From 20413f27163fb1b8b806c0c219dc95eae67c633a Mon Sep 17 00:00:00 2001 From: Xiaotian Feng Date: Wed, 26 May 2010 09:51:10 +0800 Subject: x86, pat: Fix memory leak in free_memtype Reserve_memtype will allocate memory for new memtype, but in free_memtype, after the memtype erased from rbtree, the memory is not freed. Changes since V1: make rbt_memtype_erase return erased memtype so that it can be freed in free_memtype. [ hpa: not for -stable: 2.6.34 and earlier not affected ] Signed-off-by: Xiaotian Feng LKML-Reference: <1274838670-8731-1-git-send-email-dfeng@redhat.com> Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Venkatesh Pallipadi Cc: Jack Steiner Acked-by: Suresh Siddha Signed-off-by: H. Peter Anvin --- arch/x86/mm/pat_internal.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/x86/mm/pat_internal.h') diff --git a/arch/x86/mm/pat_internal.h b/arch/x86/mm/pat_internal.h index 4f39eefa3e61..77e5ba153fac 100644 --- a/arch/x86/mm/pat_internal.h +++ b/arch/x86/mm/pat_internal.h @@ -28,15 +28,15 @@ static inline char *cattr_name(unsigned long flags) #ifdef CONFIG_X86_PAT extern int rbt_memtype_check_insert(struct memtype *new, unsigned long *new_type); -extern int rbt_memtype_erase(u64 start, u64 end); +extern struct memtype *rbt_memtype_erase(u64 start, u64 end); extern struct memtype *rbt_memtype_lookup(u64 addr); extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos); #else static inline int rbt_memtype_check_insert(struct memtype *new, unsigned long *new_type) { return 0; } -static inline int rbt_memtype_erase(u64 start, u64 end) -{ return 0; } +static inline struct memtype *rbt_memtype_erase(u64 start, u64 end) +{ return NULL; } static inline struct memtype *rbt_memtype_lookup(u64 addr) { return NULL; } static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos) -- cgit v1.2.3