From mboxrd@z Thu Jan 1 00:00:00 1970 From: lambertarthur22@gmail.com (Arthur LAMBERT) Date: Mon, 9 Apr 2018 15:58:52 +0200 Subject: issue with kexec/kdump on imx6ull In-Reply-To: <20180329205413.GG16141@n2100.armlinux.org.uk> References: <20180320100427.GA21933@arthur-bzh> <20180320104302.GG2743@n2100.armlinux.org.uk> <20180320150723.GH2743@n2100.armlinux.org.uk> <20180320171608.GB32282@arthur-bzh> <20180320191259.GI2743@n2100.armlinux.org.uk> <20180321132548.GA32618@arthur-bzh> <20180329205413.GG16141@n2100.armlinux.org.uk> Message-ID: <20180409135852.GA22168@arthur-bzh> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Russell, I was finally able to make it work by using mainline kernel (v4.16-rc7) : # uname -a Linux buildroot-imx6ull-evk 4.16.0-rc7 #2 SMP Mon Apr 9 10:00:16 CEST 2018 armv7l GNU/Linux # sh kx.sh Try gzip decompression. kernel: 0xb6836008 kernel_size: 0x661cb8 MEMORY RANGES 0000000080000000-000000009fffffff (0) zImage header: 0x016f2818 0x00000000 0x00661cb8 zImage size 0x661cb8, file size 0x661cb8 zImage requires 0x00672cb8 bytes offset 0x00003ae0 tag 0x5a534c4b size 8 Decompressed kernel sizes: text+data 0x01073700 bss 0x0078805c total 0x017fb75c Resulting kernel space: 0x017fb75c Reserved memory ranges 0000000098000000-000000009b1fffff (0) Coredump memory ranges 0000000080000000-0000000097ffffff (0) 000000009b200000-000000009fffffff (0) phys offset = 0x80000000, page offset = c0000000 Using 32-bit ELF core format get_crash_notes_per_cpu: crash_notes addr = 9bbc3300, size = 180 Elf header: p_type = 4, p_offset = 0x9bbc3300 p_paddr = 0x9bbc3300 p_vaddr = 0x0 p_filesz = 0xb4 p_memsz = 0xb4 vmcoreinfo header: p_type = 4, p_offset = 0x9614e000 p_paddr = 0x9614e000 p_vaddr = 0x0 p_filesz = 0x1024 p_memsz = 0x1024 Elf header: p_type = 1, p_offset = 0x80000000 p_paddr = 0x80000000 p_vaddr = 0xc0000000 p_filesz = 0x18000000 p_memsz = 0x18000000 Elf header: p_type = 1, p_offset = 0x9b200000 p_paddr = 0x9b200000 p_vaddr = 0xdb200000 p_filesz = 0x4e00000 p_memsz = 0x4e00000 elfcorehdr: 0x9b100000 crashkernel: [0x98000000 - 0x9b1fffff] (50M) memory range: [0x80000000 - 0x97ffffff] (384M) memory range: [0x9b200000 - 0x9fffffff] (78M) kernel command line: "console=ttymxc0,115200 root=/dev/mmcblk1p2 rootwait rw earlyprintk maxcpus=1 reset_devices elfcorehdr=0x9b100000 mem=50176K" Kernel: address=0x98008000 size=0x017fb75c DT : address=0x99805000 size=0x00007048 kexec_load: entry = 0x98008000 flags = 0x280001 nr_segments = 3 segment[0].buf = 0xb6836008 segment[0].bufsz = 0x661cbc segment[0].mem = 0x98008000 segment[0].memsz = 0x662000 segment[1].buf = 0x2dd578 segment[1].bufsz = 0x7048 segment[1].mem = 0x99805000 segment[1].memsz = 0x8000 segment[2].buf = 0x2dd100 segment[2].bufsz = 0x400 segment[2].mem = 0x9b100000 segment[2].memsz = 0x1000 result2 : 0 do_shutdown : 0 do_exec2 : 0 kx.sh: kexec: success, dump kernel loaded. # echo c > /proc/sysrq-trigger [ 97.644343] sysrq: SysRq : Trigger a crash [ 97.650383] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 97.660345] pgd = 38b1f119 [ 97.663206] [00000000] *pgd=96760835, *pte=00000000, *ppte=00000000 [ 97.670050] Internal error: Oops: 817 [#1] SMP ARM [ 97.674924] Modules linked in: [ 97.678091] CPU: 0 PID: 139 Comm: sh Not tainted 4.16.0-rc7 #2 [ 97.683986] Hardware name: Freescale i.MX6 Ultralite (Device Tree) [ 97.690262] PC is at sysrq_handle_crash+0x50/0x9c [ 97.695046] LR is at sysrq_handle_crash+0x50/0x9c [ 97.699817] pc : [] lr : [] psr: 60000013 [ 97.706154] sp : d677fe30 ip : d677fe30 fp : d677fe44 [ 97.711444] r10: 00000002 r9 : 00cbbfb8 r8 : 00000007 [ 97.716736] r7 : 00000000 r6 : c1035ab8 r5 : 00000001 r4 : 00000000 [ 97.723332] r3 : 00000000 r2 : b11156ce r1 : 00000002 r0 : 00000000 [ 97.729932] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 97.737137] Control: 10c5387d Table: 9675006a DAC: 00000051 [ 97.742962] Process sh (pid: 139, stack limit = 0x6e0a260c) [ 97.748605] Stack: (0xd677fe30 to 0xd6780000) [ 97.753045] fe20: c101aa30 00000063 d677fe7c d677fe48 [ 97.761315] fe40: c04eda00 c04ed39c 00000000 00000000 c04ed928 b11156ce 00000000 00000002 [ 97.769584] fe60: 00cbbfb8 00000000 00000000 c1008908 d677fe94 d677fe80 c04ee01c c04ed934 [ 97.777854] fe80: d63166c0 c04edfa4 d677feb4 d677fe98 c02a23f0 c04edfb0 d676fdc0 c1008908 [ 97.786125] fea0: c02a238c d677ff68 d677ff34 d677feb8 c0236464 c02a2398 d677fedc d677fec8 [ 97.794395] fec0: c018c4ec c01706ac c107ab51 d604a1fc d677fef4 d677fee0 c018c8bc c018c478 [ 97.802664] fee0: d604a1fc 00000000 d677ff34 d677fef8 c0238594 c018c888 00000001 00000000 [ 97.810935] ff00: c023679c b11156ce 00000002 00000002 d676fdc0 00cbbfb8 d677ff68 c1008908 [ 97.819204] ff20: 00cbbfb8 00000002 d677ff64 d677ff38 c02366f4 c0236434 00000000 d676fdc0 [ 97.827474] ff40: d676fdc0 d676fdc0 00000000 00000000 c1008908 00cbbfb8 d677ffa4 d677ff68 [ 97.835743] ff60: c02368fc c0236658 00000000 00000000 ffffffff b11156ce 00000001 000c3c3c [ 97.844011] ff80: 00000001 00cbbfb8 00000004 c01011c4 d677e000 00000000 00000000 d677ffa8 [ 97.852280] ffa0: c0101000 c02368b8 000c3c3c 00000001 00000001 00cbbfb8 00000002 00000000 [ 97.860548] ffc0: 000c3c3c 00000001 00cbbfb8 00000004 00000001 00000020 00000000 00092380 [ 97.868819] ffe0: 000c32f4 be897750 00019c14 b6ecd888 60000010 00000001 9bfde861 9bfdec61 [ 97.877051] Backtrace: [ 97.879621] [] (sysrq_handle_crash) from [] (__handle_sysrq+0xd8/0x250) [ 97.888048] r5:00000063 r4:c101aa30 [ 97.891719] [] (__handle_sysrq) from [] (write_sysrq_trigger+0x78/0x90) [ 97.900162] r8:c1008908 r7:00000000 r6:00000000 r5:00cbbfb8 r4:00000002 [ 97.906964] [] (write_sysrq_trigger) from [] (proc_reg_write+0x64/0x8c) [ 97.915388] r5:c04edfa4 r4:d63166c0 [ 97.919069] [] (proc_reg_write) from [] (__vfs_write+0x3c/0x14c) [ 97.926897] r7:d677ff68 r6:c02a238c r5:c1008908 r4:d676fdc0 [ 97.932654] [] (__vfs_write) from [] (vfs_write+0xa8/0x170) [ 97.940059] r10:00000002 r9:00cbbfb8 r8:c1008908 r7:d677ff68 r6:00cbbfb8 r5:d676fdc0 [ 97.947952] r4:00000002 [ 97.950582] [] (vfs_write) from [] (SyS_write+0x50/0xb4) [ 97.957724] r9:00cbbfb8 r8:c1008908 r7:00000000 r6:00000000 r5:d676fdc0 r4:d676fdc0 [ 97.965566] [] (SyS_write) from [] (ret_fast_syscall+0x0/0x28) [ 97.973209] Exception stack(0xd677ffa8 to 0xd677fff0) [ 97.978346] ffa0: 000c3c3c 00000001 00000001 00cbbfb8 00000002 00000000 [ 97.986612] ffc0: 000c3c3c 00000001 00cbbfb8 00000004 00000001 00000020 00000000 00092380 [ 97.994866] ffe0: 000c32f4 be897750 00019c14 b6ecd888 [ 98.000008] r10:00000000 r9:d677e000 r8:c01011c4 r7:00000004 r6:00cbbfb8 r5:00000001 [ 98.007901] r4:000c3c3c [ 98.010520] Code: e3a04000 