Other Parts Discussed in Thread: AM4372, TPS74801
Tool/software: Linux
custom board
no RTC crystal (in case that matters)
SDK 4.03.0.5
host ubuntu 16.04
DTS consists of:
-----------------------------------------------------------------------------------------------------------------------------------------
/*
* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/* AM437x UTI board */
/dts-v1/;
#include "am4372.dtsi"
#include <dt-bindings/pinctrl/am43xx.h>
#include <dt-bindings/pwm/pwm.h>
#include <dt-bindings/gpio/gpio.h>
/ {
model = "TI AM437x UTI BOARD";
compatible = "ti,am4372","ti,am43";
chosen {
stdout-path = &uart0;
};
tps74801_3P3: fixedregulator-LDO1 {
compatible = "regulator-fixed";
regulator-name = "tps74801_3P3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
tps74801_1P8: fixedregulator-LDO2 {
compatible = "regulator-fixed";
regulator-name = "tps74801_1P8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
tps74801_1P5: fixedregulator-LDO3 {
compatible = "regulator-fixed";
regulator-name = "tps74801_1P5";
regulator-min-microvolt = <1500000>;
regulator-max-microvolt = <1500000>;
regulator-always-on;
};
tps74801_CORE: fixedregulator-LDO4 {
compatible = "regulator-fixed";
regulator-name = "tps74801_CORE";
regulator-min-microvolt = <1100000>;
regulator-max-microvolt = <1100000>;
regulator-always-on;
};
tps74801_MPU: fixedregulator-LDO5 {
compatible = "regulator-fixed";
regulator-name = "tps74801_MPU";
regulator-min-microvolt = <1100000>;
regulator-max-microvolt = <1100000>;
regulator-always-on;
};
}
&am43xx_pinmux {
<pin mux>
}
&mmc1 {
status = "okay";
bus-width = <4>;
vmmc-supply = <&tps74801_3P3>;
broken-cd;
};
&uart0 {
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&uart_0_pins_default>;
pinctrl-1 = <&uart_0_pins_sleep>;
};
-----------------------------------------------------------------------------------------------------------------------------------------
we get to arago and we get these messages somewhere down the line:
[FAILED] Failed to start Rebuild Hardware Database.
See 'systemctl status systemd-hwdb-update.service' for details.
[ OK ] Started Apply Kernel Variables.
[ 4.189531] systemd-journald[102]: Received request to flush runtime journal from PID 1
[ OK ] Created slice system-systemd\x2dcoredump.slice.
[ OK ] Started Process Core Dump (PID 128/UID 0).
Starting udev Coldplug all Devices...
Starting Load/Save Random Seed...
[ OK ] Reached target Local File Systems.
Starting Rebuild Journal Catalog...
Starting Rebuild Dynamic Linker Cache...
[FAILED] Failed to start udev Kernel Device Manager.
See 'systemctl status systemd-udevd.service' for details.
[ OK ] Started Flush Journal to Persistent Storage.
[ OK ] Started Load/Save Random Seed.
[ OK ] Started Rebuild Journal Catalog.
[ OK ] Stopped udev Kernel Device Manager.
Starting udev Kernel Device Manager...
Starting Create Volatile Files and Directories...
[ OK ] Stopped Flush Journal to Persistent Storage.
Stopping Flush Journal to Persistent Storage...
[ OK ] Stopped Journal Service.
Starting Journal Service...
[ OK ] Started Process Core Dump (PID 141/UID 0).
[ 4.960564] systemd-journald[146]: File /run/log/journal/4be87c74c9334243b782ee6193087f41/system.journal corrupted or uncl.
[ OK ] Started udev Kernel Device Manager.
[ OK ] Started Journal Service.
[ OK ] Started Rebuild Dynamic Linker Cache.
[ OK ] Started Create Volatile Files and Directories.
Starting Network Time Synchronization...
Starting Update UTMP about System Boot/Shutdown...
Starting Update is Completed...
Starting Flush Journal to Persistent Storage...
[ 5.531755] Unable to handle kernel paging request at virtual address fffffff4
[ OK ] Started Update is Completed.
[ 5.569745] pgd = dbf28000
[[ 5.616797] [fffffff4] *pgd=9cfe6861 OK ] Started Flush Journal to Persistent Storage.
