rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=a9dc/1/0x4000000000000000 softirq=9798/9798 fqs=0
rcu: 	(t=10500 jiffies g=8853 q=206 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g8853 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=2605
rcu: rcu_preempt kthread starved for 10500 jiffies! g8853 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
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:28264 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 5662 Comm: syz-executor175 Not tainted 6.4.0-rc5-syzkaller-00002-gf8dba31b0a82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__list_del include/linux/list.h:115 [inline]
RIP: 0010:__list_del_entry include/linux/list.h:137 [inline]
RIP: 0010:__list_del_entry include/linux/list.h:132 [inline]
RIP: 0010:list_move_tail include/linux/list.h:229 [inline]
RIP: 0010:fq_pie_qdisc_dequeue+0x6be/0x9c0 net/sched/sch_fq_pie.c:248
Code: f8 48 c1 e8 03 42 80 3c 20 00 0f 85 c5 02 00 00 49 8d 7f 08 4c 8b 6b 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 a1 02 00 00 <4c> 89 e8 4d 89 6f 08 48 c1 e8 03 42 80 3c 20 00 0f 85 b9 02 00 00
RSP: 0018:ffffc90000007620 EFLAGS: 00000246
RAX: 1ffff1100ef8d85d RBX: ffff88802c283230 RCX: 0000000000000100
RDX: ffff888020848000 RSI: ffffffff883f1c09 RDI: ffff888077c6c2e8
RBP: ffff888077c6c000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffffffff21a6152 R12: dffffc0000000000
R13: ffff888077c6c2e0 R14: ffff888077c6c2f0 R15: ffff888077c6c2e0
FS:  0000555556aca300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f06cce9f370 CR3: 00000000787d1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1b2/0x1780 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3868 [inline]
 __dev_queue_xmit+0x2215/0x3b10 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_connected_output+0x3c2/0x550 net/core/neighbour.c:1581
 neigh_output include/net/neighbour.h:544 [inline]
 ip6_finish_output2+0x55a/0x1560 net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x69a/0x1170 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1f1/0x540 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0xa63/0x1850 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x132/0x6f0 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x3f1/0x870 net/ipv6/addrconf.c:3936
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:write_comp_data+0x15/0x90 kernel/kcov.c:230
Code: bb 03 00 48 8b 80 00 16 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 b1 7a 7f 7e 49 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 <49> 89 f8 65 48 8b 14 25 c0 bb 03 00 a9 00 01 ff 00 74 0e 85 f6 74
RSP: 0018:ffffc9000572fbb0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff89ff7fc3
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffffff8b8bdf00 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000005 R14: 0000000000000003 R15: ffffc9000572fd60
 __sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:340
 ma_pivots lib/maple_tree.c:640 [inline]
 mas_next_nentry lib/maple_tree.c:4709 [inline]
 mas_next_entry+0x283/0x1c50 lib/maple_tree.c:4809
 mas_find+0x7d/0x200 lib/maple_tree.c:6084
 vma_next include/linux/mm.h:866 [inline]
 acct_collect+0x1e4/0x860 kernel/acct.c:565
 do_exit+0x7a8/0x29b0 kernel/exit.c:853
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 __do_sys_exit_group kernel/exit.c:1035 [inline]
 __se_sys_exit_group kernel/exit.c:1033 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f06cce21839
Code: 00 49 c7 c0 c0 ff ff ff be e7 00 00 00 ba 3c 00 00 00 eb 12 0f 1f 44 00 00 89 d0 0f 05 48 3d 00 f0 ff ff 77 1c f4 89 f0 0f 05 <48> 3d 00 f0 ff ff 76 e7 f7 d8 64 41 89 00 eb df 0f 1f 80 00 00 00
RSP: 002b:00007ffe19dc8548 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f06cce9c410 RCX: 00007f06cce21839
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 000000000000000d
R10: 000000000000000d R11: 0000000000000246 R12: 00007f06cce9c410
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>
CPU: 0 PID: 5662 Comm: syz-executor175 Not tainted 6.4.0-rc5-syzkaller-00002-gf8dba31b0a82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__list_del include/linux/list.h:115 [inline]
RIP: 0010:__list_del_entry include/linux/list.h:137 [inline]
RIP: 0010:__list_del_entry include/linux/list.h:132 [inline]
RIP: 0010:list_move_tail include/linux/list.h:229 [inline]
RIP: 0010:fq_pie_qdisc_dequeue+0x6be/0x9c0 net/sched/sch_fq_pie.c:248
Code: f8 48 c1 e8 03 42 80 3c 20 00 0f 85 c5 02 00 00 49 8d 7f 08 4c 8b 6b 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 a1 02 00 00 <4c> 89 e8 4d 89 6f 08 48 c1 e8 03 42 80 3c 20 00 0f 85 b9 02 00 00
RSP: 0018:ffffc90000007620 EFLAGS: 00000246
RAX: 1ffff1100ef8d85d RBX: ffff88802c283230 RCX: 0000000000000100
RDX: ffff888020848000 RSI: ffffffff883f1c09 RDI: ffff888077c6c2e8
RBP: ffff888077c6c000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffffffff21a6152 R12: dffffc0000000000
R13: ffff888077c6c2e0 R14: ffff888077c6c2f0 R15: ffff888077c6c2e0
FS:  0000555556aca300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f06cce9f370 CR3: 00000000787d1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1b2/0x1780 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3868 [inline]
 __dev_queue_xmit+0x2215/0x3b10 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_connected_output+0x3c2/0x550 net/core/neighbour.c:1581
 neigh_output include/net/neighbour.h:544 [inline]
