syzbot

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:e6:45:f8:83:1b:6b, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P10687/2:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=52885, q=1816 ncpus=1)
task:syz.4.943       state:R  running task     stack:23720 pid:10687 tgid:10687 ppid:9650   task_flags:0x20400040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5260 [inline]
 __schedule+0xfe4/0x5e10 kernel/sched/core.c:6867
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7194
 irqentry_exit+0x17b/0x670 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x50/0x330 kernel/locking/lockdep.c:5833
Code: 01 12 4c 89 7c 24 30 4d 89 cf 66 90 65 8b 05 7b 49 01 12 83 f8 07 0f 87 a4 02 00 00 48 0f a3 05 06 e9 d4 0e 0f 82 6f 02 00 00 <8b> 35 de 1b d5 0e 85 f6 0f 85 8a 00 00 00 48 8b 44 24 30 65 48 2b
RSP: 0018:ffffc9000213eb30 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8bfa32a0 RDI: ffffffff8dee9f20
RBP: ffffffff8e5e3120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000200 R11: 0000000000013dbe R12: 0000000000000002
R13: 0000000000000000 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+0xd1/0x1ea0 arch/x86/kernel/unwind_orc.c:495
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kmalloc_noprof include/linux/slab.h:957 [inline]
 slab_free_hook mm/slub.c:2492 [inline]
 slab_free mm/slub.c:6674 [inline]
 kmem_cache_free+0x463/0x720 mm/slub.c:6785
 mempool_free+0xde/0x130 mm/mempool.c:712
 bio_put_percpu_cache block/bio.c:808 [inline]
 bio_put+0x34f/0x5b0 block/bio.c:827
 bio_endio+0x755/0x8b0 block/bio.c:1675
 blk_update_request+0x741/0x1330 block/blk-mq.c:1007
 blk_mq_end_request+0x5b/0x420 block/blk-mq.c:1169
 blk_mq_complete_request block/blk-mq.c:1347 [inline]
 blk_mq_complete_request+0x8b/0xb0 block/blk-mq.c:1344
 nullb_complete_cmd drivers/block/null_blk/main.c:1412 [inline]
 null_handle_cmd drivers/block/null_blk/main.c:1464 [inline]
 null_queue_rq+0xb48/0xfb0 drivers/block/null_blk/main.c:1703
 null_queue_rqs+0xe9/0x2f0 drivers/block/null_blk/main.c:1717
 __blk_mq_flush_list block/blk-mq.c:2848 [inline]
 __blk_mq_flush_list+0x9a/0xc0 block/blk-mq.c:2844
 blk_mq_dispatch_queue_requests+0x184/0x7c0 block/blk-mq.c:2893
 blk_mq_flush_plug_list+0x1f2/0x600 block/blk-mq.c:2981
 blk_add_rq_to_plug+0x1ca/0x540 block/blk-mq.c:1408
 blk_mq_submit_bio+0x1b5e/0x2b60 block/blk-mq.c:3233
 __submit_bio+0x3f0/0x6c0 block/blk-core.c:637
 __submit_bio_noacct_mq block/blk-core.c:724 [inline]
 submit_bio_noacct_nocheck+0x50f/0xbb0 block/blk-core.c:755
 submit_bio_noacct+0xb5c/0x1e80 block/blk-core.c:879
 __block_write_full_folio+0x77f/0xee0 fs/buffer.c:1933
 block_write_full_folio+0x3b5/0x4e0 fs/buffer.c:2753
 blkdev_writepages+0xc7/0x150 block/fops.c:487
 do_writepages+0x278/0x600 mm/page-writeback.c:2598
 filemap_writeback+0x22d/0x2e0 mm/filemap.c:387
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 filemap_write_and_wait_range mm/filemap.c:684 [inline]
 filemap_write_and_wait_range+0xa6/0x130 mm/filemap.c:675
 filemap_write_and_wait include/linux/pagemap.h:65 [inline]
 sync_blockdev block/bdev.c:277 [inline]
 sync_blockdev block/bdev.c:273 [inline]
 bdev_release+0x4d3/0x6d0 block/bdev.c:1143
 blkdev_release+0x15/0x20 block/fops.c:706
 __fput+0x3ff/0xb40 fs/file_table.c:468
 task_work_run+0x150/0x240 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0x100/0x4b0 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+0x4ea/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3f4999aeb9
RSP: 002b:00007ffe2b8a2688 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f3f49c17da0 RCX: 00007f3f4999aeb9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f3f49c17da0 R08: 00007f3f49c16038 R09: 0000000000000000
R10: 000000000003fdb4 R11: 0000000000000246 R12: 00000000000621a2
R13: 00007f3f49c15fac R14: 0000000000061f01 R15: 00007ffe2b8a2790
 </TASK>
net_ratelimit: 6311 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:45:f8:83:1b:6b, 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 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 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:e6:45:f8:83:1b:6b, 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:e6:45:f8:83:1b:6b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 6699 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:45:f8:83:1b:6b, 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:e6:45:f8:83:1b:6b, 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 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 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:e6:45:f8:83:1b:6b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)