rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (2 ticks this GP) idle=cbc4/1/0x4000000000000000 softirq=17575/17575 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=11869, q=357 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5985 Comm: syz-executor Not tainted 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:find_held_lock kernel/locking/lockdep.c:5350 [inline]
RIP: 0010:__lock_release kernel/locking/lockdep.c:5538 [inline]
RIP: 0010:lock_release+0xf1/0x3e0 kernel/locking/lockdep.c:5892
Code: 01 00 00 00 83 3d ee c3 03 0e 00 0f 84 96 01 00 00 41 8b 87 e8 0a 00 00 85 c0 0f 84 1d 01 00 00 4c 89 6c 24 18 48 89 5c 24 08 <44> 8d 60 ff 49 8d af f0 0a 00 00 4d 63 ec 48 89 04 24 83 f8 32 0f
RSP: 0018:ffffc90000a08c38 EFLAGS: 00000006
RAX: 0000000000000003 RBX: 0000000000000087 RCX: ee8461ee6cdf9d00
RDX: 0000000000010000 RSI: ffffffff8d9aa3bd RDI: ffffffff8be28d40
RBP: ffffc90000a08d30 R08: ffffffff8fa1def7 R09: 1ffffffff1f43bde
R10: dffffc0000000000 R11: fffffbfff1f43bdf R12: dffffc0000000000
R13: ffffffff81ae7768 R14: ffff8880b8727ad8 R15: ffff88802f5f5a00
FS:  0000555578781500(0000) GS:ffff888125d23000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000600 CR3: 000000003385e000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x70/0x110 kernel/locking/spinlock.c:194
 __run_hrtimer kernel/time/hrtimer.c:1757 [inline]
 __hrtimer_run_queues+0x408/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rtnl_link_get_af_size net/core/rtnetlink.c:822 [inline]
RIP: 0010:if_nlmsg_size+0x6f2/0x840 net/core/rtnetlink.c:1308
Code: 5c a6 16 48 01 c5 48 83 c5 08 eb 05 e8 77 7e 64 f8 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 61 90 c6 f8 48 8b 1b <48> 81 fb 40 c1 51 8f 74 07 e8 50 7e 64 f8 eb 91 e8 49 7e 64 f8 eb
RSP: 0018:ffffc90003b56c58 EFLAGS: 00000246
RAX: 1ffffffff1f478c9 RBX: ffffffff8fa3f988 RCX: ffff88802f5f5a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000350 R08: 0000000000000000 R09: ffffffff8a47c455
R10: dffffc0000000000 R11: ffffffff8a47c3d0 R12: ffffffff8a47c3d0
R13: 0000000000000000 R14: ffff88802a5a6000 R15: dffffc0000000000
 rtmsg_ifinfo_build_skb+0x70/0x260 net/core/rtnetlink.c:4390
 rtmsg_ifinfo_event net/core/rtnetlink.c:4432 [inline]
 rtmsg_ifinfo+0x8c/0x1a0 net/core/rtnetlink.c:4441
 __dev_notify_flags+0xf4/0x2e0 net/core/dev.c:9493
 netif_change_flags+0xe8/0x1a0 net/core/dev.c:9526
 do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3141
 rtnl_changelink net/core/rtnetlink.c:3759 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3918 [inline]
 rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4055
 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944
 netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2552
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x759/0x8e0 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:727
 __sys_sendto+0x3bd/0x520 net/socket.c:2180
 __do_sys_sendto net/socket.c:2187 [inline]
 __se_sys_sendto net/socket.c:2183 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2183
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa8a719083c
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007fff0b078db0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fa8a7ee4620 RCX: 00007fa8a719083c
RDX: 000000000000002c RSI: 00007fa8a7ee4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff0b078e04 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fa8a7ee4670 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g11869 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=9411
rcu: rcu_preempt kthread starved for 10502 jiffies! g11869 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:27320 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x16fd/0x4cf0 kernel/sched/core.c:6786
 __schedule_loop kernel/sched/core.c:6864 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6879
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>