Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Odin Ugedal 2407794f22 cgroup: fix psi monitor for root cgroup ... commit 385aac1519417b89cb91b77c22e4ca21db563cd0 upstream. Fix NULL pointer dereference when adding new psi monitor to the root cgroup. PSI files for root cgroup was introduced in df5ba5be74 by using system wide psi struct when reading, but file write/monitor was not properly fixed. Since the PSI config for the root cgroup isn't initialized, the current implementation tries to lock a NULL ptr, resulting in a crash. Can be triggered by running this as root: $ tee /sys/fs/cgroup/cpu.pressure <<< "some 10000 1000000" Signed-off-by: Odin Ugedal <odin@uged.al> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Acked-by: Dan Schatzberg <dschatzberg@fb.com> Fixes: df5ba5be74 ("kernel/sched/psi.c: expose pressure metrics on root cgroup") Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: stable@vger.kernel.org # 5.2+ Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-02-17 10:35:14 +01:00
..
cgroup-internal.h
cgroup-v1.c	cgroup: Fix memory leak when parsing multiple source parameters	2021-01-06 14:48:37 +01:00
cgroup.c	cgroup: fix psi monitor for root cgroup	2021-02-17 10:35:14 +01:00
cpuset.c	cpuset: fix race between hotplug work and later CPU offline	2020-12-30 11:51:36 +01:00
debug.c
freezer.c
legacy_freezer.c
Makefile
namespace.c
pids.c
rdma.c
rstat.c