ip6_tunnel: ip6tnl3 xmit: Local address not yet configured!
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (2 ticks this GP) idle=2394/1/0x4000000000000000 softirq=78742/78742 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P12/1:b..l
rcu: (detected by 0, t=10506 jiffies, g=66661, q=331 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 18663 Comm: syz.1.3629 Not tainted 6.16.0-syzkaller-06590-gf8fded7536a9 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x70 kernel/kcov.c:217
Code: cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 00 9a 92 65 8b 15 68 4f da 10 <81> e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 3c 16 00 00
RSP: 0018:ffffc90000a08d38 EFLAGS: 00000046
RAX: ffffffff81adae5a RBX: ffff8880b8727bc8 RCX: ffff8880323bbc00
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a08e90 R08: ffffffff8fa07af7 R09: 1ffffffff1f40f5e
R10: dffffc0000000000 R11: fffffbfff1f40f5f R12: ffff888076102340
R13: 0000000000000000 R14: ffffffff899104d0 R15: 0000000000000001
FS: 00007fe903c846c0(0000) GS:ffff888125d80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c371c66 CR3: 000000007d29e000 CR4: 00000000003526f0
Call Trace:
get_current arch/x86/include/asm/current.h:25 [inline]
__run_hrtimer kernel/time/hrtimer.c:1759 [inline]
__hrtimer_run_queues+0x4ea/0xc60 kernel/time/hrtimer.c:1825
hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
__sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0x2c5/0x310 kernel/locking/lockdep.c:6616
Code: 65 48 8b 05 9d 6a fc 10 48 3b 44 24 10 0f 84 26 fe ff ff e8 5d 32 d2 09 e8 88 33 d2 09 41 f7 c7 00 02 00 00 74 bd fb 40 84 ed <75> bc eb cd 90 0f 0b 90 e9 19 ff ff ff 90 0f 0b 90 e9 2a ff ff ff
RSP: 0018:ffffc9000b4b7088 EFLAGS: 00000246
RAX: 243c64d7d9a90800 RBX: ffff8880783a9a98 RCX: 243c64d7d9a90800
RDX: ffffffff935dc358 RSI: ffffffff8d98cba8 RDI: ffffffff8be30a00
RBP: ffff8880783a9a00 R08: 0000000000000000 R09: ffffffff81aa7ed8
R10: dffffc0000000000 R11: fffffbfff1f40f5f R12: 0000000000000000
R13: 0000000000001000 R14: 0000000000000001 R15: 0000000000000206
__qdisc_destroy+0x166/0x420 net/sched/sch_generic.c:1083
taprio_attach+0x25a/0x380 net/sched/sch_taprio.c:2145
qdisc_graft+0x1175/0x1590 net/sched/sch_api.c:1162
__tc_modify_qdisc net/sched/sch_api.c:1756 [inline]
tc_modify_qdisc+0x189b/0x20e0 net/sched/sch_api.c:1812
rtnetlink_rcv_msg+0x77c/0xb70 net/core/rtnetlink.c:6955
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x82c/0x9e0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:714 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:729
____sys_sendmsg+0x505/0x830 net/socket.c:2614
___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668
__sys_sendmsg net/socket.c:2700 [inline]
__do_sys_sendmsg net/socket.c:2705 [inline]
__se_sys_sendmsg net/socket.c:2703 [inline]
__x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe902d8eb69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe903c84038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe902fb5fa0 RCX: 00007fe902d8eb69
RDX: 0000000000048004 RSI: 00002000000007c0 RDI: 0000000000000006
RBP: 00007fe902e11df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe902fb5fa0 R15: 00007fffec12e128
task:kworker/u8:0 state:R running task stack:22856 pid:12 tgid:12 ppid:2 task_flags:0x4208160 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5351 [inline]
__schedule+0x1737/0x4d30 kernel/sched/core.c:6954
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7281
irqentry_exit+0x6f/0x90 kernel/entry/common.c:196
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:124 [inline]
RIP: 0010:lock_acquire+0xa9/0x360 kernel/locking/lockdep.c:5844
Code: b4 24 90 00 00 00 4c 89 ef e8 03 39 85 00 83 3d bc 3b 03 0e 00 0f 84 fa 00 00 00 65 8b 05 af cf fc 10 85 c0 0f 85 eb 00 00 00 <65> 48 8b 04 25 08 00 9a 92 83 b8 ec 0a 00 00 00 0f 85 d5 00 00 00
RSP: 0018:ffffc90000117980 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ad7905578f899300
RDX: 0000000000000000 RSI: ffffffff8b3d6a2f RDI: 1ffffffff1c2789c
RBP: ffffffff8b3d6a12 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff8b3d6940 R12: 0000000000000002
R13: ffffffff8e13c4e0 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xef/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g66661 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=32605
rcu: rcu_preempt kthread starved for 10506 jiffies! g66661 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27432 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5351 [inline]
__schedule+0x1737/0x4d30 kernel/sched/core.c:6954
__schedule_loop kernel/sched/core.c:7036 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7051
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245