Unverified Commit 5a6a4ae9 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!8010 mm/mempolicy.c: fix the out-of-bounds access issue in mpol_parse_str 

Merge Pull Request from: @ci-robot 
 
PR sync from: Ze Zuo <zuoze1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/VQE7S2BXJ6WJIU6EJLTPRHHSE4BPZUVC/ 
 
https://gitee.com/openeuler/kernel/issues/I9S5SX 
 
Link:https://gitee.com/openeuler/kernel/pulls/8010

 

Reviewed-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents 45c4db5b e85c21ba

mm/mempolicy.c

+3 −1
Original line number Diff line number Diff line
@@ -1477,7 +1477,8 @@ static inline int sanitize_mpol_flags(int *mode, unsigned short *flags) 
	*flags = *mode & MPOL_MODE_FLAGS;

	*mode &= ~MPOL_MODE_FLAGS;



	if ((unsigned int)(*mode) >=  MPOL_MAX)

	if ((unsigned int)(*mode) >=  MPOL_MAX ||

	    (unsigned int)(*mode) == MPOL_WEIGHTED_INTERLEAVE)

		return -EINVAL;

	if ((*flags & MPOL_F_STATIC_NODES) && (*flags & MPOL_F_RELATIVE_NODES))

		return -EINVAL;
@@ -2989,6 +2990,7 @@ static const char * const policy_modes[] = 
	[MPOL_PREFERRED]  = "prefer",

	[MPOL_BIND]       = "bind",

	[MPOL_INTERLEAVE] = "interleave",

	[MPOL_WEIGHTED_INTERLEAVE] = "weighted interleave",

	[MPOL_LOCAL]      = "local",

	[MPOL_PREFERRED_MANY]  = "prefer (many)",

};