rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=5294/1/0x4000000000000000 softirq=8861/8861 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=10841, q=2217 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: kworker/1:1 Not tainted 6.7.0-rc5-syzkaller-01058-ge91db1614aba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:__lock_acquire+0xd8a/0x3b20 kernel/locking/lockdep.c:5141
Code: 00 00 8b 35 d0 59 b1 0d 85 f6 0f 84 aa 01 00 00 49 8d 5c 24 22 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 04 02 <48> 89 da 83 e2 07 38 d0 7f 0c 84 c0 74 08 48 89 df e8 10 9a 76 00
RSP: 0018:ffffc900001f0b50 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff88801aa72942 RCX: 000000000df146a0
RDX: 1ffff1100354e528 RSI: 0000000000000001 RDI: ffffffff91f19ce0
RBP: ffffffff91f4fc50 R08: 0000000000000000 R09: fffffbfff23e2fd0
R10: ffffffff91f17e87 R11: 0000000000000004 R12: ffff88801aa72920
R13: ffff88801aa72919 R14: 0000000000000020 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc4ab77ff8 CR3: 000000001fd94000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
 rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 rcu_read_lock include/linux/rcupdate.h:747 [inline]
 advance_sched+0x67f/0xc60 net/sched/sch_taprio.c:996
 __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:unwind_next_frame+0x6d3/0x2390 arch/x86/kernel/unwind_orc.c:515
Code: 8a 41 89 fd 83 e7 0f e8 cb 94 4d 00 41 83 e5 0f 41 80 fd 06 0f 84 f1 10 00 00 0f 87 f7 02 00 00 41 80 fd 04 0f 84 56 10 00 00 <41> 80 fd 05 0f 85 12 01 00 00 e8 ee 98 4d 00 48 8b 54 24 10 48 b8
RSP: 0018:ffffc90000a2f150 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffc90000a2f1d0 RCX: ffffffff8139fcf5
RDX: ffff88801aa71dc0 RSI: 0000000000000009 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000009
R10: 0000000000000005 R11: 0000000000000005 R12: ffffffff903640be
R13: 0000000000000005 R14: ffffffff903640c2 R15: ffffc90000a2f205
 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:198 [inline]
 __do_kmalloc_node mm/slab_common.c:1007 [inline]
 __kmalloc_node_track_caller+0x5a/0x90 mm/slab_common.c:1027
 kmalloc_reserve+0xef/0x260 net/core/skbuff.c:582
 __alloc_skb+0x12b/0x330 net/core/skbuff.c:651
 alloc_skb include/linux/skbuff.h:1298 [inline]
 alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6332
 sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2776
 sock_alloc_send_skb include/net/sock.h:1884 [inline]
 mld_newpack.isra.0+0x1ed/0x790 net/ipv6/mcast.c:1746
 add_grhead+0x295/0x340 net/ipv6/mcast.c:1849
 add_grec+0x111a/0x1670 net/ipv6/mcast.c:1987
 mld_send_initial_cr.part.0+0xe2/0x260 net/ipv6/mcast.c:2233
 mld_send_initial_cr include/linux/refcount.h:201 [inline]
 ipv6_mc_dad_complete+0x255/0x2b0 net/ipv6/mcast.c:2244
 addrconf_dad_completed+0xd0e/0x1030 net/ipv6/addrconf.c:4283
 addrconf_dad_work+0x7f6/0x14b0 net/ipv6/addrconf.c:4211
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2627
 process_scheduled_works kernel/workqueue.c:2700 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
 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: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g10841 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=3443
rcu: rcu_preempt kthread starved for 10502 jiffies! g10841 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27904 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6778
 schedule_timeout+0x137/0x290 kernel/time/timer.c:2167
 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>