bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5809/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=41353, q=40 ncpus=2)
task:kworker/1:3 state:R running task stack:25480 pid:5809 ppid:2 flags:0x00004000
Workqueue: mld mld_ifc_work
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x15ae/0x4660 kernel/sched/core.c:6701
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__local_bh_enable_ip+0x14b/0x1c0 kernel/softirq.c:413
spin_unlock_bh include/linux/spinlock.h:396 [inline]
rt6_uncached_list_add net/ipv6/route.c:147 [inline]
icmp6_dst_alloc+0x386/0x400 net/ipv6/route.c:3338
mld_sendpack+0x6c1/0xd60 net/ipv6/mcast.c:1840
mld_send_cr net/ipv6/mcast.c:2150 [inline]
mld_ifc_work+0x842/0xd60 net/ipv6/mcast.c:2686
process_one_work kernel/workqueue.c:2653 [inline]
process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2730
worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2811
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
rcu: rcu_preempt kthread starved for 1452 jiffies! g41353 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:27080 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x15ae/0x4660 kernel/sched/core.c:6701
schedule+0xbd/0x170 kernel/sched/core.c:6775
schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
rcu_gp_fqs_loop+0x30d/0x1590 kernel/rcu/tree.c:1667
rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 10878 Comm: syz.2.1746 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:debug_check_no_locks_freed+0x23e/0x400 kernel/locking/lockdep.c:6594
Code: 24 60 f7 44 24 60 00 02 00 00 41 c6 44 36 04 f8 0f 85 fc 00 00 00 f7 44 24 30 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <49> c7 04 36 00 00 00 00 41 c7 44 36 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000005e80 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff88801b79e4d8 RCX: ffffffff8d131d00
RDX: ffff88801b79e4d8 RSI: dffffc0000000000 RDI: ffff888048652c80
RBP: ffffc90000005f80 R08: ffff88801b79da00 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000100 R12: ffff88801b79e6c0
R13: 1ffff110036f3c9b R14: 1ffff92000000bd8 R15: ffff88801b79e6d0
FS: 00007fc04eedd6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e6a25ba6e CR3: 00000000601d1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
slab_free_hook mm/slub.c:1783 [inline]
slab_free_freelist_hook+0xc1/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x290 mm/slub.c:3852
packet_rcv+0x15b/0x1410 net/packet/af_packet.c:2278
dev_queue_xmit_nit+0xb0c/0xba0 net/core/dev.c:2385
xmit_one net/core/dev.c:3640 [inline]
dev_hard_start_xmit+0x150/0x790 net/core/dev.c:3660
__dev_queue_xmit+0x198c/0x3630 net/core/dev.c:4454
dev_queue_xmit include/linux/netdevice.h:3115 [inline]
hsr_xmit net/hsr/hsr_forward.c:382 [inline]
hsr_forward_do net/hsr/hsr_forward.c:473 [inline]
hsr_forward_skb+0x12a9/0x20b0 net/hsr/hsr_forward.c:626
hsr_dev_xmit+0x1e7/0x350 net/hsr/hsr_device.c:238
__netdev_start_xmit include/linux/netdevice.h:4945 [inline]
netdev_start_xmit include/linux/netdevice.h:4959 [inline]
xmit_one net/core/dev.c:3644 [inline]
dev_hard_start_xmit+0x269/0x790 net/core/dev.c:3660
__dev_queue_xmit+0x198c/0x3630 net/core/dev.c:4454
dev_queue_xmit include/linux/netdevice.h:3115 [inline]
br_dev_queue_push_xmit+0x6b7/0x880 net/bridge/br_forward.c:53
NF_HOOK+0x66e/0x700 include/linux/netfilter.h:304
br_nf_post_routing+0xa3b/0xec0 net/bridge/br_netfilter_hooks.c:977
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:259 [inline]
NF_HOOK+0x23e/0x3e0 include/linux/netfilter.h:302
br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:66
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1184 [inline]
br_nf_forward_finish+0xa69/0xe90 net/bridge/br_netfilter_hooks.c:684
NF_HOOK+0x66e/0x700 include/linux/netfilter.h:304
br_nf_forward_ip+0xc78/0x10d0 net/bridge/br_netfilter_hooks.c:754
