https://community.nxp.com/t5/i-MX-Processors/iMX7D-Sabre-based-board-sometimes-failed-to-boot/m-p/780361#M121247 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I am using the custom board which is based on iMX7D Sabre board.</P><P>Sometime this board fails to bootup, this issue i am observing only after i moved to&nbsp; latest linux kernel version&nbsp; 4.1.46</P><P>Earlier kernel version 4.1.38, i didn't faced this issue on the same board.</P><P></P><P>Below is the Kernel logs</P><P>1.</P><P><BR />Starting kernel ...</P><P>Uncompressing Linux... done, booting the kernel.<BR />6Booting Linux on physical CPU 0x0<BR />5Linux version 4.1.46-gdcd9f0a-dirty (ee209967@buildjup01) (gcc version 6.2.1 20161016 (Linaro GCC 6.2-2016.11) ) #31 SMP PREEMPT Sat Feb 3 17:35:22 IST 2018<BR />6CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c53c7d<BR />6CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache<BR />6Machine model: Freescale i.MX7D SabreSD Board<BR />6Reserved memory: created CMA memory pool at 0xac000000, size 320 MiB<BR />6Reserved memory: initialized node linux,cma, compatible id shared-dma-pool<BR />6Memory policy: Data cache writealloc<BR />7On node 0 totalpages: 262144<BR />7free_area_init_node: node 0, pgdat 80bfa180, node_mem_map ab758000<BR />7 Normal zone: 2048 pages used for memmap<BR />7 Normal zone: 0 pages reserved<BR />7 Normal zone: 262144 pages, LIFO batch:31<BR />6PERCPU: Embedded 12 pages/cpu @ab71b000 s16780 r8192 d24180 u49152<BR />7pcpu-alloc: s16780 r8192 d24180 u49152 alloc=12*4096<BR />7pcpu-alloc: [0] 0 [0] 1<BR />6Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260096<BR />5Kernel command line: console=ttymxc0,115200 root=/dev/mmcblk2p5 rootwait rw<BR />6PID hash table entries: 4096 (order: 2, 16384 bytes)<BR />6Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)<BR />6Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)<BR />6Memory: 698248K/1048576K available (8418K kernel code, 436K rwdata, 2944K rodata, 436K init, 450K bss, 22648K reserved, 327680K cma-reserved, 0K highmem)<BR />5Virtual kernel memory layout:<BR /> vector : 0xffff0000 - 0xffff1000 ( 4 kB)<BR /> fixmap : 0xffc00000 - 0xfff00000 (3072 kB)<BR /> vmalloc : 0xc0800000 - 0xff000000 (1000 MB)<BR /> lowmem : 0x80000000 - 0xc0000000 (1024 MB)<BR /> pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)<BR /> modules : 0x7f000000 - 0x7fe00000 ( 14 MB)<BR /> .text : 0x80008000 - 0x80b20d1c (11364 kB)<BR /> .init : 0x80b21000 - 0x80b8e000 ( 436 kB)<BR /> .data : 0x80b8e000 - 0x80bfb360 ( 437 kB)<BR /> .bss : 0x80bfe000 - 0x80c6e9c0 ( 451 kB)<BR />6SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1<BR />6Preemptible hierarchical RCU implementation.<BR />6 Additional per-CPU info printed with stalls.<BR />6 RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.<BR />6RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2<BR />6NR_IRQS:16 nr_irqs:16 16<BR />6Architected cp15 timer(s) running at 8.00MHz (phys).<BR />6clocksource arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 440795202120 ns<BR />6sched_clock: 56 bits at 8MHz, resolution 125ns, wraps every 2199023255500ns<BR />6Switching to timer-based delay loop, resolution 125ns<BR />6mxc_clocksource_init 3000000<BR />6Ignoring duplicate/late registration of read_current_timer delay<BR />6clocksource mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 637086815595 ns<BR />6Console: colour dummy device 80x30<BR />6Calibrating delay loop (skipped), value calculated using timer frequency.. 