rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2692 jiffies s: 745 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.10.0-rc1-syzkaller-00267-gcc8ed4d0a848 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x20/0x70 kernel/kcov.c:207 Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d5 03 00 65 8b 15 70 be 6d 7e f7 c2 00 01 ff 00 74 11 c2 00 01 00 00 74 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 RSP: 0018:ffffc90000a18d20 EFLAGS: 00000006 RAX: ffffffff8183a09f RBX: 0000000000000010 RCX: ffff888017ae8000 RDX: 0000000000010002 RSI: 0000000000000001 RDI: 0000000000000020 RBP: 0000000000000001 R08: ffffffff8183a090 R09: 1ffffffff1f5a875 R10: dffffc0000000000 R11: fffffbfff1f5a876 R12: dffffc0000000000 R13: ffff8880b952c980 R14: ffff888011eb4340 R15: 1ffff110172a5930 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f929d52e430 CR3: 0000000073bb2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: enqueue_hrtimer+0x14f/0x3c0 kernel/time/hrtimer.c:1088 __run_hrtimer kernel/time/hrtimer.c:1704 [inline] __hrtimer_run_queues+0x6cb/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline] RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113 Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d5 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 25 13 a3 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246 RAX: ffff888017ae8000 RBX: ffff88801b2dd864 RCX: 000000000004afe9 RDX: 0000000000000001 RSI: ffff88801b2dd800 RDI: ffff88801b2dd864 RBP: 000000000003a5b8 R08: ffff8880b9537d0b R09: 1ffff110172a6fa1 R10: dffffc0000000000 R11: ffffffff8b8669f0 R12: ffff888019b07000 R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eacdf60 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707 cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x375/0x5d0 kernel/sched/idle.c:332 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430 start_secondary+0x100/0x100 arch/x86/kernel/smpboot.c:313 common_startup_64+0x13e/0x147 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.213 msecs