dev/md0           28M     24k     26M     0%    /tmp
>> /dev/md1           14M     60k     13M     0%    /var/log
>> /dev/md2          4.4M    8.0k    4.0M     0%    /var/tmp
>> root@beaglebone:~ # portsnap fetch && portsnap extract
>> Looking up portsnap.FreeBSD.org mirrors... 7 mirrors found.
>> Fetching public key from ec2-ap-southeast-2.portsnap.freebsd.org... done.
>> Fetching snapshot tag from ec2-ap-southeast-2.portsnap.freebsd.org...
>> done.
>> Fetching snapshot metadata... done.
>> Fetching snapshot generated at Fri Sep 20 00:08:00 UTC 2013:
>> f88e945869b296b518253a080d33b8c988a382fd82586c100% of   69 MB 1473 kBps
>> 00m48s
>> Extracting snapshot... lock order reversal:
>>  1st 0xcd1299d0 bufwait (bufwait) @
>> /root/crochet-freebsd/src/sys/kern/vfs_bio.c:3059
>>  2nd 0xc2a8f600 dirhash (dirhash) @
>> /root/crochet-freebsd/src/sys/ufs/ufs/ufs_dirhash.c:284
>> KDB: stack backtrace:
>> db_trace_self() at db_trace_self
>>          pc = 0xc052ecf4  lr = 0xc022dcd0 (db_trace_self_wrapper+0x30)
>>          sp = 0xdd6ff7e0  fp = 0xdd6ff8f8
>>         r10 = 0xcd1299d0
>> db_trace_self_wrapper() at db_trace_self_wrapper+0x30
>>          pc = 0xc022dcd0  lr = 0xc038e9e0 (kdb_backtrace+0x38)
>>          sp = 0xdd6ff900  fp = 0xdd6ff908
>>          r4 = 0xc066a484  r5 = 0xc05ae078
>>          r6 = 0xc0592f71  r7 = 0xc0598518
>> kdb_backtrace() at kdb_backtrace+0x38
>>          pc = 0xc038e9e0  lr = 0xc03a8b5c (witness_checkorder+0xda0)
>>          sp = 0xdd6ff910  fp = 0xdd6ff960
>>          r4 = 0xc05ae43b
>> witness_checkorder() at witness_checkorder+0xda0
>>          pc = 0xc03a8b5c  lr = 0xc035ff8c (_sx_xlock+0x84)
>>          sp = 0xdd6ff968  fp = 0xdd6ff990
>>          r4 = 0x0000011c  r5 = 0xc05ae075
>>          r6 = 0xc2a8f610  r7 = 0xc2a8f600
>>          r8 = 0x00000000  r9 = 0xc2c067e0
>>         r10 = 0x000001b4
>> _sx_xlock() at _sx_xlock+0x84
>>          pc = 0xc035ff8c  lr = 0xc04ebfa8 (ufsdirhash_add+0x34)
>>          sp = 0xdd6ff998  fp = 0xdd6ff9b0
>>          r4 = 0xc2a8f600  r5 = 0xc2ab1e80
>>          r6 = 0xdd6ffa48  r7 = 0x00000001
>>          r8 = 0x0000084c
>> ufsdirhash_add() at ufsdirhash_add+0x34
>>          pc = 0xc04ebfa8  lr = 0xc04ee88c (ufs_direnter+0x45c)
>>          sp = 0xdd6ff9b8  fp = 0xdd6ffa20
>>          r4 = 0xc2ab1e80  r5 = 0xcd3af84c
>>          r6 = 0xdd6ffa48  r7 = 0x00000001
>>          r8 = 0x0000004c  r9 = 0xc2c067e0
>> ufs_direnter() at ufs_direnter+0x45c
>>          pc = 0xc04ee88c  lr = 0xc04f7e04 (ufs_makeinode+0x3f4)
>>          sp = 0xdd6ffa28  fp = 0xdd6ffb88
>>          r4 = 0xdd6ffa48  r5 = 0xc2ab1180
>>          r6 = 0xdd6ffd48  r7 = 0x00000000
>>          r8 = 0xc2c067e0  r9 = 0xdd6ffd30
>>         r10 = 0x000081a4
>> ufs_makeinode() at ufs_makeinode+0x3f4
>>          pc = 0xc04f7e04  lr = 0xc04f4268 (ufs_create+0x24)
>>          sp = 0xdd6ffb90  fp = 0xdd6ffb90
