bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:d6:cb:fb:02:93, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4063/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=93201, q=530 ncpus=1)
task:kworker/u8:14 state:R running task stack:22776 pid:4063 tgid:4063 ppid:2 task_flags:0x4288060 flags:0x00080000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7190
irqentry_exit+0x1d8/0x8c0 kernel/entry/common.c:216
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x62/0x330 kernel/locking/lockdep.c:5872
Code: 1a 19 12 83 f8 07 0f 87 a2 02 00 00 89 c0 48 0f a3 05 d2 7b ef 0e 0f 82 74 02 00 00 8b 35 4a ac ef 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 e9 19 19 12 0f 85 ad 02 00 00 48 83 c4
RSP: 0018:ffffc9000cd67508 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3c9520 RCX: 00000000b11c69d2
RDX: 0000000000000000 RSI: ffffffff8daa5d23 RDI: ffffffff8bf2b780
RBP: 0000000000000002 R08: 0000000007c83d93 R09: 00000000307c83d9
R10: 0000000000000002 R11: ffff888032c40b30 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
kernfs_root+0x34/0x2a0 fs/kernfs/kernfs-internal.h:75
kernfs_active+0xae/0x100 fs/kernfs/dir.c:39
kernfs_drain+0xcf/0x570 fs/kernfs/dir.c:496
__kernfs_remove+0x2b0/0x920 fs/kernfs/dir.c:1513
kernfs_remove_by_name_ns+0x68/0x100 fs/kernfs/dir.c:1722
kernfs_remove_by_name include/linux/kernfs.h:633 [inline]
remove_files+0x96/0x1c0 fs/sysfs/group.c:28
sysfs_remove_group+0x8b/0x1b0 fs/sysfs/group.c:328
sysfs_remove_groups fs/sysfs/group.c:352 [inline]
sysfs_remove_groups+0x60/0xa0 fs/sysfs/group.c:344
device_remove_groups drivers/base/core.c:2843 [inline]
device_remove_attrs+0x203/0x290 drivers/base/core.c:2979
device_del+0x38e/0x9f0 drivers/base/core.c:3877
unregister_netdevice_many_notify+0x151e/0x2590 net/core/dev.c:12431
ops_exit_rtnl_list net/core/net_namespace.c:187 [inline]
ops_undo_list+0x8fc/0xab0 net/core/net_namespace.c:248
cleanup_net+0x41b/0x830 net/core/net_namespace.c:696
process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
process_scheduled_works kernel/workqueue.c:3340 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: rcu_preempt kthread starved for 1154 jiffies! g93201 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:28440 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 63 Comm: kworker/u8:5 Tainted: G U L syzkaller #0 PREEMPT(full)
Tainted: [U]=USER, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:debug_lockdep_rcu_enabled+0x2e/0x40 kernel/rcu/update.c:322
Code: 8b 05 56 fb 12 05 85 c0 74 20 8b 05 e0 2a 13 05 85 c0 74 16 65 48 8b 05 98 98 3c 08 8b 80 2c 0b 00 00 85 c0 0f 94 c0 0f b6 c0 0d 2c 03 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90
RSP: 0018:ffffc900000078b0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000046 RCX: ffffffff8a3e7f05
RDX: 1ffff1101009482f RSI: ffffffff8a3e7ceb RDI: ffff8880804a4178
RBP: ffff8880804a4000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff88801bf3a9b0 R12: 0000000000000000
R13: ffff88809b2fab40 R14: 0000000000000001 R15: ffff88807dc796d0
FS: 0000000000000000(0000) GS:ffff8881248f6000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faa75651763 CR3: 0000000079a30000 CR4: 00000000003526f0
Call Trace:
run_filter+0x89/0x320 net/packet/af_packet.c:2079
packet_rcv+0x3e1/0x17a0 net/packet/af_packet.c:2154
deliver_skb+0x1ae/0x260 net/core/dev.c:2486
__netif_receive_skb_core.constprop.0+0x1b10/0x35b0 net/core/dev.c:6036
__netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6150
__netif_receive_skb+0x1d/0x160 net/core/dev.c:6265
process_backlog+0x4ab/0x1650 net/core/dev.c:6617
__napi_poll.constprop.0+0xb3/0x540 net/core/dev.c:7681
napi_poll net/core/dev.c:7744 [inline]
net_rx_action+0x9f9/0xfa0 net/core/dev.c:7896
handle_softirqs+0x219/0x950 kernel/softirq.c:622
do_softirq kernel/softirq.c:523 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:510
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:396 [inline]
cfg80211_inform_single_bss_data+0x9ad/0x1d30 net/wireless/scan.c:2389
cfg80211_inform_bss_data+0x22b/0x3be0 net/wireless/scan.c:3228
cfg80211_inform_bss_frame_data+0x26f/0x720 net/wireless/scan.c:3319
ieee80211_bss_info_update+0x310/0xab0 net/mac80211/scan.c:230
ieee80211_rx_bss_info net/mac80211/ibss.c:1094 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1575 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1927/0x2fc0 net/mac80211/ibss.c:1602
ieee80211_iface_process_skb net/mac80211/iface.c:1736 [inline]
ieee80211_iface_work+0xe28/0x1350 net/mac80211/iface.c:1790
cfg80211_wiphy_work+0x3fb/0x560 net/wireless/core.c:438
process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
process_scheduled_works kernel/workqueue.c:3340 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
net_ratelimit: 6721 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:d6:cb:fb:02:93, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:d6:cb:fb:02:93, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:d6:cb:fb:02:93, vlan:0)
net_ratelimit: 6895 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:d6:cb:fb:02:93, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:d6:cb:fb:02:93, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:d6:cb:fb:02:93, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)