bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P19516/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=116237, q=1426 ncpus=2)
task:kworker/u8:24 state:R running task stack:24872 pid:19516 tgid:19516 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: krds_cp_wq#4/0 rds_connect_worker
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 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/0x8b0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x6f1/0x2550 arch/x86/kernel/unwind_orc.c:-1
Code: 48 c7 c2 20 f6 7b 8e 4c 8b 6c 24 20 48 8d 72 04 4c 8d 62 05 48 89 f0 48 c1 e8 03 48 89 44 24 48 0f b6 04 28 84 c0 48 89 14 24 <48> 89 74 24 08 0f 85 9e 17 00 00 4c 89 e0 48 c1 e8 03 0f b6 04 28
RSP: 0018:ffffc90003417238 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff905284c8 RCX: ffffffff905284cc
RDX: ffffffff90d31c36 RSI: ffffffff90d31c3a RDI: ffffffff8c28b880
RBP: dffffc0000000000 R08: 0000000000000003 R09: ffffffff8e95cc20
R10: ffffc90003417358 R11: ffffffff81b0e0e0 R12: ffffffff90d31c3b
R13: 1ffff92000682e61 R14: ffffc90003417308 R15: ffffffff8176e256
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_frozen_pages+0xc1c/0xd30 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_noprof+0x2bc/0x650 mm/slub.c:4906
lsm_inode_alloc security/security.c:254 [inline]
security_inode_alloc+0x39/0x310 security/security.c:1215
inode_init_always_gfp+0x995/0xd50 fs/inode.c:305
inode_init_always include/linux/fs.h:2936 [inline]
alloc_inode+0x82/0x1b0 fs/inode.c:352
new_inode_pseudo include/linux/fs.h:3015 [inline]
sock_alloc net/socket.c:697 [inline]
__sock_create+0x12d/0x9d0 net/socket.c:1628
rds_tcp_conn_path_connect+0x2d7/0x930 net/rds/tcp_connect.c:-1
rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
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: rcu_preempt kthread starved for 7262 jiffies! g116237 f0x0 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:27640 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
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+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:
CPU: 0 UID: 0 PID: 8141 Comm: kworker/R-bond3 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: 0x0 (bond3)
RIP: 0010:bridge_parent net/bridge/br_netfilter_hooks.c:165 [inline]
RIP: 0010:brnf_get_logical_dev net/bridge/br_netfilter_hooks.c:442 [inline]
RIP: 0010:setup_pre_routing+0x25f/0x6f0 net/bridge/br_netfilter_hooks.c:465
Code: 85 ed 0f 84 1f 01 00 00 e8 7e 47 42 f7 eb 05 e8 77 47 42 f7 4d 85 ed 74 40 e8 6d 47 42 f7 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 <74> 08 4c 89 ef e8 d7 9f ad f7 bd 88 00 00 00 49 03 6d 00 48 89 e8
RSP: 0018:ffffc900000076c8 EFLAGS: 00000246
RAX: 1ffff110064ba500 RBX: ffff888094188640 RCX: ffff888035765d00
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8a838dae R09: ffffffff8e95cc20
R10: ffff8880976ac910 R11: ffffed1012ed5926 R12: ffff88802763ec00
R13: ffff8880325d2800 R14: dffffc0000000000 R15: ffff8880976ac910
FS: 0000000000000000(0000) GS:ffff8881252a0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff9da78ea8 CR3: 00000000a48ee000 CR4: 00000000003526f0
Call Trace:
br_nf_pre_routing_ipv6+0x15c/0x6f0 net/bridge/br_netfilter_ipv6.c:174
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:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
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:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:preempt_count_add+0x3b/0x190 kernel/sched/core.c:5854
Code: ff df 48 c7 c0 e0 63 43 9a 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 ea 00 00 00 83 3d 1e 9c af 18 00 75 07 65 8b 05 65 38 a4 11 <65> 01 3d 5e 38 a4 11 48 c7 c0 e0 63 43 9a 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc900057b7aa0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000000 RCX: ffffffff9a436303
RDX: 0000000000000000 RSI: ffffffff8e2172cb RDI: 0000000000000001
RBP: ffffc900057b7c78 R08: ffffc900057b7be7 R09: 0000000000000000
R10: ffffc900057b7bc0 R11: fffff52000af6f7d R12: ffffffff8e7fae20
R13: 0000000000000000 R14: dffffc0000000000 R15: dffffc0000000000
__mutex_lock_common kernel/locking/mutex.c:645 [inline]
__mutex_lock+0x177/0x1550 kernel/locking/mutex.c:820
worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2729
rescuer_thread+0x35c/0x1130 kernel/workqueue.c:3614
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: 17690 callbacks suppressed
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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, 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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)