 ip6_finish_output2+0x55a/0x1560 net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x69a/0x1170 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1f1/0x540 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0xa63/0x1850 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x132/0x6f0 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x3f1/0x870 net/ipv6/addrconf.c:3936
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:write_comp_data+0x15/0x90 kernel/kcov.c:230
Code: bb 03 00 48 8b 80 00 16 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 b1 7a 7f 7e 49 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 <49> 89 f8 65 48 8b 14 25 c0 bb 03 00 a9 00 01 ff 00 74 0e 85 f6 74
RSP: 0018:ffffc9000572fbb0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff89ff7fc3
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffffff8b8bdf00 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000005 R14: 0000000000000003 R15: ffffc9000572fd60
 __sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:340
 ma_pivots lib/maple_tree.c:640 [inline]
 mas_next_nentry lib/maple_tree.c:4709 [inline]
 mas_next_entry+0x283/0x1c50 lib/maple_tree.c:4809
 mas_find+0x7d/0x200 lib/maple_tree.c:6084
 vma_next include/linux/mm.h:866 [inline]
 acct_collect+0x1e4/0x860 kernel/acct.c:565
 do_exit+0x7a8/0x29b0 kernel/exit.c:853
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 __do_sys_exit_group kernel/exit.c:1035 [inline]
 __se_sys_exit_group kernel/exit.c:1033 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f06cce21839
Code: 00 49 c7 c0 c0 ff ff ff be e7 00 00 00 ba 3c 00 00 00 eb 12 0f 1f 44 00 00 89 d0 0f 05 48 3d 00 f0 ff ff 77 1c f4 89 f0 0f 05 <48> 3d 00 f0 ff ff 76 e7 f7 d8 64 41 89 00 eb df 0f 1f 80 00 00 00
RSP: 002b:00007ffe19dc8548 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f06cce9c410 RCX: 00007f06cce21839
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 000000000000000d
R10: 000000000000000d R11: 0000000000000246 R12: 00007f06cce9c410
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 5662 Comm: syz-executor175 Not tainted 6.4.0-rc5-syzkaller-00002-gf8dba31b0a82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__list_add_valid+0x10/0x100 lib/list_debug.c:25
Code: ff 48 89 ef e8 71 b8 bf fd e9 85 fb ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 54 55 48 83 ec 08 48 85 f6 74 6a <48> 85 d2 49 89 d4 74 70 48 b8 00 00 00 00 00 fc ff df 48 89 fd 48
RSP: 0018:ffffc90000007600 EFLAGS: 00000282
RAX: 1ffff1100ef8d85d RBX: ffff88802c283230 RCX: 0000000000000100
RDX: ffff888077c6c2e0 RSI: ffff888077c6c2e0 RDI: ffff88802c283230
RBP: ffff888077c6c000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffffffff21a6152 R12: dffffc0000000000
R13: ffff888077c6c2e0 R14: ffff888077c6c2f0 R15: ffff888077c6c2e0
FS:  0000555556aca300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f06cce9f370 CR3: 00000000787d1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __list_add include/linux/list.h:69 [inline]
 list_add_tail include/linux/list.h:102 [inline]
 list_move_tail include/linux/list.h:230 [inline]
 fq_pie_qdisc_dequeue+0x70e/0x9c0 net/sched/sch_fq_pie.c:248
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1b2/0x1780 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3868 [inline]
 __dev_queue_xmit+0x2215/0x3b10 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_connected_output+0x3c2/0x550 net/core/neighbour.c:1581
 neigh_output include/net/neighbour.h:544 [inline]
 ip6_finish_output2+0x55a/0x1560 net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x69a/0x1170 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1f1/0x540 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0xa63/0x1850 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x132/0x6f0 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x3f1/0x870 net/ipv6/addrconf.c:3936
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:write_comp_data+0x15/0x90 kernel/kcov.c:230
Code: bb 03 00 48 8b 80 00 16 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 b1 7a 7f 7e 49 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 <49> 89 f8 65 48 8b 14 25 c0 bb 03 00 a9 00 01 ff 00 74 0e 85 f6 74
RSP: 0018:ffffc9000572fbb0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff89ff7fc3
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffffff8b8bdf00 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000005 R14: 0000000000000003 R15: ffffc9000572fd60
 __sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:340
 ma_pivots lib/maple_tree.c:640 [inline]
 mas_next_nentry lib/maple_tree.c:4709 [inline]
 mas_next_entry+0x283/0x1c50 lib/maple_tree.c:4809
 mas_find+0x7d/0x200 lib/maple_tree.c:6084
 vma_next include/linux/mm.h:866 [inline]
 acct_collect+0x1e4/0x860 kernel/acct.c:565
 do_exit+0x7a8/0x29b0 kernel/exit.c:853
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 __do_sys_exit_group kernel/exit.c:1035 [inline]
 __se_sys_exit_group kernel/exit.c:1033 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f06cce21839
Code: 00 49 c7 c0 c0 ff ff ff be e7 00 00 00 ba 3c 00 00 00 eb 12 0f 1f 44 00 00 89 d0 0f 05 48 3d 00 f0 ff ff 77 1c f4 89 f0 0f 05 <48> 3d 00 f0 ff ff 76 e7 f7 d8 64 41 89 00 eb df 0f 1f 80 00 00 00
RSP: 002b:00007ffe19dc8548 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f06cce9c410 RCX: 00007f06cce21839
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 000000000000000d
R10: 000000000000000d R11: 0000000000000246 R12: 00007f06cce9c410
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.287 msecs