, *pte=00000000, *ppte=00000000
[ 5.648549] Internal error: Oops: 37 [#1] PREEMPT ARM
[ 5.653623] Modules linked in: sch_fq_codel uio_module_drv(O) uio ftdi_sio usbserial usbcore usb_common cryptodev(O) cmemk)
[ 5.665057] CPU: 0 PID: 146 Comm: systemd-journal Tainted: G O 4.9.69-g9ce43c71ae #1
[ 5.673966] Hardware name: Generic AM43 (Flattened Device Tree)
[ 5.679911] task: dbe26680 task.stack: dbf30000
[ 5.684474] PC is at seq_printf+0x18/0x30
[ 5.688507] LR is at render_sigset_t+0x9c/0xb4
[ 5.692970] pc : [<c023de40>] lr : [<c027a910>] psr: 60070013
[ 5.692970] sp : dbf31d70 ip : 00000000 fp : fffffff0
[ 5.704495] r10: 00000000 r9 : 00000010 r8 : 00000001
[ 5.709740] r7 : dbf31df8 r6 : dac1d100 r5 : c09ce404 r4 : 00000030
[ 5.716292] r3 : fffffff8 r2 : 00000000 r1 : c09ce404 r0 : dac1d100
[ 5.722847] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 5.730009] Control: 10c53c7d Table: 9bf28059 DAC: 00000051
[ 5.735778] Process systemd-journal (pid: 146, stack limit = 0xdbf30208)
[ 5.742506] Stack: (0xdbf31d70 to 0xdbf32000)
[ 5.746880] 1d60: dac1d100 dbf31d90 00000040 dbf31dc4
[ 5.755093] 1d80: 00000000 c027a910 c023de38 c09ce404 00000000 43009ea4 00000000 dbf31df8
[ 5.763306] 1da0: dbf31e00 dbf31e08 dbf31e10 dc460208 dac1d100 dc460000 dbf31e54 dbf31dc8
[ 5.771519] 1dc0: c027b104 c027a880 00000003 c099ce94 00000000 00000000 c0239728 dbd26000
[ 5.779731] 1de0: 00000000 00000000 00000001 00000000 00000000 20070013 00000000 00000000
[ 5.787943] 1e00: 00000000 00000000 28014a03 7be3c0fe 00001000 00000000 800004ec 00000001
[ 5.796155] 1e20: 00000000 00000000 dc460000 dc460000 c027a928 dac1d100 dc439000 c0c105d4
[ 5.804368] 1e40: dbf31e98 00000001 dbf31e7c dbf31e58 c0274088 c027a934 dac1d100 c023d5d4
[ 5.812580] 1e60: dbf770c0 dbf31f78 00000000 dbf31e98 dbf31ed4 dbf31e80 c023d784 c0274048
[ 5.820793] 1e80: dbf31ea8 dbf31f78 dbf770c0 dac1d130 0054b700 00000800 00000000 00000000
[ 5.829005] 1ea0: c0107e84 bed0fe90 00000068 dbf770c0 c023d5d4 0054b700 dbf31f78 dbf31f78
[ 5.837218] 1ec0: 00000800 00000000 dbf31f44 dbf31ed8 c0215854 c023d5e0 00000000 00000000
[ 5.845429] 1ee0: 00000000 00000000 00000000 00000000 00000400 00000000 00000000 00000000
[ 5.853642] 1f00: 5ab90d05 229218ff 5ab90d05 229218ff 5ab90d05 229218ff 00000961 00000000
[ 5.861855] 1f20: 00000800 dbf770c0 0054b700 dbf31f78 00000000 00000800 dbf31f74 dbf31f48
[ 5.870067] 1f40: c0216708 c021582c 00000004 c0228124 dbf31f74 dbf770c0 dbf770c0 00000000
[ 5.878280] 1f60: 00000000 0054b700 dbf31fa4 dbf31f78 c02175a8 c0216684 00000000 00000000
[ 5.886492] 1f80: 0054b598 00000000 00000800 00000003 c0107e84 dbf30000 00000000 dbf31fa8
[ 5.894704] 1fa0: c0107cc0 c0217570 0054b598 00000000 00000014 0054b700 00000800 00000000
[ 5.902917] 1fc0: 0054b598 00000000 00000800 00000003 0054b700 b6f9c000 bed10020 00000000
[ 5.911129] 1fe0: 00000000 bed0ff14 b6e0f7ed b6e4af86 00070030 00000014 2baaaaaa abaaaaaa
[ 5.919337] Backtrace: invalid frame pointer 0xfffffff0
[ 5.924601] Code: e92dd800 e24cb010 e24dd00c e28b3008 (e59b1004)
[ OK ] Started Network Time Synchronization.
