While siting idle, my BB AI started to display the following in the ssh console window. Looking at dmeg and /var/log/messages, I found an error listed for MASTER MPU TARGET BB2D. The board seemed busy but I was not running anything on it at the time. The board did seem to continue to run though.
I’m running with kernel 4.14.108 with the latest, as of 11/23/2019 updates.
`
$ cat /etc/os-release
PRETTY_NAME=“Debian GNU/Linux 9 (stretch)”
NAME=“Debian GNU/Linux”
VERSION_ID=“9”
VERSION=“9 (stretch)”
VERSION_CODENAME=stretch
ID=debian
HOME_URL=“https://www.debian.org/”
SUPPORT_URL=“https://www.debian.org/support”
BUG_REPORT_URL=“https://bugs.debian.org/”
`
$ uname -a Linux beaglebone 4.14.108-ti-r124 #1 SMP PREEMPT Sat Nov 9 05:05:41 UTC 2019 armv7l GNU/Linux
SSH Console messages:
`
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.224892] Internal error: : 1406 [#1] PREEMPT SMP ARM
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.706152] Process lxqt-panel (pid: 2965, stack limit = 0xd0dd0218)
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.716045] Stack: (0xd0dd1e88 to 0xd0dd2000)
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.729082] 1e80: d0dc8478 d1272368 d0dd1f2c d0dd1ea0 c013d3c0 c0d07dbc
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.747351] 1ea0: c0317078 c02e69c8 d1272374 01200011 c0e03c74 014000c0 d0e79830 d0e79834
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.764656] 1ec0: d0e79828 d1a6a03c d087b53c d0e79820 c1504dc8 ca0addfc ca0ada00 00000000
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.781874] 1ee0: 00000000 00000000 00000000 00000000 d0dd1f14 d0dd1ef4 d0dd1ef4 aba415a5
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.798656] 1f00: c0d0a8cc 01200011 be941098 00000000 c1504dc8 00000000 d0dd0000 00000000
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.814219] 1f20: d0dd1f8c d0dd1f30 c013e450 c013c924 00000000 00000000 00000000 000000ae
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.830303] 1f40: c0108f44 be94103c 00000014 00000000 c1504dc8 c0154984 d0dd1f8c aba415a5
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.846911] 1f60: c0161ccc b3ae6068 be941098 00000000 00000078 c0108f44 d0dd0000 00000078
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.862646] 1f80: d0dd1fa4 d0dd1f90 c013e90c c013e39c b3ae6068 00000000 00000000 d0dd1fa8
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.875941] 1fa0: c0108d40 c013e8e8 b3ae6068 be941098 01200011 00000000 00000000 00000000
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.892373] 1fc0: b3ae6068 be941098 00000000 00000078 00000001 b5f60000 b3ae6000 be9410b4
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.908805] 1fe0: 00000078 be941090 b5ee74ef b5e8c6f6 20010030 01200011 00000000 00000000
Message from syslogd@beaglebone at Nov 23 23:40:09 …
kernel:[81378.987062] Code: 1a000005 e1a0300d e3c33d7f e3c3303f (e593300c)
`
Error seen in /var/log/messages
