rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=7d1c/1/0x4000000000000000 softirq=18294/18304 fqs=1
rcu: 	(detected by 0, t=10502 jiffies, g=16453, q=899 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5769 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
RIP: 0010:do_raw_spin_lock+0x77/0x2f0 kernel/locking/spinlock_debug.c:115
Code: 40 c4 a2 81 4c 8d 64 24 20 49 c1 ec 03 48 b8 f1 f1 f1 f1 f8 f3 f3 f3 49 89 04 14 4c 8d 77 04 4c 89 f0 48 c1 e8 03 0f b6 04 10 <84> c0 0f 85 f3 01 00 00 41 8b 06 3d ad 4e ad de 0f 85 32 01 00 00
RSP: 0018:ffffc90000a08c40 EFLAGS: 00000807
RAX: 0000000000000000 RBX: ffffffff9a6d8c80 RCX: 0000000000010003
RDX: dffffc0000000000 RSI: ffffffff8e25a5b4 RDI: ffffffff9a6d8c80
RBP: ffffc90000a08cf8 R08: ffffffff84c388e7 R09: 0000000000080000
R10: 0000000000000000 R11: ffffffff9a6d8c98 R12: 1ffff9200014118c
R13: dffffc0000000000 R14: ffffffff9a6d8c84 R15: 0000000000000000
FS:  000055555acd8500(0000) GS:ffff888125326000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcda856f52 CR3: 000000007e8cc000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock_irqsave+0x4c/0x60 kernel/locking/spinlock.c:166
 debug_object_activate+0xb7/0x420 lib/debugobjects.c:873
 debug_hrtimer_activate kernel/time/hrtimer.c:485 [inline]
 debug_activate kernel/time/hrtimer.c:528 [inline]
 enqueue_hrtimer+0xa9/0x2c0 kernel/time/hrtimer.c:1109
 __run_hrtimer kernel/time/hrtimer.c:2048 [inline]
 __hrtimer_run_queues+0x4ce/0xa10 kernel/time/hrtimer.c:2096
 hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2215
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:82 [inline]
RIP: 0010:atomic_long_read include/linux/atomic/atomic-instrumented.h:3188 [inline]
RIP: 0010:__mutex_owner kernel/locking/mutex.h:48 [inline]
RIP: 0010:mutex_spin_on_owner+0x23a/0x310 kernel/locking/mutex.c:392
Code: 00 00 e8 99 68 92 00 48 8b 44 24 10 80 3c 28 00 74 08 4c 89 e7 e8 16 66 92 00 49 f7 04 24 01 00 00 00 0f 85 8a 00 00 00 f3 90 <4c> 89 e7 be 08 00 00 00 e8 69 68 92 00 48 8b 44 24 10 80 3c 28 00
RSP: 0018:ffffc9000354f498 EFLAGS: 00000246
RAX: 1ffff11004e4f3e0 RBX: ffff88801f3c1f00 RCX: ffffffff81a19d57
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8fdeaba7 R09: 1ffffffff1fbd574
R10: dffffc0000000000 R11: fffffbfff1fbd575 R12: ffffffff8fdeaba0
R13: ffffffff8fdeac28 R14: ffffffff8fdeabf0 R15: ffffffff8fdeabf0
 mutex_optimistic_spin kernel/locking/mutex.c:509 [inline]
 __mutex_lock_common kernel/locking/mutex.c:650 [inline]
 __mutex_lock+0x2e9/0x1550 kernel/locking/mutex.c:821
 rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 inet_rtm_newaddr+0x464/0x19e0 net/ipv4/devinet.c:978
 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
 __sock_sendmsg net/socket.c:790 [inline]
 __sys_sendto+0x408/0x5a0 net/socket.c:2252
 __do_sys_sendto net/socket.c:2259 [inline]
 __se_sys_sendto net/socket.c:2255 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2255
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f4975d68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffe9e0b3e08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055555acd8500 RCX: 00007f8f4975d68e
RDX: 0000000000000028 RSI: 00007f8f4a544670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffe9e0b3e84 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f8f4a544670 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10496 jiffies! g16453 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=4147
rcu: rcu_preempt kthread starved for 10497 jiffies! g16453 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:27496 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7326
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>