[ OK ] Started Update UTMP about System Boot/Shutdown.
[ OK ] Started Process Core Dump (PID 166/UID 0).
[ OK ] Started Process Core Dump (PID 162/UID 0).
[ OK ] Reached target System Time Synchronized.
[FAILED] Failed to start udev Coldplug all Devices.
See 'systemctl status systemd-udev-trigger.service' for details.
[ OK ] Reached target System Initialization.
[ OK ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[ OK ] Listening on dropbear.socket.
[ OK ] Listening on RPCbind Server Activation Socket.
[ OK ] Listening on D-Bus System Message Bus Socket.
[ OK ] Reached target Sockets.
[ OK ] Reached target Basic System.
Starting Telephony service...
Starting Avahi mDNS/DNS-SD Stack...
Starting Print notice about GPLv3 packages...
Starting Login Service...
[ OK ] Started Kernel Logging Service.
[ OK ] Started System Logging Service.
Starting uim-sysfs.service...
[ OK ] Started Daily Cleanup of Temporary Directories.
[ OK ] Reached target Timers.
[ OK ] Started Periodic Command Scheduler.
[ OK ] Started Job spooling tools.
[ OK ] Started D-Bus System Message Bus.
[ 6.864670] ---[ end trace bd3218b3ee6d498b ]---
[ OK ] Started Avahi mDNS/DNS-SD Stack.
[ OK ] Started Telephony service.
Starting Network Service...
[ 7.213826] systemd[1]: systemd-journald.service: Failed with result 'signal'.
[ 7.247568] systemd[1]: systemd-journald.service: Service has no hold-off time, scheduling restart.
[ 7.283218] systemd[1]: Started Login Service.
[ OK ] Started Login Service.
[ 7.301725] systemd-coredump[140]: Detected coredump of the journal daemon itself, diverted to /var/lib/systemd/coredump/c.
[ 7.354985] Bluetooth: Core ver 2.22
[ 7.355073] NET: Registered protocol family 31
[ 7.355077] Bluetooth: HCI device and connection manager initialized
[ 7.355095] Bluetooth: HCI socket layer initialized
[ 7.355103] Bluetooth: L2CAP socket layer initialized
[ 7.355131] Bluetooth: SCO socket layer initialized
[ 7.386901] systemd[1]: Stopped Flush Journal to Persistent Storage.
[ 7.548166] systemd[1]: Stopping Flush Journal to Persistent Storage...
[ 7.583980] systemd[1]: Stopped Journal Service.
Stopping Flush Journal to Persistent Storage...
[ OK ] Stopped Journal Service.
[ 7.610698] systemd[1]: Starting Journal Service...
Starting Journal Service...
[ 7.653316] systemd[1]: Started Process Core Dump (PID 186/UID 0).
[ OK ] Started Process Core Dump (PID 186/UID 0).
[ 7.681504] systemd-journald[200]: File /run/log/journal/4be87c74c9334243b782ee6193087f41/system.journal corrupted or uncl.
[ 7.719728] systemd[1]: Started Network Service.
[ OK ] Started Network Service.
[ 7.745177] systemd[1]: ofono.service: Main process exited, code=exited, status=1/FAILURE
[ OK ] Started Journal Service.
Starting Flush Journal to Persistent Storage...
