crash failure with 2.6.36-rc3 vmcore

From: CAI Qian
Date: Sat Sep 04 2010 - 02:01:34 EST



> crash> mod -S
>
> mod: invalid structure member offset: attribute_owner
> FILE: symbols.c LINE: 8577 FUNCTION: add_symbol_file_kallsyms()
>
> MODULE NAME SIZE OBJECT FILE
> ffffffffa000de60 dm_mod 76230
> /lib/modules/2.6.36-rc2-mm1-wqfix-mkdfix+/kernel/drivers/md/dm-mod.ko
> [/usr/bin/crash] error trace: 4affb0 => 4f3236 => 4f12b5 => 4e587a
>
> 4e587a: OFFSET_verify.clone.4+186
> 4f12b5: add_symbol_file+933
> 4f3236: load_module_symbols+566
> 4affb0: do_module_cmd+1264
>
> mod: invalid structure member offset: attribute_owner
> FILE: symbols.c LINE: 8577 FUNCTION: add_symbol_file_kallsyms()
This failure was due to this commit,

commit 6fd69dc578fa0b1bbc3aad70ae3af9a137211707
Author: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx>
Date: Wed Jul 28 22:09:26 2010 -0700

sysfs: Remove owner field from sysfs struct attribute

Signed-off-by: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 8bf06b6..3c92121 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -22,14 +22,8 @@ struct kobject;
struct module;
enum kobj_ns_type;

-/* FIXME
- * The *owner field is no longer used.
- * x86 tree has been cleaned up. The owner
- * attribute is still left for other arches.
- */
struct attribute {
const char *name;
- struct module *owner;
mode_t mode;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lock_class_key *key;
--
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