TCP: request_sock_TCP: Possible SYN flooding on port 2. Sending cookies.  Check SNMP counters.
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=59197, q=554 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295000638-4294990136), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g59197 f0x2 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:27224 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:check_region_inline mm/kasan/generic.c:172 [inline]
RIP: 0010:kasan_check_range+0x11/0x290 mm/kasan/generic.c:189
Code: ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 41 57 41 56 53 b0 01 48 85 f6 0f 84 9a 01 00 00 <48> 89 fd 48 01 f5 0f 82 5a 02 00 00 48 89 fd 48 c1 ed 2f 81 fd ff
RSP: 0018:ffffc90000157b70 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff11027fdeb28 RCX: ffffffff8a938926
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88813fef5940
RBP: ffffc90000157cb0 R08: dffffc0000000000 R09: ffffed1017307541
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88813fef5940
R13: 1ffff9200002af78 R14: ffff88813fef6bb8 R15: dffffc0000000000
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 test_ti_thread_flag include/linux/thread_info.h:118 [inline]
 need_resched include/linux/sched.h:2231 [inline]
 schedule+0xd6/0x180 kernel/sched/core.c:6636
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11043 Comm: syz-executor.3 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:lockdep_softirqs_off+0x1f8/0x420 kernel/locking/lockdep.c:4493
Code: 0f 85 b3 01 00 00 41 89 1f 48 c7 c0 60 41 c9 91 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 b6 01 00 00 83 3d aa 09 5f 10 00 75 0e <65> 8b 05 89 37 98 7e a9 00 ff 00 00 74 76 48 c7 44 24 20 0e 36 e0
RSP: 0018:ffffc9000327f7e0 EFLAGS: 00000046
RAX: 0000000000000004 RBX: 00000000036f808e RCX: ffffffff91c94103
RDX: ffffc90004b99000 RSI: 0000000000000200 RDI: ffffffff8132d4ff
RBP: ffffc9000327f890 R08: ffffffff8132d486 R09: fffffbfff1ce712e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888017f2e3b8
R13: dffffc0000000000 R14: 1ffff9200064ff00 R15: ffff888017f2e3e8
FS:  00007f3f1f17e6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005d764000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __local_bh_disable_ip+0xf7/0x210 kernel/softirq.c:336
 local_bh_disable include/linux/bottom_half.h:20 [inline]
 fpregs_lock arch/x86/include/asm/fpu/api.h:72 [inline]
 copy_fpstate_to_sigframe+0x29a/0xda0 arch/x86/kernel/fpu/signal.c:226
 get_sigframe+0x378/0x4b0 arch/x86/kernel/signal.c:297
 __setup_rt_frame arch/x86/kernel/signal.c:472 [inline]
 setup_rt_frame arch/x86/kernel/signal.c:784 [inline]
 handle_signal arch/x86/kernel/signal.c:828 [inline]
 arch_do_signal_or_restart+0x4ef/0x1a10 arch/x86/kernel/signal.c:873
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3f1e47cf67
Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89
RSP: 002b:00007f3f1f17e178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f3f1e5b4128 RCX: 00007f3f1e47cf69
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3f1e5b4128
RBP: 00007f3f1e5b4120 R08: 00007f3f1f17e6c0 R09: 00007f3f1f17e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3f1e5b412c
R13: 000000000000006e R14: 00007ffd0cfa20f0 R15: 00007ffd0cfa21d8
 </TASK>