[3/4] init: free_initmem: poison freed init memory
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Message ID 1550159977-8949-4-git-send-email-rppt@linux.ibm.com
State Superseded
Headers show
Series
  • provide a generic free_initmem implementation
Related show

Commit Message

Mike Rapoport Feb. 14, 2019, 3:59 p.m. UTC
Various architectures including x86 poison the freed init memory.
Do the same in the generic free_initmem implementation and switch sparc32
architecture that is identical to the generic code over to it now.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
---
 arch/sparc/mm/init_32.c | 5 -----
 init/main.c             | 2 +-
 2 files changed, 1 insertion(+), 6 deletions(-)

Patch
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diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index d900952..77e8341 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -294,11 +294,6 @@  void __init mem_init(void)
 	mem_init_print_info(NULL);
 }
 
-void free_initmem (void)
-{
-	free_initmem_default(POISON_FREE_INITMEM);
-}
-
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
diff --git a/init/main.c b/init/main.c
index 38d69e0..9a61e9c 100644
--- a/init/main.c
+++ b/init/main.c
@@ -1049,7 +1049,7 @@  static inline void mark_readonly(void)
 
 void __weak free_initmem(void)
 {
-	free_initmem_default(-1);
+	free_initmem_default(POISON_FREE_INITMEM);
 }
 
 static int __ref kernel_init(void *unused)