[PATCH 4.15 28/72] ipv6: fix possible deadlock in rt6_age_examine_exception()

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Eric Dumazet commit 1bfa26ff8c4b7512f4e4efa6df211239223033d4 upstream. syzbot reported a LOCKDEP splat [1] in rt6_age_examine_exception() rt6_age_examine_exception() is

[PATCH 4.15 28/72] ipv6: fix possible deadlock in rt6_age_examine_exception()

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Eric Dumazet commit 1bfa26ff8c4b7512f4e4efa6df211239223033d4 upstream. syzbot reported a LOCKDEP splat [1] in rt6_age_examine_exception() rt6_age_examine_exception() is called while