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Date:      Sun, 21 Nov 2021 12:09:35 -0800
From:      Mark Millard via arm <arm@freebsd.org>
To:        "freebsd-arm@freebsd.org" <arm@freebsd.org>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>
Subject:   Re: FYI: aarch64 boot (HoneyComb): example crash during system checks (power-off/power-on form of reboot still fails)
Message-ID:  <AB354F9B-E689-4EFB-AD9C-A5E7336D99F2@yahoo.com>
In-Reply-To: <EE321364-5847-45A9-BAFA-F7764890A8DB@yahoo.com>
References:  <FC2361C4-CF04-44C4-BFC0-3F1E59A42A1A@yahoo.com> <EE321364-5847-45A9-BAFA-F7764890A8DB@yahoo.com>

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On 2021-Nov-21, at 11:36, Mark Millard <marklmi@yahoo.com> wrote:

> On 2021-Nov-21, at 11:26, Mark Millard <marklmi@yahoo.com> wrote:
>=20
>> Starting file system checks:
>> /dev/gpt/CA72opt0EFI: 41 files, 242 MiB free (15469 clusters)
>> FIXED
>> /d  x0: ffff000000e43ec8 (blocked_lock + 0)
>> x1: ffff00013efa9f50
>> x2: ffff00000090e39a (cam_status_table + 1d132)
>> x3:         deadc0d8
>> x4:                0
>> x5: ffff00000082a138 (data_abort + 0)
>> x6:                5
>> x7:              601
>> x8: ffff000000e43ec8 (blocked_lock + 0)
>> x9:         deadc0de
>> x10:                0
>> x11:          3938700
>> x12:                0
>> x13:             8000
>> x14:              1de
>> x15:             81ce
>> x16:         425b9080
>> x17:             8000
>> x18: ffff00013efa9f40
>> x19: ffff000000e43ec8 (blocked_lock + 0)
>> x20: ffffa0001a826000
>> x21:                0
>> x22: ffffa0001a826000
>> x23:                0
>> x24: ffff000000bed000 (queue_ops + 0)
>> x25:           98967f
>> x26: ffff000000e43ee0 (blocked_lock + 18)
>> x27:                0
>> x28:              114
>> x29: ffff00013efa9f40
>> sp: ffff00013efa9f40
>> lr: ffff0000004b9028 (thread_lock_flags_ + c0)
>> elr: ffff0000004b9028 (thread_lock_flags_ + c0)
>> spsr:              2c5
>> far:         deadc178
>> esr:         96000004
>> timeout stopping cpus
>> panic: data abort in critical section or under mutex
>> cpuid =3D 5
>> time =3D 1637492224
>> KDB: stack backtrace:
>> db_trace_self() at db_trace_self_wrapper+0x30
>>        pc =3D 0xffff000000807770  lr =3D 0xffff00000011d9ec
>>        sp =3D 0xffff00013efa9990  fp =3D 0xffff00013efa9b90
>>=20
>> db_trace_self_wrapper() at vpanic+0x188
>>        pc =3D 0xffff00000011d9ec  lr =3D 0xffff0000004e1d10
>>        sp =3D 0xffff00013efa9ba0  fp =3D 0xffff00013efa9c00
>>=20
>> vpanic() at panic+0x44
>>        pc =3D 0xffff0000004e1d10  lr =3D 0xffff0000004e1b84
>>        sp =3D 0xffff00013efa9c10  fp =3D 0xffff00013efa9cc0
>>=20
>> panic() at data_abort+0x290
>>        pc =3D 0xffff0000004e1b84  lr =3D 0xffff00000082a3c8
>>        sp =3D 0xffff00013efa9cd0  fp =3D 0xffff00013efa9d50
>>=20
>> data_abort() at handle_el1h_sync+0x78
>>        pc =3D 0xffff00000082a3c8  lr =3D 0xffff00000080a078
>>        sp =3D 0xffff00013efa9d60  fp =3D 0xffff00013efa9eb0
>>=20
>> handle_el1h_sync() at thread_lock_flags_+0xbc
>>        pc =3D 0xffff00000080a078  lr =3D 0xffff0000004b9024
>>        sp =3D 0xffff00013efa9ec0  fp =3D 0xffff00013efa9f40
>>=20
>> thread_lock_flags_() at thread_lock_flags_+0xbc
>>        pc =3D 0xffff0000004b9024  lr =3D 0xffff0000004b9024
>>        sp =3D 0xffff00013efa9f50  fp =3D 0xffff00013efa9f60
>>=20
>> thread_lock_flags_() at sleepq_timeout+0x10
>>        pc =3D 0xffff0000004b9024  lr =3D 0xffff00000054b2a8
>>        sp =3D 0xffff00013efa9f70  fp =3D 0xffff00013efa9fb0
