bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:60:84:46:b4:3a, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7957/2:b..l rcu: (detected by 0, t=10503 jiffies, g=29133, q=2138 ncpus=2) task:syz.0.555 state:R running task stack:24392 pid:7957 tgid:7957 ppid:5835 task_flags:0x2040044c flags:0x00080003 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6911 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7238 irqentry_exit+0x599/0x620 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:memset_orig+0x75/0xb0 arch/x86/lib/memset_64.S:92 Code: 89 47 30 48 89 47 38 48 8d 7f 40 75 d8 0f 1f 84 00 00 00 00 00 89 d1 83 e1 38 74 14 c1 e9 03 66 0f 1f 44 00 00 ff c9 48 89 07 <48> 8d 7f 08 75 f5 83 e2 07 74 0a ff ca 88 07 48 8d 7f 01 75 f6 4c RSP: 0018:ffffc9000d32e750 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc9000d32e860 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc9000d32e880 RBP: dffffc0000000000 R08: ffffc9000d32e887 R09: 0000000000000000 R10: ffffc9000d32e878 R11: fffff52001a65d11 R12: ffffc9000d32e878 R13: 1ffff92001a65d07 R14: ffffc9000d32e828 R15: ffffc9000d32e870 unwind_next_frame+0xeae/0x23c0 arch/x86/kernel/unwind_orc.c:607 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_noprof+0x31c/0x660 mm/slub.c:5380 kmalloc_noprof include/linux/slab.h:950 [inline] slab_free_hook mm/slub.c:2637 [inline] slab_free mm/slub.c:6165 [inline] kmem_cache_free+0x15b/0x630 mm/slub.c:6295 mempool_free+0xec/0x130 mm/mempool.c:711 blk_update_request+0x57e/0xe60 block/blk-mq.c:1016 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1178 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+0xbfe/0xe30 drivers/block/null_blk/main.c:1703 null_queue_rqs+0x123/0x270 drivers/block/null_blk/main.c:1717 __blk_mq_flush_list block/blk-mq.c:2858 [inline] blk_mq_dispatch_queue_requests+0x417/0x800 block/blk-mq.c:2903 blk_mq_flush_plug_list+0x456/0x570 block/blk-mq.c:2991 blk_add_rq_to_plug+0x175/0x450 block/blk-mq.c:1417 blk_mq_submit_bio+0xef8/0x2810 block/blk-mq.c:3243 __submit_bio+0x1c0/0x580 block/blk-core.c:635 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x2f4/0xa70 block/blk-core.c:753 __block_write_full_folio+0x810/0xe10 fs/buffer.c:1930 blkdev_writepages+0xef/0x1b0 block/fops.c:486 do_writepages+0x32e/0x550 mm/page-writeback.c:2554 filemap_writeback mm/filemap.c:387 [inline] filemap_fdatawrite_range mm/filemap.c:412 [inline] filemap_write_and_wait_range+0x335/0x3f0 mm/filemap.c:684 filemap_write_and_wait include/linux/pagemap.h:65 [inline] sync_blockdev block/bdev.c:276 [inline] bdev_release+0x192/0x650 block/bdev.c:1142 blkdev_release+0x15/0x20 block/fops.c:705 __fput+0x44f/0xa70 fs/file_table.c:469 task_work_run+0x1d9/0x270 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x70f/0x23c0 kernel/exit.c:976 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118 get_signal+0x1284/0x1330 kernel/signal.c:3034 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop kernel/entry/common.c:98 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline] irqentry_exit+0x176/0x620 kernel/entry/common.c:219 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0033:0x7ff8dfe6cd02 RSP: 002b:00007ff8e033f8c0 EFLAGS: 00000202 RAX: 00007ff8df8ed030 RBX: 00007ff8df8ecec8 RCX: ffffffff823c4bf0 RDX: ffffffff823c4bf0 RSI: 00007ff8df8ed030 RDI: 00007ff8df8ece68 RBP: 00007ff8df8ec950 R08: 00007ff8e0200000 R09: 00007ff8e0216128 R10: 0000000000000007 R11: 0000000000000017 R12: 00007ff8df8ed388 R13: 0000000000000015 R14: 0000000000000147 R15: 0000000000000007 bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:60:84:46:b4:3a, 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:96:60:84:46:b4:3a, 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:96:60:84:46:b4:3a, vlan:0) net_ratelimit: 21389 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:60:84:46:b4:3a, 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:96:60:84:46:b4:3a, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)