/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #define __weak __attribute__((weak)) void __vwarning(const char *fmt, va_list ap) { if (errno) perror("trace-cmd"); errno = 0; fprintf(stderr, " "); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); } void __warning(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vwarning(fmt, ap); va_end(ap); } void __weak warning(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vwarning(fmt, ap); va_end(ap); } void __vpr_stat(const char *fmt, va_list ap) { vprintf(fmt, ap); printf("\n"); } void __pr_stat(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vpr_stat(fmt, ap); va_end(ap); } void __weak vpr_stat(const char *fmt, va_list ap) { __vpr_stat(fmt, ap); } void __weak pr_stat(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vpr_stat(fmt, ap); va_end(ap); } .git/log/tools/arch/mn10300/include?h=nds-private-remove'>logtreecommitdiff
path: root/tools/arch/mn10300/include
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
committerTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
commit07cd12945551b63ecb1a349d50a6d69d1d6feb4a (patch)
tree75f65eba7eac9277971082a2d5a4cf1370562c0c /tools/arch/mn10300/include
parent7ce7d89f48834cefece7804d38fc5d85382edf77 (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/arch/mn10300/include')