ip6_tunnel: ip6gretap0 xmit: Local address not yet configured! rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (1 GPs behind) idle=224c/1/0x4000000000000004 softirq=152483/152484 fqs=14 rcu: (t=10500 jiffies g=283205 q=62 ncpus=2) rcu: rcu_preempt kthread starved for 10469 jiffies! g283205 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:28304 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xedb/0x5af0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_timeout+0x137/0x290 kernel/time/timer.c:2167 rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.7.0-rc8-syzkaller-00055-g5eff55d725a4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:134 [inline] RIP: 0010:lock_is_held_type+0xf5/0x140 kernel/locking/lockdep.c:5827 Code: f0 41 0f 94 c5 48 c7 c7 c0 b1 cc 8a e8 e4 11 00 00 b8 ff ff ff ff 65 0f c1 05 ff 7a 82 75 83 f8 01 75 29 9c 58 f6 c4 02 75 3f <48> f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 44 89 e8 5b 5d 41 5c RSP: 0018:ffffc90000187c28 EFLAGS: 00000046 RAX: 0000000000000046 RBX: ffff8880b993d600 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8accb1c0 RDI: ffffffff8b2f0220 RBP: ffffffff8ce50d10 R08: 0000000000000004 R09: 000000000007acba R10: 000000000007acba R11: 0000000000000000 R12: ffff888017e53b80 R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe45571338 CR3: 000000007b2a8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_rdp_is_offloaded+0x31/0xf0 kernel/rcu/tree_plugin.h:27 rcu_needs_cpu+0xb5/0x100 kernel/rcu/tree.c:661 tick_nohz_next_event+0x1b0/0x530 kernel/time/tick-sched.c:827 tick_nohz_get_sleep_length+0x182/0x240 kernel/time/tick-sched.c:1261 menu_select+0x4f2/0x19f0 drivers/cpuidle/governors/menu.c:286 cpuidle_idle_call kernel/sched/idle.c:208 [inline] do_idle+0x2f0/0x400 kernel/sched/idle.c:282 cpu_startup_entry+0x50/0x60 kernel/sched/idle.c:380 start_secondary+0x20e/0x2a0 arch/x86/kernel/smpboot.c:336 secondary_startup_64_no_verify+0x178/0x17b CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.7.0-rc8-syzkaller-00055-g5eff55d725a4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 a6 5e e4 f6 48 89 df e8 8e d6 e4 f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 45 8f d6 f6 65 8b 05 76 26 80 75 85 c0 74 12 5b RSP: 0018:ffffc90000007a90 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffff888142a90000 RCX: 1ffffffff23f0d04 RDX: 0000000000000000 RSI: ffffffff8accaec0 RDI: ffffffff8b2f0220 RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff23e39f0 R10: ffffffff91f1cf87 R11: 0000000000000002 R12: ffff88802e075b00 R13: ffff88802e075a00 R14: dffffc0000000000 R15: 1ffff92000000f82 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020004000 CR3: 000000000cd77000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] dummy_timer+0x1f57/0x3600 drivers/usb/gadget/udc/dummy_hcd.c:2001 call_timer_fn+0x193/0x590 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb20 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x21a/0x8de kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_task_switch.isra.0+0x223/0xca0 kernel/sched/core.c:5250 Code: 0a 00 00 44 8b 0d 35 90 be 0d 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 cc f8 ff ff e8 07 47 33 00 fb 65 48 8b 1c 25 c0 bc 03 00 <48> 8d bb d8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffffff8cc07c18 EFLAGS: 00000206 RAX: 00000000021a34f5 RBX: ffffffff8cc95900 RCX: 1ffffffff1e32149 RDX: 0000000000000000 RSI: ffffffff8accaec0 RDI: ffffffff8b2f0220 RBP: ffffffff8cc07c60 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8f193cd7 R11: 0000000000000000 R12: ffff8880b983d478 R13: ffff88801d40bb80 R14: 0000000000000000 R15: ffff8880b983c700 context_switch kernel/sched/core.c:5379 [inline] __schedule+0xee3/0x5af0 kernel/sched/core.c:6688 schedule_idle+0x5b/0x90 kernel/sched/core.c:6804 do_idle+0x28c/0x400 kernel/sched/idle.c:310 cpu_startup_entry+0x50/0x60 kernel/sched/idle.c:380 rest_init+0x16f/0x2b0 init/main.c:730 arch_call_rest_init+0x13/0x30 init/main.c:827 start_kernel+0x39f/0x480 init/main.c:1072 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:555 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:536 secondary_startup_64_no_verify+0x178/0x17b