Rohit Persai wrote:
Greetings,
I am trying to open a core file but getting following error. I am sure
that I am using right kernel + kernel-debuginfo package. As following
command on crash log shows version on kernel in use.
# cat crash-log | grep -i 2.4.21
EIP is at check_pgt_cache [kernel] 0x19 (2.4.21-47.ELsmp)
----------------------------------------snip-from-system-on-which-i-am-opening-core-file-----------------------------------------
# uname -r
2.4.21-47.ELsmp
# crash /usr/lib/debug/boot/vmlinux-2.4.21-47.ELsmp.debug
/boot/vmlinux-2.4.21-47.ELsmp case_1843132_vmcore
crash 4.0-6.3
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WARNING: invalid value: smp_num_cpus: -1070037996
crash: /usr/lib/debug/boot/vmlinux-2.4.21-47.ELsmp.debug and
case_1843132_vmcore do not match!
Usage:
crash [-h [opt]][-v][-s][-i file][-d num] [-S] [mapfile] [namelist]
[dumpfile]
Enter "crash -h" for details.
----------------------------------------snip-from-system-on-which-i-am-opening-core-file-----------------------------------------
Question: Why am I getting following message if I am using right set of
packages.
crash: /usr/lib/debug/boot/vmlinux-2.4.21-47.ELsmp.debug and
case_1843132_vmcore do not match!
Any help would be greatly appreciated.
Rohit.
Sorry for the delay -- I'm back from a 2-week break...
Perhaps you've already resolved this issue, but if not, it does
appear that you're doing everything correctly. But when the
value for "smp_num_cpus" was read from the vmcore, it's reading
an integer value of -1070037996 (c0388414). Since that's
clearly nonsensical, it makes no sense continuing.
Since RHEL3 used that brain-dead split vmlinux/vmlinux.debug
format, you'd get a "CRC value does not match" error message
if those two files weren't in sync. And if the host machine
and the vmlinux/vmlinux.debug/vmcore triplet weren't the same
architecture, you'd get a "machine type mismatch" error message.
The only other thing I can suggest is to do this:
# strings /boot/vmlinux-2.4.21-47.ELsmp | grep "Linux version"
...
# strings case_1843132_vmcore | grep "Linux version"
...
and make sure the strings match exactly -- including the
build dates.
It would be easy to say "it must be a corrupt vmcore", so
I won't. But's about as much help as I can come up with.
Dave
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