Re: [Crash-utility] crash failed on vmcore created by kdump at an IA64
Dave Anderson wrote:
In any case, if the vmlinux file you're using matches the
Jay Lan wrote:
> Jay Lan wrote:
>> Hi,
> >> I saved off a vmcore from a kexec'ed crashkernel
at an IA64 Altix.
> >> When i tried to run crash (4.0-3.5) on the vmcore, it
failed.
>> Is there a known issue?
Not until now...
And there doesn't look to be anything in 4.0-3.6, -3.7 and 3.8 that
will help.
> Mmm, i built the crash binary myself from the src.rpm. It probably
> picked up mismatched kernel headers?
No, crash doesn't use any kernel headers.
It looks to be a loop-hole in the memory-node-gathering code
for (newer?) CONFIG_DISCONTIG ia64 kernels.
>> % crash System.map* vmlinuz-2.6.18-kdump vmcore
>
BTW, did you mis-copy the command line above? crash can't
use a compressed *vmlinuz* file, unless it's really a renamed ELF
binary?
Yes, it is a ELF 64-bit binary.
(jackhammer,160) file vmlinu*
vmlinuz-2.6.18-kdump: ELF 64-bit LSB executable, IA-64 (Intel 64 bit
architecture), version 1 (SYSV), statically linked, not stripped
(jackhammer,161)
vmcore dumpfile, there's no need to use the System.map file
argument; doing so prevents several commands from being
able to use line numbers.
Anyway, back to the problem at hand...
What happens if you apply the attached patch? (it's against
the current 4.0-3.8 version, but should apply)
Failed at different location.
Thanks,
- jay
(jackhammer,157) crash vmlinuz-2.6.18-kdump vmcore
crash 4.0-3.5
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crash(26323): unaligned access to 0x60000000001bf1cc, ip=0x400000000026d0f0
crash(26323): unaligned access to 0x60000000001bf1d4, ip=0x400000000026d0f0
crash(26323): unaligned access to 0x60000000001bf1dc, ip=0x400000000026d0f0
crash(26323): unaligned access to 0x60000000001bf1e4, ip=0x400000000026d0f0
crash(26323): unaligned access to 0x60000000001bf1ec, ip=0x400000000026d0f0
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This GDB was configured as "ia64-unknown-linux-gnu"...
crash: invalid structure member offset: zone_zone_mem_map
FILE: memory.c LINE: 11401 FUNCTION: dump_memory_nodes()
[./crash] error trace: => 4000000000231c90
4000000000231c90: OFFSET_verify+336
Dave