bridge0: received packet on veth0_to_bridge with own address as source address (addr:0e:8a:1a:84:58:58, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P18268/2:b..l rcu: (detected by 1, t=10503 jiffies, g=103869, q=3952 ncpus=2) task:syz.0.2502 state:R running task stack:24248 pid:18268 tgid:18267 ppid:17703 task_flags:0x2040054c flags:0x00080001 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x1190/0x5de0 kernel/sched/core.c:6929 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256 irqentry_exit+0x36/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__orc_find+0xa2/0xf0 arch/x86/kernel/unwind_orc.c:109 Code: 03 40 38 f2 7c 05 40 84 f6 75 4b 48 63 13 48 01 da 49 39 d5 73 af 4c 8d 63 fc 49 39 ec 73 b2 4d 29 f7 49 c1 ff 02 4b 8d 14 7f <48> 8d 04 50 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d7 bd f4 RSP: 0018:ffffc90003856658 EFLAGS: 00000246 RAX: ffffffff914e2026 RBX: ffffffff90b8a820 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff90b8a820 RBP: ffffffff90b8a824 R08: ffffffff914e202c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000038145 R12: ffffffff90b8a820 R13: ffffffff848145fd R14: ffffffff90b8a820 R15: 0000000000000000 orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x2ec/0x20a0 arch/x86/kernel/unwind_orc.c:494 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:342 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4978 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_noprof+0x250/0x6e0 mm/slub.c:5295 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+0x23f/0x520 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:3108 slab_free_hook mm/slub.c:2507 [inline] slab_free mm/slub.c:6638 [inline] kmem_cache_free+0x171/0x6c0 mm/slub.c:6748 mempool_free+0x102/0x750 mm/mempool.c:576 bio_put_percpu_cache block/bio.c:805 [inline] bio_put+0x355/0x5b0 block/bio.c:824 bio_endio+0x713/0x860 block/bio.c:1672 blk_update_request+0x93e/0x15f0 block/blk-mq.c:998 blk_mq_end_request+0x4f/0x90 block/blk-mq.c:1160 blk_mq_complete_request block/blk-mq.c:1338 [inline] blk_mq_complete_request+0x8b/0xb0 block/blk-mq.c:1335 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:2837 [inline] __blk_mq_flush_list+0x9a/0xc0 block/blk-mq.c:2833 blk_mq_dispatch_queue_requests+0x184/0x7b0 block/blk-mq.c:2882 blk_mq_flush_plug_list+0x1f2/0x600 block/blk-mq.c:2970 blk_add_rq_to_plug+0x1ca/0x540 block/blk-mq.c:1399 blk_mq_submit_bio+0x1ecc/0x3380 block/blk-mq.c:3222 __submit_bio+0x3cf/0x690 block/blk-core.c:637 __submit_bio_noacct_mq block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x53d/0xc10 block/blk-core.c:755 submit_bio_noacct+0x5bd/0x1f60 block/blk-core.c:879 __block_write_full_folio+0x735/0xe00 fs/buffer.c:1933 block_write_full_folio+0x341/0x400 fs/buffer.c:2753 blkdev_writepages+0xb8/0x140 block/fops.c:491 do_writepages+0x27a/0x600 mm/page-writeback.c:2604 filemap_fdatawrite_wbc mm/filemap.c:389 [inline] filemap_fdatawrite_wbc+0x104/0x160 mm/filemap.c:379 __filemap_fdatawrite_range+0xb9/0x100 mm/filemap.c:422 filemap_write_and_wait_range mm/filemap.c:694 [inline] filemap_write_and_wait_range+0xa3/0x130 mm/filemap.c:685 filemap_write_and_wait include/linux/pagemap.h:68 [inline] sync_blockdev block/bdev.c:260 [inline] sync_blockdev block/bdev.c:256 [inline] bdev_release+0x4d3/0x6d0 block/bdev.c:1126 blkdev_release+0x15/0x20 block/fops.c:709 __fput+0x402/0xb70 fs/file_table.c:468 task_work_run+0x150/0x240 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x86f/0x2bf0 kernel/exit.c:966 do_group_exit+0xd3/0x2a0 kernel/exit.c:1107 get_signal+0x2671/0x26d0 kernel/signal.c:3034 arch_do_signal_or_restart+0x8f/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x85/0x130 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x426/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff8c478f6c9 RSP: 002b:00007ff8c56dd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: 000000000096d000 RBX: 00007ff8c49e5fa0 RCX: 00007ff8c478f6c9 RDX: 000000100000a3d9 RSI: 0000200000000400 RDI: 0000000000000005 RBP: 00007ff8c4811f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff8c49e6038 R14: 00007ff8c49e5fa0 R15: 00007ffc1c828d48 net_ratelimit: 13308 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:0e:8a:1a:84:58:58, 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:0e:8a:1a:84:58:58, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6a:6d:98:10:34:b4, vlan:0) net_ratelimit: 15175 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:1b, 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:0e:8a:1a:84:58:58, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)