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authorTobias Klauser <tklauser@distanz.ch>2016-08-18 11:58:41 +0200
committerTobias Klauser <tklauser@distanz.ch>2016-09-15 18:27:48 +0200
commit5ca82e492cd88813f22d40dc2fecaaa2b3dcd51d (patch)
treebc3e6c8dd9119befffa3f51b0e7347bc423245a9 /sig.h
parent93127b0f9515be4b8f1365d7670744fcac0ade16 (diff)
ifpps: Prevent division by zero
Even though it's very unlikely we ever read zero values from the cpu lines in /proc/stat, we should still protect against division by zero. Detected using UBSan. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'sig.h')
0 files changed, 0 insertions, 0 deletions
_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'include/drm/drm_debugfs_crc.h')