bridge0: received packet on bridge_slave_0 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): P5946/1:b..l rcu: (detected by 1, t=10503 jiffies, g=8973, q=2395 ncpus=2) task:syz.3.8 state:R running task stack:26024 pid:5946 tgid:5937 ppid:5800 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0xfee/0x60e0 kernel/sched/core.c:6907 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7234 irqentry_exit+0x17b/0x670 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_release+0x19e/0x320 kernel/locking/lockdep.c:5893 Code: ff 65 0f c1 05 0b f8 28 12 83 f8 01 0f 85 3d 01 00 00 9c 58 f6 c4 02 0f 85 28 01 00 00 41 f7 c6 00 02 00 00 0f 85 de 00 00 00 <48> 8b 44 24 10 65 48 2b 05 5d b0 28 12 0f 85 63 01 00 00 48 83 c4 RSP: 0018:ffffc90003f76d50 EFLAGS: 00000206 RAX: 0000000000000046 RBX: ffffffff8e7e93e0 RCX: ffffc90003f76d5c RDX: 0000000000000001 RSI: ffffffff8de4bd95 RDI: ffffffff8c1aefa0 RBP: ffffffff81b7fdde R08: 0000000000000001 R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000015cac R12: ffff88802dfdc900 R13: ffffc90003f76e08 R14: 0000000000000202 R15: 0000000000000002 rcu_lock_release include/linux/rcupdate.h:322 [inline] rcu_read_unlock include/linux/rcupdate.h:881 [inline] class_rcu_destructor include/linux/rcupdate.h:1193 [inline] unwind_next_frame+0x3c3/0x1ea0 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 save_stack+0x162/0x1e0 mm/page_owner.c:165 __reset_page_owner+0x84/0x190 mm/page_owner.c:320 reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] free_unref_folios+0xaea/0x1790 mm/page_alloc.c:3040 folios_put_refs+0x53c/0x840 mm/swap.c:1002 free_pages_and_swap_cache+0x242/0x480 mm/swap_state.c:423 __tlb_batch_free_encoded_pages+0xe9/0x280 mm/mmu_gather.c:138 tlb_batch_pages_flush mm/mmu_gather.c:151 [inline] tlb_flush_mmu_free mm/mmu_gather.c:398 [inline] tlb_flush_mmu mm/mmu_gather.c:405 [inline] tlb_finish_mmu+0x1b0/0x810 mm/mmu_gather.c:530 unmap_region+0x2d9/0x3b0 mm/vma.c:488 vms_clear_ptes mm/vma.c:1284 [inline] vms_clean_up_area mm/vma.c:1296 [inline] __mmap_setup mm/vma.c:2448 [inline] __mmap_region+0x19ac/0x29e0 mm/vma.c:2741 mmap_region+0x30a/0x3e0 mm/vma.c:2837 do_mmap+0xc63/0x12f0 mm/mmap.c:559 vm_mmap_pgoff+0x29e/0x470 mm/util.c:581 ksys_mmap_pgoff+0x273/0x650 mm/mmap.c:605 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fefe2f9c629 RSP: 002b:00007fefe3e85028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fefe3216270 RCX: 00007fefe2f9c629 RDX: 0000000001000002 RSI: 0000000000ff5000 RDI: 0000200000000000 RBP: 00007fefe3032b39 R08: ffffffffffffffff R09: 0000000000000000 R10: 000200000005c831 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fefe3216308 R14: 00007fefe3216270 R15: 00007ffd18aca6c8 net_ratelimit: 22911 callbacks suppressed 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:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:61:da:cd:30:f4, 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:e6:61:da:cd:30:f4, vlan:0) net_ratelimit: 22728 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 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:e6:61:da:cd:30:f4, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)