>>          r4 = 0xdd6ffc60  r5 = 0xc064eba0
>>          r6 = 0x00000000  r7 = 0x00100a02
>>          r8 = 0x00000000  r9 = 0xdd6ffd30
>>         r10 = 0xdd6ffd50
>> ufs_create() at ufs_create+0x24
>>          pc = 0xc04f4268  lr = 0xc0552268 (VOP_CREATE_APV+0xd0)
>>          sp = 0xdd6ffb98  fp = 0xdd6ffba8
>> VOP_CREATE_APV() at VOP_CREATE_APV+0xd0
>>          pc = 0xc0552268  lr = 0xc0408540 (vn_open_cred+0x278)
>>          sp = 0xdd6ffbb0  fp = 0xdd6ffc90
>>          r4 = 0xdd6ffce0  r5 = 0xdd6ffd30
>>          r6 = 0xc2c067e0
>> vn_open_cred() at vn_open_cred+0x278
>>          pc = 0xc0408540  lr = 0xc04082c0 (vn_open+0x24)
>>          sp = 0xdd6ffc98  fp = 0xdd6ffca0
>>          r4 = 0xc2a2d640  r5 = 0xc2a76000
>>          r6 = 0xdd6ffce0  r7 = 0x00000012
>>          r8 = 0x00000000  r9 = 0x000500cf
>>         r10 = 0xdd6ffcd0
>> vn_open() at vn_open+0x24
>>          pc = 0xc04082c0  lr = 0xc040187c (kern_openat+0x24c)
>>          sp = 0xdd6ffca8  fp = 0xdd6ffda8
>> kern_openat() at kern_openat+0x24c
>>          pc = 0xc040187c  lr = 0xc04015c4 (sys_open+0x28)
>>          sp = 0xdd6ffdb0  fp = 0xdd6ffdb8
>>          r4 = 0xc2a2d640  r5 = 0x00000000
>>          r6 = 0x20cc1198  r7 = 0x00000000
>>          r8 = 0xdd6ffe10  r9 = 0xc29f6c80
>>         r10 = 0x20c24080
>> sys_open() at sys_open+0x28
>>          pc = 0xc04015c4  lr = 0xc0540764 (swi_handler+0x284)
>>          sp = 0xdd6ffdc0  fp = 0xdd6ffe58
>> swi_handler() at swi_handler+0x284
>>          pc = 0xc0540764  lr = 0xc0530350 (swi_entry+0x2c)
>>          sp = 0xdd6ffe60  fp = 0xbfffe960
>>          r4 = 0x20c0a200  r5 = 0x000001a4
>>          r6 = 0x20cc1198  r7 = 0x00000005
>>          r8 = 0x20c0a200  r9 = 0x00000001
>> swi_entry() at swi_entry+0x2c
>>          pc = 0xc0530350  lr = 0xc0530350 (swi_entry+0x2c)
>>          sp = 0xdd6ffe60  fp = 0xbfffe960
>> Unable to unwind further
>> lock order reversal:
>>  1st 0xc2c06814 ufs (ufs) @
>> /root/crochet-freebsd/src/sys/kern/vfs_subr.c:2099
>>  2nd 0xcd1299d0 bufwait (bufwait) @
>> /root/crochet-freebsd/src/sys/ufs/ffs/ffs_vnops.c:262
>>  3rd 0xc2cb9154 ufs (ufs) @
>> /root/crochet-freebsd/src/sys/kern/vfs_subr.c:2099
>> KDB: stack backtrace:
>> db_trace_self() at db_trace_self
>>          pc = 0xc052ecf4  lr = 0xc022dcd0 (db_trace_self_wrapper+0x30)
>>          sp = 0xdd6ff578  fp = 0xdd6ff690
>>         r10 = 0xc05adb30
>> db_trace_self_wrapper() at db_trace_self_wrapper+0x30
>>          pc = 0xc022dcd0  lr = 0xc038e9e0 (kdb_backtrace+0x38)
>>          sp = 0xdd6ff698  fp = 0xdd6ff6a0
>>          r4 = 0xc066a484  r5 = 0xc0592f71
>>          r6 = 0xc059b3d0  r7 = 0xc05adb33
>> kdb_backtrace() at kdb_backtrace+0x38
>>          pc = 0xc038e9e0  lr = 0xc03a8b5c (witness_checkorder+0xda0)
>>          sp = 0xdd6ff6a8  fp = 0xdd6ff6f8
>>          r4 = 0xc0581d1c
>> witness_checkorder() at witness_checkorder+0xda0
