On Thu, Nov 6, 2014 at 11:55 PM, Geoff Levand <geoff at infradead.org> wrote: > Hi Arun, > > On Thu, 2014-11-06 at 21:43 +0530, Arun Chandran wrote: >> Initializing cgroup subsys cpu >> Linux version 3.17.0-rc4+ (arun at arun-OptiPlex-9010) (gcc version 4.9.1 >> 20140505 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.05 - Linaro >> GCC 4.9-2014.05) ) #12 PREEMPT Thu Nov 6 21:38:03 IST 2014 >> CPU: AArch64 Processor [500f0000] revision 0 >> Detected PIPT I-cache on CPU0 >> Ignoring memory block 0x100000000 - 0x180000000 >> Early serial console at MMIO32 0x1c020000 (options '') >> bootconsole [uart0] enabled >> efi: Getting EFI parameters from FDT: >> efi: UEFI not found. >> cma: Failed to reserve 16 MiB > > This error comes from cma_declare_contiguous(). > >> Kernel panic - not syncing: ERROR: Failed to allocate 0x1000 bytes below 0x0. > > This panic comes from memblock_alloc_base(). I guess something has > passed in bad values. > > I wonder if your dtb is compatible with this platform. What if you > don't pass a dtb to kexec? Yes dtb was the problem. Without dtb it works fine root at genericarmv8:~# ./usr/local/sbin/kexec --lite -l vmlinux --command-line= "root=/dev/nfs rw nfsroot=10.162.103.145:/nfs_root/linaro-image-lamp-genericarmv8,nfsvers=3 ip=:::::eth0:dhcp panic=1 console=ttyS0,115200 earlycon=uart8250,mmio32,0x1c020000" root at genericarmv8:~# /usr/local/sbin/kexec --lite -e kexec version: 14.10.21.16.36-ga38e0a6 arch_process_options:85: command_line: (null) arch_process_options:87: initrd: (null) arch_process_options:88: dtb: (null) arch_process_options:89: lite: 1 sd 0:0:0:0: [sda] Synchronizing SCSI cache kexec: Starting new kernel Bye! Initializing cgroup subsys cpu Linux version 3.17.0-rc4+ (arun at arun-OptiPlex-9010) (gcc version 4.9.1 20140505 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.05 - Linaro GCC 4.9-2014.05) ) #12 PREEMPT Thu Nov 6 21:38:03 IST 2014 CPU: AArch64 Processor [500f0000] revision 0 Detected PIPT I-cache on CPU0 Early serial console at MMIO32 0x1c020000 (options '') bootconsole [uart0] enabled efi: Getting EFI parameters from FDT: efi: UEFI not found. cma: Reserved 16 MiB at 40ff000000 /cpus/cpu at 000: unsupported enable-method property: spin-table Built 1 zonelists in Zone order, mobility grouping on. Total pages: 4136960 Kernel command line: root=/dev/nfs rw nfsroot=10.162.103.145:/nfs_root/linaro-image-lamp-genericarmv8,nfsvers=3 ip=:::::eth0:dhcp panic=1 console=ttyS0,115200 earlycon=uart8250,mmio32,0x1c020000 PID hash table entries: 4096 (order: 3, 32768 bytes) Dentry cache hash table entries: 2097152 (order: 12, 16777216 bytes) Inode-cache hash table entries: 1048576 (order: 11, 8388608 bytes) .... ... .. . root at genericarmv8:~# --Arun
