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): P5854/1:b..l rcu: (detected by 1, t=10502 jiffies, g=12925, q=1682 ncpus=2) task:syz-executor.0 state:R running task stack:23696 pid:5854 tgid:5853 ppid:5120 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_is_held_type+0x13b/0x190 Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc90013de6fb8 EFLAGS: 00000206 RAX: 7ca5354dc87bf800 RBX: 0000000000000001 RCX: 0000000080000000 RDX: ffff888064698000 RSI: ffffffff8bcacd00 RDI: ffffffff8c1ff380 RBP: 0000000000000001 R08: ffffffff8acb1274 R09: 4100000000000000 R10: 00000000000080fe R11: 4100000000000000 R12: 0000000000000246 R13: ffff888064698000 R14: 00000000ffffffff R15: ffffffff8e333fa0 sctp_v6_get_dst+0xfdd/0x1e20 net/sctp/ipv6.c:383 sctp_transport_route+0x12c/0x2e0 net/sctp/transport.c:455 sctp_packet_config+0x460/0xdb0 net/sctp/output.c:103 sctp_outq_select_transport+0x474/0x580 net/sctp/outqueue.c:869 sctp_outq_flush_ctrl net/sctp/outqueue.c:903 [inline] sctp_outq_flush+0x4c3/0x3e20 net/sctp/outqueue.c:1212 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x59cc/0x60c0 net/sctp/sm_sideeffect.c:1169 sctp_primitive_ASSOCIATE+0x95/0xc0 net/sctp/primitive.c:73 sctp_sendmsg_to_asoc+0xfa5/0x1800 net/sctp/socket.c:1841 sctp_sendmsg+0x1bc3/0x3520 net/sctp/socket.c:2031 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2a93a7cf69 RSP: 002b:00007f2a948df0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f2a93bb3f80 RCX: 00007f2a93a7cf69 RDX: 0000000000000001 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00007f2a93ada6fe R08: 00000000200000c0 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f2a93bb3f80 R15: 00007f2a93cdfaa8 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:0c, vlan:0) net_ratelimit: 39934 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: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)