Re: [Crash-utility] crash can not read ia64 lkcd v9 dump
Hello Dave,
* Dave Anderson <anderson(a)redhat.com> [2006-12-08 16:56]:
"vmlinux-2.6.5-7.282-debug" must have debug information right? Crash
will not work without at least one debug-full vmlinux file on the command
line, and since it works without the map.4, it must be debug-full.
vmlinux-2.6.5-7.282-debug was compiled with -g.
> Without the map.4 argument, crash doesn't complain about the
file
> formats.
...but the virtual addresses probably don't line up completely?
Yes, it doesn't work at all, with and without a mapfile, and I guess
that format changes occurred in the lkcd dump because of this message
crash: LKCD machine specific dump header doesn't match crash version
crash: traceback of currently executing threads may not work
I'm debugging that now. But, if you have some patches already in the
queue that I can try out or something like this, I would be happy. ;)
> Any hints? Thanks!
Yes, the "map.4" file did not return successfully from the
is_system_map() function in symbols.c. That function sanity-checks
the first 100 entries in the file to verify that there are 3 entries
in each line, that the the first entry contains a 64-bit hexadecimal
address, and that the second field contains a single character.
For example, this is an example of a 2.4 ia64 kernel
System.map file:
I know the format of map files. :)
But the problem was easy to fix, see my attachment. You aggree that
the string length must only be smaller. The problem occurs on IA64
here.
What does "head -100 map.4." show?
000d5c59 A __crc_simple_sync_file
0013a785 A __crc_fb_create_modedb
0014bfd1 A __crc_smp_call_function
00363991 A __crc_pci_bus_read_config_byte
004142de A __crc_rwsem_downgrade_wake
0060e766 A __crc_tty_termios_baud_rate
00752358 A __crc_permission
00801678 A __crc_flush_scheduled_work
[...]
Regards,
Bernhard
Attachments:
- attachment.sig (application/pgp-signature — 189 bytes)