[PATCH 4.14 034/110] bridge: check brport attr show in brport_show

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Xin Long [ Upstream commit 1b12580af1d0677c3c3a19e35bfe5d59b03f737f ] Now br_sysfs_if file flush doesn't have attr show. To read it will cause kernel panic after users

[PATCH 4.14 034/110] bridge: check brport attr show in brport_show

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Xin Long [ Upstream commit 1b12580af1d0677c3c3a19e35bfe5d59b03f737f ] Now br_sysfs_if file flush doesn't have attr show. To read it will cause kernel panic after users chmod u+r this file.