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): P7593/1:b..l P7586/1:b..l P7585/1:b..l P7603/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=23713, q=5982 ncpus=2)
task:kworker/u10:16 state:R running task stack:29336 pid:7603 tgid:7603 ppid:2 task_flags:0x4208060 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_notrace+0x5f/0xd0 kernel/sched/core.c:7188
preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
rcu_lockdep_current_cpu_online kernel/rcu/tree.c:4050 [inline]
rcu_lockdep_current_cpu_online+0x10b/0x150 kernel/rcu/tree.c:4032
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x27/0x50 kernel/rcu/update.c:349
lookup_page_ext+0x6e/0x100 mm/page_ext.c:258
page_ext_iter_begin include/linux/page_ext.h:133 [inline]
__page_table_check_zero+0xe1/0x410 mm/page_table_check.c:139
page_table_check_free include/linux/page_table_check.h:46 [inline]
__free_pages_prepare mm/page_alloc.c:1434 [inline]
__free_frozen_pages+0x7f1/0x10d0 mm/page_alloc.c:2978
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xe0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x8a/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5260 [inline]
__kmalloc_node_track_caller_noprof+0x304/0x850 mm/slub.c:5368
kvasprintf+0xbc/0x150 lib/kasprintf.c:25
__kthread_create_on_node+0x186/0x3f0 kernel/kthread.c:491
kthread_create_on_node+0xc7/0x100 kernel/kthread.c:559
create_worker+0x420/0x750 kernel/workqueue.c:2815
maybe_create_worker kernel/workqueue.c:3075 [inline]
manage_workers kernel/workqueue.c:3152 [inline]
worker_thread+0x8e2/0xe50 kernel/workqueue.c:3415
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
task:syz.3.372 state:R running task stack:27352 pid:7585 tgid:7584 ppid:5827 task_flags:0x400140 flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_common+0x42/0xc0 kernel/sched/core.c:7095
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0xff/0x120 kernel/softirq.c:457
spin_unlock_bh include/linux/spinlock.h:395 [inline]
cfg80211_mlme_unregister_socket+0x270/0x710 net/wireless/mlme.c:778
nl80211_netlink_notify net/wireless/nl80211.c:21634 [inline]
nl80211_netlink_notify+0x347/0x970 net/wireless/nl80211.c:21606
notifier_call_chain+0x99/0x420 kernel/notifier.c:85
blocking_notifier_call_chain kernel/notifier.c:380 [inline]
blocking_notifier_call_chain+0x69/0xa0 kernel/notifier.c:368
netlink_release+0x166a/0x1ff0 net/netlink/af_netlink.c:761
__sock_release+0xb3/0x260 net/socket.c:662
sock_close+0x1c/0x30 net/socket.c:1455
__fput+0x3ff/0xb40 fs/file_table.c:469
task_work_run+0x150/0x240 kernel/task_work.c:233
get_signal+0x1bd/0x21e0 kernel/signal.c:2807
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop+0x86/0x4a0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x668/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f305955cfce
RSP: 002b:00007f305a415e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: 000000000000001c RBX: 00007f305a4176c0 RCX: 00007f305955cfce
RDX: 000000000000001c RSI: 00007f305a416000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 00007f305a415f04 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f305a415f58 R14: 00007f305a416000 R15: 0000000000000000
task:modprobe state:R running task stack:25416 pid:7586 tgid:7586 ppid:6172 task_flags:0x400000 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7238
irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x156/0x1ea0 arch/x86/kernel/unwind_orc.c:510
Code: 0b 00 00 41 f6 86 88 00 00 00 03 0f 85 3b 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 75 35 4c 89 f2 48 c1 ea 03 0f b6 04 02 <4c> 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 f7 0a 00 00 48 89 e9 41
RSP: 0018:ffffc9000ed3f350 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002
RDX: 1ffff92001da7e7e RSI: ffffffff8c1b0a20 RDI: ffffffff8e12d8e0
RBP: ffffc9000ed3f408 R08: 00000000dc9aa32c R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: ffffc9000ed3f410
R13: ffffc9000ed3f3c0 R14: ffffc9000ed3f3f5 R15: ffff888027a48000
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x162/0x1e0 mm/page_owner.c:165
__reset_page_owner+0x84/0x190 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0x7e1/0x10d0 mm/page_alloc.c:2978
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xe0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4538 [inline]
slab_alloc_node mm/slub.c:4866 [inline]
kmem_cache_alloc_noprof+0x241/0x6e0 mm/slub.c:4873
anon_vma_chain_alloc mm/rmap.c:142 [inline]
anon_vma_clone+0x2bd/0xc70 mm/rmap.c:342
__split_vma+0x51f/0xd90 mm/vma.c:533
split_vma mm/vma.c:596 [inline]
vma_modify+0x1121/0x2250 mm/vma.c:1680
vma_modify_flags+0x257/0x3d0 mm/vma.c:1700
mprotect_fixup+0x209/0xb70 mm/mprotect.c:756
do_mprotect_pkey+0x9e1/0xe70 mm/mprotect.c:930
__do_sys_mprotect mm/mprotect.c:951 [inline]
__se_sys_mprotect mm/mprotect.c:948 [inline]
__x64_sys_mprotect+0x78/0xc0 mm/mprotect.c:948
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25d12ff2c7
RSP: 002b:00007ffefb538278 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f25d12d4580 RCX: 00007f25d12ff2c7