16.00 BogoMIPS (lpj=80000)<BR />6pid_max: default: 32768 minimum: 301<BR />6Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)<BR />6Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)<BR />6CPU: Testing write buffer coherency: ok<BR />3/cpus/cpu@0 missing clock-frequency property<BR />3/cpus/cpu@1 missing clock-frequency property<BR />6CPU0: thread -1, cpu 0, socket 0, mpidr 80000000<BR />6Setting up static identity map for 0x800082c0 - 0x80008318<BR />1Unable to handle kernel NULL pointer dereference at virtual address 00000000<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 00000037<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1pgd = 80004000<BR />1[0000001f] *pgd=00000000<BR />0Internal error: Oops: 5 [#1] PREEMPT SMP ARM<BR />dModules linked in:<BR />dCPU: 0 PID: -1 Comm: ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ Not tainted 4.1.46-gdcd9f0a-dirty #31<BR />dHardware name: Freescale i.MX7 Dual (Device Tree)<BR />dtask: a807d300 ti: a8094000 task.ti: ffffffff<BR />PC is at show_pte+0x24/0x10c<BR />LR is at __do_kernel_fault.part.0+0x50/0x74<BR />pc : [&lt;8001c1e4&gt;] lr : [&lt;80801418&gt;] psr: a0000193<BR />sp : a8096068 ip : 000000e6 fp : 00000014<BR />r10: 00000037 r9 : a80a1fc8 r8 : a807d7c0<BR />r7 : ffffffff r6 : 00000000 r5 : 0000001f r4 : ffffffff<BR />r3 : 80b9f080 r2 : 00000002 r1 : 0000001f r0 : 00001c44<BR />Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel<BR />Control: 10c53c7d Table: 8000406a DAC: 00000015<BR />0Process ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ (pid: -1, stack limit = 0x0000020f)<BR />0Stack: (0xa8096068 to 0x00001fff)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096170 to 0xa80961b8)<BR />6160: 00001c44 0000001f 00000002 80b9f080<BR />6180: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />61a0: 000000c6 a80961b8 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa80962c0 to 0xa8096308)<BR />62c0: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />62e0: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8096308 80801418 8001c1e4<BR />6300: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096410 to 0xa8096458)<BR />6400: 00001c44 0000001f 00000002 80b9f080<BR />6420: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6440: 000000c6 a8096458 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096560 to 0xa80965a8)<BR />6560: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />6580: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a80965a8 80801418 8001c1e4<BR />65a0: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa80966b0 to 0xa80966f8)<BR />66a0: 00001c44 0000001f 00000002 80b9f080<BR />66c0: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />66e0: 000000c6 a80966f8 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096800 to 0xa8096848)<BR />6800: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />6820: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8096848 80801418 8001c1e4<BR />6840: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096950 to 0xa8096998)<BR />6940: 00001c44 0000001f 00000002 80b9f080<BR />6960: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6980: 000000a6 a8096998 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096aa0 to 0xa8096ae8)<BR />CP6Ua1a0:: 00f0a0i1cl44e d 0t0o0 c0o0m0e 1ofn 0l0in0e0<BR />060B2 r80obu9gf0h8t 0up f1ff fCfPUfsf 0<BR />060S00M00P1:f T ot0a0l00 0o0f00 1 fprfofcffefsfsofr<BR /> a6caticva0t:e ad8 (0167.d07c00 Boag80oaM1IPfSc)8 .00<BR />00603C7PU :smileylaugh: 00A0l0l01 4CP U(0s0)0 s0t0a0cr6 tae8d 0i9n6a e8S V8C 0mo8d0e1.