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): P5181/1:b..l P5486/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=110657, q=814 ncpus=2)
task:dhcpcd state:R running task stack:22696 pid:5486 tgid:5486 ppid:1 task_flags:0x400140 flags:0x00080800
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7183
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7507
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:56 [inline]
RIP: 0010:unwind_next_frame+0x1a42/0x2550 arch/x86/kernel/unwind_orc.c:694
Code: 58 80 3c 28 00 74 05 e8 6c ac ba 00 4d 8b 66 38 49 8d 7e 08 48 89 f8 48 c1 e8 03 80 3c 28 00 74 05 e8 52 ac ba 00 4d 8b 6e 08 <4d> 8d 7e 10 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 35
RSP: 0018:ffffc90003456fd8 EFLAGS: 00000246
RAX: 1ffff9200068ae16 RBX: ffffffff914cbf01 RCX: 0000000000000001
RDX: ffffc900034570e8 RSI: dffffc0000000000 RDI: ffffc900034570b0
RBP: dffffc0000000000 R08: ffffc90003457b10 R09: 0000000000000000
R10: ffffc900034570f8 R11: fffff5200068ae21 R12: ffffc90003457b20
R13: ffffc90003450000 R14: ffffc900034570a8 R15: ffffffff81766536
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:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
__slab_free+0x263/0x2b0 mm/slub.c:5573
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 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:4538 [inline]
slab_alloc_node mm/slub.c:4866 [inline]
__do_kmalloc_node mm/slub.c:5259 [inline]
__kmalloc_node_track_caller_noprof+0x493/0x7b0 mm/slub.c:5368
kmalloc_reserve net/core/skbuff.c:635 [inline]
__alloc_skb+0x2c1/0x7d0 net/core/skbuff.c:713
alloc_skb include/linux/skbuff.h:1383 [inline]
alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6734
sock_alloc_send_pskb+0x878/0x990 net/core/sock.c:2998
unix_dgram_sendmsg+0x460/0x18d0 net/unix/af_unix.c:2141
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
sock_write_iter+0x49b/0x4f0 net/socket.c:1254
do_iter_readv_writev+0x619/0x8c0 fs/read_write.c:-1
vfs_writev+0x33c/0x990 fs/read_write.c:1059
do_writev+0x154/0x2e0 fs/read_write.c:1105
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5f969e6407
RSP: 002b:00007ffc894fccf0 EFLAGS: 00000202 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f5f9695c780 RCX: 00007f5f969e6407
RDX: 0000000000000005 RSI: 00007ffc894fcd50 RDI: 000000000000000a
RBP: 0000561d9d22a800 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000561d9d22a800
R13: 000000000000012c R14: 00000000ffffffff R15: 0000000000000000
task:klogd state:R running task stack:23848 pid:5181 tgid:5181 ppid:1 task_flags:0x400100 flags:0x00080800
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7183
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7507
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:110 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline]
RIP: 0010:unwind_next_frame+0x2b7/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: ff df 0f 84 17 04 00 00 4a 8d 14 ad 04 76 44 90 45 29 e8 4a 8d 1c 82 48 83 c3 fc 49 89 d5 48 39 da 0f 86 1c 02 00 00 49 29 d5 <49> c1 fd 02 4a 8d 04 6d 00 00 00 00 4c 01 e8 48 8d 14 46 48 bd 00
RSP: 0018:ffffc900025d7258 EFLAGS: 00000246
RAX: ffffffff9049dd20 RBX: ffffffff9049dd24 RCX: ffffffff9049dd28
RDX: ffffffff9049dd24 RSI: ffffffff90c5da1c RDI: ffffffff8c27efa0
RBP: ffffffff9049dd28 R08: 0000000000000007 R09: ffffffff8e95d020
R10: ffffc900025d73d8 R11: fffff520004bae7d R12: ffffffff816d0242
R13: 0000000000000000 R14: ffffc900025d7388 R15: ffffffff9049dd24
__unwind_start+0x5b8/0x760 arch/x86/kernel/unwind_orc.c:787
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
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:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
__slab_free+0x263/0x2b0 mm/slub.c:5573
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 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:5260 [inline]
__kmalloc_node_track_caller_noprof+0x4db/0x7b0 mm/slub.c:5368
kmalloc_reserve net/core/skbuff.c:635 [inline]
__alloc_skb+0x2c1/0x7d0 net/core/skbuff.c:713
alloc_skb include/linux/skbuff.h:1383 [inline]
alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6734
sock_alloc_send_pskb+0x878/0x990 net/core/sock.c:2998
