freebsd on beaglebone black, lock reversal panic shortly after first boot
David Cheney
david.cheney at canonical.com
Sat Sep 21 09:53:33 UTC 2013
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 at klop.yi.org> wrote:
> On Sat, 21 Sep 2013 00:45:48 +0200, David Cheney
> <david.cheney at 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 at 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 at 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 at 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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