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 sw0312.kim@samsung.com --- I think there was some issue sending my previous mail, so I resend patch again. --- security/smack/smack_lsm.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 69fdc38..d1bb411 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -1673,6 +1673,9 @@ 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); /*