Warning: Permanently added '10.128.0.132' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 174.823430][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 174.830483][ C1] rcu: (detected by 1, t=10502 jiffies, g=8525, q=160 ncpus=2) [ 174.838110][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294954609-4294944107), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 174.851473][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g8525 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 174.862583][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 174.872570][ C1] rcu: RCU grace-period kthread stack dump: [ 174.878458][ C1] task:rcu_preempt state:R running task stack:28520 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 [ 174.892022][ C1] Call Trace: [ 174.895327][ C1] [ 174.898282][ C1] __schedule+0x17d9/0x56c0 [ 174.902824][ C1] ? rcu_is_watching+0x15/0xb0 [ 174.907610][ C1] ? rcu_is_watching+0x15/0xb0 [ 174.912380][ C1] ? __pfx___schedule+0x10/0x10 [ 174.917231][ C1] ? schedule+0x90/0x360 [ 174.921476][ C1] ? rcu_is_watching+0x15/0xb0 [ 174.926235][ C1] ? lock_release+0x4b/0x3c0 [ 174.930830][ C1] schedule+0x164/0x360 [ 174.934988][ C1] schedule_timeout+0x152/0x2c0 [ 174.939834][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 174.945203][ C1] ? __pfx_process_timeout+0x10/0x10 [ 174.950487][ C1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 174.956291][ C1] ? prepare_to_swait_event+0x322/0x350 [ 174.961841][ C1] rcu_gp_fqs_loop+0x30c/0x11f0 [ 174.966698][ C1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 174.972505][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 174.977793][ C1] ? _raw_spin_unlock_irq+0x2e/0x50 [ 174.982990][ C1] ? trace_irq_enable+0x3b/0x140 [ 174.987930][ C1] rcu_gp_kthread+0x9e/0x2b0 [ 174.992526][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 174.997730][ C1] ? __kthread_parkme+0x71/0x1f0 [ 175.002671][ C1] ? __kthread_parkme+0x196/0x1f0 [ 175.007700][ C1] kthread+0x388/0x470 [ 175.011763][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 175.016960][ C1] ? __pfx_kthread+0x10/0x10 [ 175.021544][ C1] ret_from_fork+0x514/0xb70 [ 175.026134][ C1] ? __pfx_ret_from_fork+0x10/0x10 [ 175.031240][ C1] ? __switch_to+0xc89/0x1420 [ 175.035918][ C1] ? __pfx_kthread+0x10/0x10 [ 175.040500][ C1] ret_from_fork_asm+0x1a/0x30 [ 175.045272][ C1] [ 175.048290][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 175.054617][ C1] Sending NMI from CPU 1 to CPUs 0: [ 175.059822][ C0] NMI backtrace for cpu 0 [ 175.059849][ C0] CPU: 0 UID: 0 PID: 5723 Comm: syz-executor239 Not tainted syzkaller #0 PREEMPT(full) [ 175.059867][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 175.059875][ C0] RIP: 0010:do_raw_spin_lock+0x138/0x2f0 [ 175.059898][ C0] Code: df be 04 00 00 00 49 89 d6 e8 74 ea 8e 00 48 8d 7c 24 40 be 04 00 00 00 e8 65 ea 8e 00 8b 44 24 40 b9 01 00 00 00 f0 0f b1 0b <0f> 85 20 01 00 00 43 c6 44 34 04 f8 65 8b 1d 19 dd 97 11 43 0f b6 [ 175.059910][ C0] RSP: 0018:ffffc90003c0e380 EFLAGS: 00000246 [ 175.059924][ C0] RAX: 0000000000000000 RBX: ffffc90003c0e9b8 RCX: 0000000000000001 [ 175.059934][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90003c0e3c0 [ 175.059944][ C0] RBP: ffffc90003c0e430 R08: 0000000000000003 R09: 0000000000000004 [ 175.059960][ C0] R10: dffffc0000000000 R11: fffff52000781c78 R12: 1ffff92000781c74 [ 175.059972][ C0] R13: ffffc90003c0e9c0 R14: dffffc0000000000 R15: 1ffff92000781d38 [ 175.059983][ C0] FS: 00007f215a3c86c0(0000) GS:ffff88812527c000(0000) knlGS:0000000000000000 [ 175.059996][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 175.060007][ C0] CR2: 00007f215a3c7ff8 CR3: 00000000709a6000 CR4: 00000000003526f0 [ 175.060020][ C0] Call Trace: [ 175.060026][ C0] [ 175.060032][ C0] ? lock_acquire+0x5f/0x350 [ 175.060055][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 175.060078][ C0] ? trace_irq_enable+0x3b/0x140 [ 175.060099][ C0] ? tipc_sk_rcv+0x26a/0x2b50 [ 175.060114][ C0] tipc_sk_rcv+0x26a/0x2b50 [ 175.060129][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 175.060151][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.060167][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.060182][ C0] ? lock_release+0x4b/0x3c0 [ 175.060202][ C0] ? lock_release+0x4b/0x3c0 [ 175.060228][ C0] ? __kernel_text_address+0xd/0x30 [ 175.060245][ C0] ? __pfx_tipc_sk_rcv+0x10/0x10 [ 175.060261][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.060276][ C0] ? tipc_loopback_trace+0x48/0x1b0 [ 175.060295][ C0] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 175.060313][ C0] ? stack_depot_save_flags+0x3ec/0x800 [ 175.060337][ C0] ? rcu_read_lock_held+0xa/0x50 [ 175.060355][ C0] ? __raw_spin_lock_init+0x45/0x100 [ 175.060374][ C0] tipc_node_xmit+0x205/0xf10 [ 175.060392][ C0] ? tipc_msg_reverse+0x70a/0x970 [ 175.060411][ C0] ? tipc_sk_rcv+0x2733/0x2b50 [ 175.060424][ C0] ? tipc_node_xmit+0x205/0xf10 [ 175.060443][ C0] ? tipc_sk_proto_rcv+0xaf1/0x1810 [ 175.060458][ C0] ? tipc_sk_filter_rcv+0x2fd7/0x3210 [ 175.060473][ C0] ? tipc_node_xmit+0x205/0xf10 [ 175.060491][ C0] ? tipc_node_distr_xmit+0x2cd/0x400 [ 175.060511][ C0] ? __release_sock+0x28b/0x390 [ 175.060524][ C0] ? release_sock+0x190/0x260 [ 175.060542][ C0] ? __pfx_tipc_node_xmit+0x10/0x10 [ 175.060560][ C0] ? do_syscall_64+0x174/0x580 [ 175.060579][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 175.060604][ C0] tipc_node_distr_xmit+0x2cd/0x400 [ 175.060624][ C0] ? trace_irq_enable+0x3b/0x140 [ 175.060645][ C0] ? __pfx_tipc_node_distr_xmit+0x10/0x10 [ 175.060668][ C0] ? tipc_sk_rcv+0x2501/0x2b50 [ 175.060681][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.060695][ C0] ? trace_irq_enable+0x3b/0x140 [ 175.060716][ C0] tipc_sk_rcv+0x2539/0x2b50 [ 175.060741][ C0] ? __pfx_tipc_sk_rcv+0x10/0x10 [ 175.060758][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.060773][ C0] ? tipc_loopback_trace+0x48/0x1b0 [ 175.060792][ C0] ? rcu_read_lock_held+0xa/0x50 [ 175.060810][ C0] ? __raw_spin_lock_init+0x45/0x100 [ 175.060829][ C0] tipc_node_xmit+0x205/0xf10 [ 175.060851][ C0] ? __pfx_tipc_node_xmit+0x10/0x10 [ 175.060876][ C0] ? net_generic+0x1e/0x240 [ 175.060894][ C0] ? net_generic+0x1e/0x240 [ 175.060907][ C0] ? lock_release+0x4b/0x3c0 [ 175.060929][ C0] tipc_sk_push_backlog+0x4f1/0x950 [ 175.060947][ C0] tipc_sk_proto_rcv+0xaf1/0x1810 [ 175.060968][ C0] ? __pfx_tipc_sk_proto_rcv+0x10/0x10 [ 175.060984][ C0] ? bpf_address_lookup+0x3c0/0x3f0 [ 175.061005][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.061020][ C0] ? tipc_sk_filtering+0x13c/0x510 [ 175.061037][ C0] tipc_sk_filter_rcv+0x2fd7/0x3210 [ 175.061054][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 175.061080][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.061096][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.061110][ C0] ? lock_release+0x4b/0x3c0 [ 175.061131][ C0] ? lock_release+0x4b/0x3c0 [ 175.061153][ C0] ? is_bpf_text_address+0x292/0x2b0 [ 175.061175][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 175.061197][ C0] ? net_generic+0x1e/0x240 [ 175.061209][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.061226][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.061240][ C0] ? lock_release+0x4b/0x3c0 [ 175.061260][ C0] ? net_generic+0x1e/0x240 [ 175.061274][ C0] ? __pfx_tipc_sk_filter_rcv+0x10/0x10 [ 175.061294][ C0] ? tipc_sk_rcv+0x73e/0x2b50 [ 175.061307][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.061322][ C0] ? trace_irq_enable+0x3b/0x140 [ 175.061342][ C0] tipc_sk_rcv+0x877/0x2b50 [ 175.061355][ C0] ? do_syscall_64+0x174/0x580 [ 175.061373][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 175.061400][ C0] ? __pfx_tipc_sk_rcv+0x10/0x10 [ 175.061417][ C0] ? rcu_is_watching+0x15/0xb0 [ 175.061431][ C0] ? tipc_loopback_trace+0x48/0x1b0 [ 175.061450][ C0] ? tipc_msg_reverse+0x70a/0x970 [ 175.061469][ C0] ? rcu_read_lock_held+0xa/0x50 [ 175.061487][ C0] ? __raw_spin_lock_init+0x45/0x100 [ 175.061506][ C0] tipc_node_xmit+0x205/0xf10 [ 175.061528][ C0] ? __pfx_tipc_node_xmit+0x10/0x10 [ 175.061557][ C0] tipc_node_distr_xmit+0x2cd/0x400 [ 175.061580][ C0] ? __pfx_tipc_node_distr_xmit+0x10/0x10 [ 175.061603][ C0] ? page_table_check_set+0x4b3/0x510 [ 175.061625][ C0] tipc_sk_backlog_rcv+0x1ad/0x270 [ 175.061643][ C0] ? __pfx_tipc_sk_backlog_rcv+0x10/0x10 [ 175.061659][ C0] ? lock_release+0x4b/0x3c0 [ 175.061682][ C0] ? __release_sock+0xa9/0x390 [ 175.061696][ C0] ? __release_sock+0xa9/0x390 [ 175.061709][ C0] ? trace_irq_enable+0x3b/0x140 [ 175.061729][ C0] ? __pfx_tipc_sk_backlog_rcv+0x10/0x10 [ 175.061744][ C0] __release_sock+0x28b/0x390 [ 175.061761][ C0] release_sock+0x190/0x260 [ 175.061780][ C0] sk_setsockopt+0x287d/0x2f10 [ 175.061801][ C0] ? __pfx_sk_setsockopt+0x10/0x10 [ 175.061822][ C0] ? aa_sk_perm+0x6d5/0x900 [ 175.061846][ C0] ? __pfx_aa_sk_perm+0x10/0x10 [ 175.061867][ C0] ? lock_release+0x4b/0x3c0 [ 175.061887][ C0] ? _raw_spin_unlock_irq+0x2e/0x50 [ 175.061903][ C0] ? aa_sock_opt_perm+0xff/0x1a0 [ 175.061918][ C0] ? bpf_lsm_socket_setsockopt+0x9/0x20 [ 175.061939][ C0] do_sock_setsockopt+0x11b/0x1b0 [ 175.061962][ C0] __x64_sys_setsockopt+0x13d/0x1b0 [ 175.061983][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 175.061999][ C0] do_syscall_64+0x174/0x580 [ 175.062018][ C0] ? trace_irq_disable+0x3b/0x140 [ 175.062037][ C0] ? clear_bhb_loop+0x40/0x90 [ 175.062054][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 175.062069][ C0] RIP: 0033:0x7f215a411029 [ 175.062099][ C0] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d0 ff ff ff f7 d8 64 89 01 48 [ 175.062111][ C0] RSP: 002b:00007f215a3c81d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 175.062126][ C0] RAX: ffffffffffffffda RBX: 00007f215a3c8cdc RCX: 00007f215a411029 [ 175.062137][ C0] RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 [ 175.062146][ C0] RBP: 00007f215a4c1b58 R08: 0000000000000004 R09: 35203a6b63617473 [ 175.062156][ C0] R10: 00002000000001c0 R11: 0000000000000246 R12: 0000200000000080 [ 175.062166][ C0] R13: 00007f215a4c1b50 R14: 00007f215a4c1b5c R15: 0000200000000004 [ 175.062182][ C0] [ 175.062192][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.367 msecs