>>          pc = 0xc03a8b5c  lr = 0xc033c5fc (__lockmgr_args+0x698)
>>          sp = 0xdd6ff700  fp = 0xdd6ff768
>>          r4 = 0x00080100  r5 = 0x00000833
>>          r6 = 0xc2cb9154  r7 = 0x00080000
>>          r8 = 0x00000100  r9 = 0x00000000
>>         r10 = 0xc059b3cd
>> __lockmgr_args() at __lockmgr_args+0x698
>>          pc = 0xc033c5fc  lr = 0xc04e678c (ffs_lock+0x80)
>>          sp = 0xdd6ff770  fp = 0xdd6ff798
>>          r4 = 0xdd6ff7b8  r5 = 0x00080100
>>          r6 = 0xc2cb9120  r7 = 0xc2cb9154
>>          r8 = 0xc2cb9174  r9 = 0x00000000
>>         r10 = 0xc059b3cd
>> ffs_lock() at ffs_lock+0x80
>>          pc = 0xc04e678c  lr = 0xc0554118 (VOP_LOCK1_APV+0xd8)
>>          sp = 0xdd6ff7a0  fp = 0xdd6ff7b0
>>          r4 = 0xdd6ff7b8  r5 = 0xc064e690
>>          r6 = 0x00000000  r7 = 0x00000000
>>          r8 = 0xc2a2d640  r9 = 0x00000833
>> VOP_LOCK1_APV() at VOP_LOCK1_APV+0xd8
>>          pc = 0xc0554118  lr = 0xc0408cbc (_vn_lock+0x78)
>>          sp = 0xdd6ff7b8  fp = 0xdd6ff7e8
>>          r4 = 0xc2cb9120  r5 = 0x00080100
>>          r6 = 0x00080100
>> _vn_lock() at _vn_lock+0x78
>>          pc = 0xc0408cbc  lr = 0xc03f97e8 (vget+0x60)
>>          sp = 0xdd6ff7f0  fp = 0xdd6ff810
>>          r4 = 0xc2cb9120  r5 = 0x00000000
>>          r6 = 0x00080100  r7 = 0x00000000
>>          r8 = 0xc2a2d640  r9 = 0xc059a607
>>         r10 = 0x00000000
>> vget() at vget+0x60
>>          pc = 0xc03f97e8  lr = 0xc03ede5c (vfs_hash_get+0xe4)
>>          sp = 0xdd6ff818  fp = 0xdd6ff848
>>          r4 = 0xc2a0b2b0  r5 = 0x00000000
>>          r6 = 0x0002787d  r7 = 0x00000000
>>          r8 = 0xc2cb9120
>> vfs_hash_get() at vfs_hash_get+0xe4
>>          pc = 0xc03ede5c  lr = 0xc04e17f4 (ffs_vgetf+0x3c)
>>          sp = 0xdd6ff850  fp = 0xdd6ff8a0
>>          r4 = 0x0002787d  r5 = 0xc05aa74b
>>          r6 = 0xc2bb13c0  r7 = 0xdd6ff908
>>          r8 = 0xc2bb13c0  r9 = 0x00080000
>>         r10 = 0xc2a0b2b0
>> ffs_vgetf() at ffs_vgetf+0x3c
>>          pc = 0xc04e17f4  lr = 0xc04da468 (softdep_sync_buf+0x974)
>>          sp = 0xdd6ff8a8  fp = 0xdd6ff928
>>          r4 = 0x0002787d  r5 = 0xc05aa74b
>>          r6 = 0xc2bb13c0  r7 = 0xc05aa74b
>>          r8 = 0xc2bb13c0  r9 = 0x0000088b
>>         r10 = 0x0002787d
>> softdep_sync_buf() at softdep_sync_buf+0x974
>>          pc = 0xc04da468  lr = 0xc04e7560 (ffs_syncvnode+0x2bc)
>>          sp = 0xdd6ff930  fp = 0xdd6ff980
>>          r4 = 0x00000000  r5 = 0xcd188d48
>>          r6 = 0x00060200  r7 = 0xc2c067e0
>>          r8 = 0xc05adb30  r9 = 0xcd1299d0
>>         r10 = 0xcd129978
>> ffs_syncvnode() at ffs_syncvnode+0x2bc
>>          pc = 0xc04e7560  lr = 0xc04e6650 (ffs_fsync+0x20)
>>          sp = 0xdd6ff988  fp = 0xdd6ff998
>>          r4 = 0xdd6ff9f0  r5 = 0xc2c067e0
>>          r6 = 0x00000000  r7 = 0x00000200
>>          r8 = 0xc2a2d640  r9 = 0xc2c067e0
>>         r10 = 0xc33445a0
