rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=ffd/1/0x4000000000000000 softirq=9892/9892 fqs=0 
	(t=10501 jiffies g=11785 q=944)
rcu: rcu_preempt kthread starved for 10502 jiffies! g11785 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:26816 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 0
CPU: 0 PID: 4497 Comm: syz.3.187 Not tainted 5.15.167-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:1688 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 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:stack_trace_consume_entry+0x12b/0x270 kernel/stacktrace.c:95
Code: 2a 5c 00 4d 89 f9 4c 89 ee 4c 89 f2 48 89 33 41 8b 19 41 0f b6 04 14 84 c0 0f 85 30 01 00 00 3b 5d 00 0f 92 c0 48 83 c4 18 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 44 89 c9 80 e1 07 80 c1 03 38 c1 0f
RSP: 0018:ffffc90000007570 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffffc900000075a0 RCX: 0000000000000100
RDX: dffffc0000000000 RSI: ffffffff81c9fee8 RDI: ffffc9000000768c
RBP: ffffc90000007688 R08: 0000000000000014 R09: ffffc90000007690
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000ed1
R13: 1ffff92000000ed1 R14: 0000000000000015 R15: 1ffff92000000ed2
 arch_stack_walk+0x101/0x140 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963
 kmalloc_reserve net/core/skbuff.c:356 [inline]
 __alloc_skb+0x12c/0x590 net/core/skbuff.c:427
 alloc_skb include/linux/skbuff.h:1167 [inline]
 ndisc_alloc_skb+0xee/0x2c0 net/ipv6/ndisc.c:423
 ndisc_send_rs+0x269/0x6a0 net/ipv6/ndisc.c:689
 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:unwind_next_frame+0x4b/0x1fa0 arch/x86/kernel/unwind_orc.c:424
Code: 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 9c 91 00 48 b8 00 00 00 00 00 fc ff df 48 89 5c 24 08 <4d> 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89 4c 24 48 80 3c
RSP: 0018:ffffc90003b96fe8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90003b97148 RCX: 1ffff92000772e29
RDX: dffffc0000000000 RSI: ffffc90003b98000 RDI: ffffc90003b97100
RBP: 1ffff92000772e21 R08: dffffc0000000001 R09: ffffc90003b97100
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000772e22
R13: ffffc90003b97110 R14: ffffc90003b97100 R15: ffffc90003b97100
 __unwind_start+0x59d/0x720 arch/x86/kernel/unwind_orc.c:704
 unwind_start arch/x86/include/asm/unwind.h:60 [inline]
 arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0xf1/0x270 mm/slub.c:4559
 skb_free_head net/core/skbuff.c:655 [inline]
 skb_release_data+0x73a/0x8a0 net/core/skbuff.c:677
 skb_release_all net/core/skbuff.c:742 [inline]
 __kfree_skb net/core/skbuff.c:756 [inline]
 kfree_skb_reason+0xb3/0x170 net/core/skbuff.c:776
 tipc_sk_proto_rcv+0x84d/0x1820
 tipc_sk_filter_rcv+0x315b/0x33d0 net/tipc/socket.c:2352
 tipc_sk_backlog_rcv+0x12e/0x220 net/tipc/socket.c:2407
 sk_backlog_rcv include/net/sock.h:1059 [inline]
 __release_sock+0x198/0x4b0 net/core/sock.c:2724
 release_sock+0x5d/0x1c0 net/core/sock.c:3265
 tipc_setsockopt+0x7a1/0xb80 net/tipc/socket.c:3214
 __sys_setsockopt+0x57e/0x990 net/socket.c:2198
 __do_sys_setsockopt net/socket.c:2209 [inline]
 __se_sys_setsockopt net/socket.c:2206 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2206
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f22e82e0f39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f22e6759038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f22e8498f80 RCX: 00007f22e82e0f39
RDX: 0000000000000087 RSI: 000000000000010f RDI: 000000000000000a
