syzbot

bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4622/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=342453, q=1423 ncpus=2)
task:syz.7.8084      state:R  running task     stack:26816 pid:4622  tgid:4622  ppid:30409  task_flags:0x40044c flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5260 [inline]
 __schedule+0x14ef/0x4fb0 kernel/sched/core.c:6867
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7194
 irqentry_exit+0x597/0x620 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:121 [inline]
RIP: 0010:lock_acquire+0x98/0x330 kernel/locking/lockdep.c:5844
Code: 0f 84 d3 00 00 00 48 8b b4 24 90 00 00 00 4c 89 ef e8 4c 42 8a 00 83 3d 25 d8 2f 0e 00 0f 84 ce 00 00 00 65 8b 05 28 94 30 11 <85> c0 0f 85 bf 00 00 00 65 48 8b 05 70 4e 30 11 83 b8 2c 0b 00 00
RSP: 0018:ffffc9000c53f4b8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8174c102 RDI: 1ffffffff1c6b46c
RBP: ffffffff8174c0e5 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000c53f678 R11: ffffffff81ae5cd0 R12: 0000000000000002
R13: ffffffff8e35a360 R14: 0000000000000000 R15: 0000000000000000
 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+0xc2/0x23c0 arch/x86/kernel/unwind_orc.c:495
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:165
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1433 [inline]
 __free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2973
 vfree+0x25a/0x400 mm/vmalloc.c:3466
 kcov_put kernel/kcov.c:439 [inline]
 kcov_close+0x28/0x50 kernel/kcov.c:535
 __fput+0x44f/0xa70 fs/file_table.c:468
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x69b/0x2310 kernel/exit.c:971
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1112
 get_signal+0x1284/0x1330 kernel/signal.c:3034
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac39d5b58e
RSP: 002b:00007fac3acdaf58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fac3acdb6c0 RCX: 00007fac39d5b58e
RDX: 00007fac3acdafb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fac39e08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fac3a016218 R14: 00007fac3a016180 R15: 00007fac3a13fa48
 </TASK>
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:98:a3:88:63:42, vlan:0)