rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=6e74/1/0x4000000000000000 softirq=115412/115414 fqs=0
rcu: 	(detected by 1, t=10505 jiffies, g=215153, q=60 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12059 Comm: syz-executor.4 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:lock_acquire+0x47/0x520 kernel/locking/lockdep.c:5722
Code: 41 54 45 89 c4 55 53 48 81 ec b0 00 00 00 48 8d 5c 24 10 89 34 24 48 c1 eb 03 89 4c 24 04 48 c7 44 24 10 b3 8a b5 41 48 01 d8 <48> c7 44 24 18 3d 02 98 8c 48 c7 44 24 20 a0 6c 67 81 c7 00 f1 f1
RSP: 0018:ffffc90000007c90 EFLAGS: 00000082
RAX: fffff52000000f94 RBX: 1ffff92000000f94 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888047f60300
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888047f60300 R15: 0000000000000000
FS:  00007f61863c06c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61863c0d58 CR3: 0000000049fdc000 CR4: 00000000003506f0
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:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xd8/0xc60 net/sched/sch_taprio.c:935
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x203/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:finish_task_switch.isra.0+0x223/0xca0 kernel/sched/core.c:5274
Code: 0a 00 00 44 8b 0d 95 26 e0 0d 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 cc f8 ff ff e8 77 bb 33 00 fb 65 48 8b 1c 25 40 c2 03 00 <48> 8d bb d8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900037af7e8 EFLAGS: 00000202
RAX: 0000000000000101 RBX: ffff88807ce95940 RCX: 1ffffffff2428927
RDX: 0000000000000000 RSI: ffffffff8acc9ec0 RDI: ffffffff8b2fad40
RBP: ffffc900037af830 R08: 0000000000000001 R09: fffffbfff24287e8
R10: ffffffff92143f47 R11: 0000000000000001 R12: ffff8880b983d9f8
R13: ffff888029451dc0 R14: 0000000000000000 R15: ffff8880b983cc80
 context_switch kernel/sched/core.c:5403 [inline]
 __schedule+0xf1a/0x5c00 kernel/sched/core.c:6727
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6904
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x5d/0x70 kernel/locking/spinlock.c:194
 clock_was_set+0x592/0x850 kernel/time/hrtimer.c:972
 timekeeping_inject_offset+0x4d1/0x640 kernel/time/timekeeping.c:1395
 do_adjtimex+0x373/0xaa0 kernel/time/timekeeping.c:2444
 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
 __do_sys_clock_adjtime+0x173/0x280 kernel/time/posix-timers.c:1171
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f618567cda9
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:00007f61863c00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f61857ac050 RCX: 00007f618567cda9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f61856c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f61857ac050 R15: 00007fff885f1b08
 </TASK>
rcu: rcu_preempt kthread starved for 10505 jiffies! g215153 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:27984 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf12/0x5c00 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6817
 schedule_timeout+0x137/0x290 kernel/time/timer.c:2183
 rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 12061 Comm: syz-executor.1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0xa/0x20 kernel/kcov.c:304
Code: f3 0f 1e fa 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 c8 fe ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 89 f2 <89> fe bf 05 00 00 00 e9 aa fe ff ff 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900036bfa98 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff8880b9844a40 RCX: ffffffff817b4608
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000005 R12: ffffed1017308949
R13: 0000000000000001 R14: ffff8880b9844a48 R15: ffff8880b993de40
FS:  00007f125bb4a6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f125afa071c CR3: 00000000304f5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 csd_lock_wait kernel/smp.c:311 [inline]
 smp_call_function_many_cond+0x508/0x1550 kernel/smp.c:855
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2087 [inline]
 text_poke_bp_batch+0x22b/0x750 arch/x86/kernel/alternative.c:2297
 text_poke_flush arch/x86/kernel/alternative.c:2488 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2485 [inline]
 text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2495
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x1d7/0x400 kernel/jump_label.c:829
 static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 __sched_core_enable kernel/sched/core.c:398 [inline]
 sched_core_get+0x86/0xa0 kernel/sched/core.c:422
 sched_core_alloc_cookie kernel/sched/core_sched.c:18 [inline]
 sched_core_share_pid+0x421/0xa10 kernel/sched/core_sched.c:185
 __do_sys_prctl+0xf7e/0x1f70 kernel/sys.c:2703
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f125ae7cda9
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:00007f125bb4a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007f125afabf80 RCX: 00007f125ae7cda9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000003e
RBP: 00007f125aec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f125afabf80 R15: 00007fff76229888
 </TASK>