From f40399992a245c852ad446e265d1567010db5e10 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Mon, 13 May 2019 17:18:46 -0700 Subject: [PATCH] init: free_initmem: poison freed init memory 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. Link: http://lkml.kernel.org/r/1550515285-17446-4-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport Reviewed-by: Andrew Morton Cc: Christoph Hellwig Cc: Palmer Dabbelt Cc: Richard Kuo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/sparc/mm/init_32.c | 5 ----- init/main.c | 2 +- 2 files changed, 1 insertion(+), 6 deletions(-) diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c index 417f89d5e0b2..046ab116cc8c 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); -} - void sparc_flush_page_to_ram(struct page *page) { unsigned long vaddr = (unsigned long)page_address(page); diff --git a/init/main.c b/init/main.c index 26234570a324..5a2c69b4d7b3 100644 --- a/init/main.c +++ b/init/main.c @@ -1076,7 +1076,7 @@ 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) -- 2.20.1