From: Greg Kroah-Hartman Date: Mon, 16 Oct 2023 08:06:36 +0000 (+0200) Subject: 5.15-stable patches X-Git-Tag: v5.15.136~15 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d2c6ec66b20612e9246e6efbdc558b29fccb5243;p=thirdparty%2Fkernel%2Fstable-queue.git 5.15-stable patches added patches: revert-kernel-sched-modify-initial-boot-task-idle-setup.patch --- diff --git a/queue-5.15/revert-kernel-sched-modify-initial-boot-task-idle-setup.patch b/queue-5.15/revert-kernel-sched-modify-initial-boot-task-idle-setup.patch new file mode 100644 index 00000000000..e5368ffb77b --- /dev/null +++ b/queue-5.15/revert-kernel-sched-modify-initial-boot-task-idle-setup.patch @@ -0,0 +1,46 @@ +From caf943a61dec662f645cb53780e7bbc81c1c8ed5 Mon Sep 17 00:00:00 2001 +From: Greg Kroah-Hartman +Date: Mon, 16 Oct 2023 10:05:03 +0200 +Subject: Revert "kernel/sched: Modify initial boot task idle setup" + +From: Greg Kroah-Hartman + +This reverts commit 3569ad59664f9fa3ba1d02a78810773b7f49702b which is +commit cff9b2332ab762b7e0586c793c431a8f2ea4db04 upstream. + +Joel writes: + Let us drop this patch because it caused new tasks-RCU warnings (both + normal and rude tasks RCU) in my stable test rig. We are discussing + the "right fix" and at that time a backport can be done. + +Reported-by: Joel Fernandes +Link: https://lore.kernel.org/r/CAEXW_YT6bH70M1TF2TttB-_kP=RUv_1nsy_sHYi6_0oCrX3mVQ@mail.gmail.com +Cc: Liam R. Howlett +Cc: Peter Zijlstra (Intel) +Signed-off-by: Greg Kroah-Hartman +--- + kernel/sched/core.c | 2 +- + kernel/sched/idle.c | 1 - + 2 files changed, 1 insertion(+), 2 deletions(-) + +--- a/kernel/sched/core.c ++++ b/kernel/sched/core.c +@@ -8725,7 +8725,7 @@ void __init init_idle(struct task_struct + * PF_KTHREAD should already be set at this point; regardless, make it + * look like a proper per-CPU kthread. + */ +- idle->flags |= PF_KTHREAD | PF_NO_SETAFFINITY; ++ idle->flags |= PF_IDLE | PF_KTHREAD | PF_NO_SETAFFINITY; + kthread_set_per_cpu(idle, cpu); + + #ifdef CONFIG_SMP +--- a/kernel/sched/idle.c ++++ b/kernel/sched/idle.c +@@ -397,7 +397,6 @@ EXPORT_SYMBOL_GPL(play_idle_precise); + + void cpu_startup_entry(enum cpuhp_state state) + { +- current->flags |= PF_IDLE; + arch_cpu_idle_prepare(); + cpuhp_online_idle(state); + while (1) diff --git a/queue-5.15/series b/queue-5.15/series index e24a2fb9251..ea1aea5c5b1 100644 --- a/queue-5.15/series +++ b/queue-5.15/series @@ -97,3 +97,4 @@ arm64-armv8_deprecated-move-emulation-functions.patch arm64-armv8_deprecated-move-aarch32-helper-earlier.patch arm64-armv8_deprecated-rework-deprected-instruction-handling.patch arm64-armv8_deprecated-fix-unused-function-error.patch +revert-kernel-sched-modify-initial-boot-task-idle-setup.patch