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:259 [inline]
NF_HOOK+0x23e/0x3e0 include/linux/netfilter.h:302
__br_forward+0x433/0x610 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0xb5/0x150 net/bridge/br_forward.c:191
br_flood+0x317/0x670 net/bridge/br_forward.c:237
br_handle_frame_finish+0xf2d/0x15c0 net/bridge/br_input.c:215
br_nf_hook_thresh+0x3cd/0x4a0 net/bridge/br_netfilter_hooks.c:1184
br_nf_pre_routing_finish_ipv6+0x9e5/0xd20 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:304 [inline]
br_nf_pre_routing_ipv6+0x34d/0x6a0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x1240/0x14d0 net/bridge/br_input.c:424
__netif_receive_skb_core+0xf94/0x3ab0 net/core/dev.c:5540
__netif_receive_skb_one_core net/core/dev.c:5644 [inline]
__netif_receive_skb+0x74/0x290 net/core/dev.c:5760
process_backlog+0x380/0x710 net/core/dev.c:6088
__napi_poll+0xbb/0x460 net/core/dev.c:6650
napi_poll net/core/dev.c:6717 [inline]
net_rx_action+0x65f/0xcc0 net/core/dev.c:6853
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:perf_swevent_get_recursion_context+0x52/0x150 kernel/events/core.c:9969
Code: 07 0f 87 d6 00 00 00 e8 bc 4f d8 ff 49 bf 00 00 00 00 00 fc ff df 48 8d 1c dd 30 2a a9 8c 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 14 cd 30 00 4c 8b 33 65 8b 05 02 93 54 7e 89 c3
RSP: 0018:ffffc90019cdecb0 EFLAGS: 00000246
RAX: 1ffffffff1952546 RBX: ffffffff8ca92a30 RCX: 0000000000080000
RDX: ffffc9000d442000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 0000000000000000 R08: ffffffff8e8c7caf R09: 1ffffffff1d18f95
R10: dffffc0000000000 R11: fffffbfff1d18f96 R12: ffffe8ffffa02990
R13: dffffc0000000000 R14: ffffc90019cded80 R15: dffffc0000000000
perf_trace_buf_alloc+0x59/0x290 kernel/trace/trace_event_perf.c:410
perf_trace_lock+0x19d/0x3b0 include/trace/events/lock.h:50
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x866/0x8c0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock include/linux/rcupdate.h:819 [inline]
trace_call_bpf+0x5dd/0x6c0 kernel/trace/bpf_trace.c:145
perf_trace_run_bpf_submit+0x7a/0x1c0 kernel/events/core.c:10287
perf_trace_lock+0x303/0x3b0 include/trace/events/lock.h:50
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x866/0x8c0 kernel/locking/lockdep.c:5765
debug_objects_fill_pool+0xcc/0x790 lib/debugobjects.c:655
debug_object_activate+0x36/0x500 lib/debugobjects.c:743
debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
__call_rcu_common kernel/rcu/tree.c:2706 [inline]
call_rcu+0xa6/0x900 kernel/rcu/tree.c:2837
gro_cells_destroy+0x34e/0x3c0 net/core/gro_cells.c:128
ip_tunnel_dev_free+0x19/0x60 net/ipv4/ip_tunnel.c:1044
netdev_run_todo+0xbe7/0xdb0 net/core/dev.c:10631
ip_tunnel_delete_nets+0x32f/0x380 net/ipv4/ip_tunnel.c:1158
ops_exit_list net/core/net_namespace.c:178 [inline]
setup_net+0x85a/0xa20 net/core/net_namespace.c:375
copy_net_ns+0x35e/0x5d0 net/core/net_namespace.c:520
create_new_namespaces+0x3ce/0x700 kernel/nsproxy.c:110
copy_namespaces+0x42a/0x4a0 kernel/nsproxy.c:179
copy_process+0x16f6/0x3da0 kernel/fork.c:2512
kernel_clone+0x24b/0x8a0 kernel/fork.c:2918
__do_sys_clone kernel/fork.c:3061 [inline]
__se_sys_clone kernel/fork.c:3045 [inline]
__x64_sys_clone+0x1b7/0x230 kernel/fork.c:3045
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc04df9de99
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:00007fc04eedcfd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fc04e225fa0 RCX: 00007fc04df9de99
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000041200000
RBP: 00007fc04e033eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fc04e226038 R14: 00007fc04e225fa0 R15: 00007ffd1460dd88
net_ratelimit: 150 callbacks suppressed
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
net_ratelimit: 1912 callbacks suppressed
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)