[PATCH for-4.9.y 0/5] net/sched: init failure fixes

[Amit Pundir <amit.pundir@linaro.org>]

Hi Greg,

Kindly consider/review following net/sched fixes for stable 4.9.y.

This patchset is a follow-up of upstream fix
87b60cfacf9f ("net_sched: fix error recovery at qdisc creation")
cherry-picked on stable 4.9.y.

It fix null pointer dereferences due to uninitialized timer
(qdisc watchdog) or double frees due to ->destroy cleaning up a
second time. Here is the original submission
https://www.mail-archive.com/netdev@vger.kernel.org/msg186003.html

Cherry-picked and build tested on Linux 4.9.116 for ARCH=arm/arm64.

These fixes are applicable for stable 4.4.y kernel as well, but
one of the patches needed a minor rebasing, so I'm resending this
series for 4.4.y in a separate thread to avoid any confusion.

Regards,
Amit Pundir

Nikolay Aleksandrov (5):
  sch_htb: fix crash on init failure
  sch_multiq: fix double free on init failure
  sch_hhf: fix null pointer dereference on init failure
  sch_netem: avoid null pointer deref on init failure
  sch_tbf: fix two null pointer dereferences on init failure

 net/sched/sch_hhf.c    | 3 +++
 net/sched/sch_htb.c    | 5 +++--
 net/sched/sch_multiq.c | 7 +------
 net/sched/sch_netem.c  | 4 ++--
 net/sched/sch_tbf.c    | 5 +++--
 5 files changed, 12 insertions(+), 12 deletions(-)

-- 
2.7.4