rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10501 ticks this GP) idle=643/1/0x4000000000000000 softirq=119508/119508 fqs=0 
	(t=10502 jiffies g=170521 q=769)
rcu: rcu_preempt kthread starved for 10503 jiffies! g170521 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:26400 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
 schedule+0x11b/0x1f0 kernel/sched/core.c:6456
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 3000 Comm: syz.1.10549 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:487
 print_cpu_stall+0x31b/0x600 kernel/rcu/tree_stall.h:631
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
 update_process_times+0x196/0x200 kernel/time/timer.c:1818
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:netif_skb_features+0x35a/0xbb0 net/core/dev.c:3586
Code: b6 04 38 84 c0 48 89 54 24 18 0f 85 48 06 00 00 0f b7 1a 89 de 81 e6 00 20 00 00 31 ff e8 2e b7 35 f9 81 e3 00 20 00 00 75 07 <e8> 41 b4 35 f9 eb 2a e8 3a b4 35 f9 48 8b 44 24 08 48 8d 98 00 01
RSP: 0018:ffffc90000dd0410 EFLAGS: 00000246
RAX: 0000000000000100 RBX: 0000000000000000 RCX: ffff888060221dc0
RDX: ffff888060221dc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880655de140 R08: ffffffff884aad52 R09: fffffbfff1bd2a56
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000000c0
R13: 000061164fdd19e9 R14: 000061164fdd19e9 R15: dffffc0000000000
 validate_xmit_skb+0x84/0x1010 net/core/dev.c:3686
 __dev_queue_xmit+0x14de/0x3230 net/core/dev.c:4239
 neigh_output include/net/neighbour.h:509 [inline]
 ip6_finish_output2+0xee8/0x14f0 net/ipv6/ip6_output.c:126
 dst_output include/net/dst.h:443 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xae0/0x13c0 net/ipv6/ndisc.c:511
 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:schedule_debug kernel/sched/core.c:5600 [inline]
RIP: 0010:__schedule+0x1a70/0x45b0 kernel/sched/core.c:6264
Code: f7 e9 f2 f9 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 59 fa ff ff 48 89 df e8 5c af 8e f7 e9 4c fa ff ff 65 8b 05 10 d9 c7 75 <e9> c7 e7 ff ff e8 06 e6 f7 ff 41 89 c7 83 f8 08 0f 83 ac 2a 00 00
RSP: 0018:ffffc90002dc70c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90002dc0000 RCX: ffff888060221dc0
RDX: 0000000000000010 RSI: ffffffff8a8b3cc0 RDI: ffffffff8ad8f7c0
RBP: ffffc90002dc7290 R08: dffffc0000000000 R09: ffffc90002dc7220
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9b00000
R13: dffffc0000000000 R14: ffff888060221dc0 R15: 0000000000000001
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6777
 irqentry_exit+0x53/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unmap_page_range+0xe6/0x2630 mm/memory.c:1560
Code: 39 fb 0f 83 58 25 00 00 4c 89 b4 24 80 00 00 00 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 aa cb 11 00 <4d> 8b 36 49 83 c6 50 4c 89 f0 48 c1 e8 03 4d 89 e5 42 80 3c 20 00
RSP: 0018:ffffc90002dc7420 EFLAGS: 00000246
RAX: 1ffff1100f3aff10 RBX: 0000000020000000 RCX: ffff888060221dc0
RDX: 0000000000000000 RSI: 0000000021000000 RDI: 0000000020000000
RBP: ffffc90002dc7650 R08: ffffffff81b85e93 R09: fffffbfff1bd2a56
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888079d7f840 R14: ffff888079d7f880 R15: 0000000021000000
 unmap_vmas+0x1f8/0x390 mm/memory.c:1642
 exit_mmap+0x3b6/0x670 mm/mmap.c:3186
 __mmput+0x112/0x3b0 kernel/fork.c:1126
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 get_signal+0xc66/0x14e0 kernel/signal.c:2897
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f718bcd0e79
Code: Unable to access opcode bytes at RIP 0x7f718bcd0e4f.