[ 7.899787] Unable to handle kernel paging request at virtual address fffffffc
[ 7.954707] pgd = dbd54000
[ 7.957440] [fffffffc] *pgd=9cfe6861, *pte=00000000, *ppte=00000000
[ 7.998757] Internal error: Oops: 37 [#2] PREEMPT ARM
[ 8.003835] Modules linked in: bluetooth sch_fq_codel uio_module_drv(O) uio ftdi_sio usbserial usbcore usb_common cryptode)
[ 8.016151] CPU: 0 PID: 1 Comm: systemd Tainted: G D O 4.9.69-g9ce43c71ae #1
[ 8.024187] Hardware name: Generic AM43 (Flattened Device Tree)
[ 8.030131] task: dc460000 task.stack: dc464000
[ 8.034696] PC is at down_read_trylock+0x28/0x50
[ 8.039347] LR is at do_page_fault+0xa4/0x360
[ 8.043722] pc : [<c0161d7c>] lr : [<c011407c>] psr: 60070113
[ 8.043722] sp : dc465ea0 ip : 00000000 fp : dc465eac
[ 8.055247] r10: 00000055 r9 : dbd26034 r8 : 005ed108
[ 8.060492] r7 : 0000081f r6 : dbd26000 r5 : dc460000 r4 : dc465fb0
[ 8.067045] r3 : 00000000 r2 : 00000001 r1 : 00000000 r0 : dbd26034
[ 8.073600] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 8.080763] Control: 10c53c7d Table: 9bd54059 DAC: 00000051
[ 8.086531] Process systemd (pid: 1, stack limit = 0xdc464208)
[ 8.092387] Stack: (0xdc465ea0 to 0xdc466000)
[ 8.096764] 5ea0: dc465efc dc465eb0 c011407c c0161d60 00000051 c021bc80 00000013 00000000
[ 8.104977] 5ec0: 00000000 00000000 00000800 00000008 00000000 c0c07874 0000081f c0113fd8
[ 8.113190] 5ee0: 005ed108 dc465fb0 00001390 00000388 dc465fac dc465f00 c0101320 c0113fe4
[ 8.121403] 5f00: 5ab90d0a 08f0d17f 5ab90d0a 08f0d17f 5ab90d0a 08f0d17f 000000e8 00000000
[ 8.129616] 5f20: becffe40 becffe40 005a3d20 becfff64 dc465fa4 dc465f40 c021bf34 c021bb2c
[ 8.137828] 5f40: 000000e8 00000000 00000013 c02281a4 00000001 00000000 00000000 00000000
[ 8.146041] 5f60: 00000000 00000000 5ab90d0a 08f0d17f 5ab90d0a 08f0d17f 5ab90d0a 08f0d17f
[ 8.154254] 5f80: 00001000 00000004 00000000 b6d54ec0 20070030 ffffffff 10c53c7d 10c53c7d
[ 8.162466] 5fa0: 00000000 dc465fb0 c010c860 c01012e8 00000003 005ec0f8 b6dec7cc 005ed100
[ 8.170679] 5fc0: 005ec0f8 b6dec79c b6decae4 b6dec7cc 00001008 00001390 00000388 b6dd046c
[ 8.178892] 5fe0: b6dec010 becffdc0 b6d56223 b6d54ec0 20070030 ffffffff a7175555 9f875555
[ 8.187099] Backtrace:
[ 8.189569] [<c0161d54>] (down_read_trylock) from [<c011407c>] (do_page_fault+0xa4/0x360)
[ 8.197788] [<c0113fd8>] (do_page_fault) from [<c0101320>] (do_DataAbort+0x44/0xc4)
[ 8.205479] r10:00000388 r9:00001390 r8:dc465fb0 r7:005ed108 r6:c0113fd8 r5:0000081f
[ 8.213338] r4:c0c07874
[ 8.215883] [<c01012dc>] (do_DataAbort) from [<c010c860>] (__dabt_usr+0x40/0x60)
[ 8.223308] Exception stack(0xdc465fb0 to 0xdc465ff8)
[ 8.228379] 5fa0: 00000003 005ec0f8 b6dec7cc 005ed100
[ 8.236592] 5fc0: 005ec0f8 b6dec79c b6decae4 b6dec7cc 00001008 00001390 00000388 b6dd046c
[ 8.244803] 5fe0: b6dec010 becffdc0 b6d56223 b6d54ec0 20070030 ffffffff
[ 8.251445] r8:10c53c7d r7:10c53c7d r6:ffffffff r5:20070030 r4:b6d54ec0
[ 8.258176] Code: f5d0f000 e2832001 e190cf9f e3a01000 (e13c0003)
[ 8.418747] Internal error: Oops - undefined instruction: 0 [#3] PREEMPT ARM
