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: (detected by 1, t=10502 jiffies, g=69889, q=203 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10234 (4295038999-4295028765), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10235 jiffies! g69889 f0x2 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:27048 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15278 Comm: syz.3.3041 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x3a/0xb0 kernel/rcu/tree.c:700
Code: e8 fb 69 21 09 89 c3 83 f8 08 73 60 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 30 0a aa 8c 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 bc e1 6e 00 48 c7 c3 68 6b 03 00 49 03 1e 48 89
RSP: 0018:ffffc90000006318 EFLAGS: 00000046
RAX: 1ffffffff1954146 RBX: 0000000000000000 RCX: d32ae9caa444fe00
RDX: 0000000000000000 RSI: ffffffff8b1d4000 RDI: ffffffff8b1d3fc0
RBP: 0000000000000000 R08: ffffffff8e8c626f R09: 1ffffffff1d18c4d
R10: dffffc0000000000 R11: fffffbfff1d18c4e R12: dffffc0000000000
R13: 0000000000000000 R14: ffffffff8caa0a30 R15: dffffc0000000000
FS: 00007fbfee68a6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e984b4d660 CR3: 00000000187cc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
trace_local_timer_entry arch/x86/include/asm/trace/irq_vectors.h:41 [inline]
__sysvec_apic_timer_interrupt+0x80/0x3b0 arch/x86/kernel/apic/apic.c:1093
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0x51/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__sanitizer_cov_trace_switch+0x3e/0xe0 kernel/kcov.c:-1
Code: ca 0f 86 c3 00 00 00 f3 48 0f bc c8 48 83 c1 fd 48 83 f9 03 0f 87 b0 00 00 00 48 8b 06 48 85 c0 0f 84 a4 00 00 00 41 57 41 56 <41> 54 53 48 8d 4c 09 01 48 8b 54 24 20 65 4c 8b 05 3d 22 7c 7e 45
RSP: 0018:ffffc90000006420 EFLAGS: 00000206
RAX: 0000000000000003 RBX: ffffffff8f99ba8e RCX: 0000000000000001
RDX: 000000000000001f RSI: ffffffff8cfa0980 RDI: 0000000000000001
RBP: ffffc90000006558 R08: ffffc90000006567 R09: 0000000000000000
R10: ffffc90000006558 R11: fffff52000000cad R12: ffffc900000077c0
R13: ffffc90000006508 R14: 0000000000000001 R15: dffffc0000000000
unwind_next_frame+0x16d1/0x2990 arch/x86/kernel/unwind_orc.c:641
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x290 mm/slub.c:3852
skb_ext_del include/linux/skbuff.h:4833 [inline]
nf_bridge_info_free net/bridge/br_netfilter_hooks.c:152 [inline]
br_nf_dev_queue_xmit+0x5ec/0x1af0 net/bridge/br_netfilter_hooks.c:874
NF_HOOK+0x66e/0x700 include/linux/netfilter.h:304
br_nf_post_routing+0xa3b/0xec0 net/bridge/br_netfilter_hooks.c:981
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:1188 [inline]
br_nf_forward_finish+0xa69/0xe90 net/bridge/br_netfilter_hooks.c:688
NF_HOOK+0x66e/0x700 include/linux/netfilter.h:304
br_nf_forward_ip+0xc78/0x10d0 net/bridge/br_netfilter_hooks.c:758
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:1188
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+0xf94/0x3ac0 net/core/dev.c:5564
__netif_receive_skb_one_core net/core/dev.c:5668 [inline]
__netif_receive_skb+0x74/0x290 net/core/dev.c:5784
process_backlog+0x380/0x710 net/core/dev.c:6112
__napi_poll+0xbb/0x460 net/core/dev.c:6674
napi_poll net/core/dev.c:6741 [inline]
net_rx_action+0x65f/0xcc0 net/core/dev.c:6877
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:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256
Code: 34 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 e3 88 3e 09 e8 3e 28 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc9000b6aef60 EFLAGS: 00000286
RAX: d32ae9caa444fe00 RBX: 0000000000000000 RCX: d32ae9caa444fe00
RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d4020
RBP: ffffc9000b6aefb0 R08: ffffffff911f052f R09: 1ffffffff223e0a5
R10: dffffc0000000000 R11: fffffbfff223e0a6 R12: ffff88802c848000
R13: 1ffff110171c79a1 R14: dffffc0000000000 R15: ffff8880b8e3cd08
context_switch kernel/sched/core.c:5385 [inline]
__schedule+0x15b6/0x4660 kernel/sched/core.c:6701
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7011
irqentry_exit+0x67/0x70 kernel/entry/common.c:441
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:put_cpu_partial+0x1b0/0x250 mm/slub.c:2742
Code: 3b 44 24 18 0f 85 b4 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 1c df b2 08 f7 c5 00 02 00 00 74 c0 fb 4d 85 e4 <75> bf eb c8 e8 37 54 51 02 85 c0 0f 84 e9 fe ff ff 83 3d 18 cb ac
RSP: 0018:ffffc9000b6af358 EFLAGS: 00000246
RAX: d32ae9caa444fe00 RBX: ffff88801de45640 RCX: d32ae9caa444fe00
RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d4020
RBP: 0000000000000282 R08: ffffffff911f052f R09: 1ffffffff223e0a5
R10: dffffc0000000000 R11: fffffbfff223e0a6 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802c848000 R15: ffff8880b8e443d0
__slab_free+0x319/0x400 mm/slub.c:3700
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x75/0xd0 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:306
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:770
slab_alloc_node mm/slub.c:3495 [inline]
__kmem_cache_alloc_node+0x194/0x250 mm/slub.c:3534
__do_kmalloc_node mm/slab_common.c:1006 [inline]
__kmalloc+0xa7/0x240 mm/slab_common.c:1020
kmalloc include/linux/slab.h:604 [inline]
kzalloc include/linux/slab.h:721 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x2ad/0x570 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x57c/0x5c0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_check_open_permission+0x224/0x460 security/tomoyo/file.c:771
security_file_open+0x62/0xa0 security/security.c:2968
do_dentry_open+0x32b/0x14b0 fs/open.c:916
do_open fs/namei.c:3683 [inline]
path_openat+0x284f/0x3270 fs/namei.c:3844
do_filp_open+0x1f2/0x430 fs/namei.c:3871
do_sys_openat2+0x134/0x1d0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_openat fs/open.c:1453 [inline]
__se_sys_openat fs/open.c:1448 [inline]
__x64_sys_openat+0x139/0x160 fs/open.c:1448
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: 0033:0x7fbfed79e199
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:00007fbfee68a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbfeda26090 RCX: 00007fbfed79e199
RDX: 0000000000000000 RSI: 0000200000000240 RDI: ffffffffffffff9c
RBP: 00007fbfed8350b8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbfeda26128 R14: 00007fbfeda26090 R15: 00007ffe43d2b468
net_ratelimit: 1203 callbacks suppressed
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 bridge_slave_0 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 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:7e:a1:d4:21:d3:e9, 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:ce:21:f5:1e:c1:b4, 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:52:8f:26:c9:e7:35, vlan:0)
net_ratelimit: 6358 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:7e:11:94:0f:bf:a7, 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 bridge_slave_0 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 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:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:a1:d4:21:d3:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:52:8f:26:c9:e7:35, vlan:0)