<BR />18 8001c16e4d 4<BR />vtm6pafse:0 : ian0i0t0i0al1i93z efd<BR />fff1fUnfaf f<BR />le [t&lt;o8 00h13a2nd1l8&gt;e] k e(_r_ndela bNtUL_Lsv c)p oifnrtoemr de[r&lt;8e0f0e1cr1ee4n&gt;c] e( sath voiw_rpttuael+ 0xa2d4dr/es0sx 100c)0<BR />0[0&lt;01840 0<BR />1c11pged 4=&gt; ]80 00(4sh0o0w0<BR />pte1)[0 0f0r0o00m1 4[] &lt;*80p80g1d4=010080&gt;]0 0(00_<BR />do_kernel_fault.part.0+0x50/0x74) _<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096bf0 to 0xa8096c38)<BR />6be0: 00001c44 0000001f 00000002 80b9f080<BR />6c00: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6c20: 000000a6 a8096c38 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096d40 to 0xa8096d88)<BR />6d40: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />6d60: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8096d88 80801418 8001c1e4<BR />6d80: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096e90 to 0xa8096ed8)<BR />6e80: 00001c44 0000001f 00000002 80b9f080<BR />6ea0: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6ec0: 000000c6 a8096ed8 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096fe0 to 0xa8097028)<BR />6fe0: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />7000: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8097028 80801418 8001c1e4<BR />7020: a0000193 ffffffff</P><P></P><P></P><P>Is someone else seen such issue with iMXD with latest kernel ?</P><P>Any pointer to solve this will help to fix it.</P></BODY></HTML> Sat, 03 Feb 2018 12:28:35 GMT vishnupratap_si 2018-02-03T12:28:35Z https://community.nxp.com/t5/i-MX-Processors/iMX7D-Sabre-based-board-sometimes-failed-to-boot/m-p/780361#M121247 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I am using the custom board which is based on iMX7D Sabre board.</P><P>Sometime this board fails to bootup, this issue i am observing only after i moved to&nbsp; latest linux kernel version&nbsp; 4.1.46</P><P>Earlier kernel version 4.1.38, i didn't faced this issue on the same board.</P><P></P><P>Below is the Kernel logs</P><P>1.</P><P><BR />Starting kernel ...</P><P>Uncompressing Linux... done, booting the kernel.<BR />6Booting Linux on physical CPU 0x0<BR />5Linux version 4.1.46-gdcd9f0a-dirty (ee209967@buildjup01) (gcc version 6.2.1 20161016 (Linaro GCC 6.2-2016.11) ) #31 SMP PREEMPT Sat Feb 3 17:35:22 IST 2018<BR />6CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c53c7d<BR />6CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache<BR />6Machine model: Freescale i.MX7D SabreSD Board<BR />6Reserved memory: created CMA memory pool at 0xac000000, size 320 MiB<BR />6Reserved memory: initialized node linux,cma, compatible id shared-dma-pool<BR />6Memory policy: Data cache writealloc<BR />7On node 0 totalpages: 262144<BR />7free_area_init_node: node 0, pgdat 80bfa180, node_mem_map ab758000<BR />7 Normal zone: 2048 pages used for memmap<BR />7 Normal zone: 0 pages reserved<BR />7 Normal zone: 262144 pages, LIFO batch:31<BR />6PERCPU: Embedded 12 pages/cpu @ab71b000 s16780 r8192 d24180 u49152<BR />7pcpu-alloc: s16780 r8192 d24180 u49152 alloc=12*4096<BR />7pcpu-alloc: [0] 0 [0] 1<BR />6Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260096<BR />5Kernel command line: console=ttymxc0,115200 root=/dev/mmcblk2p5 rootwait rw<BR />6PID hash table entries: 4096 (order: 2, 16384 bytes)<BR />6Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)<BR />6Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)<BR />6Memory: 698248K/1048576K available (8418K kernel code, 436K rwdata, 2944K rodata, 436K init, 450K bss, 22648K reserved, 327680K cma-reserved, 0K highmem)<BR />5Virtual kernel memory layout:<BR /> vector : 0xffff0000 - 0xffff1000 ( 4 kB)<BR /> fixmap : 0xffc00000 - 0xfff00000 (3072 kB)<BR /> vmalloc : 0xc0800000 - 0xff000000 (1000 MB)<BR /> lowmem : 0x80000000 - 0xc0000000 (1024 MB)<BR /> pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)<BR /> modules : 0x7f000000 - 0x7fe00000 ( 14 MB)<BR /> .text : 0x80008000 - 0x80b20d1c (11364 kB)<BR /> .init : 0x80b21000 - 0x80b8e000 ( 436 kB)<BR /> .data : 0x80b8e000 - 0x80bfb360 ( 437 kB)<BR /> .bss : 0x80bfe000 - 0x80c6e9c0 ( 451 kB)<BR />6SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1<BR />6Preemptible hierarchical RCU implementation.<BR />6 Additional per-CPU info printed with stalls.<BR />6 RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.