[ 8.425848] Modules linked in: bluetooth sch_fq_codel uio_module_drv(O) uio ftdi_sio usbserial usbcore usb_common cryptode)
[ 8.438166] CPU: 0 PID: 200 Comm: systemd-journal Tainted: G D O 4.9.69-g9ce43c71ae #1
[ 8.447075] Hardware name: Generic AM43 (Flattened Device Tree)
[ 8.453020] task: dae9d600 task.stack: dbfd2000
[ 8.457583] PC is at seq_printf+0x0/0x30
[ 8.461530] LR is at render_sigset_t+0x9c/0xb4
[ 8.465992] pc : [<c023de28>] lr : [<c027a910>] psr: 60070013
[ 8.465992] sp : dbfd3d98 ip : 00000000 fp : dbfd3dc4
[ 8.477518] r10: 00000000 r9 : 00000010 r8 : 00000001
[ 8.482762] r7 : dbfd3df8 r6 : dad42800 r5 : c09ce404 r4 : 00000030
[ 8.489315] r3 : 00000000 r2 : 00000000 r1 : c09ce404 r0 : dad42800
[ 8.495870] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 8.503033] Control: 10c53c7d Table: 9ac60059 DAC: 00000051
[ 8.508801] Process systemd-journal (pid: 200, stack limit = 0xdbfd2208)
[ 8.515529] Stack: (0xdbfd3d98 to 0xdbfd4000)
[ 8.519903] 3d80: 00000000 dbfd3df8
[ 8.528116] 3da0: dbfd3e00 dbfd3e08 dbfd3e10 dc460208 dad42800 dc460000 dbfd3e54 dbfd3dc8
[ 8.536329] 3dc0: c027b104 c027a880 00000003 c099ce94 00000000 00000000 c0239728 dbd26000
[ 8.544541] 3de0: 00000000 00000000 00000001 00000001 00000000 20070013 00000000 00000000
[ 8.552754] 3e00: 00010000 00000000 28014a03 7be3c0fe 00001000 00000000 800004ec 00000001
[ 8.560966] 3e20: 00000000 00000000 dc460000 dc460000 c027a928 dad42800 dc439000 c0c105d4
[ 8.569178] 3e40: dbfd3e98 00000001 dbfd3e7c dbfd3e58 c0274088 c027a934 dad42800 c023d5d4
[ 8.577391] 3e60: dbf2e840 dbfd3f78 00000000 dbfd3e98 dbfd3ed4 dbfd3e80 c023d784 c0274048
[ 8.585604] 3e80: dbfd3ea8 dbfd3f78 dbf2e840 dad42830 004fe690 00000800 00000000 00000000
[ 8.593816] 3ea0: c0107e84 be9b3e90 00000068 dbf2e840 c023d5d4 004fe690 dbfd3f78 dbfd3f78
[ 8.602029] 3ec0: 00000800 00000000 dbfd3f44 dbfd3ed8 c0215854 c023d5e0 00000000 00000000
[ 8.610240] 3ee0: 00000000 00000000 00000000 00000000 00000400 00000000 00000000 00000000
[ 8.618453] 3f00: 5ab90d05 229218ff 5ab90d05 229218ff 5ab90d05 229218ff 00000961 00000000
[ 8.626665] 3f20: 00000800 dbf2e840 004fe690 dbfd3f78 00000000 00000800 dbfd3f74 dbfd3f48
[ 8.634878] 3f40: c0216708 c021582c 00000004 c0228124 dbfd3f74 dbf2e840 dbf2e840 00000000
[ 8.643090] 3f60: 00000000 004fe690 dbfd3fa4 dbfd3f78 c02175a8 c0216684 00000000 00000000
[ 8.651302] 3f80: 004fd818 00000000 00000800 00000003 c0107e84 dbfd2000 00000000 dbfd3fa8
[ 8.659515] 3fa0: c0107cc0 c0217570 004fd818 00000000 0000001b 004fe690 00000800 00000000
[ 8.667727] 3fc0: 004fd818 00000000 00000800 00000003 004fe690 b6f5a000 be9b4020 00000000
[ 8.675939] 3fe0: 00000000 be9b3f14 b6dcd7ed b6e08f86 00070030 0000001b 00000000 00000000
[ 8.684147] Backtrace:
[ 8.686617] [<c027a874>] (render_sigset_t) from [<c027b104>] (proc_pid_status+0x7dc/0xa2c)
[ 8.694918] r10:dc460000 r9:dad42800 r8:dc460208 r7:dbfd3e10 r6:dbfd3e08 r5:dbfd3e00
[ 8.702779] r4:dbfd3df8 r3:00000000
[ 8.706372] [<c027a928>] (proc_pid_status) from [<c0274088>] (proc_single_show+0x4c/0x8c)
[ 8.714585] r10:00000001 r9:dbfd3e98 r8:c0c105d4 r7:dc439000 r6:dad42800 r5:c027a928
