The commit is pushed to "branch-rh7-3.10.0-1127.18.2.vz7.163.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git after rh7-3.10.0-1127.18.2.vz7.163.41 ------> commit 6fd72185d1f282076b35b1de3d5435113897b835 Author: Valeriy Vdovin <valeriy.vdo...@virtuozzo.com> Date: Thu Oct 29 17:01:04 2020 +0300
ve/cgroup: change resource release order in ve_drop_context This fixes 87cb5fdb5b5c77ac617b46a0fe118a7d50a77b1c In the mentioned patch in cgroup_show_options ve->ve_ns is checked to ensure that ve->root_css_set is usable. But in ve_drop_context root_css_set is being released before ve_ns, which is a bug. root_css_set will now be set to NULL after ve_ns is released. This reordering only affects the described piece of code in cgroup_show_options. https://jira.sw.ru/browse/PSBM-121438 Signed-off-by: Valeriy Vdovin <valeriy.vdo...@virtuozzo.com> Reviewed-by: Kirill Tkhai <ktk...@virtuozzo.com> --- kernel/ve/ve.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/ve/ve.c b/kernel/ve/ve.c index db26cbd4..f61b1fe 100644 --- a/kernel/ve/ve.c +++ b/kernel/ve/ve.c @@ -595,9 +595,6 @@ static void ve_drop_context(struct ve_struct *ve) struct nsproxy *ve_ns = ve->ve_ns; struct net *net = ve->ve_netns; - put_css_set_taskexit(ve->root_css_set); - ve->root_css_set = NULL; - ve->ve_netns = NULL; put_net(net); @@ -606,6 +603,9 @@ static void ve_drop_context(struct ve_struct *ve) synchronize_rcu(); put_nsproxy(ve_ns); + put_css_set_taskexit(ve->root_css_set); + ve->root_css_set = NULL; + ve_hook_iterate_fini(VE_SHUTDOWN_CHAIN, ve); put_cred(ve->init_cred); _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel