RE: [PATCH] exfat: fix range validation error in alloc and free cluster

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> There is check error in range condition that can never be entered even
> with invalid input.
> Replace incorrent checking code with already existing valid checker.
> 
> Signed-off-by: hyeongseok.kim <hyeongseok@xxxxxxxxx>

Acked-by: Sungjong Seo <sj1557.seo@xxxxxxxxxxx>

Looks good. Thank you!

> ---
>  fs/exfat/fatent.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/exfat/fatent.c b/fs/exfat/fatent.c index 267e5e0..4e5c5c9
> 100644
> --- a/fs/exfat/fatent.c
> +++ b/fs/exfat/fatent.c
> @@ -169,7 +169,7 @@ int exfat_free_cluster(struct inode *inode, struct
> exfat_chain *p_chain)
>  		return 0;
> 
>  	/* check cluster validation */
> -	if (p_chain->dir < 2 && p_chain->dir >= sbi->num_clusters) {
> +	if (!is_valid_cluster(sbi, p_chain->dir)) {
>  		exfat_err(sb, "invalid start cluster (%u)", p_chain->dir);
>  		return -EIO;
>  	}
> @@ -346,7 +346,7 @@ int exfat_alloc_cluster(struct inode *inode, unsigned
> int num_alloc,
>  	}
> 
>  	/* check cluster validation */
> -	if (hint_clu < EXFAT_FIRST_CLUSTER && hint_clu >= sbi->num_clusters)
> {
> +	if (!is_valid_cluster(sbi, hint_clu)) {
>  		exfat_err(sb, "hint_cluster is invalid (%u)",
>  			hint_clu);
>  		hint_clu = EXFAT_FIRST_CLUSTER;
> --
> 2.7.4





[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux