Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=404aae5d420ec543e2e8434f7ec0edf5e2d2b0c4
Commit:     404aae5d420ec543e2e8434f7ec0edf5e2d2b0c4
Parent:     4e886c29610f4374d8971ec7a248f011cc3bd73a
Author:     Greg Kroah-Hartman <[EMAIL PROTECTED]>
AuthorDate: Sun Jan 27 10:29:20 2008 -0800
Committer:  Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Sun Jan 27 15:01:39 2008 -0800

    x86: fix runtime error in arch/x86/kernel/cpu/mcheck/mce_amd_64.c
    
    This problem is due to the kobject rework recently done in this file.
    
    The mce_amd_64.c code uses some wierd forward calls to back out of the
    recursive way the code creates kobjects.  Because of this, we need to
    verify that we have really created a kobject before calling
    kobject_uevent().
    
    Many thanks to Yinghai Lu <[EMAIL PROTECTED]> for reporting the
    problem and testing.
    
    Cc: Yinghai Lu <[EMAIL PROTECTED]>
    Cc: Jacob Shin <[EMAIL PROTECTED]>
    Cc: Ingo Molnar <[EMAIL PROTECTED]>
    Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
 arch/x86/kernel/cpu/mcheck/mce_amd_64.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd_64.c 
b/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
index 7535887..073afa7 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
@@ -450,7 +450,8 @@ recurse:
        if (err)
                goto out_free;
 
-       kobject_uevent(&b->kobj, KOBJ_ADD);
+       if (b)
+               kobject_uevent(&b->kobj, KOBJ_ADD);
 
        return err;
 
-
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