From 43d86ec93630396b622acf3f9cb88f734d4098e8 Mon Sep 17 00:00:00 2001 From: Gao Xiang Date: Sat, 27 May 2023 04:14:59 +0800 Subject: [PATCH] erofs: use poison pointer to replace the hard-coded address It's safer and cleaner to replace such hard-coded illegal pointer with poison pointers. Signed-off-by: Gao Xiang Reviewed-by: Yue Hu Link: https://lore.kernel.org/r/20230526201459.128169-7-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 637a964ff110..264bf553c287 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 {