>>=20
>> sleepq_timeout() at softclock_call_cc+0x14c
>>        pc =3D 0xffff00000054b2a8  lr =3D 0xffff000000503134
>>        sp =3D 0xffff00013efa9fc0  fp =3D 0xffff00013efaa020
>>=20
>> softclock_call_cc() at callout_process+0x17c
>>        pc =3D 0xffff000000503134  lr =3D 0xffff000000502df0
>>        sp =3D 0xffff00013efaa030  fp =3D 0xffff00013efaa0a0
>>=20
>> callout_process() at handleevents+0x188
>>        pc =3D 0xffff000000502df0  lr =3D 0xffff00000045b42c
>>        sp =3D 0xffff00013efaa0b0  fp =3D 0xffff00013efaa100
>>=20
>> handleevents() at timercb+0x304
>>        pc =3D 0xffff00000045b42c  lr =3D 0xffff00000045be7c
>>        sp =3D 0xffff00013efaa110  fp =3D 0xffff00013efaa170
>>=20
>> timercb() at arm_tmr_intr+0x5c
>>        pc =3D 0xffff00000045be7c  lr =3D 0xffff0000007ff850
>>        sp =3D 0xffff00013efaa180  fp =3D 0xffff00013efaa1d0
>>=20
>> arm_tmr_intr() at intr_event_handle+0xac
>>        pc =3D 0xffff0000007ff850  lr =3D 0xffff000000493c54
>>        sp =3D 0xffff00013efaa1e0  fp =3D 0xffff00013efaa1e0
>>=20
>> intr_event_handle() at intr_isrc_dispatch+0x70
>>        pc =3D 0xffff000000493c54  lr =3D 0xffff0000007fb238
>>        sp =3D 0xffff00013efaa1f0  fp =3D 0xffff00013efaa230
>>=20
>> intr_isrc_dispatch() at arm_gic_v3_intr+0x11c
>>        pc =3D 0xffff0000007fb238  lr =3D 0xffff00000080ff34
>>        sp =3D 0xffff00013efaa240  fp =3D 0xffff00013efaa250
>>=20
>> arm_gic_v3_intr() at intr_irq_handler+0x7c
>>        pc =3D 0xffff00000080ff34  lr =3D 0xffff0000007faff0
>>        sp =3D 0xffff00013efaa260  fp =3D 0xffff00013efaa2b0
>>=20
>> intr_irq_handler() at handle_el1h_irq+0x74
>>        pc =3D 0xffff0000007faff0  lr =3D 0xffff00000080a140
>>        sp =3D 0xffff00013efaa2c0  fp =3D 0xffff00013efaa3f0
>>=20
>> handle_el1h_irq() at handle_el1h_sync+0x78
>>        pc =3D 0xffff00000080a140  lr =3D 0xffff00000080a078
>>        sp =3D 0xffff00013efaa400  fp =3D 0xffff00013efaa500
>>=20
>> handle_el1h_sync() at handle_el1h_sync+0x78
>>        pc =3D 0xffff00000080a078  lr =3D 0xffff00000080a078
>>        sp =3D 0xffff00013efaa510  fp =3D 0xffff00013efaa660
>>=20
>> handle_el1h_sync() at sched_switch+0x6a8
>>        pc =3D 0xffff00000080a078  lr =3D 0xffff0000005197fc
>>        sp =3D 0xffff00013efaa670  fp =3D 0xffff00013efaa6f0
>>=20
>> sched_switch() at sched_switch+0x6a8
>>        pc =3D 0xffff0000005197fc  lr =3D 0xffff0000005197fc
>>        sp =3D 0xffff00013efaa700  fp =3D 0xffff00013efaa790
>>=20
>> sched_switch() at mi_switch+0xf4
>>        pc =3D 0xffff0000005197fc  lr =3D 0xffff0000004f03a0
>>        sp =3D 0xffff00013efaa7a0  fp =3D 0xffff00013efaa7f0
>>=20
>> mi_switch() at sleepq_timedwait+0x28
>>        pc =3D 0xffff0000004f03a0  lr =3D 0xffff00000054bd0c
>>        sp =3D 0xffff00013efaa800  fp =3D 0xffff00013efaa830
>>=20
>> sleepq_timedwait() at _cv_timedwait_sbt+0x110
>>        pc =3D 0xffff00000054bd0c  lr =3D 0xffff00000045e7b0
>>        sp =3D 0xffff00013efaa840  fp =3D 0xffff00013efaa850
>>=20
>> _cv_timedwait_sbt() at dbuf_evict_thread+0x410
>>        pc =3D 0xffff00000045e7b0  lr =3D 0xffff0000013ca59c
>>        sp =3D 0xffff00013efaa860  fp =3D 0xffff00013efaa8f0
>>=20
>> dbuf_evict_thread() at fork_exit+0x94
>>        pc =3D 0xffff0000013ca59c  lr =3D 0xffff00000048fbf0
>>        sp =3D 0xffff00013efaa900  fp =3D 0xffff00013efaa950
>>=20
>> fork_exit() at fork_trampoline+0x10
>>        pc =3D 0xffff00000048fbf0  lr =3D 0xffff000000828ed8
>>        sp =3D 0xffff00013efaa960  fp =3D 0x0000000000000000
