bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6441/2:b..l rcu: (detected by 0, t=10503 jiffies, g=14089, q=4249 ncpus=2) task:syz.1.112 state:R running task stack:24344 pid:6441 tgid:6441 ppid:5825 task_flags:0x2040004c 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:unwind_next_frame+0x5e4/0x20a0 arch/x86/kernel/unwind_orc.c:515 Code: 14 00 00 45 88 7d 35 44 0f b6 71 04 41 83 e6 0f 41 80 fe 06 0f 84 27 0a 00 00 0f 87 20 02 00 00 41 80 fe 04 0f 84 c7 0b 00 00 <41> 80 fe 05 0f 85 cf 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffffc900187f6b68 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff9125d476 RDX: 0000000000000005 RSI: 0000000000000001 RDI: ffffffff909dcbb8 RBP: ffffc900187f6c20 R08: ffffffff9125d47a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000013688 R12: ffffc900187f6c28 R13: ffffc900187f6bd8 R14: 0000000000000005 R15: 0000000000000000 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 poison_kmalloc_redzone mm/kasan/common.c:400 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:417 kmalloc_noprof include/linux/slab.h:957 [inline] slab_free_hook mm/slub.c:2495 [inline] slab_free mm/slub.c:6642 [inline] kmem_cache_free+0x147/0x6c0 mm/slub.c:6752 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 __do_sys_exit_group kernel/exit.c:1118 [inline] __se_sys_exit_group kernel/exit.c:1116 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1116 x64_sys_call+0x150b/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcca1f8f6c9 RSP: 002b:00007ffef8473ac8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcca1f8f6c9 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffef8473b2c R08: 00000012f8473bbf R09: 00000000000927c0 R10: 0000000000000154 R11: 0000000000000246 R12: 000000000000001a R13: 00000000000927c0 R14: 000000000001cd54 R15: 00007ffef8473b80 bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) net_ratelimit: 16736 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7e:9e:2a:09:99:9e, vlan:0)