bridge0: received packet on veth1_to_bridge 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): P22697/1:b..l P22694/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=149557, q=1499 ncpus=2)
task:syz.3.4251 state:R running task stack:25640 pid:22694 tgid:22694 ppid:17214 task_flags:0x40044c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8e0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:838 [inline]
RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
RIP: 0010:unwind_next_frame+0x88/0x2550 arch/x86/kernel/unwind_orc.c:495
Code: 49 c1 ef 03 43 0f b6 04 27 84 c0 0f 85 bd 1b 00 00 41 8b 06 85 c0 0f 84 46 02 00 00 89 44 24 5c 4c 89 6c 24 68 e8 28 79 34 00 <4c> 8d 2d 00 00 00 00 48 c7 c7 80 c7 95 8e 31 f6 31 d2 b9 02 00 00
RSP: 0018:ffffc90007286fc0 EFLAGS: 00000283
RAX: 0000000000000001 RBX: ffffffff818504c8 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff818504c8 RDI: ffffc900072870a0
RBP: 1ffff92000e50e14 R08: ffffc90007287130 R09: 0000000000000006
R10: ffffc900072870b8 R11: ffffffff81b071b0 R12: dffffc0000000000
R13: ffffc90007287a90 R14: ffffc90007287068 R15: 1ffff92000e50e0d
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
free_unref_folios+0xdb2/0x14d0 mm/page_alloc.c:2999
folios_put_refs+0xa59/0xba0 mm/swap.c:1008
free_pages_and_swap_cache+0x2ba/0x490 mm/swap_state.c:401
__tlb_batch_free_encoded_pages mm/mmu_gather.c:138 [inline]
tlb_batch_pages_flush mm/mmu_gather.c:151 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:417 [inline]
tlb_flush_mmu+0x6d3/0xa30 mm/mmu_gather.c:424
tlb_finish_mmu+0xf4/0x220 mm/mmu_gather.c:549
exit_mmap+0x4b2/0x9f0 mm/mmap.c:1313
__mmput+0x118/0x420 kernel/fork.c:1178
exit_mm+0x1e4/0x2b0 kernel/exit.c:582
do_exit+0x6cd/0x2360 kernel/exit.c:964
do_group_exit+0x22d/0x2f0 kernel/exit.c:1119
get_signal+0x121b/0x12c0 kernel/signal.c:3038
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop+0xa9/0x6b0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa45e15d68e
RSP: 002b:00007fff07ad5668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00005555589d4500 RCX: 00007fa45e15d68e
RDX: 00007fff07ad56c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fa45e417da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000c7932
R13: 00007fa45e41609c R14: 00000000000c7725 R15: 00007fa45e416090
task:syz.6.4250 state:R running task stack:26216 pid:22697 tgid:22687 ppid:20786 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8e0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x10/0x70 kernel/kcov.c:217
Code: de 5b e9 b3 e8 5f 00 cc 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 0d c8 2f 71 11 <65> 8b 15 e9 2f 71 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75
RSP: 0018:ffffc9000655f348 EFLAGS: 00000246
RAX: ffffffff823bf0ad RBX: ffff88801fc764d0 RCX: ffff88802dee9f00
RDX: dffffc0000000000 RSI: 0000000000002dfa RDI: ffff88801fc764d0
RBP: 0000000000000000 R08: ffffffff823bed82 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e95c780 R12: ffffea000285ea40
R13: 1ffffd400050bd49 R14: ffffea000285ea40 R15: 000000c10b8d12ef
page_ext_put+0xd/0xc0 mm/page_ext.c:575
__reset_page_owner+0x67/0x1f0 mm/page_owner.c:312
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
__slab_free+0x274/0x2c0 mm/slub.c:5613
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4570 [inline]
slab_alloc_node mm/slub.c:4899 [inline]
kmem_cache_alloc_node_noprof+0x380/0x680 mm/slub.c:4951
kmalloc_reserve net/core/skbuff.c:613 [inline]
__alloc_skb+0x276/0x7a0 net/core/skbuff.c:713
alloc_skb include/linux/skbuff.h:1385 [inline]
nlmsg_new include/net/netlink.h:1055 [inline]
netlink_ack+0x136/0xb30 net/netlink/af_netlink.c:2492
netlink_rcv_skb+0x2a4/0x4a0 net/netlink/af_netlink.c:2561
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1899
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