>>=20
>> KDB: enter: panic
>> [ thread pid 26 tid 100194 ]
>> Stopped at      kdb_enter+0x48: undefined       f906411f
>>=20
>> For reference:
>>=20
>> # uname -apKU
>> FreeBSD CA72_16Gp_ZFS 13.0-STABLE FreeBSD 13.0-STABLE #13 =
stable/13-n248062-109330155000-dirty: Sat Nov 13 23:55:14 PST 2021     =
root@CA72_16Gp_ZFS:/usr/obj/BUILDs/13S-CA72-nodbg-clang/usr/13S-src/arm64.=
aarch64/sys/GENERIC-NODBG-CA72  arm64 aarch64 1300520 1300520
>>=20
>> It is a root-on-ZFS context on Optane media in the PCie slot.
>>=20
>> I've no clue if this will repeat. I've never gotten
>> this before.
>=20
>=20
> The reboot attempt got the following, involving
> zthr_procedure instead of dbuf_evict_thread .
>=20
> Starting file system checks:
> /dev/gpt/CA72opt0EFI: FILESYSTEM CLEAN; SKIPPING CHECKS
>  x0: ffff000000e43ec8 (blocked_lock + 0)
>  x1: ffff00013ef9ff90
>  x2: ffff00000090e39a (cam_status_table + 1d132)
>  x3:         deadc0d8
>  x4:                0
>  x5: ffff00000082a138 (data_abort + 0)
>  x6:                9
>  x7:              601
>  x8: ffff000000e43ec8 (blocked_lock + 0)
>  x9:         deadc0de
> x10:                0
> x11:          3938700
> x12:                1
> x13:             8000
> x14:              1ee
> x15:             81cd
> x16:         425b9080
> x17:             8000
> x18: ffff00013ef9ff80
> x19: ffff000000e43ec8 (blocked_lock + 0)
> x20: ffffa0000c011000
> x21:                0
> x22: ffffa0000c011000
> x23:                0
> x24: ffff000000bed000 (queue_ops + 0)
> x25:           98967f
> x26: ffff000000e43ee0 (blocked_lock + 18)
> x27:                0
> x28:              114
> x29: ffff00013ef9ff80
>  sp: ffff00013ef9ff80
>  lr: ffff0000004b9028 (thread_lock_flags_ + c0)
> elr: ffff0000004b9028 (thread_lock_flags_ + c0)
> spsr:              2c5
> far:         deadc178
> esr:         96000004
> timeout stopping cpus
> panic: data abort in critical section or under mutex
> cpuid =3D 9
> time =3D 1637492224
> KDB: stack backtrace:
> db_trace_self() at db_trace_self_wrapper+0x30
>         pc =3D 0xffff000000807770  lr =3D 0xffff00000011d9ec
>         sp =3D 0xffff00013ef9f9d0  fp =3D 0xffff00013ef9fbd0
>=20
> db_trace_self_wrapper() at vpanic+0x188
>         pc =3D 0xffff00000011d9ec  lr =3D 0xffff0000004e1d10
>         sp =3D 0xffff00013ef9fbe0  fp =3D 0xffff00013ef9fc40
>=20
> vpanic() at panic+0x44
>         pc =3D 0xffff0000004e1d10  lr =3D 0xffff0000004e1b84
>         sp =3D 0xffff00013ef9fc50  fp =3D 0xffff00013ef9fd00
>=20
> panic() at data_abort+0x290
>         pc =3D 0xffff0000004e1b84  lr =3D 0xffff00000082a3c8
>         sp =3D 0xffff00013ef9fd10  fp =3D 0xffff00013ef9fd90
>=20
> data_abort() at handle_el1h_sync+0x78
>         pc =3D 0xffff00000082a3c8  lr =3D 0xffff00000080a078
>         sp =3D 0xffff00013ef9fda0  fp =3D 0xffff00013ef9fef0
>=20
> handle_el1h_sync() at thread_lock_flags_+0xbc
>         pc =3D 0xffff00000080a078  lr =3D 0xffff0000004b9024
>         sp =3D 0xffff00013ef9ff00  fp =3D 0xffff00013ef9ff80
>=20
> thread_lock_flags_() at thread_lock_flags_+0xbc
>         pc =3D 0xffff0000004b9024  lr =3D 0xffff0000004b9024
>         sp =3D 0xffff00013ef9ff90  fp =3D 0xffff00013ef9ffa0
>=20
> thread_lock_flags_() at sleepq_timeout+0x10
>         pc =3D 0xffff0000004b9024  lr =3D 0xffff00000054b2a8
>         sp =3D 0xffff00013ef9ffb0  fp =3D 0xffff00013ef9fff0
>=20
> sleepq_timeout() at softclock_call_cc+0x14c
>         pc =3D 0xffff00000054b2a8  lr =3D 0xffff000000503134
>         sp =3D 0xffff00013efa0000  fp =3D 0xffff00013efa0060
