Description: net: arc_emac: fix koops caused by sk_buff free References: Notes: bwh> CONFIG_ARC_EMAC not enabled, so only affected source-wise. Bugs: upstream: released (4.5-rc6) [c278c253f3d992c6994d08aa0efb2b6806ca396f] 4.19-upstream-stable: N/A "Fixed before branching point" 4.9-upstream-stable: N/A "Fixed before branching point" 3.16-upstream-stable: released (3.16.74) [fe2292f42aa20799497099a88771b4bbf6afdc4e] sid: released (4.5.1-1) 4.19-buster-security: N/A "Fixed before branching point" 4.9-stretch-security: N/A "Fixed before branching point" 3.16-jessie-security: released (3.16.74-1)