rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=b3c4/1/0x4000000000000000 softirq=69246/69252 fqs=902
rcu: 	(detected by 1, t=10502 jiffies, g=63277, q=243 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16139 Comm: syz.9.1986 Not tainted 6.12.0-rc5-next-20241101-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:preempt_count_add+0x4/0x190 kernel/sched/core.c:5792
Code: 7c 97 48 8b 3c 24 e8 2b 36 9c 00 eb 8c e9 ee fe ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <41> 57 41 56 53 89 fb 48 c7 c0 80 89 3d 9a 48 c1 e8 03 49 bf 00 00
RSP: 0018:ffffc90000007c78 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880227fe2e8 RCX: ffff8880667a3c00
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff818318bf R09: 1ffffffff203a1f6
R10: dffffc0000000000 R11: ffffffff89c885a0 R12: 0000000000000000
R13: ffffffff89c885a0 R14: ffff8880227fe340 R15: ffff8880667a46c8
FS:  00007f244a1e86c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3b35f1 CR3: 000000006864e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_lock include/linux/spinlock_api_smp.h:132 [inline]
 _raw_spin_lock+0x12/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xab/0xca0 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d 54 d4 9b 0c 48 89 de 5b e9 33 2d 5e 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d4 03 00 65 8b 15 b0 16 6e 7e 81 e2 00 01 ff 00
RSP: 0018:ffffc90004bd7af8 EFLAGS: 00000293
RAX: ffffffff81836436 RBX: ffffc90004bd7ca8 RCX: ffff8880667a3c00
RDX: ffffc9000eacc000 RSI: 00000000052c0c14 RDI: 000000003b9ac9ff
RBP: ffffc90004bd7bb0 R08: ffffffff818363c4 R09: 1ffffffff203a1f6
R10: dffffc0000000000 R11: ffffffff81367550 R12: ffffc90004bd7ca0
R13: 00000000052c0c14 R14: 1ffff9200097af68 R15: 1ffff9200097af94
 __iter_div_u64_rem include/vdso/math64.h:10 [inline]
 timespec64_add_ns include/linux/time64.h:165 [inline]
 ktime_get_real_ts64+0x1f6/0x2a0 kernel/time/timekeeping.c:893
 do_adjtimex+0x3e6/0xb10 kernel/time/timekeeping.c:2689
 do_clock_adjtime kernel/time/posix-timers.c:1171 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1183 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1174 [inline]
 __x64_sys_clock_adjtime+0x1e1/0x290 kernel/time/posix-timers.c:1174
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f244937e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f244a1e8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f2449535f80 RCX: 00007f244937e719
RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000000
RBP: 00007f24493f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2449535f80 R15: 00007ffe97165d18
 </TASK>
rcu: rcu_preempt kthread starved for 8698 jiffies! g63277 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:25976 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5327 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6707
 __schedule_loop kernel/sched/core.c:6784 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6799
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc5-next-20241101-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 c0 d4 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d a5 56 a5 00 f3 0f 1e fa fb f4 <fa> 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: ffff88801d2d0000 RBX: ffff888144af8864 RCX: 00000000005bcd81
RDX: 0000000000000001 RSI: ffff888144af8800 RDI: ffff888144af8864
RBP: 000000000003a8b8 R08: ffff8880b8737cdb R09: 1ffff110170e6f9b
R10: dffffc0000000000 R11: ffffffff8bc4d030 R12: ffff88801c3b6000
R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f128440
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec06722d16 CR3: 0000000031c28000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
 cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:264
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:385
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:230 [inline]
 do_idle+0x372/0x5c0 kernel/sched/idle.c:325
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
 start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:314
 common_startup_64+0x13e/0x147
 </TASK>