unix_dgram_sendmsg+0x460/0x18d0 net/unix/af_unix.c:2141
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
__sys_sendto+0x672/0x710 net/socket.c:2265
__do_sys_sendto net/socket.c:2272 [inline]
__se_sys_sendto net/socket.c:2268 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2268
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa68a864407
RSP: 002b:00007ffd6560ed30 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fa68a714c80 RCX: 00007fa68a864407
RDX: 000000000000005b RSI: 00007ffd6560ee70 RDI: 0000000000000003
RBP: 00007ffd6560f2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffd6560f2b8
R13: 00007ffd6560ee70 R14: 0000000000000040 R15: 00007ffd6560ee70
rcu: rcu_preempt kthread starved for 2889 jiffies! g110657 f0x0 RCU_GP_DOING_FQS(6) ->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:27544 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7183
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7364
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
force_qs_rnp kernel/rcu/tree.c:-1 [inline]
rcu_gp_fqs kernel/rcu/tree.c:-1 [inline]
rcu_gp_fqs_loop+0x661/0x11d0 kernel/rcu/tree.c:2117
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x388/0x470 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 1299 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2e/0x70 kernel/kcov.c:217
Code: 48 8b 04 24 65 48 8b 0d 08 52 78 11 65 8b 15 29 52 78 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 cc 16 00 00 00 <74> 2c 8b 91 a8 16 00 00 83 fa 02 75 21 48 8b 91 b0 16 00 00 48 8b
RSP: 0018:ffffc90000006e38 EFLAGS: 00000246
RAX: ffffffff8a86b547 RBX: dffffc0000000000 RCX: ffff888029b4dc40
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff888031bc8000
RBP: ffffc90000006f70 R08: ffff888029b4dc40 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff8a86b4c0 R12: ffff88809cf978c0
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000000dd4
FS: 0000000000000000(0000) GS:ffff888125245000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561d7855d660 CR3: 000000007af4e000 CR4: 00000000003526f0
Call Trace:
br_nf_forward_finish+0x87/0xe90 net/bridge/br_netfilter_hooks.c:636
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:318
br_nf_forward_ip+0x7ef/0xa30 net/bridge/br_netfilter_hooks.c:717
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:316
__br_forward+0x397/0x540 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver net/bridge/br_forward.c:191 [inline]
br_flood+0x6ee/0xb80 net/bridge/br_forward.c:238
br_handle_frame_finish+0x1521/0x1c80 net/bridge/br_input.c:229
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x91f/0xc30 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x374/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1277/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x98f/0x3170 net/core/dev.c:6096
__netif_receive_skb_one_core net/core/dev.c:6207 [inline]
__netif_receive_skb net/core/dev.c:6322 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6673
__napi_poll+0xae/0x340 net/core/dev.c:7737
napi_poll net/core/dev.c:7800 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7957
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline]
__dev_queue_xmit+0x1fe5/0x3950 net/core/dev.c:4905
dev_queue_xmit include/linux/netdevice.h:3401 [inline]
tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62
kthread+0x1e0/0x3f0 drivers/block/aoe/aoecmd.c:1241
kthread+0x388/0x470 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: 7349 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 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:76:a2:75:81:bc:08, 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 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:76:a2:75:81:bc:08, 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:76:a2:75:81:bc:08, vlan:0)
net_ratelimit: 10526 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:a2:75:81:bc:08, 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 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:76:a2:75:81:bc:08, 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 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:76:a2:75:81:bc:08, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)