x86, mce, AMD: Fix leaving freed data in a list
authorJulia Lawall <julia@diku.dk>
Fri, 13 May 2011 13:52:09 +0000 (15:52 +0200)
committerIngo Molnar <mingo@elte.hu>
Fri, 13 May 2011 15:11:02 +0000 (17:11 +0200)
commitd9a5ac9ef306eb5cc874f285185a15c303c50009
treecceb99495c7e2fb07a24d743fc864e049ca96560
parent77ed23f8d995a01cd8101d84351b567bf5177a30
x86, mce, AMD: Fix leaving freed data in a list

b may be added to a list, but is not removed before being freed
in the case of an error.  This is done in the corresponding
deallocation function, so the code here has been changed to
follow that.

The sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E,E1,E2;
identifier l;
@@

*list_add(&E->l,E1);
... when != E1
    when != list_del(&E->l)
    when != list_del_init(&E->l)
    when != E = E2
*kfree(E);// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/1305294731-12127-1-git-send-email-julia@diku.dk
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/cpu/mcheck/mce_amd.c