bridge0: received packet on veth1_to_bridge with own address as source address (addr:32:cf:10:0e:9d:53, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9535/1:b..l rcu: (detected by 0, t=10503 jiffies, g=35229, q=1882 ncpus=2) task:syz.4.938 state:R running task stack:23816 pid:9535 tgid:9519 ppid:5615 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5526 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7276 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x14f/0x910 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:81 [inline] RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:103 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline] RIP: 0010:unwind_next_frame+0x4f4/0x2550 arch/x86/kernel/unwind_orc.c:510 Code: 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 47 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 48 63 03 48 01 d8 48 8d 4b 04 48 39 e8 4c 0f 46 f9 48 RSP: 0018:ffffc90004ed64a0 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: ffffffff90f25c90 RCX: dffffc0000000000 RDX: ffffffff90f25c90 RSI: ffffffff91a08ab6 RDI: ffffffff8c6d9c20 RBP: ffffffff89f44e82 R08: 0000000000000001 R09: 0000000000000000 R10: ffffc90004ed6598 R11: ffffffff81b285f0 R12: ffffffff90f25c90 R13: ffffffff90f25c90 R14: ffffc90004ed6548 R15: ffffffff90f25c90 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 unpoison_slab_object mm/kasan/common.c:340 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4683 [inline] slab_alloc_node mm/slub.c:4996 [inline] kmem_cache_alloc_noprof+0x2b9/0x600 mm/slub.c:5010 __kernfs_new_node+0xe6/0x980 fs/kernfs/dir.c:665 kernfs_new_node+0xea/0x140 fs/kernfs/dir.c:751 __kernfs_create_file+0x4b/0x2e0 fs/kernfs/file.c:1050 sysfs_add_file_mode_ns+0x237/0x300 fs/sysfs/file.c:316 sysfs_merge_group+0x183/0x320 fs/sysfs/group.c:382 dpm_sysfs_add+0xd2/0x270 drivers/base/power/sysfs.c:704 device_add+0x4ca/0xb80 drivers/base/core.c:3721 netdev_register_kobject+0x197/0x350 net/core/net-sysfs.c:2340 register_netdevice+0x1433/0x1eb0 net/core/dev.c:11503 br_dev_newlink+0x6a/0x150 net/bridge/br_netlink.c:1602 rtnl_newlink_create+0x305/0x7b0 net/core/rtnetlink.c:3974 __rtnl_newlink net/core/rtnetlink.c:4103 [inline] rtnl_newlink+0x166d/0x1c30 net/core/rtnetlink.c:4220 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7137 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bd/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:800 __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2713 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767 __sys_sendmsg net/socket.c:2799 [inline] __do_sys_sendmsg net/socket.c:2804 [inline] __se_sys_sendmsg net/socket.c:2802 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8b7f99e159 RSP: 002b:00007f8b7db93028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8b7fc26270 RCX: 00007f8b7f99e159 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 000000000000000f RBP: 00007f8b7fa3503b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8b7fc26308 R14: 00007f8b7fc26270 R15: 00007ffda2a33d38