bridge0: received packet on bridge_slave_0 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): P3844/1:b..l rcu: (detected by 1, t=10503 jiffies, g=259893, q=6310 ncpus=2) task:syz.6.5538 state:R running task stack:23128 pid:3844 tgid:3843 ppid:17694 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5504 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 89 fb e8 23 00 00 00 48 8b 3d 64 af 63 0c 48 89 de 5b e9 03 0c 62 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0d 08 ff 78 11 65 8b 15 29 ff 78 RSP: 0018:ffffc90004f7e878 EFLAGS: 00000246 RAX: ffffffff8a845596 RBX: 0000000000000000 RCX: 0000000000000002 RDX: ffff88807fd5be00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004f7e998 R08: 0000000000000000 R09: 0000000000000000 R10: ffff8880312b29bc R11: ffffed1006256537 R12: ffff8880312b29b8 R13: ffff88805ac9e140 R14: 1ffff920009efd1c R15: 0000000000000004 rcu_read_lock include/linux/rcupdate.h:841 [inline] br_fill_ifinfo+0x9bc/0x15a0 net/bridge/br_netlink.c:528 br_info_notify+0x129/0x280 net/bridge/br_netlink.c:657 br_device_event+0x8d5/0x9c0 net/bridge/br.c:152 notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85 netif_state_change+0x27d/0x3a0 net/core/dev.c:1603 do_setlink+0x3c57/0x4670 net/core/rtnetlink.c:3454 rtnl_group_changelink net/core/rtnetlink.c:3855 [inline] __rtnl_newlink net/core/rtnetlink.c:4023 [inline] rtnl_newlink+0x148e/0x1bd0 net/core/rtnetlink.c:4151 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7068 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2684 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738 __sys_sendmsg net/socket.c:2770 [inline] __do_sys_sendmsg net/socket.c:2775 [inline] __se_sys_sendmsg net/socket.c:2773 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f69afd9ce59 RSP: 002b:00007f69b0c44028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f69b0015fa0 RCX: 00007f69afd9ce59 RDX: 00000000000100d0 RSI: 0000200000000200 RDI: 0000000000000004 RBP: 00007f69afe32e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f69b0016038 R14: 00007f69b0015fa0 R15: 00007f69b013fa48 net_ratelimit: 26682 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 veth0_to_bridge with own address as source address (addr:aa:7a:db:af:f6:2b, 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) net_ratelimit: 31404 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 veth0_to_bridge with own address as source address (addr:aa:7a:db:af:f6:2b, 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)