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alistair23-linux/kernel/cgroup
Tycho Andersen b82e91ae63 cgroup1: don't call release_agent when it is ""
[ Upstream commit 2e5383d790 ]

Older (and maybe current) versions of systemd set release_agent to "" when
shutting down, but do not set notify_on_release to 0.

Since 64e90a8acb ("Introduce STATIC_USERMODEHELPER to mediate
call_usermodehelper()"), we filter out such calls when the user mode helper
path is "". However, when used in conjunction with an actual (i.e. non "")
STATIC_USERMODEHELPER, the path is never "", so the real usermode helper
will be called with argv[0] == "".

Let's avoid this by not invoking the release_agent when it is "".

Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-01 11:01:51 +02:00
..
Makefile cgroup: cgroup v2 freezer 2019-04-19 11:26:48 -07:00
cgroup-internal.h cgroup: make TRACE_CGROUP_PATH irq-safe 2019-04-19 11:26:49 -07:00
cgroup-v1.c cgroup1: don't call release_agent when it is "" 2020-04-01 11:01:51 +02:00
cgroup.c cgroup: Iterate tasks that did not finish do_exit() 2020-03-18 07:17:48 +01:00
cpuset.c sched/topology: Don't try to build empty sched domains 2019-10-29 09:58:45 +01:00
debug.c kernel: cgroup: fix misuse of %x 2019-05-06 08:47:48 -07:00
freezer.c cgroup: freezer: don't change task and cgroups status unnecessarily 2019-12-31 16:45:06 +01:00
legacy_freezer.c cgroup: rename freezer.c into legacy_freezer.c 2019-04-19 11:26:48 -07:00
namespace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pids.c cgroup: pids: use atomic64_t for pids->limit 2019-12-17 19:56:15 +01:00
rdma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 451 2019-06-19 17:09:08 +02:00
rstat.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00