e5835000 ee074f9a ebf0ae76 (e5c45000) [ 98.017549] Loading crashdump kernel... [ 98.021956] Bye! [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.16.0-rc7 (arthur at arthur-bzh) (gcc version 5.4.0 (Buildroot 2017.05-git-38202-gb94bcd1-dirty)) #2 SMP Mon Apr 9 10:00:16 CEST 2018 [ 0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d [ 0.000000] CPU: div instructions available: patching division code [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] OF: fdt: Machine model: Freescale i.MX6 UlltraLite 14x14 EVK Board [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x98000000 [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] cma: Reserved 64 MiB at 0x9c000000 [ 0.000000] crashkernel reservation failed - No suitable area found. [ 0.000000] random: fast init done [ 0.000000] percpu: Embedded 16 pages/cpu @(ptrval) s36136 r8192 d21208 u65536 [ 0.000000] Built 1 zonelists, mobility grouping off. Total pages: 32512 [ 0.000000] Kernel command line: console=ttymxc0,115200 root=/dev/mmcblk1p2 rootwait rw crashkernel=50M [ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) [ 0.000000] Memory: 40516K/131072K available (10240K kernel code, 493K rwdata, 3116K rodata, 1024K init, 7712K bss, 25020K reserved, 65536K cma-reserved, 0K highmem) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) [ 0.000000] vmalloc : 0xc8800000 - 0xff800000 ( 880 MB) [ 0.000000] lowmem : 0xc0000000 - 0xc8000000 ( 128 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0x(ptrval) - 0x(ptrval) (11232 kB) [ 0.000000] .init : 0x(ptrval) - 0x(ptrval) (1024 kB) [ 0.000000] .data : 0x(ptrval) - 0x(ptrval) ( 494 kB) [ 0.000000] .bss : 0x(ptrval) - 0x(ptrval) (7713 kB) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Running RCU self tests [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU event tracing is enabled. [ 0.000000] RCU lockdep checking is enabled. [ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 [ 0.000000] Switching to timer-based delay loop, resolution 41ns [ 0.000039] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns [ 0.000164] clocksource: mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns [ 0.005752] Console: colour dummy device 80x30 [ 0.005908] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.005994] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.006075] ... MAX_LOCK_DEPTH: 48 [ 0.006152] ... MAX_LOCKDEP_KEYS: 8191 [ 0.006229] ... CLASSHASH_SIZE: 4096 [ 0.006305] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.006382] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.006458] ... CHAINHASH_SIZE: 32768 [ 0.006535] memory used by lock dependency info: 4655 kB [ 0.006613] per task-struct memory footprint: 1536 bytes [ 0.006813] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000) [ 0.006974] pid_max: default: 32768 minimum: 301 [ 0.008341] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.008483] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.016759] CPU: Testing write buffer coherency: ok [ 0.020223] /cpus/cpu at 0 missing clock-frequency property [ 0.020368] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.025930] Setting up static identity map for 0x98100000 - 0x98100078 [ 0.027909] Hierarchical SRCU implementation. [ 0.034865] smp: Bringing up secondary CPUs ... [ 0.034995] smp: Brought up 1 node, 1 CPU [ 0.035089] SMP: Total of 1 processors activated (48.00 BogoMIPS). [ 0.035172] CPU: All CPU(s) started in SVC mode. [ 0.043532] devtmpfs: initialized [ 0.113484] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5 [ 0.116597] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.116806] futex hash table entries: 256 (order: 2, 16384 bytes) [ 0.129894] pinctrl core: initialized pinctrl subsystem [ 0.145757] NET: Registered protocol family 16 [ 0.243835] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.255949] cpuidle: using governor menu [ 0.314869] vdd3p0: supplied by regulator-dummy [ 0.321357] cpu: supplied by regulator-dummy [ 0.327471] vddsoc: supplied by regulator-dummy [ 0.404580] No ATAGs? [ 0.405380] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers. [ 0.405700] hw-breakpoint: maximum watchpoint size is 8 bytes. [ 0.422291] imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver [ 0.652747] mxs-dma 1804000.dma-apbh: initialized [ 0.667748] vgaarb: loaded [ 0.672304] SCSI subsystem initialized [ 0.677915] usbcore: registered new interface driver usbfs [ 0.678738] usbcore: registered new interface driver hub [ 0.679802] usbcore: registered new device driver usb [ 0.691773] i2c i2c-1: IMX I2C adapter registered [ 0.691971] i2c i2c-1: can't use DMA, using PIO instead. [ 0.693984] media: Linux media interface: v0.10 [ 0.694835] Linux video capture interface: v2.00 [ 0.696548] pps_core: LinuxPPS API ver. 1 registered [ 0.696662] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 0.696932] PTP clock support registered [ 0.700494] Advanced Linux Sound Architecture Driver Initialized. [ 0.711609] Bluetooth: Core ver 2.22 [ 0.712158] NET: Registered protocol family 31 [ 0.712264] Bluetooth: HCI device and connection manager initialized [ 0.712573] Bluetooth: HCI socket layer initialized [ 0.712739] Bluetooth: L2CAP socket layer initialized [ 0.713384] Bluetooth: SCO socket layer initialized [ 0.720297] clocksource: Switched to clocksource mxc_timer1 [ 0.723029] VFS: Disk quotas dquot_6.6.0 [ 0.723725] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 0.843933] NET: Registered protocol family 2 [ 0.851780] tcp_listen_portaddr_hash hash table entries: 128 (order: 0, 5120 bytes) [ 0.852217] TCP established hash table entries: 1024 (order: 0, 4096 bytes) [ 0.852463] TCP bind hash table entries: 1024 (order: 3, 36864 bytes) [ 0.854423] TCP: Hash tables configured (established 1024 bind 1024) [ 0.855634] UDP hash table entries: 256 (order: 2, 20480 bytes) [ 0.856792] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes) [ 0.861713] NET: Registered protocol family 1 [ 0.869198] RPC: Registered named UNIX socket transport module. [ 0.869451] RPC: Registered udp transport module. [ 0.869549] RPC: Registered tcp transport module. [ 0.869636] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.896606] Initialise system trusted keyrings [ 0.898871] workingset: timestamp_bits=30 max_order=15 bucket_order=0 [ 0.978841] NFS: Registering the id_resolver key type [ 0.979272] Key type id_resolver registered [ 0.979518] Key type id_legacy registered [ 0.980453] jffs2: version 2.2. (NAND) ?? 