Nov 23 06:25:04 beaglebone liblogging-stdlog: [origin software="rsyslogd" swVersion="8.24.0" x-pid="1688" x-info="http://www.rsyslog.com"] rsyslogd was HUPed Nov 23 23:40:09 beaglebone kernel: [81378.211303] ------------[ cut here ]------------ Nov 23 23:40:09 beaglebone kernel: [81378.211352] WARNING: CPU: 0 PID: 0 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x27c/0x39c Nov 23 23:40:09 beaglebone kernel: [81378.211374] 44000000.ocp:L3 Standard Error: MASTER MPU TARGET BB2D (Read Link): At Address: 0x00000664 : Data Access in User mode during Functional access Nov 23 23:40:09 beaglebone kernel: [81378.211400] Modules linked in: bnep Nov 23 23:40:09 beaglebone kernel: [81378.218512] rpmsg_rpc rpmsg_proto Nov 23 23:40:09 beaglebone kernel: [81378.221259] pvrsrvkm(O) Nov 23 23:40:09 beaglebone kernel: [81378.224869] uio_pruss_shmem Nov 23 23:40:09 beaglebone kernel: [81378.224895] btsdio snd_usb_audio Nov 23 23:40:09 beaglebone kernel: [81378.227811] Modules linked in: Nov 23 23:40:09 beaglebone kernel: [81378.233064] bluetooth Nov 23 23:40:09 beaglebone kernel: [81378.236399] bnep Nov 23 23:40:09 beaglebone kernel: [81378.239471] uvcvideo Nov 23 23:40:09 beaglebone kernel: [81378.241846] rpmsg_rpc Nov 23 23:40:09 beaglebone kernel: [81378.243782] snd_hwdep Nov 23 23:40:09 beaglebone kernel: [81378.246069] rpmsg_proto Nov 23 23:40:09 beaglebone kernel: [81378.248443] snd_usbmidi_lib Nov 23 23:40:09 beaglebone kernel: [81378.250818] pvrsrvkm(O) Nov 23 23:40:09 beaglebone kernel: [81378.253365] videobuf2_vmalloc Nov 23 23:40:09 beaglebone kernel: [81378.256261] uio_pruss_shmem Nov 23 23:40:09 beaglebone kernel: [81378.258810] videobuf2_memops Nov 23 23:40:09 beaglebone kernel: [81378.261882] btsdio Nov 23 23:40:09 beaglebone kernel: [81378.264780] snd_rawmidi Nov 23 23:40:09 beaglebone kernel: [81378.267762] snd_usb_audio Nov 23 23:40:09 beaglebone kernel: [81378.269875] videobuf2_v4l2 Nov 23 23:40:09 beaglebone kernel: [81378.272422] bluetooth Nov 23 23:40:09 beaglebone kernel: [81378.275144] xt_conntrack Nov 23 23:40:09 beaglebone kernel: [81378.277954] uvcvideo Nov 23 23:40:09 beaglebone kernel: [81378.280327] snd_seq_device Nov 23 23:40:09 beaglebone kernel: [81378.282963] snd_hwdep Nov 23 23:40:09 beaglebone kernel: [81378.285248] videobuf2_core Nov 23 23:40:09 beaglebone kernel: [81378.288058] snd_usbmidi_lib Nov 23 23:40:09 beaglebone kernel: [81378.290431] ipt_MASQUERADE Nov 23 23:40:09 beaglebone kernel: [81378.293242] videobuf2_vmalloc Nov 23 23:40:09 beaglebone kernel: [81378.296138] nf_nat_masquerade_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.298950] videobuf2_memops Nov 23 23:40:09 beaglebone kernel: [81378.302021] evdev Nov 23 23:40:09 beaglebone kernel: [81378.305530] snd_rawmidi Nov 23 23:40:09 beaglebone kernel: [81378.308515] joydev Nov 23 23:40:09 beaglebone kernel: [81378.310538] videobuf2_v4l2 Nov 23 23:40:09 beaglebone kernel: [81378.313085] ecdh_generic Nov 23 23:40:09 beaglebone kernel: [81378.315197] xt_conntrack Nov 23 23:40:09 beaglebone kernel: [81378.318007] stmpe_adc Nov 23 23:40:09 beaglebone kernel: [81378.320643] snd_seq_device Nov 23 23:40:09 beaglebone kernel: [81378.323278] brcmfmac Nov 23 23:40:09 beaglebone kernel: [81378.325652] videobuf2_core Nov 23 23:40:09 beaglebone kernel: [81378.328460] brcmutil Nov 23 23:40:09 beaglebone kernel: [81378.330747] ipt_MASQUERADE Nov 23 23:40:09 beaglebone kernel: [81378.333556] cfg80211 Nov 23 23:40:09 beaglebone kernel: [81378.335843] nf_nat_masquerade_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.338652] omap_remoteproc Nov 23 23:40:09 beaglebone kernel: [81378.340938] evdev Nov 23 23:40:09 beaglebone kernel: [81378.344444] virtio_rpmsg_bus Nov 23 