Thanks Dave for looking into the problem i am facing. as suggested, i tried the things. Please see the output below: -------------------------------------- hltncra110731:/home/adil # nm -Bn linux-2.6.32.12-0.7/vmlinux | grep _stext ffffffff82000198 T _stext hltncra110731:/home/adil # cat /proc/kallsyms | grep _stext ffffffff82000198 T _stext hltncra110731:/home/adil # cat /proc/kallsyms | grep -e kernel_config_data -e cpu_possible_mask ffffffff8281a660 R cpu_possible_mask ffffffff82827aa0 r kernel_config_data ffffffff82a16ec0 r __ksymtab_cpu_possible_mask ffffffff82a28730 r __kcrctab_cpu_possible_mask ffffffff82a322b6 r __kstrtab_cpu_possible_mask hltncra110731:/home/adil # -------------------------------------- -------------------------------------- hltncra110731:/home/adil # crash linux-2.6.32.12-0.7/vmlinux crash 5.0.1 Copyright (C) 2002-2010 Red Hat, Inc. 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This GDB was configured as "x86_64-unknown-linux-gnu"... -------------------------------------- After the above output the machine got freezed. After waiting for sometime, i have to hard reboot the machine. There is no crash log generated. I checked the CONFIG_STRICT_DEVMEM: -------------------------------------- hltncra110731:/home/adil # zcat /proc/config.gz | grep CONFIG_STRICT_DEVMEM # CONFIG_STRICT_DEVMEM is not set hltncra110731:/home/adil # -------------------------------------- My running kernel is the one which i have build: -------------------------------------- adil@hltncra110731:~> uname -a Linux hltncra110731 2.6.32.12-crash-crash #66 SMP Thu Feb 9 19:58:42 IST 2012 x86_64 x86_64 x86_64 GNU/Linux adil@hltncra110731:~> -------------------------------------- Does this problem something related to hardware / bios configuration? I am providing the details, if by any chance it helps you: -------------------------------------- adil@hltncra110731:~> cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU 4300 @ 1.80GHz stepping : 2 cpu MHz : 1203.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm bogomips : 3591.03 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU 4300 @ 1.80GHz stepping : 2 cpu MHz : 1803.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm bogomips : 3591.07 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: -------------------------------------- Thanks. Regards, Adil On Fri, Feb 10, 2012 at 9:33 PM, Dave Anderson <anderson@xxxxxxxxxx> wrote: > > > ----- Original Message ----- >> >> And lastly, in all cases where a dumpfile cannot be read correctly, >> first verify that crash works with the live system. Presuming >> t, and it was configured CONFIG_STRICT_DEVMEM, try this: > > Sorry -- cut-and-paste error -- I meant to state "Presuming that > the kernel was *NOT* configured with CONFIG_STRICT_DEVMEM". > >> >> # crash ../linux-2.6.32.12-0.7/vmlinux >> >> If that comes up OK, then we can rule out more fundamental >> failure causes. > > If you did configure the kernel with CONFIG_STRICT_DEVMEM, > then you can try the supplied crash utility memory driver > as a replacement for /dev/mem: > > # cd <path-to>/crash-6.0.3/memory_driver > # make > ... > # insmod crash.ko > > and then try running on the live system. > > Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
