bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:12:a5:9e:85:05, 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): P9522/2:b..l rcu: (detected by 0, t=10502 jiffies, g=44341, q=512 ncpus=1) task:syz.2.724 state:R running task stack:26792 pid:9522 tgid:9510 ppid:5835 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0xfee/0x6120 kernel/sched/core.c:6908 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7235 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:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: c6 ff 59 00 48 89 df 5b e9 1d 78 5f 00 be 03 00 00 00 5b e9 a2 83 eb 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 85 20 05 12 48 8b 34 24 65 48 8b 15 61 20 05 RSP: 0018:ffffc90004eff4f0 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffff88805ea8b740 RCX: ffffffff899e925c RDX: 00000000000002e9 RSI: 00000000000002e9 RDI: ffff88802616bd00 RBP: 00000000000002e9 R08: 0000000000000004 R09: 00000000000002e9 R10: 00000000000002e9 R11: 0000000000000000 R12: 00000000000002e9 R13: dffffc0000000000 R14: ffff88805ea8b000 R15: ffff888020af1a80 read_pnet include/net/net_namespace.h:419 [inline] netlink_compare net/netlink/af_netlink.c:481 [inline] __rhashtable_lookup include/linux/rhashtable.h:639 [inline] rhashtable_lookup include/linux/rhashtable.h:677 [inline] rhashtable_lookup_fast include/linux/rhashtable.h:715 [inline] __netlink_lookup+0x59f/0x900 net/netlink/af_netlink.c:498 netlink_lookup+0x78/0x270 net/netlink/af_netlink.c:518 netlink_getsockbyportid net/netlink/af_netlink.c:1141 [inline] netlink_unicast+0x261/0x870 net/netlink/af_netlink.c:1338 nlmsg_unicast include/net/netlink.h:1198 [inline] genlmsg_unicast include/net/genetlink.h:553 [inline] genlmsg_reply include/net/genetlink.h:563 [inline] ctrl_getfamily+0x417/0x550 net/netlink/genetlink.c:1472 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] __sys_sendto+0x468/0x4b0 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: 0033:0x7f2976f5cfce RSP: 002b:00007f2977dfee88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f2977e006c0 RCX: 00007f2976f5cfce RDX: 0000000000000020 RSI: 00007f2977dff000 RDI: 0000000000000008 RBP: 0000000000000000 R08: 00007f2977dfef04 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 00007f2977dfef58 R14: 00007f2977dff000 R15: 0000000000000000 net_ratelimit: 8625 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:7e:12:a5:9e:85:05, 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:7e:12:a5:9e:85:05, 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:7e:12:a5:9e:85:05, vlan:0) net_ratelimit: 8942 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:7e:12:a5:9e:85:05, 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:7e:12:a5:9e:85:05, 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:7e:12:a5:9e:85:05, vlan:0)