rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=6374/1/0x4000000000000000 softirq=19690/19690 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=13097, q=152 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6231 Comm: syz-executor.0 Not tainted 6.16.0-rc7-syzkaller-g5f33ebd2018c #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0x61/0x360 kernel/locking/lockdep.c:5834
Code: 24 58 0f 1f 44 00 00 65 8b 05 9f 95 01 11 83 f8 08 0f 83 b8 01 00 00 89 c0 48 0f a3 05 48 a3 03 0e 73 16 e8 f1 f0 08 00 84 c0 <75> 0d f6 05 6f 86 ed 0d 01 0f 84 d7 01 00 00 83 3d 69 d4 03 0e 00
RSP: 0018:ffffc90000a08bc0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 9fc5cc1b1dde7500
RDX: 0000000000000000 RSI: ffffffff8be28da0 RDI: ffffffff8be28d60
RBP: ffffffff898d6664 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff898d65a0 R12: 0000000000000000
R13: ffff888034721300 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f31529aa6c0(0000) GS:ffff888125d23000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31529aad58 CR3: 000000002df91000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xc4/0xc90 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x52c/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 cb 7c 57 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 33 ad 20 f6 65 8b 05 cc 99 2f 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc9000492f8e0 EFLAGS: 00000206
RAX: 9fc5cc1b1dde7500 RBX: 0000000000000212 RCX: 9fc5cc1b1dde7500
RDX: 0000000000000007 RSI: ffffffff8d996965 RDI: 0000000000000001
RBP: ffffc9000492f970 R08: ffffffff8fa1ddf7 R09: 1ffffffff1f43bbe
R10: dffffc0000000000 R11: fffffbfff1f43bbf R12: dffffc0000000000
R13: ffff8880b8627ac0 R14: ffff8880b8627ac0 R15: 1ffff92000925f1c
 clock_was_set+0x63b/0x7c0 kernel/time/hrtimer.c:972
 timekeeping_inject_offset+0x35b/0x4b0 kernel/time/timekeeping.c:1446
 do_adjtimex+0x43f/0x9f0 kernel/time/timekeeping.c:2554
 do_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1174 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1165 [inline]
 __x64_sys_clock_adjtime+0x1f7/0x2b0 kernel/time/posix-timers.c:1165
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3151c7cae9
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:00007f31529aa0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f3151d9c050 RCX: 00007f3151c7cae9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f3151cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f3151d9c050 R15: 00007ffcf34ae5d8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g13097 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=6140
rcu: rcu_preempt kthread starved for 10502 jiffies! g13097 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27128 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x16fd/0x4cf0 kernel/sched/core.c:6786
 __schedule_loop kernel/sched/core.c:6864 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6879
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>