RBP: 00007f22e8353216 R08: 0000000000000043 R09: 0000000000000000
R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f22e8498f80 R15: 00007ffea2a396e8
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 4497 Comm: syz.3.187 Not tainted 5.15.167-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:1688 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 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:stack_trace_consume_entry+0x12b/0x270 kernel/stacktrace.c:95
Code: 2a 5c 00 4d 89 f9 4c 89 ee 4c 89 f2 48 89 33 41 8b 19 41 0f b6 04 14 84 c0 0f 85 30 01 00 00 3b 5d 00 0f 92 c0 48 83 c4 18 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 44 89 c9 80 e1 07 80 c1 03 38 c1 0f
RSP: 0018:ffffc90000007570 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffffc900000075a0 RCX: 0000000000000100
RDX: dffffc0000000000 RSI: ffffffff81c9fee8 RDI: ffffc9000000768c
RBP: ffffc90000007688 R08: 0000000000000014 R09: ffffc90000007690
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000ed1
R13: 1ffff92000000ed1 R14: 0000000000000015 R15: 1ffff92000000ed2
 arch_stack_walk+0x101/0x140 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963
 kmalloc_reserve net/core/skbuff.c:356 [inline]
 __alloc_skb+0x12c/0x590 net/core/skbuff.c:427
 alloc_skb include/linux/skbuff.h:1167 [inline]
 ndisc_alloc_skb+0xee/0x2c0 net/ipv6/ndisc.c:423
 ndisc_send_rs+0x269/0x6a0 net/ipv6/ndisc.c:689
 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:unwind_next_frame+0x4b/0x1fa0 arch/x86/kernel/unwind_orc.c:424
Code: 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 9c 91 00 48 b8 00 00 00 00 00 fc ff df 48 89 5c 24 08 <4d> 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89 4c 24 48 80 3c
RSP: 0018:ffffc90003b96fe8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90003b97148 RCX: 1ffff92000772e29
RDX: dffffc0000000000 RSI: ffffc90003b98000 RDI: ffffc90003b97100
RBP: 1ffff92000772e21 R08: dffffc0000000001 R09: ffffc90003b97100
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000772e22
R13: ffffc90003b97110 R14: ffffc90003b97100 R15: ffffc90003b97100
 __unwind_start+0x59d/0x720 arch/x86/kernel/unwind_orc.c:704
 unwind_start arch/x86/include/asm/unwind.h:60 [inline]
 arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0xf1/0x270 mm/slub.c:4559
 skb_free_head net/core/skbuff.c:655 [inline]
 skb_release_data+0x73a/0x8a0 net/core/skbuff.c:677
 skb_release_all net/core/skbuff.c:742 [inline]
 __kfree_skb net/core/skbuff.c:756 [inline]
 kfree_skb_reason+0xb3/0x170 net/core/skbuff.c:776
 tipc_sk_proto_rcv+0x84d/0x1820
 tipc_sk_filter_rcv+0x315b/0x33d0 net/tipc/socket.c:2352
 tipc_sk_backlog_rcv+0x12e/0x220 net/tipc/socket.c:2407
 sk_backlog_rcv include/net/sock.h:1059 [inline]
 __release_sock+0x198/0x4b0 net/core/sock.c:2724
 release_sock+0x5d/0x1c0 net/core/sock.c:3265
 tipc_setsockopt+0x7a1/0xb80 net/tipc/socket.c:3214
 __sys_setsockopt+0x57e/0x990 net/socket.c:2198
 __do_sys_setsockopt net/socket.c:2209 [inline]
 __se_sys_setsockopt net/socket.c:2206 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2206
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f22e82e0f39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f22e6759038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f22e8498f80 RCX: 00007f22e82e0f39
RDX: 0000000000000087 RSI: 000000000000010f RDI: 000000000000000a
RBP: 00007f22e8353216 R08: 0000000000000043 R09: 0000000000000000
R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f22e8498f80 R15: 00007ffea2a396e8
 </TASK>