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) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14140/1:b..l rcu: (detected by 1, t=10502 jiffies, g=75101, q=1900 ncpus=1) task:syz.0.1566 state:R running task stack:24632 pid:14140 tgid:14139 ppid:5828 task_flags:0x20400140 flags:0x00080003 Call Trace: context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1139/0x6150 kernel/sched/core.c:6863 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7190 irqentry_exit+0x1d8/0x8c0 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:unwind_next_frame+0x1e/0x20b0 arch/x86/kernel/unwind_orc.c:485 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 48 89 fa 41 56 48 c1 ea 03 41 55 49 89 fd <41> 54 55 53 48 83 ec 38 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 02 0b RSP: 0018:ffffc9000b70e768 EFLAGS: 00000a02 RAX: dffffc0000000000 RBX: ffffc9000b70e788 RCX: ffffc9000b70e6dc RDX: 1ffff920016e1cf1 RSI: ffffffff82270534 RDI: ffffc9000b70e788 RBP: ffffc9000b70e818 R08: 0000000000000001 R09: 0000000097dd0d41 R10: 0000000000000002 R11: 0000000000012704 R12: ffffffff81a8e9d0 R13: ffffc9000b70e788 R14: 0000000000000000 R15: ffff888031450000 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:56 kasan_save_track+0x14/0x30 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:339 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:365 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x25e/0x770 mm/slub.c:5270 kmem_alloc_batch+0x49/0x170 lib/debugobjects.c:371 fill_pool lib/debugobjects.c:403 [inline] debug_objects_fill_pool lib/debugobjects.c:725 [inline] debug_objects_fill_pool+0x413/0x660 lib/debugobjects.c:697 debug_object_activate+0x10b/0x4c0 lib/debugobjects.c:814 debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline] __call_rcu_common.constprop.0+0x35/0xa10 kernel/rcu/tree.c:3104 slab_free_hook mm/slub.c:2504 [inline] slab_free mm/slub.c:6668 [inline] kmem_cache_free+0x171/0x770 mm/slub.c:6779 mempool_free+0xde/0x130 mm/mempool.c:712 bio_put_percpu_cache block/bio.c:808 [inline] bio_put+0x355/0x5b0 block/bio.c:827 bio_endio+0x751/0x8a0 block/bio.c:1675 blk_update_request+0x914/0x15c0 block/blk-mq.c:1007 blk_mq_end_request+0x59/0x430 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:1402 [inline] null_handle_cmd drivers/block/null_blk/main.c:1454 [inline] null_queue_rq+0xb69/0xfd0 drivers/block/null_blk/main.c:1693 null_queue_rqs+0xe9/0x2f0 drivers/block/null_blk/main.c:1707 __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+0x184/0x7b0 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+0x1a06/0x2c50 block/blk-mq.c:3233 __submit_bio+0x3cc/0x690 block/blk-core.c:637 __submit_bio_noacct_mq block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x53d/0xbe0 block/blk-core.c:755 submit_bio_noacct+0x5bd/0x1f40 block/blk-core.c:879 __block_write_full_folio+0x735/0xe00 fs/buffer.c:1933 block_write_full_folio+0x31d/0x3e0 fs/buffer.c:2753 blkdev_writepages+0xb8/0x140 block/fops.c:487 do_writepages+0x27a/0x600 mm/page-writeback.c:2598 filemap_writeback+0x225/0x2d0 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+0x402/0xb70 fs/file_table.c:468 task_work_run+0x150/0x240 kernel/task_work.c:233 get_signal+0x1d0/0x26d0 kernel/signal.c:2807 arch_do_signal_or_restart+0x8f/0x7a0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x8c/0x540 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+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd9bb98f7c9 RSP: 002b:00007fd9bc859038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: 0000000001000000 RBX: 00007fd9bbbe5fa0 RCX: 00007fd9bb98f7c9 RDX: 0000000080000000 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007fd9bba13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd9bbbe6038 R14: 00007fd9bbbe5fa0 R15: 00007fff78918938 net_ratelimit: 11966 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 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:1a:aa:46:74:af:11, 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:1a:aa:46:74:af:11, 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) net_ratelimit: 12674 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 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:1a:aa:46:74:af:11, 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:1a:aa:46:74:af:11, 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)