From 6ca56813f4a589f536adceb42882855d91fb1125 Mon Sep 17 00:00:00 2001 From: John Johansen Date: Sun, 9 Nov 2025 14:16:54 -0800 Subject: [PATCH] apparmor: fix rlimit for posix cpu timers Posix cpu timers requires an additional step beyond setting the rlimit. Refactor the code so its clear when what code is setting the limit and conditionally update the posix cpu timers when appropriate. Fixes: baa73d9e478ff ("posix-timers: Make them configurable") Reviewed-by: Georgia Garcia Signed-off-by: John Johansen --- security/apparmor/resource.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/security/apparmor/resource.c b/security/apparmor/resource.c index 8e80db3ae21c..64212b39ba4b 100644 --- a/security/apparmor/resource.c +++ b/security/apparmor/resource.c @@ -196,6 +196,11 @@ void __aa_transition_rlimits(struct aa_label *old_l, struct aa_label *new_l) rules->rlimits.limits[j].rlim_max); /* soft limit should not exceed hard limit */ rlim->rlim_cur = min(rlim->rlim_cur, rlim->rlim_max); + if (j == RLIMIT_CPU && + rlim->rlim_cur != RLIM_INFINITY && + IS_ENABLED(CONFIG_POSIX_TIMERS)) + (void) update_rlimit_cpu(current->group_leader, + rlim->rlim_cur); } } } -- 2.47.3