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: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): P17787/1:b..l P17792/3:b..l rcu: (detected by 0, t=10502 jiffies, g=52185, q=788 ncpus=1) task:syz.1.1557 state:R running task stack:22152 pid:17792 tgid:17791 ppid:5838 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0xfee/0x6120 kernel/sched/core.c:6911 preempt_schedule_common+0x42/0xc0 kernel/sched/core.c:7095 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12 __local_bh_enable_ip+0xff/0x120 kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] __neigh_event_send+0x331/0x1430 net/core/neighbour.c:1280 neigh_event_send_probe include/net/neighbour.h:480 [inline] neigh_event_send include/net/neighbour.h:486 [inline] neigh_event_send include/net/neighbour.h:484 [inline] neigh_resolve_output+0x550/0x8f0 net/core/neighbour.c:1604 neigh_output include/net/neighbour.h:556 [inline] ip6_finish_output2+0xb0f/0x1ce0 net/ipv6/ip6_output.c:136 ip6_fragment+0xbff/0x2880 net/ipv6/ip6_output.c:1026 __ip6_finish_output+0xb06/0xdf0 net/ipv6/ip6_output.c:206 ip6_finish_output net/ipv6/ip6_output.c:219 [inline] NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x2aa/0xa60 net/ipv6/ip6_output.c:246 dst_output include/net/dst.h:470 [inline] NF_HOOK include/linux/netfilter.h:318 [inline] NF_HOOK include/linux/netfilter.h:312 [inline] ip6_xmit+0x1006/0x24a0 net/ipv6/ip6_output.c:358 sctp_v6_xmit+0xd1a/0x1220 net/sctp/ipv6.c:248 sctp_packet_transmit+0x22ec/0x3060 net/sctp/output.c:653 sctp_packet_singleton+0x19e/0x370 net/sctp/outqueue.c:783 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline] sctp_outq_flush+0x315/0x3350 net/sctp/outqueue.c:1212 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1824 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1204 [inline] sctp_do_sm+0xce1/0x5be0 net/sctp/sm_sideeffect.c:1175 sctp_primitive_ASSOCIATE+0x9c/0xd0 net/sctp/primitive.c:73 sctp_sendmsg_to_asoc+0xa6a/0x1c50 net/sctp/socket.c:1840 sctp_sendmsg+0x1185/0x22b0 net/sctp/socket.c:2030 inet_sendmsg+0x11c/0x140 net/ipv4/af_inet.c:865 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] __sys_sendto+0x446/0x4b0 net/socket.c:2206 __do_sys_sendto net/socket.c:2213 [inline] __se_sys_sendto net/socket.c:2209 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2209 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f27d599c819 RSP: 002b:00007f27d67da028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f27d5c15fa0 RCX: 00007f27d599c819 RDX: 0000000000000401 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f27d5a32c91 R08: 0000200000000000 R09: 000000000000001f R10: 0000000000000101 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f27d5c16038 R14: 00007f27d5c15fa0 R15: 00007ffd56c850f8 task:syz.4.1556 state:R running task stack:26344 pid:17787 tgid:17784 ppid:7802 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0xfee/0x6120 kernel/sched/core.c:6911 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7238 irqentry_exit+0x17b/0x670 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_release+0x19e/0x320 kernel/locking/lockdep.c:5893 Code: ff 65 0f c1 05 cb cd 29 12 83 f8 01 0f 85 3d 01 00 00 9c 58 f6 c4 02 0f 85 28 01 00 00 41 f7 c6 00 02 00 00 0f 85 de 00 00 00 <48> 8b 44 24 10 65 48 2b 05 1d 86 29 12 0f 85 63 01 00 00 48 83 c4 RSP: 0018:ffffc90004166d50 EFLAGS: 00000206 RAX: 0000000000000046 RBX: ffffffff8e7e7760 RCX: ffffc90004166d5c RDX: 0000000000000001 RSI: ffffffff8de5cf1b RDI: ffffffff8c1b1da0 RBP: ffffffff81b7c2fe R08: 0000000000000001 R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000017edb R12: ffff88807da20000 R13: ffffc90004166e08 R14: 0000000000000202 R15: 0000000000000002 rcu_lock_release include/linux/rcupdate.h:322 [inline] rcu_read_unlock include/linux/rcupdate.h:881 [inline] class_rcu_destructor include/linux/rcupdate.h:1193 [inline] unwind_next_frame+0x3c3/0x1ea0 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 save_stack+0x162/0x1e0 mm/page_owner.c:165 __reset_page_owner+0x84/0x190 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_unref_folios+0xaea/0x1790 mm/page_alloc.c:3040 folios_put_refs+0x53c/0x840 mm/swap.c:1002 free_pages_and_swap_cache+0x242/0x480 mm/swap_state.c:423 __tlb_batch_free_encoded_pages+0xe9/0x280 mm/mmu_gather.c:138 tlb_batch_pages_flush mm/mmu_gather.c:151 [inline] tlb_flush_mmu_free mm/mmu_gather.c:398 [inline] tlb_flush_mmu mm/mmu_gather.c:405 [inline] tlb_finish_mmu+0x1b0/0x810 mm/mmu_gather.c:530 unmap_region+0x2d9/0x3b0 mm/vma.c:488 vms_clear_ptes mm/vma.c:1284 [inline] vms_clean_up_area mm/vma.c:1296 [inline] __mmap_setup mm/vma.c:2448 [inline] __mmap_region+0x19ac/0x29e0 mm/vma.c:2741 mmap_region+0x180/0x3e0 mm/vma.c:2837 do_mmap+0xc63/0x12f0 mm/mmap.c:559 vm_mmap_pgoff+0x29e/0x470 mm/util.c:581 ksys_mmap_pgoff+0xe1/0x650 mm/mmap.c:605 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f92a299c819 RSP: 002b:00007f92a3805028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f92a2c15fa0 RCX: 00007f92a299c819 RDX: 0000000000000003 RSI: 0000000002020009 RDI: 0000000000000000 RBP: 00007f92a2a32c91 R08: fffffffffffffffa R09: 0000000000008000 R10: 0000000000000eb1 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f92a2c16038 R14: 00007f92a2c15fa0 R15: 00007ffccd07d968 net_ratelimit: 10268 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 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) 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: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:ee:ae:2c:18:cd:df, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) net_ratelimit: 12475 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 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:ee:ae:2c:18:cd:df, 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: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) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)