From: Seung-Woo Kim Date: Fri, 17 Apr 2015 06:25:04 +0000 (+0900) Subject: Smack: ignore private inode for smack_file_receive X-Git-Tag: firefly_0821_release~176^2~1534^2~4^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9777582e8d604f69ce3a93805065e451487e26b4;p=firefly-linux-kernel-4.4.55.git Smack: ignore private inode for smack_file_receive The dmabuf fd can be shared between processes via unix domain socket. The file of dmabuf fd is came from anon_inode. The inode has no set and get xattr operations, so it can not be shared between processes with smack. This patch fixes just to ignore private inode including anon_inode for smack_file_receive. Signed-off-by: Seung-Woo Kim --- diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 5eae42c8d0d5..f09b8c7cf1e7 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -1658,6 +1658,9 @@ static int smack_file_receive(struct file *file) struct smk_audit_info ad; struct inode *inode = file_inode(file); + if (unlikely(IS_PRIVATE(inode))) + return 0; + smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH); smk_ad_setfield_u_fs_path(&ad, file->f_path); /*