>=20
> softclock_call_cc() at callout_process+0x17c
>         pc =3D 0xffff000000503134  lr =3D 0xffff000000502df0
>         sp =3D 0xffff00013efa0070  fp =3D 0xffff00013efa00e0
>=20
> callout_process() at handleevents+0x188
>         pc =3D 0xffff000000502df0  lr =3D 0xffff00000045b42c
>         sp =3D 0xffff00013efa00f0  fp =3D 0xffff00013efa0140
>=20
> handleevents() at timercb+0x304
>         pc =3D 0xffff00000045b42c  lr =3D 0xffff00000045be7c
>         sp =3D 0xffff00013efa0150  fp =3D 0xffff00013efa01b0
>=20
> timercb() at arm_tmr_intr+0x5c
>         pc =3D 0xffff00000045be7c  lr =3D 0xffff0000007ff850
>         sp =3D 0xffff00013efa01c0  fp =3D 0xffff00013efa0210
>=20
> arm_tmr_intr() at intr_event_handle+0xac
>         pc =3D 0xffff0000007ff850  lr =3D 0xffff000000493c54
>         sp =3D 0xffff00013efa0220  fp =3D 0xffff00013efa0220
>=20
> intr_event_handle() at intr_isrc_dispatch+0x70
>         pc =3D 0xffff000000493c54  lr =3D 0xffff0000007fb238
>         sp =3D 0xffff00013efa0230  fp =3D 0xffff00013efa0270
>=20
> intr_isrc_dispatch() at arm_gic_v3_intr+0x11c
>         pc =3D 0xffff0000007fb238  lr =3D 0xffff00000080ff34
>         sp =3D 0xffff00013efa0280  fp =3D 0xffff00013efa0290
>=20
> arm_gic_v3_intr() at intr_irq_handler+0x7c
>         pc =3D 0xffff00000080ff34  lr =3D 0xffff0000007faff0
>         sp =3D 0xffff00013efa02a0  fp =3D 0xffff00013efa02f0
>=20
> intr_irq_handler() at handle_el1h_irq+0x74
>         pc =3D 0xffff0000007faff0  lr =3D 0xffff00000080a140
>         sp =3D 0xffff00013efa0300  fp =3D 0xffff00013efa0430
>=20
> handle_el1h_irq() at handle_el1h_sync+0x78
>         pc =3D 0xffff00000080a140  lr =3D 0xffff00000080a078
>         sp =3D 0xffff00013efa0440  fp =3D 0xffff00013efa0540
>=20
> handle_el1h_sync() at handle_el1h_sync+0x78
>         pc =3D 0xffff00000080a078  lr =3D 0xffff00000080a078
>         sp =3D 0xffff00013efa0550  fp =3D 0xffff00013efa06a0
>=20
> handle_el1h_sync() at sched_switch+0x6a8
>         pc =3D 0xffff00000080a078  lr =3D 0xffff0000005197fc
>         sp =3D 0xffff00013efa06b0  fp =3D 0xffff00013efa0730
>=20
> sched_switch() at sched_switch+0x6a8
>         pc =3D 0xffff0000005197fc  lr =3D 0xffff0000005197fc
>         sp =3D 0xffff00013efa0740  fp =3D 0xffff00013efa07d0
>=20
> sched_switch() at mi_switch+0xf4
>         pc =3D 0xffff0000005197fc  lr =3D 0xffff0000004f03a0
>         sp =3D 0xffff00013efa07e0  fp =3D 0xffff00013efa0830
>=20
> mi_switch() at sleepq_timedwait+0x28
>         pc =3D 0xffff0000004f03a0  lr =3D 0xffff00000054bd0c
>         sp =3D 0xffff00013efa0840  fp =3D 0xffff00013efa0870
>=20
> sleepq_timedwait() at _cv_timedwait_sbt+0x110
>         pc =3D 0xffff00000054bd0c  lr =3D 0xffff00000045e7b0
>         sp =3D 0xffff00013efa0880  fp =3D 0xffff00013efa0890
>=20
> _cv_timedwait_sbt() at zthr_procedure+0x20c
>         pc =3D 0xffff00000045e7b0  lr =3D 0xffff0000014e2fb0
>         sp =3D 0xffff00013efa08a0  fp =3D 0xffff00013efa08f0
>=20
> zthr_procedure() at fork_exit+0x94
>         pc =3D 0xffff0000014e2fb0  lr =3D 0xffff00000048fbf0
>         sp =3D 0xffff00013efa0900  fp =3D 0xffff00013efa0950
>=20
> fork_exit() at fork_trampoline+0x10
>         pc =3D 0xffff00000048fbf0  lr =3D 0xffff000000828ed8
>         sp =3D 0xffff00013efa0960  fp =3D 0x0000000000000000
>=20
> KDB: enter: panic
> [ thread pid 26 tid 100192 ]
> Stopped at      kdb_enter+0x48: undefined       f906411f
>=20
>=20
> Note:
>=20
> All this started after a stress based I/O hangup test
> that required a forced reboot.


It is a bectl environment for that Optane:

# bectl list
BE               Active Mountpoint Space Created
13S-CA72-nodbg   R      -          6.38G 2021-09-29 00:57
13_0R-CA72-nodbg N      /          3.57G 2021-09-29 00:45
main-CA72-nodbg  -      -          7.99G 2021-09-29 00:42

13_0R-CA72-nodbg and main-CA72-nodbg boot fine, just
13S-CA72-nodbg has the problem.

For reference:

=3D>        40  1875384928    nda1  GPT  (894G)
          40      532480  nda1p1  CA72opt0EFI  (260M)
      532520        2008          - free -  (1.0M)
      534528   515899392  nda1p2  CA72opt0SWP  (246G)
   516433920    20971520          - free -  (10G)
   537405440  1337979528  nda1p3  CA72opt0ZFS  (638G)

Another attempt at booting have gotten reports of

. . . lots of waiting notices . . .
Root mount waiting for: CAM usbus1
Root mount waiting for: CAM usbus1
Root mount waiting for: CAM usbus1
Root mount waiting for: CAM usbus1
Root mount waiting for: CAM usbus1
  x0: ffff000000e43ec8 (blocked_lock + 0)
  x1: ffff00013efa9f60
  x2: ffff00000090e39a (cam_status_table + 1d132)
  x3:         deadc0d8
  x4:                0
  x5: ffff00000082a138 (data_abort + 0)
  x6:                4
  x7:              601
  x8: ffff000000e43ec8 (blocked_lock + 0)
  x9:         deadc0de
 x10:                0
 x11:          3938700
 x12:                0
 x13:             8000
 x14:              1dd
 x15:             81cd
 x16:                0
 x17:                1
 x18: ffff00013efa9f50
 x19: ffff000000e43ec8 (blocked_lock + 0)
 x20: ffffa0000c806000
 x21:                0
 x22: ffffa0000c806000
 x23:                0
 x24: ffff000000bed000 (queue_ops + 0)
 x25:           98967f
 x26: ffff000000e43ee0 (blocked_lock + 18)
 x27:                0
 x28:              114
 x29: ffff00013efa9f50
  sp: ffff00013efa9f50
  lr: ffff0000004b9028 (thread_lock_flags_ + c0)
 elr: ffff0000004b9028 (thread_lock_flags_ + c0)
spin lock 0xffff00004317b100 (sched lock 4) held by 0xffffa0000c806000 =
(tid 100194) too long
spin lock 0xffff00004317b100 (sched lock 4) held by 0xffffa0000c806000 =
(tid 100194) too long
spin lock 0xffff00004317b100 (sched lock 4) held by 0xffffa0000c806000 =
(tid 100194) too long
spsr:              2c5
 far:         deadc178
 esr:         96000004
timeout stopping cpus
panic: spin lock held too long
cpuid =3D 9
time =3D 56
KDB: stack backtrace:
db_trace_self() at db_trace_self_wrapper+0x30
         pc =3D 0xffff000000807770  lr =3D 0xffff00000011d9ec
         sp =3D 0xffff000156eea430  fp =3D 0xffff000156eea630

