bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P10281/1:b..l rcu: (detected by 1, t=10502 jiffies, g=42661, q=789 ncpus=2) task:syz-executor state:R running task stack:24488 pid:10281 tgid:10281 ppid:10269 task_flags:0x400140 flags:0x00080001 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x1190/0x5de0 kernel/sched/core.c:6929 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256 irqentry_exit+0x36/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:rcu_is_watching+0x5/0xc0 kernel/rcu/tree.c:747 Code: e6 34 03 e9 51 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <53> 65 ff 05 43 ee ff 11 e8 2e 39 bc 09 48 c7 c3 a8 62 a2 93 89 c5 RSP: 0018:ffffc90019e06b60 EFLAGS: 00000297 RAX: 0000000000000000 RBX: ffffffff8e3c45a0 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e3c45a0 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000a1117 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x2cd/0x350 kernel/locking/lockdep.c:5831 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] class_rcu_constructor include/linux/rcupdate.h:1195 [inline] unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56 kasan_save_track+0x14/0x30 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4978 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_noprof+0x250/0x6e0 mm/slub.c:5295 __kernfs_new_node+0xd2/0x8e0 fs/kernfs/dir.c:637 kernfs_new_node+0x13c/0x1e0 fs/kernfs/dir.c:713 __kernfs_create_file+0x53/0x350 fs/kernfs/file.c:1057 sysfs_add_file_mode_ns+0x207/0x3c0 fs/sysfs/file.c:313 create_files fs/sysfs/group.c:76 [inline] internal_create_group+0x578/0xf30 fs/sysfs/group.c:183 internal_create_groups+0x9d/0x150 fs/sysfs/group.c:223 device_add_groups drivers/base/core.c:2836 [inline] device_add_attrs drivers/base/core.c:2911 [inline] device_add+0xf30/0x1aa0 drivers/base/core.c:3643 netdev_register_kobject+0x1a9/0x3d0 net/core/net-sysfs.c:2358 register_netdevice+0x13dc/0x2270 net/core/dev.c:11294 ipcaif_newlink+0x73/0x2c0 net/caif/chnl_net.c:452 rtnl_newlink_create net/core/rtnetlink.c:3833 [inline] __rtnl_newlink net/core/rtnetlink.c:3950 [inline] rtnl_newlink+0xc45/0x2000 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6951 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] __sys_sendto+0x4a3/0x520 net/socket.c:2244 __do_sys_sendto net/socket.c:2251 [inline] __se_sys_sendto net/socket.c:2247 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2247 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4d54d9155c RSP: 002b:00007ffe2b5cc6e0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f4d55b14620 RCX: 00007f4d54d9155c RDX: 0000000000000038 RSI: 00007f4d55b14670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe2b5cc734 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f4d55b14670 R15: 0000000000000000 bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) net_ratelimit: 6784 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ed:4d:dd:6b:88, vlan:0)