rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2645 jiffies s: 1805 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: 5507 Comm: syz-executor.0 Not tainted 6.9.0-rc5-syzkaller-ged30a4a51bb1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:rcu_is_watching+0x0/0xc0 kernel/rcu/tree.c:696 Code: c7 00 4a 0e 8b e8 10 02 67 09 65 8a 05 85 ca 8f 7e 0f b6 c0 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 53 65 ff 05 3b a7 8f 7e e8 ae 01 67 09 48 c7 c3 e8 RSP: 0018:ffffc90000a08e28 EFLAGS: 00000046 RAX: 0000000000010000 RBX: 0000000000000001 RCX: ffffffff817b07ee RDX: ffff88802b0a1e00 RSI: ffffffff817b0bd5 RDI: 0000000000000001 RBP: 000000000003d78c R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880b952cac0 R13: ffff88807b2f2340 R14: ffff8880b952c9c0 R15: ffffffff88ee2910 FS: 00007f7c281706c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558077ae2900 CR3: 000000007fa6e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hrtimer_expire_entry include/trace/events/timer.h:259 [inline] __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x9ea/0xcc0 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:queue_work_on+0x92/0x120 kernel/workqueue.c:2440 Code: ff 48 89 ee e8 1f f4 34 00 48 85 ed 75 42 e8 05 f9 34 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 03 f4 34 00 48 85 db 75 6d e9 f8 34 00 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc RSP: 0018:ffffc90003537bd8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8158c9a4 RDX: ffff88802b0a1e00 RSI: ffffffff8158c9ae RDI: 0000000000000007 RBP: 0000000000000200 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000001 R14: ffff888015081c00 R15: 0000000000000000 queue_work include/linux/workqueue.h:605 [inline] ntp_notify_cmos_timer+0x7a/0x90 kernel/time/ntp.c:671 do_adjtimex+0x729/0xaa0 kernel/time/timekeeping.c:2482 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline] __do_sys_clock_adjtime+0x173/0x290 kernel/time/posix-timers.c:1171 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7c2747cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7c281700c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007f7c2759bf80 RCX: 00007f7c2747cae9 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000000 RBP: 00007f7c274c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f7c2759bf80 R15: 00007ffc5fa33c88