ip6_tunnel: ip6gre1 xmit: Local address not yet configured! rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5185/1:b..l rcu: (detected by 1, t=10502 jiffies, g=92985, q=741 ncpus=2) task:udevd state:R running task stack:24008 pid:5185 tgid:5185 ppid:1 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5387 [inline] __schedule+0x10e9/0x6820 kernel/sched/core.c:7188 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7512 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:476 [inline] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline] irqentry_exit+0x1fe/0x790 kernel/entry/common.c:164 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_release+0x19e/0x310 kernel/locking/lockdep.c:5893 Code: ff 65 0f c1 05 1b fc 2d 12 83 f8 01 0f 85 28 01 00 00 9c 58 f6 c4 02 0f 85 13 01 00 00 41 f7 c6 00 02 00 00 0f 85 c0 00 00 00 <48> 8b 44 24 10 65 48 2b 05 6d b4 2d 12 0f 85 4e 01 00 00 48 83 c4 RSP: 0018:ffffc900034f7948 EFLAGS: 00000206 RAX: 0000000000000046 RBX: ffffffff8e7e6ee0 RCX: ffffc900034f7954 RDX: 0000000000000000 RSI: ffffffff8df28a0d RDI: ffffffff8c1be760 RBP: ffffffff81b8256e R08: 0000000000000001 R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000017557 R12: ffff888036630000 R13: ffffc900034f7a00 R14: 0000000000000202 R15: 0000000000000001 rcu_lock_release include/linux/rcupdate.h:310 [inline] rcu_read_unlock include/linux/rcupdate.h:869 [inline] class_rcu_destructor include/linux/rcupdate.h:1181 [inline] unwind_next_frame+0x3c3/0x2090 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415 kmalloc_noprof include/linux/slab.h:950 [inline] slab_free_hook mm/slub.c:2641 [inline] slab_free mm/slub.c:6246 [inline] kmem_cache_free+0x41e/0x6c0 mm/slub.c:6373 file_free fs/file_table.c:104 [inline] __fput+0x68d/0xb50 fs/file_table.c:523 fput_close_sync+0x118/0x250 fs/file_table.c:615 __do_sys_close fs/open.c:1507 [inline] __se_sys_close fs/open.c:1492 [inline] __x64_sys_close+0x8b/0x120 fs/open.c:1492 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f53f2315a67 RSP: 002b:00007ffdd2675238 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000556e5a2a7970 RCX: 00007f53f2315a67 RDX: 000000000001a2e1 RSI: 00007f53f23f1b20 RDI: 000000000000000d RBP: 0000556e5a261dd0 R08: 00000000000122a0 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000202 R12: 0000556e5a275170 R13: 00000000000000ff R14: 0000556e34dd3be0 R15: 00007ffdd26754b0 rcu: rcu_preempt kthread timer wakeup didn't happen for 10484 jiffies! g92985 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=28412 rcu: rcu_preempt kthread starved for 10485 jiffies! g92985 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27848 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5387 [inline] __schedule+0x10e9/0x6820 kernel/sched/core.c:7188 __schedule_loop kernel/sched/core.c:7267 [inline] schedule+0xdd/0x390 kernel/sched/core.c:7282 schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1a9/0x900 kernel/rcu/tree.c:2095 rcu_gp_kthread+0x179/0x230 kernel/rcu/tree.c:2297 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 17091 Comm: syz.2.3676 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:__lock_acquire+0x43/0x2630 kernel/locking/lockdep.c:5098 Code: e1 2d 12 4c 89 64 24 68 4c 8b a4 24 a8 00 00 00 85 db 0f 84 58 03 00 00 48 8b 07 49 89 fa 48 3d c0 57 19 94 0f 84 46 03 00 00 <44> 8b 1d d6 a2 89 0c 89 f3 41 89 d7 41 89 ce 45 85 db 0f 84 0b 03 RSP: 0000:ffffc90005057bc8 EFLAGS: 00000002 RAX: ffffffff9b221c40 RBX: 0000000000000001 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e7e6ee0 RBP: ffffffff8e7e6ee0 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8e7e6ee0 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f04093ff6c0(0000) GS:ffff8881242f8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f04093feff8 CR3: 0000000066d7f000 CR4: 00000000003526f0 Call Trace: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b1/0x370 kernel/locking/lockdep.c:5825 rcu_lock_acquire include/linux/rcupdate.h:300 [inline] rcu_read_lock include/linux/rcupdate.h:838 [inline] advance_sched+0x699/0xc80 net/sched/sch_taprio.c:991 __run_hrtimer kernel/time/hrtimer.c:1930 [inline] __hrtimer_run_queues+0x470/0xa00 kernel/time/hrtimer.c:1994 hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2113 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] __sysvec_apic_timer_interrupt+0x10b/0x460 arch/x86/kernel/apic/apic.c:1067 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0x51/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0033:0x7f040859c819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f04093ff028 EFLAGS: 00000246 RAX: 0000000000000005 RBX: 00007f0408816270 RCX: 00007f040859c819 RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000000 RBP: 00007f0408632c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0408816308 R14: 00007f0408816270 R15: 00007ffdaeb1e688