[ 8.722444] r4:dc460000
[ 8.724990] [<c027403c>] (proc_single_show) from [<c023d784>] (seq_read+0x1b0/0x520)
[ 8.732766] r9:dbfd3e98 r8:00000000 r7:dbfd3f78 r6:dbf2e840 r5:c023d5d4 r4:dad42800
[ 8.740553] [<c023d5d4>] (seq_read) from [<c0215854>] (__vfs_read+0x34/0x118)
[ 8.747719] r10:00000000 r9:00000800 r8:dbfd3f78 r7:dbfd3f78 r6:004fe690 r5:c023d5d4
[ 8.755579] r4:dbf2e840
[ 8.758124] [<c0215820>] (__vfs_read) from [<c0216708>] (vfs_read+0x90/0x11c)
[ 8.765290] r9:00000800 r8:00000000 r7:dbfd3f78 r6:004fe690 r5:dbf2e840 r4:00000800
[ 8.773069] [<c0216678>] (vfs_read) from [<c02175a8>] (SyS_read+0x44/0x98)
[ 8.779974] r8:004fe690 r7:00000000 r6:00000000 r5:dbf2e840 r4:dbf2e840
[ 8.786714] [<c0217564>] (SyS_read) from [<c0107cc0>] (ret_fast_syscall+0x0/0x48)
[ 8.794229] r9:dbfd2000 r8:c0107e84 r7:00000003 r6:00000800 r5:00000000 r4:004fd818
[ 8.802008] Code: e150000c 2afffff2 e584000c e89da830 (e1a0c00d)
[ 8.808128] ---[ end trace bd3218b3ee6d498c ]---
[ 8.912565] ---[ end trace bd3218b3ee6d498d ]---
[ 8.920768] systemd: 36 output lines suppressed due to ratelimiting
[ 8.938582] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 8.938582]
[ 8.947783] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 8.947783]
***************************************************************
***************************************************************
NOTICE: This file system contains the following GPLv3 packages:
autoconf
binutils
cifs-utils
cpio
cpp-symlinks
cpp
dosfstools
findutils
g++-symlinks
g++
gawk-dev
gawk
gcc-symlinks
gcc
gdb
gdbserver
glmark2
gstreamer1.0-libav
If you do not wish to distribute GPLv3 components please remove
the above packages prior to distribution. This can be done using
the opkg remove command. i.e.:
opkg remove <package>
Where <package> is the name printed in the list above
NOTE: If the package is a dependency of another package you
will be notified of the dependent packages. You should
use the --force-removal-of-dependent-packages option to
also remove the dependent packages as well
***************************************************************
***************************************************************
[ 15.455583] systemd-coredump[147]: Failed to log coredump: Connection refused
[ 23.158389] systemd-coredump[130]: Failed to log coredump: Connection refused
[ 31.576610] Unable to handle kernel paging request at virtual address c01175f0
[ 31.583884] pgd = dac74000
[ 31.586600] [c01175f0] *pgd=8000041e(bad)
[ 31.590645] Internal error: Oops: 80d [#4] PREEMPT ARM
[ 31.595803] Modules linked in: bluetooth sch_fq_codel uio_module_drv(O) uio ftdi_sio usbserial usbcore usb_common cryptode)
[ 31.608110] CPU: 0 PID: 77 Comm: mmcqd/0 Tainted: G D O 4.9.69-g9ce43c71ae #1
[ 31.616232] Hardware name: Generic AM43 (Flattened Device Tree)
[ 31.622176] task: dc65c000 task.stack: dbd2e000
[ 31.626745] PC is at dma_cache_maint_page+0x24/0x144
[ 31.631738] LR is at __pv_phys_pfn_offset+0x0/0x4
[ 31.636461] pc : [<c0112784>] lr : [<c0c05940>] psr: 60070113
[ 31.636461] sp : dbd2fce8 ip : c0c782e4 fp : c0117624
