bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5182/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=100773, q=2101 ncpus=2)
task:klogd state:R running task stack:23288 pid:5182 tgid:5182 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_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
spin_unlock_irqrestore include/linux/spinlock.h:408 [inline]
__wake_up_common_lock+0x190/0x1f0 kernel/sched/wait.c:127
sock_def_readable+0x1eb/0x550 net/core/sock.c:3614
unix_dgram_sendmsg+0xdfd/0x18d0 net/unix/af_unix.c:2287
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: 0033:0x7f95e27df407
RSP: 002b:00007ffdca1bf4c0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f95e268fc80 RCX: 00007f95e27df407
RDX: 00000000000000a0 RSI: 00007ffdca1bf600 RDI: 0000000000000003
RBP: 00007ffdca1bfa30 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffdca1bfa48
R13: 00007ffdca1bf600 R14: 0000000000000085 R15: 00007ffdca1bf600
rcu: rcu_preempt kthread starved for 9207 jiffies! g100773 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: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
__schedule_loop kernel/sched/core.c:7262 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7277
schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 3390 Comm: kworker/R-krxrp Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: 0x0 (krxrpcd)
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:55 [inline]
RIP: 0010:unwind_next_frame+0x1a33/0x2550 arch/x86/kernel/unwind_orc.c:694
Code: 48 8b 7c 24 78 0f 85 54 01 00 00 48 8b 44 24 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
RSP: 0018:ffffc90000a07bf8 EFLAGS: 00000a06
RAX: 1ffff92000140f9a RBX: ffffffff916f1201 RCX: 0000000000000001
RDX: ffffc90000a07d08 RSI: dffffc0000000000 RDI: ffffc90000a07cd0
RBP: dffffc0000000000 R08: ffffc9000d16fa60 R09: 0000000000000000
R10: ffffc90000a07d18 R11: fffff52000140fa5 R12: ffffc9000d16fa70
R13: 1ffff92000140f9b R14: ffffc90000a07cc8 R15: ffffffff81766536
FS: 0000000000000000(0000) GS:ffff888125345000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d1bb52e9c CR3: 000000007d076000 CR4: 00000000003526f0
Call Trace:
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/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]
kfree+0x1c1/0x620 mm/slub.c:6483
skb_kfree_head net/core/skbuff.c:1075 [inline]
skb_free_head net/core/skbuff.c:1087 [inline]
skb_release_data+0x6c3/0x8f0 net/core/skbuff.c:1114
skb_release_all net/core/skbuff.c:1189 [inline]
__kfree_skb+0x5d/0x210 net/core/skbuff.c:1203
netlink_broadcast_filtered+0xdab/0xeb0 net/netlink/af_netlink.c:1535
nlmsg_multicast_filtered include/net/netlink.h:1165 [inline]
nlmsg_multicast include/net/netlink.h:1184 [inline]
nlmsg_notify+0xf0/0x1a0 net/netlink/af_netlink.c:2593
br_fdb_update+0x4c8/0x690 net/bridge/br_fdb.c:1052
br_handle_frame_finish+0x573/0x1c80 net/bridge/br_input.c:144
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 kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__schedule+0x17bc/0x5680 kernel/sched/core.c:7143
Code: d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 ba 35 7d f6 4c 89 23 4c 89 ef 4c 89 e6 e8 2c 5c 7f f5 48 89 c7 e8 d4 cf e0 f5 <31> ff 4d 39 e5 40 0f 95 c7 e8 b6 db e0 f5 48 8b 84 24 00 01 00 00
RSP: 0018:ffffc9000d16f840 EFLAGS: 00000206
RAX: 00000000000c9d5f RBX: ffff8880b873ae88 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8dfb663f RDI: ffffffff8c27f000
RBP: ffffc9000d16fa60 R08: ffffffff903215b7 R09: 1ffffffff20642b6
R10: dffffc0000000000 R11: fffffbfff20642b7 R12: ffff888032b80000
R13: ffff888032b80000 R14: dffffc0000000000 R15: ffff8880b873b9f8
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:lock_release+0x5/0x3c0 kernel/locking/lockdep.c:5876
Code: e9 70 fe ff ff 41 be 2f 00 00 00 e9 0e ff ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 30 49 89 f5 49 89 fe 65 48 8b
RSP: 0018:ffffc9000d16fb90 EFLAGS: 00000246
RAX: 1ffff92001a2df85 RBX: ffff888021fae948 RCX: ffff888032b80000
RDX: 0000000000000000 RSI: ffffffff818f32bc RDI: ffffffff8e7fb4e0
RBP: ffffc9000d16fcb8 R08: ffffffff903215b7 R09: 1ffffffff20642b6
R10: dffffc0000000000 R11: fffffbfff20642b7 R12: dffffc0000000000
R13: 1ffff92001a2df7c R14: ffffc9000d16fc20 R15: ffffffff8e7fb480
__mutex_unlock_slowpath+0xd4/0x6f0 kernel/locking/mutex.c:975
rescuer_thread+0x35c/0x1130 kernel/workqueue.c:3588
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: 9415 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:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, 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 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)
net_ratelimit: 12686 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:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:58:f8:b9:d3:16, 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 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)