syzbot

bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5845/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=95897, q=680 ncpus=1)
task:syz-executor    state:R  running task     stack:23144 pid:5845  tgid:5845  ppid:5838   task_flags:0x400140 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5351 [inline]
 __schedule+0x118d/0x5df0 kernel/sched/core.c:6954
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7281
 irqentry_exit+0x36/0x90 kernel/entry/common.c:196
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__kasan_check_byte+0x13/0x50 mm/kasan/common.c:556
Code: 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 41 54 49 89 f4 55 48 89 fd 53 e8 6d 24 00 00 <89> c3 84 c0 74 0b 89 d8 5b 5d 41 5c e9 4c 64 6a 09 4c 89 e1 48 89
RSP: 0018:ffffc9000400f470 EFLAGS: 00000297
RAX: 0000000000000001 RBX: ffffffff8e5c38a0 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff816aaba1 RDI: fffffbfff1cb8714
RBP: ffffffff8e5c38a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000011ff7 R12: ffffffff816aaba1
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire kernel/locking/lockdep.c:5842 [inline]
 lock_acquire+0xfc/0x350 kernel/locking/lockdep.c:5825
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:841 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1155 [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:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4179 [inline]
 slab_alloc_node mm/slub.c:4228 [inline]
 kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4235
 vm_area_dup+0x27/0x8d0 mm/vma_init.c:122
 dup_mmap+0x877/0x21d0 mm/mmap.c:1784
 dup_mm kernel/fork.c:1481 [inline]
 copy_mm kernel/fork.c:1533 [inline]
 copy_process+0x4081/0x7690 kernel/fork.c:2172
 kernel_clone+0xfc/0x930 kernel/fork.c:2602
 __do_sys_clone+0xce/0x120 kernel/fork.c:2745
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f97f9585213
RSP: 002b:00007ffda1a25d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f97f9585213
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055556413c7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 00000000000ada6a R15: 00007ffda1a25ef0
 </TASK>
net_ratelimit: 13103 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
net_ratelimit: 15696 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:f9:de:f2:51:55, vlan:0)