db_trace_self_wrapper() at vpanic+0x188
         pc =3D 0xffff00000011d9ec  lr =3D 0xffff0000004e1d10
         sp =3D 0xffff000156eea640  fp =3D 0xffff000156eea6a0

vpanic() at panic+0x44
         pc =3D 0xffff0000004e1d10  lr =3D 0xffff0000004e1b84
         sp =3D 0xffff000156eea6b0  fp =3D 0xffff000156eea760

panic() at _mtx_lock_indefinite_check+0x8c
         pc =3D 0xffff0000004e1b84  lr =3D 0xffff0000004b8ea4
         sp =3D 0xffff000156eea770  fp =3D 0xffff000156eea770

_mtx_lock_indefinite_check() at _mtx_lock_spin_cookie+0xb8
         pc =3D 0xffff0000004b8ea4  lr =3D 0xffff0000004b8a0c
         sp =3D 0xffff000156eea780  fp =3D 0xffff000156eea790

_mtx_lock_spin_cookie() at sched_add+0x400
         pc =3D 0xffff0000004b8a0c  lr =3D 0xffff00000051ac94
         sp =3D 0xffff000156eea7a0  fp =3D 0xffff000156eea7f0

sched_add() at kthread_add+0x238
         pc =3D 0xffff00000051ac94  lr =3D 0xffff0000004a01e0
         sp =3D 0xffff000156eea800  fp =3D 0xffff000156eea880

kthread_add() at vm_pageout+0x1b8
         pc =3D 0xffff0000004a01e0  lr =3D 0xffff0000007e5a18
         sp =3D 0xffff000156eea890  fp =3D 0xffff000156eea8f0

. . . Garbled . . .

         sp =3D 0xffff00013efa9bb0  fp =3D 0xffff00013efa9c10

vpanic() at panic+0x44
         pc =3D 0xffff0000004e1d10  lr =3D 0xffff0000004e1b84
         sp =3D 0xffff00013efa9c20  fp =3D 0xffff00013efa9cd0

panic() at data_abort+0x290
         pc =3D 0xffff0000004e1b84  lr =3D 0xffff00000082a3c8
         sp =3D 0xffff00013efa9ce0  fp =3D 0xffff00013efa9d60

data_abort() at handle_el1h_sync+0x78
         pc =3D 0xffff00000082a3c8  lr =3D 0xffff00000080a078
         sp =3D 0xffff00013efa9d70  fp =3D 0xffff00013efa9ec0

handle_el1h_sync() at thread_lock_flags_+0xbc
         pc =3D 0xffff00000080a078  lr =3D 0xffff0000004b9024
         sp =3D 0xffff00013efa9ed0  fp =3D 0xffff00013efa9f50

thread_lock_flags_() at thread_lock_flags_+0xbc
         pc =3D 0xffff0000004b9024  lr =3D 0xffff0000004b9024

. . . Garbled . . .

But after that the next attempt booted just fine. zpool
scrub got:

# zpool status
  pool: zopt0
 state: ONLINE
  scan: scrub repaired 0B in 00:02:05 with 0 errors on Sun Nov 21 =
12:00:09 2021
config:

        NAME        STATE     READ WRITE CKSUM
        zopt0       ONLINE       0     0     0
          nda1p3    ONLINE       0     0     0

errors: No known data errors

Further reboots into 13S-CA72-nodbg have worked fine.


For reference:

The HoneyComb is a 16 Cortex-A72 system.

I've no clue if releng/13 (-p5) or main could be
induced to get similar behavior to what
13S-CA72-nodbg showed for the Optane media.


=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)




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