rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=d6ec/0/0x1 softirq=6034/6035 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=6453, q=105 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.8.0-rc7-syzkaller-00229-g10d48d70e82d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:netdev_get_num_tc include/linux/netdevice.h:2523 [inline]
RIP: 0010:advance_sched+0x8e/0xca0 net/sched/sch_taprio.c:929
Code: 48 8b 1b 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 e4 65 7f f8 48 8b 1b 48 83 c3 36 48 89 d8 48 c1 e8 03 0f b6 04 28 <84> c0 0f 85 bb 0b 00 00 4c 0f bf 23 49 8d 7e a8 48 89 bc 24 80 00
RSP: 0018:ffffc90000007c90 EFLAGS: 00000017
RAX: 0000000000000000 RBX: ffff88807ba18036 RCX: ffffffff8de94680
RDX: 0000000080010001 RSI: 0000000000000000 RDI: ffff8880228c6340
RBP: dffffc0000000000 R08: ffffffff8181d539 R09: 1ffffffff1f0ad9d
R10: dffffc0000000000 R11: ffffffff89762850 R12: dffffc0000000000
R13: ffffffff89762850 R14: ffff8880228c6340 R15: ffffffff8de95128
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000600 CR3: 000000001536c000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x596/0xd00 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x109/0x3a0 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x92/0xb0 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: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+0x20/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 08 6a 9c 74 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 36 b5 a0 00 f3 0f 1e fa fb f4 <fa> e9 8a cc 0a 00 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffffff8de07ca8 EFLAGS: 00000246
RAX: ffffffff8de94680 RBX: ffff88801a6fd064 RCX: 000000000001d6e9
RDX: 0000000000000001 RSI: ffff88801a6fd000 RDI: ffff88801a6fd064
RBP: 0000000000038f98 R08: ffff8880b9436d8b R09: 1ffff11017286db1
R10: dffffc0000000000 R11: ffffffff8b6750c0 R12: ffff888018fd2000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8e898480
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x11a/0x490 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:134 [inline]
 cpuidle_idle_call kernel/sched/idle.c:215 [inline]
 do_idle+0x374/0x5d0 kernel/sched/idle.c:312
 cpu_startup_entry+0x41/0x60 kernel/sched/idle.c:410
 rest_init+0x2e0/0x300 init/main.c:730
 arch_call_rest_init+0xe/0x10 init/main.c:827
 start_kernel+0x474/0x500 init/main.c:1072
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:555
 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:536
 secondary_startup_64_no_verify+0x171/0x17b
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.819 msecs
rcu: rcu_preempt kthread starved for 10502 jiffies! g6453 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:26256 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2183
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
 kthread+0x2f1/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 5090 Comm: syz-executor357 Not tainted 6.8.0-rc7-syzkaller-00229-g10d48d70e82d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:42 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d e4 c2 1a 0c 48 89 de 5b e9 63 cc 56 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 0d f0 4f 70 7e 65 8b 15 f1 4f 70 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc9000415f798 EFLAGS: 00000202
RAX: ffffffff81879e28 RBX: 1ffff110172888c1 RCX: ffff888017f01dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000415f990 R08: ffffffff81879df7 R09: 1ffff9200082bee4
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880b9444608 R14: ffff8880b953da80 R15: 0000000000000000
FS:  0000555556feb380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556d7bf8e000 CR3: 0000000022fde000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 csd_lock_wait kernel/smp.c:311 [inline]
 smp_call_function_many_cond+0x1868/0x2960 kernel/smp.c:855
 clock_was_set+0x77b/0x830 kernel/time/hrtimer.c:976
 timekeeping_inject_offset+0x4e8/0x580 kernel/time/timekeeping.c:1395
 do_adjtimex+0x515/0xab0 kernel/time/timekeeping.c:2444
 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1171 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
 __x64_sys_clock_adjtime+0x1e3/0x290 kernel/time/posix-timers.c:1162
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f61900d1ee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffeb4d70e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f61900d1ee9
RDX: 00007f61900d1ee9 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffeb4d7140
R13: 0000000000000001 R14: 00007fffeb4d7140 R15: 0000000000000003
 </TASK>