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): P6877/1:b..l rcu: (detected by 0, t=10503 jiffies, g=15685, q=2264 ncpus=2) task:syz.0.210 state:R running task stack:25416 pid:6877 tgid:6872 ppid:5822 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0xfee/0x6120 kernel/sched/core.c:6908 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7235 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:deref_stack_reg arch/x86/kernel/unwind_orc.c:422 [inline] RIP: 0010:unwind_next_frame+0xb38/0x1ea0 arch/x86/kernel/unwind_orc.c:600 Code: 84 39 f8 ff ff 48 8b 7c 24 28 e8 e3 ec ff ff 48 89 ee 48 8b 4c 24 20 48 ba 00 00 00 00 00 fc ff df 48 c1 ee 03 4c 8b 44 24 18 <80> 3c 16 00 0f 85 3c 0f 00 00 48 8b 14 24 49 89 45 48 48 b8 00 00 RSP: 0018:ffffc900035b7298 EFLAGS: 00000a06 RAX: ffffffff827ec5e4 RBX: 0000000000000001 RCX: ffffffff9187c658 RDX: dffffc0000000000 RSI: 1ffff920006b6e6a RDI: ffffc900035b7548 RBP: ffffc900035b7350 R08: ffffffff9187c65c R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000017e98 R12: ffffc900035b7358 R13: ffffc900035b7308 R14: ffffc900035b7550 R15: ffffc900035b733c 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_frozen_pages+0x7e1/0x10d0 mm/page_alloc.c:2978 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x47/0xe0 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4515 [inline] slab_alloc_node mm/slub.c:4844 [inline] kmem_cache_alloc_noprof+0x241/0x6e0 mm/slub.c:4851 ptlock_alloc+0x1f/0x70 mm/memory.c:7456 ptlock_init include/linux/mm.h:3494 [inline] pagetable_pte_ctor include/linux/mm.h:3548 [inline] __pte_alloc_one_noprof include/asm-generic/pgalloc.h:79 [inline] pte_alloc_one+0x84/0x3e0 arch/x86/mm/pgtable.c:18 __pte_alloc+0x6d/0x3f0 mm/memory.c:466 do_anonymous_page+0x13cc/0x1fb0 mm/memory.c:5233 do_pte_missing mm/memory.c:4475 [inline] handle_pte_fault mm/memory.c:6316 [inline] __handle_mm_fault+0x1d42/0x2b60 mm/memory.c:6454 handle_mm_fault+0x36d/0xa20 mm/memory.c:6623 faultin_page mm/gup.c:1126 [inline] __get_user_pages+0xf9c/0x34d0 mm/gup.c:1428 populate_vma_page_range+0x267/0x3f0 mm/gup.c:1860 __mm_populate+0x107/0x3a0 mm/gup.c:1963 mm_populate include/linux/mm.h:3899 [inline] vm_mmap_pgoff+0x37f/0x470 mm/util.c:586 ksys_mmap_pgoff+0xe1/0x650 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: 0033:0x7f481719c799 RSP: 002b:00007f4817fb1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f4817415fa0 RCX: 00007f481719c799 RDX: 00000000000000e2 RSI: 0000000000400005 RDI: 0000000000000000 RBP: 00007f4817232bd9 R08: 0000000000000002 R09: 0000000000008000 R10: 0000000000009b72 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4817416038 R14: 00007f4817415fa0 R15: 00007ffe565141e8 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: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: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 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: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:aa:aa:aa:aa:aa:0c, vlan:0)