[ 31.647987] r10: 00000001 r9 : c0c076f4 r8 : 00000002
[ 31.653231] r7 : 00000001 r6 : 00001000 r5 : 00000000 r4 : dcb61000
[ 31.659784] r3 : 00000001 r2 : 00001000 r1 : 00000000 r0 : dcb617e0
[ 31.666340] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 31.673502] Control: 10c53c7d Table: 9ac74059 DAC: 00000051
[ 31.679270] Process mmcqd/0 (pid: 77, stack limit = 0xdbd2e208)
[ 31.685214] Stack: (0xdbd2fce8 to 0xdbd30000)
[ 31.689589] fce0: c0c782e4 c0c05940 003b0000 dcb617e0 00000000 00001000
[ 31.697802] fd00: 00000001 00000002 c0c076f4 00000001 dbd2fd44 c0117628 80224ed0 c011276c
[ 31.706015] fd20: c0117628 0011000b dcb617e0 dc514610 00000000 00000000 dbd2fd64 dbd2fd48
[ 31.714227] fd40: c0112a18 c01128b0 dbd3c010 dc514610 00000001 00000000 dbd2fdac dbd2fd68
[ 31.722440] fd60: c0113544 c01129ac 00000001 00000000 dcf4cc14 dbd3c000 00000002 c0c076c8
[ 31.730652] fd80: dbd2fdbc c011347c dbcdf228 dbca1388 c0c076f4 00000000 dc514610 00000000
[ 31.738865] fda0: dbd2fdf4 dbd2fdb0 c064550c c0113488 00000000 c0c782e4 c0c05940 dbca1300
[ 31.747078] fdc0: 00000001 dbd3c000 dbe1d9f8 dbcdf158 dbcdf154 dbce3000 dbcdf270 dbcdf144
[ 31.755290] fde0: dbcdf000 dbd2fea4 dbd2fe0c dbd2fdf8 c0645620 c0645444 dbca1000 dbcdf154
[ 31.763503] fe00: dbd2fe64 dbd2fe10 c062ec04 c06455e4 dbcdf154 dbce3000 dbe1d9f8 dbcdf000
[ 31.771716] fe20: dbd2fe64 dbd2fe30 c063d87c c0641a38 00000000 dbcdf158 c03a6a48 dbe1d9f8
[ 31.779929] fe40: dbcdf154 dbce3000 dbcdf008 dbd2e000 dbcdf000 dbe1d9f8 dbd2fed4 dbd2fe68
[ 31.788141] fe60: c063f330 c062ebc8 00000000 00000000 dbd2fe9c dbd2fe80 c03c8a5c c03a6918
[ 31.796354] fe80: c09f8fe0 00000000 00000000 00000003 00000000 dbcdf000 00000000 c011a818
[ 31.804566] fea0: ffffffff 00000000 00002b35 dbce3000 dbcdf008 dbe1d9f8 dbcdf000 dbd2e000
[ 31.812779] fec0: dbcdf000 dbca1000 dbd2ff24 dbd2fed8 c0640914 c063f284 dbe1d9f8 00000000
[ 31.820991] fee0: 00000000 00000000 dbd2ff0c dbd2fef8 c03abc88 00000000 dbe1d9f8 00000001
[ 31.829204] ff00: 00000000 00000000 00000000 dbd2e000 dbcdf008 dbe1d9f8 dbd2ff5c dbd2ff28
[ 31.837416] ff20: c0640e34 c06407a8 dbcdf010 dc7cabc0 00000000 00000000 dbccb700 dbd2e000
[ 31.845629] ff40: dbcdf008 c0640d38 00000000 00000000 dbd2ffac dbd2ff60 c014a884 c0640d44
[ 31.853842] ff60: 57ffaaaa 00000000 6f9faaaa dbcdf008 00000000 dbd2ff74 dbd2ff74 00000000
[ 31.862054] ff80: dbd2ff80 dbd2ff80 dbd2ffac dbccb700 c014a78c 00000000 00000000 00000000
[ 31.870266] ffa0: 00000000 dbd2ffb0 c0107d90 c014a798 00000000 00000000 00000000 00000000
[ 31.878478] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 31.886690] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 e6bfaaaa 6b1eaaaa
[ 31.894898] Backtrace: frame pointer underflow
[ 31.899383] [<e12fff12>] (0xe12fff12) from [<f57ff04e>] (0xf57ff04e)
[ 31.905768] Backtrace aborted due to bad frame pointer <e1500001>
[ 31.911889] Code: e305e940 e34cc0c7 e34ce0c0 e59c4000 (e50bc034)
[ 31.918011] ---[ end trace bd3218b3ee6d498e ]---
[ 67.292457] random: crng init done
i am by no means an expert. what do these messages mean?