[Xen-changelog] [xen master] xen/domain: Call lock_profile_deregister_struct() from common code

[patchbot@xxxxxxx]

commit 10e042c43ecdc0d25c6fbcf5c4889dda5d226591
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Mon Sep 3 12:10:48 2018 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Tue Sep 4 13:25:44 2018 +0100

    xen/domain: Call lock_profile_deregister_struct() from common code
    
    lock_profile_register_struct() is called from common code, but the matching
    deregister was previously only called from x86 code.
    
    The practical upshot of this when using CONFIG_LOCK_PROFILE, destroyed 
domains
    on ARM (and in particular, the freed page behind struct domain) remain on 
the
    lockprofile linked list, which will become corrupt when the page is reused.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 xen/arch/x86/domain.c | 1 -
 xen/common/domain.c   | 2 ++
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 688f7fbc4e..cd1419e740 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -298,7 +298,6 @@ struct domain *alloc_domain_struct(void)
 
 void free_domain_struct(struct domain *d)
 {
-    lock_profile_deregister_struct(LOCKPROF_TYPE_PERDOM, d);
     free_xenheap_page(d);
 }
 
diff --git a/xen/common/domain.c b/xen/common/domain.c
index b0988763a3..2fcb35b082 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -274,6 +274,8 @@ static void _domain_destroy(struct domain *d)
 
     free_cpumask_var(d->dirty_cpumask);
 
+    lock_profile_deregister_struct(LOCKPROF_TYPE_PERDOM, d);
+
     free_domain_struct(d);
 }
 
--
generated by git-patchbot for /home/xen/git/xen.git#master

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