2001-2006 Red Hat, Inc. [ 0.987498] fuse init (API version 7.26) [ 1.049192] Key type asymmetric registered [ 1.049606] Asymmetric key parser 'x509' registered [ 1.051654] io scheduler noop registered [ 1.051780] io scheduler deadline registered [ 1.053248] io scheduler cfq registered (default) [ 1.053376] io scheduler mq-deadline registered [ 1.053477] io scheduler kyber registered [ 1.077432] pwm-backlight backlight-display: backlight-display supply power not found, using dummy regulator [ 1.088469] mxsfb 21c8000.lcdif: 21c8000.lcdif supply lcd not found, using dummy regulator [ 1.089401] mxsfb 21c8000.lcdif: failed to find display phandle [ 1.092942] mxsfb: probe of 21c8000.lcdif failed with error -2 [ 1.106588] imx-sdma 20ec000.sdma: Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2 [ 1.107146] imx-sdma 20ec000.sdma: external firmware not found, using ROM firmware [ 1.153209] 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 19, base_baud = 5000000) is a IMX [ 1.949747] console [ttymxc0] enabled [ 1.967204] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 58, base_baud = 5000000) is a IMX [ 2.008218] panel-simple panel: panel supply power not found, using dummy regulator [ 2.142200] brd: module loaded [ 2.251605] loop: module loaded [ 2.279647] fsl-quadspi 21e0000.qspi: n25q256a (32768 Kbytes) [ 2.313340] libphy: Fixed MDIO Bus: probed [ 2.323646] CAN device driver interface [ 2.337116] fec 20b4000.ethernet: 20b4000.ethernet supply phy not found, using dummy regulator [ 2.354010] pps pps0: new PPS source ptp0 [ 2.362097] libphy: fec_enet_mii_bus: probed [ 2.390515] fec 20b4000.ethernet eth0: registered PHC device 0 [ 2.402420] fec 2188000.ethernet: 2188000.ethernet supply phy not found, using dummy regulator [ 2.418083] pps pps1: new PPS source ptp1 [ 2.567075] libphy: fec_enet_mii_bus: probed [ 2.577879] fec 2188000.ethernet eth1: registered PHC device 1 [ 2.591196] usbcore: registered new interface driver asix [ 2.597247] usbcore: registered new interface driver ax88179_178a [ 2.604594] usbcore: registered new interface driver cdc_ether [ 2.611427] usbcore: registered new interface driver net1080 [ 2.617697] usbcore: registered new interface driver cdc_subset [ 2.624478] usbcore: registered new interface driver zaurus [ 2.631127] usbcore: registered new interface driver cdc_ncm [ 2.636995] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 2.643945] ehci-pci: EHCI PCI platform driver [ 2.649005] ehci-mxc: Freescale On-Chip EHCI Host driver [ 2.657739] usbcore: registered new interface driver usb-storage [ 2.676820] imx_usb 2184000.usb: 2184000.usb supply vbus not found, using dummy regulator [ 2.707848] imx_usb 2184200.usb: 2184200.usb supply vbus not found, using dummy regulator [ 2.724690] ci_hdrc ci_hdrc.1: EHCI Host Controller [ 2.731059] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1 [ 2.760484] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00 [ 2.781259] hub 1-0:1.0: USB hub found [ 2.786515] hub 1-0:1.0: 1 port detected [ 2.815182] input: 20cc000.snvs:snvs-powerkey as /devices/soc0/soc/2000000.aips-bus/20cc000.snvs/20cc000.snvs:snvs-powerkey/input/input0 [ 2.843345] input: iMX6UL Touchscreen Controller as /devices/soc0/soc/2000000.aips-bus/2040000.tsc/input/input1 [ 2.875631] snvs_rtc 20cc000.snvs:snvs-rtc-lp: rtc core: registered 20cc000.snvs:snvs-rtc-lp as rtc0 [ 2.886817] i2c /dev entries driver [ 2.897589] IR NEC protocol handler initialized [ 2.908175] IR RC5(x/sz) protocol handler initialized [ 2.913784] IR RC6 protocol handler initialized [ 2.918522] IR JVC protocol handler initialized [ 2.923462] IR Sony protocol handler initialized [ 2.928271] IR SANYO protocol handler initialized [ 2.933365] IR Sharp protocol handler initialized [ 2.938253] IR MCE Keyboard/mouse protocol handler initialized [ 2.944450] IR XMP protocol handler initialized [ 2.972625] imx2-wdt 20bc000.wdog: timeout 60 sec (nowayout=0) [ 2.979962] Bluetooth: HCI UART driver ver 2.3 [ 2.984950] Bluetooth: HCI UART protocol H4 registered [ 2.992033] Bluetooth: HCI UART protocol LL registered [ 3.002078] sdhci: Secure Digital Host Controller Interface driver [ 3.008468] sdhci: Copyright(c) Pierre Ossman [ 3.013257] sdhci-pltfm: SDHCI platform and OF driver helper [ 3.026204] sdhci-esdhc-imx 2190000.usdhc: Got CD GPIO [ 3.077076] mmc0: SDHCI controller on 2190000.usdhc [2190000.usdhc] using ADMA [ 3.129576] mmc1: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA [ 3.164547] usbcore: registered new interface driver usbhid [ 3.170652] usbhid: USB HID core driver [ 3.205588] mmc1: host does not support reading read-only switch, assuming write-enable [ 3.232482] mmc1: new high speed SDHC card at address 0001 [ 3.271876] mmcblk1: mmc1:0001 SD8GB 7.24 GiB [ 3.325903] mmcblk1: p1 p2 [ 3.334319] NET: Registered protocol family 10 [ 3.369117] Segment Routing with IPv6 [ 3.378273] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver [ 3.394259] NET: Registered protocol family 17 [ 3.399069] can: controller area network core (rev 20170425 abi 9) [ 3.406554] NET: Registered protocol family 29 [ 3.411512] can: raw protocol (rev 20170425) [ 3.416314] can: broadcast manager protocol (rev 20170425 t) [ 3.422547] can: netlink gateway (rev 20170425) max_hops=1 [ 3.431564] Key type dns_resolver registered [ 3.455448] Registering SWP/SWPB emulation handler [ 3.473848] Loading compiled-in X.509 certificates [ 3.568479] imx_thermal tempmon: Commercial CPU temperature grade - max:95C critical:90C passive:85C [ 3.589004] asoc-simple-card sound: wm8960-hifi <-> 202c000.sai mapping ok [ 3.746667] snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock to 1970-01-01 00:01:41 UTC (101) [ 3.759849] cfg80211: Loading compiled-in X.509 certificates for regulatory database [ 3.775807] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [ 3.785144] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 [ 3.794164] cfg80211: failed to load regulatory.db [ 3.799250] VSD_3V3: disabling [ 3.802783] ALSA device list: [ 3.805811] #0: mx6ul-wm8960 [ 3.826671] EXT4-fs (mmcblk1p2): couldn't mount as ext3 due to feature incompatibilities [ 4.042470] EXT4-fs (mmcblk1p2): recovery complete [ 4.054502] EXT4-fs (mmcblk1p2): mounted filesystem with ordered data mode. Opts: (null) [ 4.063081] VFS: Mounted root (ext4 filesystem) on device 179:2. [ 4.089493] devtmpfs: mounted [ 4.098531] Freeing unused kernel memory: 1024K [ 4.337187] EXT4-fs (mmcblk1p2): re-mounted. Opts: errors=remount-ro,data=ordered I am not able to get dump in /proc/vmcore or /var/crash but this is probably something to configure I guess : # ls /proc/vmcore /var/crash ls: /proc/vmcore: No such file or directory ls: /var/crash: No such file or directory