23:40:09 beaglebone kernel: [81378.347341] joydev Nov 23 23:40:09 beaglebone kernel: [81378.349363] rpmsg_core Nov 23 23:40:09 beaglebone kernel: [81378.352349] ecdh_generic Nov 23 23:40:09 beaglebone kernel: [81378.354459] iptable_nat Nov 23 23:40:09 beaglebone kernel: [81378.356922] stmpe_adc Nov 23 23:40:09 beaglebone kernel: [81378.359555] nf_conntrack_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.362103] brcmfmac Nov 23 23:40:09 beaglebone kernel: [81378.364476] nf_defrag_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.367548] brcmutil Nov 23 23:40:09 beaglebone kernel: [81378.369833] nf_nat_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.372642] cfg80211 Nov 23 23:40:09 beaglebone kernel: [81378.374927] nf_nat Nov 23 23:40:09 beaglebone kernel: [81378.377474] omap_remoteproc Nov 23 23:40:09 beaglebone kernel: [81378.379760] nf_conntrack Nov 23 23:40:09 beaglebone kernel: [81378.381872] virtio_rpmsg_bus Nov 23 23:40:09 beaglebone kernel: [81378.384769] iptable_mangle Nov 23 23:40:09 beaglebone kernel: [81378.387405] rpmsg_core Nov 23 23:40:09 beaglebone kernel: [81378.390387] iptable_filter Nov 23 23:40:09 beaglebone kernel: [81378.393197] iptable_nat Nov 23 23:40:09 beaglebone kernel: [81378.395657] usb_f_ecm Nov 23 23:40:09 beaglebone kernel: [81378.398465] nf_conntrack_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.401013] usb_f_mass_storage Nov 23 23:40:09 beaglebone kernel: [81378.403386] nf_defrag_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.406456] usb_f_rndis Nov 23 23:40:09 beaglebone kernel: [81378.409615] nf_nat_ipv4 Nov 23 23:40:09 beaglebone kernel: [81378.412422] u_ether Nov 23 23:40:09 beaglebone kernel: [81378.414971] nf_nat Nov 23 23:40:09 beaglebone kernel: [81378.417519] libcomposite Nov 23 23:40:09 beaglebone kernel: [81378.419717] nf_conntrack Nov 23 23:40:09 beaglebone kernel: [81378.421829] cmemk(O) Nov 23 23:40:09 beaglebone kernel: [81378.424465] iptable_mangle Nov 23 23:40:09 beaglebone kernel: [81378.427100] uio_pdrv_genirq Nov 23 23:40:09 beaglebone kernel: [81378.429386] iptable_filter Nov 23 23:40:09 beaglebone kernel: [81378.432195] uio Nov 23 23:40:09 beaglebone kernel: [81378.435093] usb_f_ecm Nov 23 23:40:09 beaglebone kernel: [81378.437902] spidev Nov 23 23:40:09 beaglebone kernel: [81378.439754] usb_f_mass_storage Nov 23 23:40:09 beaglebone kernel: [81378.442126] pruss_soc_bus Nov 23 23:40:09 beaglebone kernel: [81378.444239] usb_f_rndis Nov 23 23:40:09 beaglebone kernel: [81378.447398] pru_rproc Nov 23 23:40:09 beaglebone kernel: [81378.450121] u_ether Nov 23 23:40:09 beaglebone kernel: [81378.452668] pruss Nov 23 23:40:09 beaglebone kernel: [81378.455043] libcomposite Nov 23 23:40:09 beaglebone kernel: [81378.457241] pruss_intc Nov 23 23:40:09 beaglebone kernel: [81378.459265] cmemk(O) Nov 23 23:40:09 beaglebone kernel: [81378.461899] ip_tables Nov 23 23:40:09 beaglebone kernel: [81378.464360] uio_pdrv_genirq Nov 23 23:40:09 beaglebone kernel: [81378.466643] x_tables Nov 23 23:40:09 beaglebone kernel: [81378.469019] uio Nov 23 23:40:09 beaglebone kernel: [81378.474202] spidev Nov 23 23:40:09 beaglebone kernel: [81378.476061] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W O 4.14.108-ti-r124 #1 Nov 23 23:40:09 beaglebone kernel: [81378.476064] pruss_soc_bus pru_rproc Nov 23 23:40:09 