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path: root/tools/lib/api/debug.c
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#include <stdio.h>
#include <stdarg.h>
#include "debug.h"
#include "debug-internal.h"

static int __base_pr(const char *format, ...)
{
	va_list args;
	int err;

	va_start(args, format);
	err = vfprintf(stderr, format, args);
	va_end(args);
	return err;
}

libapi_print_fn_t __pr_warning = __base_pr;
libapi_print_fn_t __pr_info    = __base_pr;
libapi_print_fn_t __pr_debug;

void libapi_set_print(libapi_print_fn_t warn,
		      libapi_print_fn_t info,
		      libapi_print_fn_t debug)
{
	__pr_warning = warn;
	__pr_info    = info;
	__pr_debug   = debug;
}
nt7ce7d89f48834cefece7804d38fc5d85382edf77 (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 'net/irda/irnet/irnet.h')