<BR />6RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2<BR />6NR_IRQS:16 nr_irqs:16 16<BR />6Architected cp15 timer(s) running at 8.00MHz (phys).<BR />6clocksource arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 440795202120 ns<BR />6sched_clock: 56 bits at 8MHz, resolution 125ns, wraps every 2199023255500ns<BR />6Switching to timer-based delay loop, resolution 125ns<BR />6mxc_clocksource_init 3000000<BR />6Ignoring duplicate/late registration of read_current_timer delay<BR />6clocksource mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 637086815595 ns<BR />6Console: colour dummy device 80x30<BR />6Calibrating delay loop (skipped), value calculated using timer frequency.. 16.00 BogoMIPS (lpj=80000)<BR />6pid_max: default: 32768 minimum: 301<BR />6Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)<BR />6Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)<BR />6CPU: Testing write buffer coherency: ok<BR />3/cpus/cpu@0 missing clock-frequency property<BR />3/cpus/cpu@1 missing clock-frequency property<BR />6CPU0: thread -1, cpu 0, socket 0, mpidr 80000000<BR />6Setting up static identity map for 0x800082c0 - 0x80008318<BR />1Unable to handle kernel NULL pointer dereference at virtual address 00000000<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 00000037<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1Unable to handle kernel NULL pointer dereference at virtual address 0000001f<BR />1pgd = 80004000<BR />1[0000001f] *pgd=00000000<BR />0Internal error: Oops: 5 [#1] PREEMPT SMP ARM<BR />dModules linked in:<BR />dCPU: 0 PID: -1 Comm: ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ Not tainted 4.1.46-gdcd9f0a-dirty #31<BR />dHardware name: Freescale i.MX7 Dual (Device Tree)<BR />dtask: a807d300 ti: a8094000 task.ti: ffffffff<BR />PC is at show_pte+0x24/0x10c<BR />LR is at __do_kernel_fault.part.0+0x50/0x74<BR />pc : [&lt;8001c1e4&gt;] lr : [&lt;80801418&gt;] psr: a0000193<BR />sp : a8096068 ip : 000000e6 fp : 00000014<BR />r10: 00000037 r9 : a80a1fc8 r8 : a807d7c0<BR />r7 : ffffffff r6 : 00000000 r5 : 0000001f r4 : ffffffff<BR />r3 : 80b9f080 r2 : 00000002 r1 : 0000001f r0 : 00001c44<BR />Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel<BR />Control: 10c53c7d Table: 8000406a DAC: 00000015<BR />0Process ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ (pid: -1, stack limit = 0x0000020f)<BR />0Stack: (0xa8096068 to 0x00001fff)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096170 to 0xa80961b8)<BR />6160: 00001c44 0000001f 00000002 80b9f080<BR />6180: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />61a0: 000000c6 a80961b8 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa80962c0 to 0xa8096308)<BR />62c0: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />62e0: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8096308 80801418 8001c1e4<BR />6300: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096410 to 0xa8096458)<BR />6400: 00001c44 0000001f 00000002 80b9f080<BR />6420: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6440: 000000c6 a8096458 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096560 to 0xa80965a8)<BR />6560: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />6580: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a80965a8 80801418 8001c1e4<BR />65a0: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa80966b0 to 0xa80966f8)<BR />66a0: 00001c44 0000001f 00000002 80b9f080<BR />66c0: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />66e0: 000000c6 a80966f8 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096800 to 0xa8096848)<BR />6800: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />6820: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8096848 80801418 8001c1e4<BR />6840: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096950 to 0xa8096998)<BR />6940: 00001c44 0000001f 00000002 80b9f080<BR />6960: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6980: 000000a6 a8096998 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096aa0 to 0xa8096ae8)<BR />CP6Ua1a0:: 00f0a0i1cl44e d 0t0o0 c0o0m0e 1ofn 0l0in0e0<BR />060B2 r80obu9gf0h8t 0up f1ff fCfPUfsf 0<BR />060S00M00P1:f T ot0a0l00 0o0f00 1 fprfofcffefsfsofr<BR /> a6caticva0t:e ad8 (0167.d07c00 Boag80oaM1IPfSc)8 .00<BR />00603C7PU :smileylaugh: 00A0l0l01 4CP U(0s0)0 s0t0a0cr6 tae8d 0i9n6a e8S V8C 0mo8d0e1.<BR />18 8001c16e4d 4<BR />vtm6pafse:0 : ian0i0t0i0al1i93z efd<BR />fff1fUnfaf f<BR />le [t&lt;o8 00h13a2nd1l8&gt;e] k e(_r_ndela bNtUL_Lsv c)p oifnrtoemr de[r&lt;8e0f0e1cr1ee4n&gt;c] e( sath voiw_rpttuael+ 0xa2d4dr/es0sx 100c)0<BR />0[0&lt;01840 0<BR />1c11pged 4=&gt; ]80 00(4sh0o0w0<BR />pte1)[0 0f0r0o00m1 4[] &lt;*80p80g1d4=010080&gt;]0 0(00_<BR />do_kernel_fault.part.0+0x50/0x74) _<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096bf0 to 0xa8096c38)<BR />6be0: 00001c44 0000001f 00000002 80b9f080<BR />6c00: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6c20: 000000a6 a8096c38 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096d40 to 0xa8096d88)<BR />6d40: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />6d60: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8096d88 80801418 8001c1e4<BR />6d80: a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096e90 to 0xa8096ed8)<BR />6e80: 00001c44 0000001f 00000002 80b9f080<BR />6ea0: ffffffff 0000001f 00000000 ffffffff a807d7c0 a80a1fc8 00000037 00000014<BR />6ec0: 000000c6 a8096ed8 80801418 8001c1e4 a0000193 ffffffff<BR />[&lt;80013218&gt;] (__dabt_svc) from [&lt;8001c1e4&gt;] (show_pte+0x24/0x10c)<BR />[&lt;8001c1e4&gt;] (show_pte) from [&lt;80801418&gt;] (__do_kernel_fault.part.0+0x50/0x74)<BR />[&lt;80801418&gt;] (__do_kernel_fault.part.0) from [&lt;8001c63c&gt;] (do_page_fault+0x370/0x384)<BR />[&lt;8001c63c&gt;] (do_page_fault) from [&lt;800092a8&gt;] (do_DataAbort+0x3c/0xbc)<BR />[&lt;800092a8&gt;] (do_DataAbort) from [&lt;80013218&gt;] (__dabt_svc+0x38/0x60)<BR />Exception stack(0xa8096fe0 to 0xa8097028)<BR />6fe0: 00001c44 0000001f 00000002 80b9f080 ffffffff 0000001f 00000000 ffffffff<BR />7000: a807d7c0 a80a1fc8 00000037 00000014 000000c6 a8097028 80801418 8001c1e4<BR />7020: a0000193 ffffffff</P><P></P><P></P><P>Is someone else seen such issue with iMXD with latest kernel ?</P><P>Any pointer to solve this will help to fix it.</P></BODY></HTML> Sat, 03 Feb 2018 12:28:35 GMT https://community.nxp.com/t5/i-MX-Processors/iMX7D-Sabre-based-board-sometimes-failed-to-boot/m-p/780361#M121247 vishnupratap_si 2018-02-03T12:28:35Z https://community.nxp.com/t5/i-MX-Processors/iMX7D-Sabre-based-board-sometimes-failed-to-boot/m-p/780362#M121248 <HTML><HEAD></HEAD><BODY><P>Hi Vishnu</P><P></P><P>"Unable to handle kernel NULL pointer dereference " errors may be due to ddr errors,</P><P>one can retest memory with ddr test</P><P><A href="https://community.nxp.com/docs/DOC-105652">https://community.nxp.com/docs/DOC-105652</A>&nbsp;</P><P>also one can try with nxp offical releases, like 4.1.15:</P><P><A class="link-titled" href="https://www.nxp.com/support/developer-resources/run-time-software/i.mx-developer-resources/i.mx-6-i.mx-7-i.mx-8-series-software-and-development-tool-resources:IMX_SW" title="https://www.nxp.com/support/developer-resources/run-time-software/i.mx-developer-resources/i.mx-6-i.mx-7-i.mx-8-series-software-and-development-tool-resources:IMX_SW">i.MX Software|NXP</A>&nbsp;</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 05 Feb 2018 10:14:50 GMT https://community.nxp.com/t5/i-MX-Processors/iMX7D-Sabre-based-board-sometimes-failed-to-boot/m-p/780362#M121248 igorpadykov 2018-02-05T10:14:50Z