>> ffs_fsync() at ffs_fsync+0x20
>>          pc = 0xc04e6650  lr = 0xc05534b8 (VOP_FSYNC_APV+0xd0)
>>          sp = 0xdd6ff9a0  fp = 0xdd6ff9b0
>>          r4 = 0xdd6ff9f0  r5 = 0xc064e690
>>          r6 = 0x00000000  r7 = 0x00000200
>> VOP_FSYNC_APV() at VOP_FSYNC_APV+0xd0
>>          pc = 0xc05534b8  lr = 0xc04eeb54 (ufs_direnter+0x724)
>>          sp = 0xdd6ff9b8  fp = 0xdd6ffa20
>>          r4 = 0xc33445a0  r5 = 0x00000000
>>          r6 = 0xcd356e00
>> ufs_direnter() at ufs_direnter+0x724
>>          pc = 0xc04eeb54  lr = 0xc04f7e04 (ufs_makeinode+0x3f4)
>>          sp = 0xdd6ffa28  fp = 0xdd6ffb88
>>          r4 = 0xdd6ffa48  r5 = 0xc332fa00
>>          r6 = 0xdd6ffd48  r7 = 0x00000000
>>          r8 = 0xc2c067e0  r9 = 0xdd6ffd30
>>         r10 = 0x000081a4
>> ufs_makeinode() at ufs_makeinode+0x3f4
>>          pc = 0xc04f7e04  lr = 0xc04f4268 (ufs_create+0x24)
>>          sp = 0xdd6ffb90  fp = 0xdd6ffb90
>>          r4 = 0xdd6ffc60  r5 = 0xc064eba0
>>          r6 = 0x00000000  r7 = 0x00100a02
>>          r8 = 0x00000000  r9 = 0xdd6ffd30
>>         r10 = 0xdd6ffd50
>> ufs_create() at ufs_create+0x24
>>          pc = 0xc04f4268  lr = 0xc0552268 (VOP_CREATE_APV+0xd0)
>>          sp = 0xdd6ffb98  fp = 0xdd6ffba8
>> VOP_CREATE_APV() at VOP_CREATE_APV+0xd0
>>          pc = 0xc0552268  lr = 0xc0408540 (vn_open_cred+0x278)
>>          sp = 0xdd6ffbb0  fp = 0xdd6ffc90
>>          r4 = 0xdd6ffce0  r5 = 0xdd6ffd30
>>          r6 = 0xc2c067e0
>> vn_open_cred() at vn_open_cred+0x278
>>          pc = 0xc0408540  lr = 0xc04082c0 (vn_open+0x24)
>>          sp = 0xdd6ffc98  fp = 0xdd6ffca0
>>          r4 = 0xc2a2d640  r5 = 0xc2a76000
>>          r6 = 0xdd6ffce0  r7 = 0x00000012
>>          r8 = 0x00000000  r9 = 0x000500cf
>>         r10 = 0xdd6ffcd0
>> vn_open() at vn_open+0x24
>>          pc = 0xc04082c0  lr = 0xc040187c (kern_openat+0x24c)
>>          sp = 0xdd6ffca8  fp = 0xdd6ffda8
>> kern_openat() at kern_openat+0x24c
>>          pc = 0xc040187c  lr = 0xc04015c4 (sys_open+0x28)
>>          sp = 0xdd6ffdb0  fp = 0xdd6ffdb8
>>          r4 = 0xc2a2d640  r5 = 0x00000000
>>          r6 = 0x20cc1198  r7 = 0x00000000
>>          r8 = 0xdd6ffe10  r9 = 0xc29f6c80
>>         r10 = 0x20c24080
>> sys_open() at sys_open+0x28
>>          pc = 0xc04015c4  lr = 0xc0540764 (swi_handler+0x284)
>>          sp = 0xdd6ffdc0  fp = 0xdd6ffe58
>> swi_handler() at swi_handler+0x284
>>          pc = 0xc0540764  lr = 0xc0530350 (swi_entry+0x2c)
>>          sp = 0xdd6ffe60  fp = 0xbfffe960
>>          r4 = 0x20c0a200  r5 = 0x000001a4
>>          r6 = 0x20cc1198  r7 = 0x00000
>> _______________________________________________
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>> http://lists.freebsd.org/mailman/listinfo/freebsd-arm
>> To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"
>
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