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007f25d1015000
RBP: 00007ffefb538540 R08: 0000000000000000 R09: 00007f25d10692e0
R10: 00007f25d12d4580 R11: 0000000000000206 R12: 0000000000000020
R13: 0000006aa19f17e6 R14: 0000000000000000 R15: 00007f25d1313310
task:modprobe state:R running task stack:25416 pid:7593 tgid:7593 ppid:6703 task_flags:0x40000c flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7238
irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5872
Code: 05 bb 12 29 12 83 f8 07 0f 87 f0 00 00 00 48 0f a3 05 86 62 f5 0e 0f 82 c2 02 00 00 8b 35 4e 96 f5 0e 85 f6 0f 85 dd 00 00 00 <48> 8b 44 24 30 65 48 2b 05 5d 12 29 12 0f 85 02 03 00 00 48 83 c4
RSP: 0018:ffffc9000e78f4c8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8de59977 RDI: ffffffff8c1b0aa0
RBP: ffffffff8e7e74e0 R08: 00000000891115fe R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
rcu_read_lock include/linux/rcupdate.h:850 [inline]
class_rcu_constructor include/linux/rcupdate.h:1193 [inline]
unwind_next_frame+0xd1/0x1ea0 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
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2685 [inline]
slab_free mm/slub.c:6165 [inline]
kmem_cache_free+0x124/0x6a0 mm/slub.c:6295
anon_vma_chain_free mm/rmap.c:147 [inline]
unlink_anon_vmas+0x228/0x8e0 mm/rmap.c:507
free_pgtables+0x2e7/0xd80 mm/memory.c:427
exit_mmap+0x44c/0xa30 mm/mmap.c:1314
__mmput+0x12a/0x410 kernel/fork.c:1175
mmput+0x67/0x80 kernel/fork.c:1198
exit_mm kernel/exit.c:581 [inline]
do_exit+0x819/0x2b60 kernel/exit.c:964
do_group_exit+0xd5/0x2a0 kernel/exit.c:1118
__do_sys_exit_group kernel/exit.c:1129 [inline]
__se_sys_exit_group kernel/exit.c:1127 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1127
x64_sys_call+0x102c/0x1530 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f015f89e6c5
RSP: 002b:00007fff2ff08948 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f015f99ffe8 RCX: 00007f015f89e6c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000001
RBP: 0000000000000001 R08: 00007fff2ff088d8 R09: 0000000000000000
R10: 00007fff2ff08770 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f015f99e680 R15: 00007f015f9a0000
rcu: rcu_preempt kthread starved for 5485 jiffies! g23713 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:27832 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
__schedule_loop kernel/sched/core.c:6993 [inline]
schedule+0xdd/0x390 kernel/sched/core.c:7008
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+0x754/0xd80 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:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:nf_hook.constprop.0+0x227/0x750 include/linux/netfilter.h:248
Code: 45 89 ef 41 83 fd 05 0f 87 fe 04 00 00 4b 8d bc fc b0 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 b3 04 00 00 49 81 c7 74 02 00 00 4f 8b 7c fc 10 e8 52 7b 5b
RSP: 0018:ffffc90000a08aa0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 1ffff92000141157 RCX: ffffffff8a31f2b9
RDX: 1ffff11006cf6276 RSI: ffffffff8a31f3dd RDI: ffff8880367b13b0
RBP: 000000000000000a R08: 0000000000000001 R09: 000000000000000a
R10: 000000000000000a R11: 0000000000000000 R12: ffff8880367b0000
R13: 0000000000000000 R14: ffff88807e25a000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888124449000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558ab694e8 CR3: 0000000076562000 CR4: 00000000003526f0
Call Trace:
NF_HOOK include/linux/netfilter.h:316 [inline]
ipv6_rcv+0xa4/0x3d0 net/ipv6/ip6_input.c:311
__netif_receive_skb_one_core+0x12d/0x1e0 net/core/dev.c:6164
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6277
process_backlog+0x37a/0x1580 net/core/dev.c:6628
__napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7692
napi_poll net/core/dev.c:7755 [inline]
net_rx_action+0xa40/0xf20 net/core/dev.c:7912
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
Code: 78 85 02 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 43 10 1e 00 fb f4 fc 35 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc90000197df0 EFLAGS: 00000246
RAX: 0000000000c25a93 RBX: ffff88801e690000 RCX: ffffffff8b8d7c75
RDX: 0000000000000000 RSI: ffffffff8de7fa43 RDI: ffffffff8c1b0aa0
RBP: 0000000000000001 R08: 0000000000000001 R09: ffffed10170a6795
R10: ffff8880b8533cab R11: 0000000000000000 R12: ffffed1003cd2000
R13: 0000000000000001 R14: ffffffff90d9c010 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:73 [inline]
default_idle+0x9/0x10 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x43a/0x550 kernel/sched/idle.c:341
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:439
start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x148
net_ratelimit: 5459 callbacks suppressed
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: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: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)
net_ratelimit: 8760 callbacks suppressed
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: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: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)