beaglebone kernel: [81378.478191] Hardware name: Generic DRA74X (Flattened Device Tree) Nov 23 23:40:09 beaglebone kernel: [81378.486231] pruss Nov 23 23:40:09 beaglebone kernel: [81378.489858] [<c0113180>] (unwind_backtrace) from [<c010d690>] (show_stack+0x20/0x24) Nov 23 23:40:09 beaglebone kernel: [81378.495953] pruss_intc Nov 23 23:40:09 beaglebone kernel: [81378.498002] [<c010d690>] (show_stack) from [<c0ced894>] (dump_stack+0x80/0x94) Nov 23 23:40:09 beaglebone kernel: [81378.505759] ip_tables Nov 23 23:40:09 beaglebone kernel: [81378.508240] [<c0ced894>] (dump_stack) from [<c013f5b8>] (__warn+0xf8/0x110) Nov 23 23:40:09 beaglebone kernel: [81378.515477] x_tables Nov 23 23:40:09 beaglebone kernel: [81378.517863] [<c013f5b8>] (__warn) from [<c013f628>] (warn_slowpath_fmt+0x58/0x74) Nov 23 23:40:09 beaglebone kernel: [81378.527149] [<c013f628>] (warn_slowpath_fmt) from [<c0741e10>] (l3_interrupt_handler+0x27c/0x39c) Nov 23 23:40:09 beaglebone kernel: [81378.534664] CPU: 1 PID: 2965 Comm: lxqt-panel Tainted: G W O 4.14.108-ti-r124 #1 Nov 23 23:40:09 beaglebone kernel: [81378.543591] [<c0741e10>] (l3_interrupt_handler) from [<c01abcbc>] (__handle_irq_event_percpu+0xbc/0x280) Nov 23 23:40:09 beaglebone kernel: [81378.551966] Hardware name: Generic DRA74X (Flattened Device Tree) Nov 23 23:40:09 beaglebone kernel: [81378.561507] [<c01abcbc>] (__handle_irq_event_percpu) from [<c01abebc>] (handle_irq_event_percpu+0x3c/0x8c) Nov 23 23:40:09 beaglebone kernel: [81378.567619] task: d1b18000 task.stack: d0dd0000 Nov 23 23:40:09 beaglebone kernel: [81378.577331] [<c01abebc>] (handle_irq_event_percpu) from [<c01abf54>] (handle_irq_event+0x48/0x6c) Nov 23 23:40:09 beaglebone kernel: [81378.581879] PC is at down_write+0x50/0x64 Nov 23 23:40:09 beaglebone kernel: [81378.590806] [<c01abf54>] (handle_irq_event) from [<c01aff78>] (handle_fasteoi_irq+0xc8/0x17c) Nov 23 23:40:09 beaglebone kernel: [81378.594832] LR is at copy_process.part.5+0xaa8/0x19b0 Nov 23 23:40:09 beaglebone kernel: [81378.603403] [<c01aff78>] (handle_fasteoi_irq) from [<c01aad7c>] (generic_handle_irq+0x34/0x44) Nov 23 23:40:09 beaglebone kernel: [81378.608470] pc : [<c0d07e00>] lr : [<c013d3c0>] psr: 60010013 Nov 23 23:40:09 beaglebone kernel: [81378.617133] [<c01aad7c>] (generic_handle_irq) from [<c01ab390>] (__handle_domain_irq+0x8c/0xfc) Nov 23 23:40:09 beaglebone kernel: [81378.623422] sp : d0dd1e88 ip : d0dd1ea0 fp : d0dd1e9c Nov 23 23:40:09 beaglebone kernel: [81378.632175] [<c01ab390>] (__handle_domain_irq) from [<c01015e0>] (gic_handle_irq+0x4c/0x88) Nov 23 23:40:09 beaglebone kernel: [81378.637415] r10: c161a7f8 r9 : d1a6a000 r8 : d087b500 Nov 23 23:40:09 beaglebone kernel: [81378.645822] [<c01015e0>] (gic_handle_irq) from [<c0d0af8c>] (__irq_svc+0x6c/0xa8) Nov 23 23:40:09 beaglebone kernel: [81378.651060] r7 : d0e79138 r6 : d1272384 r5 : d1272368 r4 : d1272384 Nov 23 23:40:09 beaglebone kernel: [81378.658580] Exception stack(0xc1501c80 to 0xc1501cc8) Nov 23 23:40:09 beaglebone kernel: [81378.665140] r3 : d0dd0000 r2 : ffff0001 r1 : 00000000 r0 : d1272384 Nov 23 23:40:09 beaglebone kernel: [81378.670226] 1c80: dff31700 600f0113 00000000 0000ff0c 00000000 00000000 00000000 dff31700 Nov 23 23:40:09 beaglebone kernel: [81378.676778] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Nov 23 23:40:09 