____sys_sendmsg+0x9b9/0xa20 net/socket.c:2699
___sys_sendmsg+0x2a5/0x360 net/socket.c:2753
__sys_sendmsg net/socket.c:2785 [inline]
__do_sys_sendmsg net/socket.c:2790 [inline]
__se_sys_sendmsg net/socket.c:2788 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2788
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f238079ce59
RSP: 002b:00007f238161c028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2380a16270 RCX: 00007f238079ce59
RDX: 0000000004040084 RSI: 0000200000004bc0 RDI: 0000000000000005
RBP: 00007f2380832d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2380a16308 R14: 00007f2380a16270 R15: 00007ffc9ca250b8
rcu: rcu_preempt kthread starved for 3257 jiffies! g149557 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:27688 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: netns cleanup_net
RIP: 0010:advance_sched+0x1fd/0xc80 net/sched/sch_taprio.c:-1
Code: ff e8 37 83 ef 01 89 c3 31 ff 89 c6 e8 5c 70 12 f8 85 db 0f 84 46 06 00 00 e8 0f 6c 12 f8 eb 05 e8 08 6c 12 f8 48 8b 5c 24 30 <48> 8b 44 24 28 48 83 c0 f8 48 89 c1 48 c1 e9 03 48 89 4c 24 58 42
RSP: 0018:ffffc90000a08d10 EFLAGS: 00000006
RAX: ffffffff89b2d421 RBX: ffff88802c3a12f0 RCX: ffff88801d6d8000
RDX: 0000000000010000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88802c3a1300 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000141190 R12: 0000000000000000
R13: ffff88802c3a1000 R14: dffffc0000000000 R15: ffff88807d1d9c00
FS: 0000000000000000(0000) GS:ffff8881253b9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8532b65e9c CR3: 000000007d9ea000 CR4: 00000000003526f0
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1930 [inline]
__hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:1994
hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2113
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1067
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:finish_task_switch+0x41a/0xbc0 kernel/sched/core.c:5245
Code: 03 00 00 41 c7 84 24 e0 0d 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 f0 75 10 0a e8 3b dd 38 00 fb 4c 8b 65 c8 <49> 8d bc 24 c8 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc900000d7320 EFLAGS: 00000206
RAX: 00000000000a20bb RBX: ffff8880b873be60 RCX: 0000000080000001
RDX: 0000000000000007 RSI: ffffffff8dfa19b3 RDI: ffffffff8c2899a0
RBP: ffffc900000d7370 R08: ffffffff902f88f7 R09: 1ffffffff205f11e
R10: dffffc0000000000 R11: fffffbfff205f11f R12: ffff88801d6d8000
R13: ffff8880b873be38 R14: dffffc0000000000 R15: 1ffff110170e77cc
context_switch kernel/sched/core.c:5391 [inline]
__schedule+0x1848/0x57a0 kernel/sched/core.c:7189
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7370
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
_raw_spin_unlock_irqrestore+0x74/0x80 kernel/locking/spinlock.c:198
spin_unlock_irqrestore include/linux/spinlock.h:408 [inline]
__slab_free+0x222/0x2c0 mm/slub.c:-1
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5296 [inline]
__kvmalloc_node_noprof+0x520/0x890 mm/slub.c:6833
allocate_hook_entries_size net/netfilter/core.c:54 [inline]
__nf_hook_entries_try_shrink+0x34e/0x720 net/netfilter/core.c:253
__nf_unregister_net_hook+0x4be/0x6d0 net/netfilter/core.c:513
nf_unregister_net_hook net/netfilter/core.c:-1 [inline]
nf_unregister_net_hooks+0xcb/0x140 net/netfilter/core.c:606
ops_pre_exit_list net/core/net_namespace.c:161 [inline]
ops_undo_list+0x17d/0x8d0 net/core/net_namespace.c:234
cleanup_net+0x572/0x810 net/core/net_namespace.c:702
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
rescuer_thread+0x7b6/0x10b0 kernel/workqueue.c:3621
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 9684 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
net_ratelimit: 14494 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:7a:d0:ff:8b:46, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)