RSP: 002b:00007f718a12c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f718be6d058 RCX: 00007f718bcd0e79
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000009
RBP: 00007f718bd3e916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f718be6d058 R15: 00007ffcc5da5a58
 </TASK>
NMI backtrace for cpu 1
CPU: 1 PID: 3000 Comm: syz.1.10549 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
 update_process_times+0x196/0x200 kernel/time/timer.c:1818
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:netif_skb_features+0x35a/0xbb0 net/core/dev.c:3586
Code: b6 04 38 84 c0 48 89 54 24 18 0f 85 48 06 00 00 0f b7 1a 89 de 81 e6 00 20 00 00 31 ff e8 2e b7 35 f9 81 e3 00 20 00 00 75 07 <e8> 41 b4 35 f9 eb 2a e8 3a b4 35 f9 48 8b 44 24 08 48 8d 98 00 01
RSP: 0018:ffffc90000dd0410 EFLAGS: 00000246
RAX: 0000000000000100 RBX: 0000000000000000 RCX: ffff888060221dc0
RDX: ffff888060221dc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880655de140 R08: ffffffff884aad52 R09: fffffbfff1bd2a56
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000000c0
R13: 000061164fdd19e9 R14: 000061164fdd19e9 R15: dffffc0000000000
 validate_xmit_skb+0x84/0x1010 net/core/dev.c:3686
 __dev_queue_xmit+0x14de/0x3230 net/core/dev.c:4239
 neigh_output include/net/neighbour.h:509 [inline]
 ip6_finish_output2+0xee8/0x14f0 net/ipv6/ip6_output.c:126
 dst_output include/net/dst.h:443 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xae0/0x13c0 net/ipv6/ndisc.c:511
 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:schedule_debug kernel/sched/core.c:5600 [inline]
RIP: 0010:__schedule+0x1a70/0x45b0 kernel/sched/core.c:6264
Code: f7 e9 f2 f9 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 59 fa ff ff 48 89 df e8 5c af 8e f7 e9 4c fa ff ff 65 8b 05 10 d9 c7 75 <e9> c7 e7 ff ff e8 06 e6 f7 ff 41 89 c7 83 f8 08 0f 83 ac 2a 00 00
RSP: 0018:ffffc90002dc70c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90002dc0000 RCX: ffff888060221dc0
RDX: 0000000000000010 RSI: ffffffff8a8b3cc0 RDI: ffffffff8ad8f7c0
RBP: ffffc90002dc7290 R08: dffffc0000000000 R09: ffffc90002dc7220
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9b00000
R13: dffffc0000000000 R14: ffff888060221dc0 R15: 0000000000000001
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6777
 irqentry_exit+0x53/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unmap_page_range+0xe6/0x2630 mm/memory.c:1560
Code: 39 fb 0f 83 58 25 00 00 4c 89 b4 24 80 00 00 00 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 aa cb 11 00 <4d> 8b 36 49 83 c6 50 4c 89 f0 48 c1 e8 03 4d 89 e5 42 80 3c 20 00
RSP: 0018:ffffc90002dc7420 EFLAGS: 00000246
RAX: 1ffff1100f3aff10 RBX: 0000000020000000 RCX: ffff888060221dc0
RDX: 0000000000000000 RSI: 0000000021000000 RDI: 0000000020000000
RBP: ffffc90002dc7650 R08: ffffffff81b85e93 R09: fffffbfff1bd2a56
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888079d7f840 R14: ffff888079d7f880 R15: 0000000021000000
 unmap_vmas+0x1f8/0x390 mm/memory.c:1642
 exit_mmap+0x3b6/0x670 mm/mmap.c:3186
 __mmput+0x112/0x3b0 kernel/fork.c:1126
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 get_signal+0xc66/0x14e0 kernel/signal.c:2897
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f718bcd0e79
Code: Unable to access opcode bytes at RIP 0x7f718bcd0e4f.
RSP: 002b:00007f718a12c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f718be6d058 RCX: 00007f718bcd0e79
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000009
RBP: 00007f718bd3e916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f718be6d058 R15: 00007ffcc5da5a58
 </TASK>