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:5a:41:c4:54:78:75, 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:5a:41:c4:54:78:75, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P18717/1:b..l
rcu: (detected by 0, t=10596 jiffies, g=102137, q=952 ncpus=2)
task:syz-executor state:R running task stack:22016 pid:18717 tgid:18717 ppid:18709 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:rcu_preempt_read_exit kernel/rcu/tree_plugin.h:398 [inline]
RIP: 0010:__rcu_read_unlock+0x36/0xe0 kernel/rcu/tree_plugin.h:435
Code: 53 49 bf 00 00 00 00 00 fc ff df 65 48 8b 3d 29 c0 e8 12 48 8d 9f c4 04 00 00 49 89 dc 49 c1 ec 03 43 0f b6 04 3c 84 c0 75 4f 0b 75 1d 4c 8d b7 c8 04 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc90003b574e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888053032404 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e6f16db RDI: ffff888053031f40
RBP: 0000000000000000 R08: ffffffff81d8aee6 R09: 0000000000000000
R10: ffffc90003b575f8 R11: ffffffff81b2c4a0 R12: 1ffff1100a606480
R13: dffffc0000000000 R14: 00007f47f699d4fc R15: dffffc0000000000
rcu_read_unlock include/linux/rcupdate.h:882 [inline]
is_bpf_text_address+0x292/0x2b0 kernel/bpf/core.c:752
kernel_text_address+0xa5/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:385
arch_stack_walk+0xfb/0x150 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:183
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:338
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__slab_free+0x274/0x2c0 mm/slub.c:5823
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:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4683 [inline]
slab_alloc_node mm/slub.c:4996 [inline]
kmem_cache_alloc_noprof+0x2b9/0x600 mm/slub.c:5010
alloc_empty_file+0x5b/0x1d0 fs/file_table.c:262
path_openat+0xa2/0x1d60 fs/namei.c:4986
do_file_open+0x23e/0x4a0 fs/namei.c:5029
do_sys_openat2+0x115/0x200 fs/open.c:1417
do_sys_open fs/open.c:1423 [inline]
__do_sys_openat fs/open.c:1439 [inline]
__se_sys_openat fs/open.c:1434 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1434
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f47f699d4fc
RSP: 002b:00007fffc97ad440 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000001be RCX: 00007f47f699d4fc
RDX: 0000000000090800 RSI: 00007f47f6a351bd RDI: 00000000ffffff9c
RBP: 00007fffc97ad4ec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000081
R13: 0000000000000000 R14: 0000000000081bb0 R15: 00007fffc97ad540
rcu: rcu_preempt kthread starved for 1672 jiffies! g102137 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
__schedule_loop kernel/sched/core.c:7361 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7376
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 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: 34 Comm: kcompactd0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:118 [inline]
RIP: 0010:lock_is_held_type+0x1a/0x150 kernel/locking/lockdep.c:6009
Code: 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 bb ff ff ff ff 83 3d 86 0a 92 05 00 <0f> 84 e4 00 00 00 65 8b 05 b1 bc ad 08 85 c0 0f 85 d5 00 00 00 65
RSP: 0018:ffffc90000a18280 EFLAGS: 00000202
RAX: 1ffffffff1fac401 RBX: 00000000ffffffff RCX: 8000000000000102
RDX: 8000000000000100 RSI: 00000000ffffffff RDI: ffffffff8fd5c8a0
RBP: 0000000000000001 R08: 0000000000000100 R09: ffffc90000a185f0
R10: ffffc90000a18440 R11: fffff5200014308a R12: 0000000000000003
R13: ffff8880841570c8 R14: dffffc0000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f472cbf0c38 CR3: 0000000074852000 CR4: 00000000003526f0
Call Trace:
__in6_dev_get include/net/addrconf.h:348 [inline]
ip6_ignore_linkdown+0x66/0x140 include/net/addrconf.h:457
find_match+0x9c/0xb40 net/ipv6/route.c:784
__find_rr_leaf+0x243/0x740 net/ipv6/route.c:873
find_rr_leaf net/ipv6/route.c:894 [inline]
rt6_select net/ipv6/route.c:938 [inline]
fib6_table_lookup+0x3c6/0xae0 net/ipv6/route.c:2261
ip6_pol_route+0x229/0x14d0 net/ipv6/route.c:2298
pol_lookup_func include/net/ip6_fib.h:672 [inline]
fib6_rule_lookup+0x512/0x6e0 net/ipv6/fib6_rules.c:123
ip6_route_input_lookup net/ipv6/route.c:2369 [inline]
ip6_route_input+0x78d/0xb20 net/ipv6/route.c:2672
ip6_rcv_finish+0x141/0x280 net/ipv6/ip6_input.c:117
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:325
__netif_receive_skb_one_core net/core/dev.c:6297 [inline]
__netif_receive_skb net/core/dev.c:6410 [inline]
process_backlog+0x795/0x18b0 net/core/dev.c:6761
__napi_poll+0xaa/0x330 net/core/dev.c:7830
napi_poll net/core/dev.c:7893 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8050
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:finish_task_switch+0x413/0xc60 kernel/sched/core.c:5384
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 47 20 55 0a e8 12 2f 3a 00 fb 4c 8b 65 c8 <49> 8d bc 24 18 17 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90000aa7780 EFLAGS: 00000202
RAX: 00000000000ba1c1 RBX: ffff8880b853c8e0 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e46914c RDI: ffffffff8c6dd880
RBP: ffffc90000aa77d0 R08: ffffffff917a717f R09: 1ffffffff22f4e2f
R10: dffffc0000000000 R11: fffffbfff22f4e30 R12: ffff888022acddc0
R13: ffff8880b853c8a8 R14: dffffc0000000000 R15: 1ffff110170a791c
context_switch kernel/sched/core.c:5536 [inline]
__schedule+0x17e3/0x58f0 kernel/sched/core.c:7284
__schedule_loop kernel/sched/core.c:7361 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7376
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
kcompactd+0x41a/0x12c0 mm/compaction.c:3216
kthread+0x38b/0x480 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