Hi Dave I have problems with the line (in arm.c) machdep->kvbase = symbol_value("_stext") & 0xffff0000UL; In the latest kernels this does not give the correct value. If I change it to the x86 implementation: machdep->kvbase = symbol_value("_stext") & ~KVBASE_MASK; where KVBASE_MASK is defined in defs.h #define KVBASE_MASK (0x1ffffff) Then things work as they should, both on the newer and the older kernels. Without this patch crash complains that vmcore and vmlinux does not match and stops.

Earlier _stext has been in the 0xc0008xxx range, but now I see: c0004000 (A) swapper_pg_dir c0008000 (t) .head.text c0008000 (T) _text c0008000 (T) stext c000804c (t) __create_page_tables c0008100 (t) __turn_mmu_on_loc c000810c (t) __vet_atags c0100000 (t) .text c0100000 (T) __exception_text_start c0100000 (T) _stext c0100000 (T) asm_do_IRQ c0100004 (T) do_undefinstr c010022c (T) do_IPI c0100230 (T) do_DataAbort c01003d8 (T) do_PrefetchAbort c0100470 (T) gic_handle_irq Jan

Jan Karlsson Senior Software Engineer MIB   Sony Mobile Communications Tel: +46703062174 sonymobile.com   -----Original Message----- From: crash-utility-bounces(a)redhat.com [mailto:crash-utility-bounces@redhat.com] On Behalf Of Dave Anderson Sent: tisdag den 27 augusti 2013 15:26 To: Discussion list for crash utility usage, maintenance and development Cc: Fransson, Per 2 Subject: Re: [Crash-utility] Problem with kvbase for ARM ----- Original Message ----- > > > Hi Dave > > > > I have problems with the line (in arm.c) > > machdep->kvbase = symbol_value("_stext") & 0xffff0000UL; > > In the latest kernels this does not give the correct value. If I > change it to the x86 implementation: > > machdep->kvbase = symbol_value("_stext") & ~KVBASE_MASK; > > where KVBASE_MASK is defined in defs.h > > #define KVBASE_MASK (0x1ffffff) > > Then things work as they should, both on the newer and the older kernels. > Without this patch crash complains that vmcore and vmlinux does not > match and stops. OK, that can be changed. Where are the new symbols located? All the older ARM kernels I have start like this: crash> sym -l c0004000 (A) swapper_pg_dir c0008000 (t) .init c0008000 (T) __init_begin c0008000 (T) _sinittext c0008000 (T) _stext c0008000 (T) stext c000804c (t) __create_page_tables c0008104 (t) __enable_mmu_loc c0008110 (t) __enable_mmu c0008140 (t) __turn_mmu_on c0008158 (t) __enable_mmu_end c0008158 (t) __vet_atags ... Dave -- Crash-utility mailing list Crash-utility(a)redhat.com https://www.redhat.com/mailman/listinfo/crash-utility -- Crash-utility mailing list Crash-utility(a)redhat.com https://www.redhat.com/mailman/listinfo/crash-utility