IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...!: (2 ticks this GP) idle=0914/1/0x4000000000000000 softirq=52929/52929 fqs=3 rcu: (detected by 1, t=10503 jiffies, g=48733, q=743 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 12590 Comm: syz-executor Not tainted 6.14.0-rc6-syzkaller-00103-g4003c9e78778 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:_raw_spin_lock_irqsave+0x101/0x120 kernel/locking/spinlock.c:162 Code: c4 08 4c 89 f7 e8 8f ba 92 f5 48 c7 04 24 0e 36 e0 45 4b c7 04 2f 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 75 16 <4c> 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc RSP: 0018:ffffc90000007b40 EFLAGS: 00000046 RAX: 763a441a0addfa00 RBX: 1ffff92000000f6c RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000007ac0 RBP: ffffc90000007bd0 R08: 0000000000000003 R09: fffff52000000f58 R10: dffffc0000000000 R11: fffff52000000f58 R12: 0000000000000046 R13: 1ffff92000000f68 R14: ffffffff9a91ddb8 R15: dffffc0000000000 FS: 000055556b768500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2b9a0b CR3: 000000005e33a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_activate+0x17f/0x580 lib/debugobjects.c:818 debug_hrtimer_activate kernel/time/hrtimer.c:455 [inline] debug_activate kernel/time/hrtimer.c:496 [inline] enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1100 __run_hrtimer kernel/time/hrtimer.c:1818 [inline] __hrtimer_run_queues+0x6cb/0xd30 kernel/time/hrtimer.c:1865 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0x996/0xeb0 Code: 48 21 c3 0f 85 16 02 00 00 e8 d6 ed 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 c7 ed 20 00 eb 06 e8 c0 ed 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 66 33 88 00 4c 8b RSP: 0018:ffffc9000318f160 EFLAGS: 00000293 RAX: ffffffff81a0f150 RBX: ffffffff8f38cbf8 RCX: ffff88802eb63c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000318f310 R08: ffffffff81a0f127 R09: 1ffffffff28a9908 R10: dffffc0000000000 R11: fffffbfff28a9909 R12: ffffffff8f38cba0 R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc9000318f360 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432 _printk+0xd5/0x120 kernel/printk/printk.c:2457 ib_get_eth_speed+0x451/0x800 drivers/infiniband/core/verbs.c:2006 siw_query_port+0x3c/0x480 drivers/infiniband/sw/siw/siw_verbs.c:179 ib_setup_port_attrs+0x299/0x2440 drivers/infiniband/core/sysfs.c:1440 add_one_compat_dev+0x51a/0x710 drivers/infiniband/core/device.c:959 rdma_dev_init_net+0x1f1/0x280 drivers/infiniband/core/device.c:1175 ops_init+0x349/0x5b0 net/core/net_namespace.c:138 setup_net+0x287/0x9e0 net/core/net_namespace.c:362 copy_net_ns+0x33f/0x570 net/core/net_namespace.c:516 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x57d/0xa70 kernel/fork.c:3342 __do_sys_unshare kernel/fork.c:3413 [inline] __se_sys_unshare kernel/fork.c:3411 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3411 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fef56b8e967 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0d193c18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007fef56da5f40 RCX: 00007fef56b8e967 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00007fef56da6738 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000008 R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 8455 jiffies! g48733 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:25400 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 rcu: Stack dump where RCU GP kthread last ran: CPU: 1 UID: 0 PID: 248 Comm: kworker/u8:5 Not tainted 6.14.0-rc6-syzkaller-00103-g4003c9e78778 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x1ba4/0x2d30 kernel/smp.c:885 Code: 03 84 c0 75 7e 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 c0 f4 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 70 f0 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00 RSP: 0018:ffffc9000302f640 EFLAGS: 00000293 RAX: ffffffff81b5eec5 RBX: 1ffff110170c8c99 RCX: ffff88802170bc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000302f840 R08: ffffffff81b5ee90 R09: 1ffffffff28a9908 R10: dffffc0000000000 R11: fffffbfff28a9909 R12: ffff8880b873fb48 R13: ffff8880b86464c8 R14: ffff8880b873fb40 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff1b4b78ab8 CR3: 000000000e938000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2118 [inline] text_poke_bp_batch+0x726/0xb30 arch/x86/kernel/alternative.c:2390 text_poke_flush arch/x86/kernel/alternative.c:2519 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2526 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xbc/0x260 mm/kfence/core.c:850 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd30 kernel/workqueue.c:3400 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available watchdog: BUG: soft lockup - CPU#1 stuck for 216s! [kworker/u8:5:248] Modules linked in: irq event