Messages in this thread Patch in this message | | | From | Gao Xiang <> | Subject | [PATCH 6/6] erofs: use poison pointer to replace the hard-coded address | Date | Sat, 27 May 2023 04:14:59 +0800 |
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It's safer and cleaner to replace such hard-coded illegal pointer with poison pointers.
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> --- fs/erofs/zdata.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index 2ea8e7f08372..83df1954b859 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -91,10 +91,8 @@ struct z_erofs_pcluster { struct z_erofs_bvec compressed_bvecs[]; }; -/* let's avoid the valid 32-bit kernel addresses */ - /* the end of a chain of pclusters */ -#define Z_EROFS_PCLUSTER_TAIL ((void *)0x5F0ECAFE) +#define Z_EROFS_PCLUSTER_TAIL ((void *) 0x700 + POISON_POINTER_DELTA) #define Z_EROFS_PCLUSTER_NIL (NULL) struct z_erofs_decompressqueue { -- 2.24.4
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