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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org a kind ping -- Best regards, Konstantin Khorenko, Virtuozzo Linux Kernel Team On 8/5/26 15:45, Konstantin Khorenko wrote: > The sched_cpulimit_scale_cpufreq sysctl was registered with > .extra1 = SYSCTL_ZERO > .extra2 = SYSCTL_ONE > but with .proc_handler = proc_dointvec. > > proc_dointvec() ignores extra1/extra2, so the intended [0, 1] clamp was > never applied. sysctl_sched_cpulimit_scale_cpufreq is also unsigned int, > so proc_dointvec() is the wrong signedness for it in the first place. > > Use proc_douintvec_minmax() so the already-declared bounds are honoured > and an out-of-range write is rejected. > > Fixes: 4e99efb641da0 ("sched: Port CONFIG_CFS_CPULIMIT feature") > Feature: sched: ability to limit number of CPUs available to a CT > https://virtuozzo.atlassian.net/browse/VSTOR-137234 > Signed-off-by: Konstantin Khorenko > --- > kernel/sched/core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/sched/core.c b/kernel/sched/core.c > index d5b4d8c97a0c7..7580067e7f44a 100644 > --- a/kernel/sched/core.c > +++ b/kernel/sched/core.c > @@ -4753,7 +4753,7 @@ static struct ctl_table sched_core_sysctls[] = { > .data = &sysctl_sched_cpulimit_scale_cpufreq, > .maxlen = sizeof(unsigned int), > .mode = 0644, > - .proc_handler = proc_dointvec, > + .proc_handler = proc_douintvec_minmax, > .extra1 = SYSCTL_ZERO, > .extra2 = SYSCTL_ONE, > }, _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel