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authorDaniel Borkmann <dborkman@redhat.com>2013-06-17 22:52:08 +0200
committerDaniel Borkmann <dborkman@redhat.com>2013-06-17 22:52:08 +0200
commit36a07514e979d4cb2c677331ddc10c9c6080de26 (patch)
tree438dda035654dee0474d8cc6a26e4cda5c006369 /cookie.h
parent9a3134494188611a2866f6e2406296d43913cd4e (diff)
dev: make paths unlikely, simplify code
Simplify code a bit and mark error paths unlikely. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Diffstat (limited to 'cookie.h')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-14 16:43:22 +0000
/a>)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_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 'drivers/usb/renesas_usbhs/Kconfig')