beaglebone kernel: [81378.684999] 1ca0: dff31b54 dff31c00 c1503d00 c1501cdc c1501ce0 c1501cd0 c0178f60 c0d0a860 Nov 23 23:40:09 beaglebone kernel: [81378.692158] Control: 10c5387d Table: 90e0406a DAC: 00000051 Nov 23 23:40:09 beaglebone kernel: [81378.700375] 1cc0: 600f0113 ffffffff Nov 23 23:40:09 beaglebone kernel: [81378.709675] [<c0d0af8c>] (__irq_svc) from [<c0d0a860>] (_raw_spin_unlock_irqrestore+0x30/0x64) Nov 23 23:40:09 beaglebone kernel: [81378.724716] [<c0d0a860>] (_raw_spin_unlock_irqrestore) from [<c0178f60>] (update_blocked_averages+0x504/0x70c) Nov 23 23:40:09 beaglebone kernel: [81378.739143] [<c0178f60>] (update_blocked_averages) from [<c0180f68>] (rebalance_domains+0x58/0x334) Nov 23 23:40:09 beaglebone kernel: [81378.756451] [<c0180f68>] (rebalance_domains) from [<c0181444>] (run_rebalance_domains+0x200/0x228) Nov 23 23:40:09 beaglebone kernel: [81378.773664] [<c0181444>] (run_rebalance_domains) from [<c0101744>] (__do_softirq+0x124/0x3b8) Nov 23 23:40:09 beaglebone kernel: [81378.790447] [<c0101744>] (__do_softirq) from [<c0146a08>] (irq_exit+0xe4/0x120) Nov 23 23:40:09 beaglebone kernel: [81378.806008] [<c0146a08>] (irq_exit) from [<c01ab394>] (__handle_domain_irq+0x90/0xfc) Nov 23 23:40:09 beaglebone kernel: [81378.822091] [<c01ab394>] (__handle_domain_irq) from [<c01015e0>] (gic_handle_irq+0x4c/0x88) Nov 23 23:40:09 beaglebone kernel: [81378.838702] [<c01015e0>] (gic_handle_irq) from [<c0d0af8c>] (__irq_svc+0x6c/0xa8) Nov 23 23:40:09 beaglebone kernel: [81378.854426] Exception stack(0xc1501ed8 to 0xc1501f20) Nov 23 23:40:09 beaglebone kernel: [81378.867717] 1ec0: 00000001 00000000 Nov 23 23:40:09 beaglebone kernel: [81378.884158] 1ee0: fe600000 00000000 c1500000 c1504e60 c1504dfc c14cbb78 c1501f48 00000000 Nov 23 23:40:09 beaglebone kernel: [81378.900589] 1f00: 00000000 c1501f34 c1501f14 c1501f28 c012fcb8 c0109768 600f0013 ffffffff Nov 23 23:40:09 beaglebone kernel: [81378.917035] [<c0d0af8c>] (__irq_svc) from [<c0109768>] (arch_cpu_idle+0x30/0x4c) Nov 23 23:40:09 beaglebone kernel: [81378.925254] [<c0d07e00>] (down_write) from [<c013d3c0>] (copy_process.part.5+0xaa8/0x19b0) Nov 23 23:40:09 beaglebone kernel: [81378.932681] [<c0109768>] (arch_cpu_idle) from [<c0d0a3e4>] (default_idle_call+0x30/0x3c) Nov 23 23:40:09 beaglebone kernel: [81378.940990] [<c013d3c0>] (copy_process.part.5) from [<c013e450>] (_do_fork+0xc0/0x460) Nov 23 23:40:09 beaglebone kernel: [81378.949118] [<c0d0a3e4>] (default_idle_call) from [<c018cc6c>] (do_idle+0x180/0x214) Nov 23 23:40:09 beaglebone kernel: [81378.957072] [<c013e450>] (_do_fork) from [<c013e90c>] (SyS_clone+0x30/0x38) Nov 23 23:40:09 beaglebone kernel: [81378.964854] [<c018cc6c>] (do_idle) from [<c018d00c>] (cpu_startup_entry+0x28/0x2c) Nov 23 23:40:09 beaglebone kernel: [81378.971854] [<c013e90c>] (SyS_clone) from [<c0108d40>] (ret_fast_syscall+0x0/0x54) Nov 23 23:40:09 beaglebone kernel: [81378.979458] [<c018d00c>] (cpu_startup_entry) from [<c0d03850>] (rest_init+0xdc/0xe0) Nov 23 23:40:09 beaglebone kernel: [81378.994862] [<c0d03850>] (rest_init) from [<c1400eb8>] (start_kernel+0x434/0x45c) Nov 23 23:40:09 beaglebone kernel: [81379.000964] ---[ end trace c42e3bc5e949ebe3 ]--- Nov 23 23:40:09 beaglebone kernel: [81379.008484] ---[ end trace c42e3bc5e949ebe4 ]---
I’m sure if others are seeing this.
Cheers,
Jon