[PATCH 4.19/5.4/5.10/5.15/6.1 0/1] sch_netem: fix issues in netem_change() vs get_dist_table()

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Subject: [PATCH 4.19/5.4/5.10/5.15/6.1 0/1] sch_netem: fix issues in netem_change() vs get_dist_table()
From: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Date: Sun, 13 Aug 2023 23:07:45 +0300
Cc: Fedor Pchelkin <pchelkin@xxxxxxxxx>, Jamal Hadi Salim <jhs@xxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Simon Horman <simon.horman@xxxxxxxxxxxx>, netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Alexey Khoroshilov <khoroshilov@xxxxxxxxx>, lvc-project@xxxxxxxxxxxxxxxx, Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>

Commit 2174a08db80d ("sch_netem: acquire qdisc lock in netem_change()")
was backported to older stables where it is causing 'sleeping in invalid
context' bug. The following patch fixes the problem and can be cleanly
applied to the stable branches affected. It was backported to 6.4.y about
a month ago.

Follow-Ups:
- Re: [PATCH 4.19/5.4/5.10/5.15/6.1 0/1] sch_netem: fix issues in netem_change() vs get_dist_table()
  - From: Greg Kroah-Hartman
- [PATCH 4.19/5.4/5.10/5.15/6.1 1/1] sch_netem: fix issues in netem_change() vs get_dist_table()
  - From: Fedor Pchelkin

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