user/sven/linux.git/tools/testing/selftests/cgroup, branch v5.4.249

selftests: cgroup: Test open-time cgroup namespace usage for migration checks

2022-04-15T12:18:41Z

commit bf35a7879f1dfb0d050fe779168bcf25c7de66f5 upstream. When a task is writing to an fd opened by a different task, the perm check should use the cgroup namespace of the latter task. Add a test for it. Tested-by: Michal Koutný Signed-off-by: Tejun Heo [OP: backport to v5.4: adjust context, add wait.h and fcntl.h includes] Signed-off-by: Ovidiu Panait Signed-off-by: Greg Kroah-Hartman

selftests: cgroup: Test open-time credential usage for migration checks

2022-04-15T12:18:41Z

commit 613e040e4dc285367bff0f8f75ea59839bc10947 upstream. When a task is writing to an fd opened by a different task, the perm check should use the credentials of the latter task. Add a test for it. Tested-by: Michal Koutný Signed-off-by: Tejun Heo [OP: backport to v5.4: adjust context] Signed-off-by: Ovidiu Panait Signed-off-by: Greg Kroah-Hartman

selftests: cgroup: Make cg_create() use 0755 for permission instead of 0644

2022-04-15T12:18:41Z

commit b09c2baa56347ae65795350dfcc633dedb1c2970 upstream. 0644 is an odd perm to create a cgroup which is a directory. Use the regular 0755 instead. This is necessary for euid switching test case. Reviewed-by: Michal Koutný Signed-off-by: Tejun Heo Signed-off-by: Ovidiu Panait Signed-off-by: Greg Kroah-Hartman

tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference

2020-08-26T08:40:57Z

[ Upstream commit d830020656c5b68ced962ed3cb51a90e0a89d4c4 ] Haven't reproduced this issue. This PR is does a minor code cleanup. Signed-off-by: Gaurav Singh Signed-off-by: Andrew Morton Reviewed-by: Andrew Morton Cc: Shuah Khan Cc: Tejun Heo Cc: Michal Koutn Cc: Roman Gushchin Cc: Christian Brauner Cc: Chris Down Link: http://lkml.kernel.org/r/20200726013808.22242-1-gaurav1086@gmail.com Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin

kselftests: cgroup: Avoid the reuse of fd after it is deallocated

2020-01-26T09:01:07Z

[ Upstream commit d671fa6393d6788fc65555d4643b71cb3a361f36 ] It is necessary to set fd to -1 when inotify_add_watch() fails in cg_prepare_for_wait. Otherwise the fd which has been closed in cg_prepare_for_wait may be misused in other functions such as cg_enter_and_wait_for_frozen and cg_freeze_wait. Fixes: 5313bfe425c8 ("selftests: cgroup: add freezer controller self-tests") Signed-off-by: Hewenliang Signed-off-by: Tejun Heo Signed-off-by: Sasha Levin

kselftests: cgroup: add freezer mkdir test

2019-09-12T21:04:40Z

Add a new cgroup freezer selftest, which checks that if a cgroup is frozen, their new child cgroups will properly inherit the frozen state. It creates a parent cgroup, freezes it, creates a child cgroup and populates it with a dummy process. Then it checks that both parent and child cgroup are frozen. Signed-off-by: Roman Gushchin Cc: Tejun Heo Cc: Shuah Khan Signed-off-by: Tejun Heo

cgroup: kselftest: relax fs_spec checks

2019-08-03T14:02:01Z

On my laptop most memcg kselftests were being skipped because it claimed cgroup v2 hierarchy wasn't mounted, but this isn't correct. Instead, it seems current systemd HEAD mounts it with the name "cgroup2" instead of "cgroup": % grep cgroup /proc/mounts cgroup2 /sys/fs/cgroup cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate 0 0 I can't think of a reason to need to check fs_spec explicitly since it's arbitrary, so we can just rely on fs_vfstype. After these changes, `make TARGETS=cgroup kselftest` actually runs the cgroup v2 tests in more cases. Link: http://lkml.kernel.org/r/20190723210737.GA487@chrisdown.name Signed-off-by: Chris Down Cc: Johannes Weiner Cc: Tejun Heo Cc: Roman Gushchin Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

kselftests: cgroup: remove duplicated include from test_freezer.c

2019-07-02T19:29:43Z

Remove duplicated include. Signed-off-by: YueHaibing Signed-off-by: Shuah Khan

kselftest/cgroup: fix incorrect test_core skip

2019-05-30T14:19:17Z

The test_core will skip the test_cgcore_no_internal_process_constraint_on_threads test case if the 'cpu' controller missing in root's subtree_control. In fact we need to set the 'cpu' in subtree_control, to make the testing meaningful. ./test_core ... ok 4 # skip test_cgcore_no_internal_process_constraint_on_threads ... Signed-off-by: Alex Shi Cc: Shuah Khan Cc: Tejun Heo Cc: Roman Gushchin Cc: Claudio Zumbo Cc: Claudio Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Roman Gushchin Acked-by: Tejun Heo Signed-off-by: Shuah Khan

kselftest/cgroup: fix unexpected testing failure on test_core

2019-05-30T14:19:17Z

The cgroup testing relys on the root cgroup's subtree_control setting, If the 'memory' controller isn't set, some test cases will be failed as following: $sudo ./test_core not ok 1 test_cgcore_internal_process_constraint ok 2 test_cgcore_top_down_constraint_enable not ok 3 test_cgcore_top_down_constraint_disable ... To correct this unexpected failure, this patch write the 'memory' to subtree_control of root to get a right result. Signed-off-by: Alex Shi Cc: Shuah Khan Cc: Tejun Heo Cc: Roman Gushchin Cc: Claudio Zumbo Cc: Claudio Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Roman Gushchin Acked-by: Tejun Heo Signed-off-by: Shuah Khan