rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2642 jiffies s: 34677 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 15546 Comm: syz.5.4259 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4728 [inline]
RIP: 0010:__lock_acquire+0x669/0x7c50 kernel/locking/lockdep.c:4999
Code: 48 89 d8 48 c1 e8 03 42 0f b6 04 00 84 c0 0f 85 37 61 00 00 45 84 f6 0f 84 1f 05 00 00 0f b6 1b 48 8b 44 24 50 42 0f b6 04 00 <84> c0 0f 85 00 62 00 00 41 f6 47 01 80 0f 85 ff 04 00 00 84 db 41
RSP: 0018:ffffc900001deb60 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81630353
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90ae2240
RBP: ffffc900001dedb0 R08: dffffc0000000000 R09: fffffbfff215c449
R10: fffffbfff215c449 R11: 1ffffffff215c448 R12: ffff888076550000
R13: 0000000000000000 R14: 0000000000000002 R15: ffff888076550cb8
FS:  00007f3b8a4646c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97b0de5ab0 CR3: 0000000059cc4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 __perf_output_begin kernel/events/ring_buffer.c:163 [inline]
 perf_output_begin_forward+0xb5/0xa80 kernel/events/ring_buffer.c:272
 __perf_event_output kernel/events/core.c:7732 [inline]
 perf_event_output_forward+0x179/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_swevent_hrtimer+0x3af/0x500 kernel/events/core.c:10927
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x515/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1873
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:kernel_text_address+0x30/0xd0 kernel/extable.c:133
Code: ff 00 00 00 81 0f 93 c0 48 81 ff e0 76 60 8a 0f 92 c1 bd 01 00 00 00 84 c8 75 0c 48 89 fb e8 87 6c ab ff 85 c0 74 07 89 e8 5b <41> 5e 5d c3 48 c7 c0 40 3c 1f 8e 48 c1 e8 03 48 b9 00 00 00 00 00
RSP: 0018:ffffc900001df7c0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff89099297 RCX: 0000000000000101
RDX: ffffc900001df801 RSI: dffffc0000000000 RDI: ffffffff89099297
RBP: 0000000000000001 R08: ffffc900001e05b0 R09: ffffc900001df858
R10: fffff5200003bf0d R11: 1ffff9200003bf0b R12: ffff888076550000
R13: ffffc900001dfc28 R14: dffffc0000000000 R15: 1ffff9200003bf0a
 __kernel_text_address+0x9/0x30 kernel/extable.c:79
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2d/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0x131/0x1a0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 kmem_cache_free+0xf7/0x290 mm/slub.c:3709
 skb_release_all net/core/skbuff.c:854 [inline]
 __kfree_skb net/core/skbuff.c:870 [inline]
 kfree_skb_reason+0x133/0x370 net/core/skbuff.c:893
 kfree_skb_list_reason net/core/skbuff.c:903 [inline]
 kfree_skb_list include/linux/skbuff.h:1231 [inline]
 skb_release_data+0x56f/0x7c0 net/core/skbuff.c:789
 skb_release_all net/core/skbuff.c:856 [inline]
 __kfree_skb net/core/skbuff.c:870 [inline]
 kfree_skb_reason+0x163/0x370 net/core/skbuff.c:893
 ip_rcv_finish_core+0xff2/0x1bd0 net/ipv4/ip_input.c:424
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 ip_sabotage_in+0x1f0/0x270 net/bridge/br_netfilter_hooks.c:1001
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xb9/0x200 net/netfilter/core.c:614
 nf_hook include/linux/netfilter.h:257 [inline]
 NF_HOOK+0x200/0x390 include/linux/netfilter.h:300
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 NF_HOOK+0x96/0x370 include/linux/netfilter.h:302
 br_handle_frame_finish+0x12dd/0x1710 net/bridge/br_input.c:204
 br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1184 [inline]
 br_nf_pre_routing_finish+0x14db/0x1f40 net/bridge/br_netfilter_hooks.c:447
 NF_HOOK+0x5f7/0x680 include/linux/netfilter.h:302
 br_nf_pre_routing+0xedc/0x1530 net/bridge/br_netfilter_hooks.c:556
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:260 [inline]
 br_handle_frame+0x919/0x12f0 net/bridge/br_input.c:406
 __netif_receive_skb_core+0xfc5/0x3840 net/core/dev.c:5475
 __netif_receive_skb_one_core net/core/dev.c:5579 [inline]
 __netif_receive_skb+0x74/0x290 net/core/dev.c:5695
 process_backlog+0x37c/0x6e0 net/core/dev.c:6023
 __napi_poll+0xc0/0x460 net/core/dev.c:6590
 napi_poll net/core/dev.c:6657 [inline]
 net_rx_action+0x5b1/0xad0 net/core/dev.c:6771
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5123
Code: 0f 84 3b 01 00 00 48 85 db 0f 85 5a 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 e0 6d c9 08 e8 6b b7 2e 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000ece7238 EFLAGS: 00000282
RAX: 68b1e14521c16800 RBX: 0000000000000000 RCX: 68b1e14521c16800
RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760
RBP: ffffc9000ece7290 R08: dffffc0000000000 R09: fffffbfff215c44b
R10: fffffbfff215c44b R11: 1ffffffff215c44a R12: ffff888076550000
R13: dffffc0000000000 R14: ffff888076b41dc0 R15: ffff8880b8f3b590
 context_switch kernel/sched/core.c:5247 [inline]
 __schedule+0x10f4/0x40b0 kernel/sched/core.c:6561
 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:qlink_to_object mm/kasan/quarantine.c:140 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:145 [inline]
RIP: 0010:qlist_free_all+0x40/0xe0 mm/kasan/quarantine.c:187
Code: 00 49 89 f6 48 89 fb 49 bd 00 00 00 00 00 fc ff df 49 89 ef 4d 89 f4 4d 85 f6 75 0b 4c 89 ff e8 66 03 00 00 49 89 c4 49 8b 2f <49> 63 84 24 c0 00 00 00 49 29 c7 4c 89 e7 4c 89 fe e8 5a ec ff ff
RSP: 0018:ffffc9000ece75a0 EFLAGS: 00000286
RAX: ffff888018455280 RBX: ffffc9000ece75e0 RCX: ffffea0000e72600
RDX: ffffea0000000000 RSI: 0000000000019d2a RDI: 0000000000019d2b
RBP: ffff888039c98400 R08: ffff88802f7cab40 R09: 00000000800c0009
R10: ffffed10171c8249 R11: 1ffff110171c8248 R12: ffff888018455280
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888039c98300
 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 __kmem_cache_alloc_node+0x140/0x260 mm/slub.c:3398
 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 find_css_set+0x9b6/0x1540 kernel/cgroup/cgroup.c:1248
 cgroup_migrate_prepare_dst+0x12c/0x6f0 kernel/cgroup/cgroup.c:2845
 cgroup_attach_task+0x524/0x840 kernel/cgroup/cgroup.c:2951
 __cgroup1_procs_write+0x2e0/0x3e0 kernel/cgroup/cgroup-v1.c:522
 cgroup_file_write+0x2f8/0x660 kernel/cgroup/cgroup.c:4100
 kernfs_fop_write_iter+0x3b2/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3b8958f6c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3b8a464038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3b897e6090 RCX: 00007f3b8958f6c9
RDX: 0000000000000012 RSI: 0000200000000380 RDI: 0000000000000005
RBP: 00007f3b89611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3b897e6128 R14: 00007f3b897e6090 R15: 00007ffeaaa0c258
 </TASK>
net_ratelimit: 4990 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 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 veth0_to_bridge with own address as source address (addr:d6:b4:19:d6:53:97, 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: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: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: 5561 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:d6:b4:19:d6:53:97, 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 veth0_to_bridge with own address as source address (addr:d6:b4:19:d6:53:97, 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 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:1b, vlan:0)