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authorTobias Klauser <tklauser@distanz.ch>2015-09-07 17:24:56 +0200
committerTobias Klauser <tklauser@distanz.ch>2015-09-07 17:24:56 +0200
commit047d69c4eb2cefe9bab654fb570592d3863da792 (patch)
tree1aa5a0957501bc6bf901af3843f265954b1ed966 /curvetun/.gitignore
parentf472d90b141d0e9f0c1033012d6d2be1338b7b1f (diff)
curvetun: Fix issues detected by the Coverity scanner
Fix two issues detected by the Coverity scanner (CID 991819 & CID 991822) Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'curvetun/.gitignore')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-02-02 23:26:49 +0000
49d50a6d69d1d6feb4a&id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff)
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 'tools/perf/Documentation/perf-buildid-cache.txt')