Re: [Crash-utility] crash fails with incompatible arguments on current kernel
On Mon, 6 Jun 2011, Dave Anderson wrote:
----- Original Message -----
> Hi,
>
> crash seems to be a victim of the linux version number change. On a
> live system it fails with:
> WARNING: kernels compiled by different gcc versions:
> /root/data/git.linux-2.6/vmlinux: (unknown)
> live system kernel: 4.5.3
>
> WARNING: kernel version inconsistency between vmlinux and live memory
>
> crash: incompatible arguments:
> /root/data/git.linux-2.6/vmlinux is not SMP -- live system is SMP
Thanks for catching that -- can you also please dump/attach the output
of "help -k" on that system?
crash> help -k
flags: 102600
(PER_CPU_OFF|SMP|KMOD_V2|KALLSYMS_V2|NO_DWARF_UNWIND)
stext: 11200
etext: 4c0e40
stext_init: 7b1000
etext_init: 7d6594
init_begin: 7b1000
init_end: 810000
end: 119ce78
cpus: 2
cpus_override: (null)
NR_CPUS: 64 (compiled-in to this version of crash)
kernel_NR_CPUS: 4
ikconfig_flags: 1 (IKCONFIG_AVAIL)
ikconfig_ents: 0
display_bh: 0
highest_irq: (unused/undetermined)
module_list: 3c0009b2500
kernel_module: 756418
mods_installed: 4
module_tree: (not used)
date: Mon Jun 6 21:36:41 2011
proc_version: Linux version 3.0.0-rc1-00180-g0792644-dirty (root@r35lp47) (gcc version
4.5.3 20110121 (Red Hat 4.5.3-3) (GCC) ) #60 SMP PREEMPT Mon Jun 6 21:33:01 CEST 2011
new_utsname:
.sysname: Linux
.nodename: r35lp47
.release: 3.0.0-rc1-00180-g0792644-dirty
.version: #60 SMP PREEMPT Mon Jun 6 21:33:01 CEST 2011
.machine: s390x
.domainname: (none)
kernel_version: 3.0.0
gcc_version: 4.5.3
BUG_bytes: -1
relocate: 0
runq_siblings: 0
__rq_idx[NR_CPUS]: (unused)
__cpu_idx[NR_CPUS]: (unused)
__per_cpu_offset[NR_CPUS]:
000000000263d000 0000000002647000 0000000002651000 000000000265b000
cpu_flags[NR_CPUS]: 7 7 1 1
cpu_possible_map: 0 1 2 3
cpu_present_map: 0 1
cpu_online_map: 0 1
xen_flags: 0 ()
m2p_page: 0
phys_to_machine_mapping: 0
p2m_table_size: 0
p2m_mapping_cache[512]: (use "help -K" to view cache contents)
last_mapping_read: 0
p2m_cache_index: 0
p2m_pages_searched: 0
p2m_mfn_cache_hits: 0
p2m_page_cache_hits: 0
pvops_xen:
p2m_top: 0
p2m_top_entries: 0
p2m_missing: 0
crash>
Anyway, to avoid any false positives, I'll probably make the patch
check for "Linux version 2." or "Linux version 3."
Yup, thought about that too. I guess you're right, the chance that
we'll have a Linux 4 in this decade is not that big :-)
Regards,
Sebastian
Thanks,
Dave
>
> as a workaround I've used:
> ---
> kernel.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- a/kernel.c
> +++ b/kernel.c
> @@ -1031,7 +1031,7 @@ verify_namelist()
> found = FALSE;
> sprintf(buffer3, "(unknown)");
> while (fgets(buffer, BUFSIZE-1, pipe)) {
> - if (!strstr(buffer, "Linux version 2."))
> + if (!strstr(buffer, "Linux version "))
> continue;
>
> if (strstr(buffer, kt->proc_version)) {
>
>
> Regards,
> Sebastian
>
> --
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