stamp: 6652596 hardirqs last enabled at (6652595): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (6652596): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (6652590): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last enabled at (6652590): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last enabled at (6652590): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 softirqs last disabled at (6652545): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last disabled at (6652545): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last disabled at (6652545): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 CPU: 1 UID: 0 PID: 248 Comm: kworker/u8:5 Not tainted 6.14.0-rc6-syzkaller-00103-g4003c9e78778 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x1ba4/0x2d30 kernel/smp.c:885 Code: 03 84 c0 75 7e 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 c0 f4 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 70 f0 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00 RSP: 0018:ffffc9000302f640 EFLAGS: 00000293 RAX: ffffffff81b5eec5 RBX: 1ffff110170c8c99 RCX: ffff88802170bc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000302f840 R08: ffffffff81b5ee90 R09: 1ffffffff28a9908 R10: dffffc0000000000 R11: fffffbfff28a9909 R12: ffff8880b873fb48 R13: ffff8880b86464c8 R14: ffff8880b873fb40 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff1b4b78ab8 CR3: 000000000e938000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2118 [inline] text_poke_bp_batch+0x726/0xb30 arch/x86/kernel/alternative.c:2390 text_poke_flush arch/x86/kernel/alternative.c:2519 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2526 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xbc/0x260 mm/kfence/core.c:850 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd30 kernel/workqueue.c:3400 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 12590 Comm: syz-executor Not tainted 6.14.0-rc6-syzkaller-00103-g4003c9e78778 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:check_preemption_disabled+0x19/0x120 lib/smp_processor_id.c:14 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 1d 0c fb fa 73 65 8b 05 01 fb fa 73 a9 ff ff ff 7f 74 26 65 RSP: 0018:ffffc90000007b08 EFLAGS: 00000082 RAX: 763a441a0addfa00 RBX: ffffc90000007ba0 RCX: ffffffff819cd2d4 RDX: 0000000000000000 RSI: ffffffff8c2ac140 RDI: ffffffff8c810120 RBP: ffffc90000007c88 R08: ffffffff903cfa77 R09: 1ffffffff2079f4e R10: dffffc0000000000 R11: fffffbfff2079f4f R12: 1ffff92000000f70 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000046 FS: 000055556b768500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2b9a0b CR3: 000000005e33a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_recursion_inc kernel/locking/lockdep.c:464 [inline] lock_acquire+0x1b0/0x550 kernel/locking/lockdep.c:5850 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170 __run_hrtimer kernel/time/hrtimer.c:1805 [inline] __hrtimer_run_queues+0x670/0xd30 kernel/time/hrtimer.c:1865 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0x996/0xeb0 Code: 48 21 c3 0f 85 16 02 00 00 e8 d6 ed 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 c7 ed 20 00 eb 06 e8 c0 ed 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 66 33 88 00 4c 8b RSP: 0018:ffffc9000318f160 EFLAGS: 00000293 RAX: ffffffff81a0f150 RBX: ffffffff8f38cbf8 RCX: ffff88802eb63c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000318f310 R08: ffffffff81a0f127 R09: 1ffffffff28a9908 R10: dffffc0000000000 R11: fffffbfff28a9909 R12: ffffffff8f38cba0 R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc9000318f360 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432 _printk+0xd5/0x120 kernel/printk/printk.c:2457 ib_get_eth_speed+0x451/0x800 drivers/infiniband/core/verbs.c:2006 siw_query_port+0x3c/0x480 drivers/infiniband/sw/siw/siw_verbs.c:179 ib_setup_port_attrs+0x299/0x2440 drivers/infiniband/core/sysfs.c:1440 add_one_compat_dev+0x51a/0x710 drivers/infiniband/core/device.c:959 rdma_dev_init_net+0x1f1/0x280 drivers/infiniband/core/device.c:1175 ops_init+0x349/0x5b0 net/core/net_namespace.c:138 setup_net+0x287/0x9e0 net/core/net_namespace.c:362 copy_net_ns+0x33f/0x570 net/core/net_namespace.c:516 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x57d/0xa70 kernel/fork.c:3342 __do_sys_unshare kernel/fork.c:3413 [inline] __se_sys_unshare kernel/fork.c:3411 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3411 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fef56b8e967 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0d193c18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007fef56da5f40 RCX: 00007fef56b8e967 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00007fef56da6738 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000008 R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000