bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8519/1:b..l rcu: (detected by 1, t=10502 jiffies, g=33961, q=660 ncpus=2) task:syz.1.671 state:R running task stack:25080 pid:8519 tgid:8515 ppid:5849 task_flags:0x40044c flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5392 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6781 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7104 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5875 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 5b 84 fd 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc9001c356ad8 EFLAGS: 00000206 RAX: f2d4e12a9d6f2c00 RBX: 0000000000000000 RCX: f2d4e12a9d6f2c00 RDX: 0000000000000000 RSI: ffffffff8db5b6be RDI: ffffffff8be266c0 RBP: ffffffff81727c05 R08: 0000000000000000 R09: ffffffff81727c05 R10: ffffc9001c356c98 R11: ffffffff81acdf80 R12: 0000000000000002 R13: ffffffff8e13ccc0 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 save_stack+0xf5/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1254 [inline] free_unref_folios+0xcc9/0x1550 mm/page_alloc.c:2774 folios_put_refs+0x559/0x640 mm/swap.c:992 free_pages_and_swap_cache+0x277/0x520 mm/swap_state.c:266 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline] tlb_batch_pages_flush mm/mmu_gather.c:149 [inline] tlb_flush_mmu_free mm/mmu_gather.c:397 [inline] tlb_flush_mmu+0x3a0/0x680 mm/mmu_gather.c:404 zap_pte_range mm/memory.c:1770 [inline] zap_pmd_range mm/memory.c:1823 [inline] zap_pud_range mm/memory.c:1852 [inline] zap_p4d_range mm/memory.c:1873 [inline] unmap_page_range+0x398e/0x4580 mm/memory.c:1894 unmap_vmas+0x25d/0x3c0 mm/memory.c:1984 exit_mmap+0x245/0xba0 mm/mmap.c:1284 __mmput+0x118/0x420 kernel/fork.c:1381 exit_mm+0x1da/0x2c0 kernel/exit.c:595 do_exit+0x864/0x2550 kernel/exit.c:947 do_group_exit+0x21c/0x2d0 kernel/exit.c:1108 get_signal+0x1286/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbcc6d8e969 RSP: 002b:00007fbcc7bc5038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: 0000000000010106 RBX: 00007fbcc6fb6080 RCX: 00007fbcc6d8e969 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007fbcc6e10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbcc6fb6080 R15: 00007fbcc70dfa28 net_ratelimit: 14006 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) net_ratelimit: 17614 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:83:b1:63:ba:f6, vlan:0)