syzbot

bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:a2:e1:8c:2c:27, 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): P24941/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=207281, q=1393 ncpus=1)
task:syz.2.4421      state:R  running task     stack:26056 pid:24941 tgid:24939 ppid:16536  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5298 [inline]
 __schedule+0xfee/0x6120 kernel/sched/core.c:6911
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7238
 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_switch+0x4b/0x90 kernel/kcov.c:350
Code: 08 74 63 41 be 03 00 00 00 48 83 f8 10 75 29 4c 8b 6d 00 31 db 4d 85 ed 74 1e 48 8b 74 dd 10 48 8b 4c 24 28 4c 89 e2 4c 89 f7 <48> 83 c3 01 e8 8c fd ff ff 49 39 dd 75 e2 5b 5d 41 5c 41 5d 41 5e
RSP: 0018:ffffc90004d2f958 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff8b85bd9a
RDX: 0000000000000001 RSI: 0000000000000002 RDI: 0000000000000005
RBP: ffffffff8d28a820 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000004 R14: 0000000000000005 R15: 0000000002020fff
 ma_slots lib/maple_tree.c:708 [inline]
 mtree_lookup_walk lib/maple_tree.c:3332 [inline]
 mtree_load+0x53a/0xa40 lib/maple_tree.c:5901
 vma_lookup include/linux/mm.h:3959 [inline]
 __get_user_pages+0x7d4/0x34d0 mm/gup.c:1385
 __get_user_pages_locked mm/gup.c:1692 [inline]
 faultin_page_range+0x1f1/0x9e0 mm/gup.c:1912
 madvise_populate mm/madvise.c:974 [inline]
 madvise_do_behavior+0x354/0x510 mm/madvise.c:1933
 do_madvise+0x195/0x240 mm/madvise.c:2028
 __do_sys_madvise mm/madvise.c:2037 [inline]
 __se_sys_madvise mm/madvise.c:2035 [inline]
 __x64_sys_madvise+0xa9/0x110 mm/madvise.c:2035
 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: 0033:0x7f670d59c799
RSP: 002b:00007f670e462028 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f670d815fa0 RCX: 00007f670d59c799
RDX: 0000000000000017 RSI: ffffffffffff0005 RDI: 0000000000000000
RBP: 00007f670d632c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f670d816038 R14: 00007f670d815fa0 R15: 00007fff853da5f8
 </TASK>
net_ratelimit: 11131 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 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:9e:a2:e1:8c:2c:27, 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 veth0_to_bridge with own address as source address (addr:0a:53:5a:25:b3:b6, 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 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:9e:a2:e1:8c:2c:27, vlan:0)
net_ratelimit: 10413 callbacks suppressed
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:9e:a2:e1:8c:2c:27, 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 veth0_to_bridge with own address as source address (addr:0a:53:5a:25:b3:b6, 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 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:9e:a2:e1:8c:2c:27, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)