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| author | Christoph Hellwig <hch@lst.de> | 2019-04-26 10:26:28 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2019-04-28 01:04:07 +1000 |
| commit | 44806b25b2846b46a904bc58ffac40abcab5f559 (patch) | |
| tree | e2927bb8ae160e97a59ca684ba2c1c4750248e5e /init/initramfs.c | |
| parent | 2e5adbd9e97a1c31bf5ee5de754570c8f65337a1 (diff) | |
| download | linux-next-44806b25b2846b46a904bc58ffac40abcab5f559.tar.gz | |
initramfs: poison freed initrd memory
Various architectures including x86 poison the freed initrd memory. Do
the same in the generic free_initrd_mem implementation and switch a few
more architectures that are identical to the generic code over to it now.
Link: http://lkml.kernel.org/r/20190213174621.29297-9-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com> [arm64]
Cc: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Steven Price <steven.price@arm.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'init/initramfs.c')
| -rw-r--r-- | init/initramfs.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/init/initramfs.c b/init/initramfs.c index fcb759a106be..435a428c2af1 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -529,7 +529,8 @@ extern unsigned long __initramfs_size; void __weak free_initrd_mem(unsigned long start, unsigned long end) { - free_reserved_area((void *)start, (void *)end, -1, "initrd"); + free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM, + "initrd"); } #ifdef CONFIG_KEXEC_CORE |