bridge0: received packet on veth0_to_bridge 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): P5922/1:b..l rcu: (detected by 0, t=10503 jiffies, g=9789, q=1160 ncpus=2) task:syz.4.7 state:R running task stack:26232 pid:5922 tgid:5920 ppid:5829 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x157c/0x52b0 kernel/sched/core.c:6907 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7234 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:rcu_lockdep_current_cpu_online+0xf1/0x120 kernel/rcu/tree.c:4050 Code: 83 00 4c 85 3b 75 1a 48 c7 c7 00 48 76 8e be 04 00 00 00 e8 71 ea 83 00 83 3d da 7c cc 0c 00 74 16 b0 01 65 ff 0d ff 34 6e 11 <74> 0f 5b 41 5e 41 5f c3 cc cc cc cc cc 31 c0 eb e8 e8 d9 df 89 ff RSP: 0018:ffffc900045af7d0 EFLAGS: 00000286 RAX: 1ffffffff1cec701 RBX: ffffffff8e763f70 RCX: 0000000080000001 RDX: ffffc9000cb62000 RSI: ffffffff8c2798e0 RDI: ffff8880b873bb68 RBP: dffffc0000000000 R08: ffffffff8239d69a R09: ffffffff8e75e3e0 R10: dffffc0000000000 R11: ffffed100b0a8626 R12: 000000000004e7fe R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000002 rcu_read_lock_held_common kernel/rcu/update.c:113 [inline] rcu_read_lock_held+0x1e/0x50 kernel/rcu/update.c:349 lookup_page_ext mm/page_ext.c:258 [inline] page_ext_lookup+0xe7/0x180 mm/page_ext.c:513 page_ext_iter_begin include/linux/page_ext.h:133 [inline] __page_table_check_zero+0x135/0x3e0 mm/page_table_check.c:139 page_table_check_free include/linux/page_table_check.h:46 [inline] free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc10/0xd80 mm/page_alloc.c:2972 __slab_free+0x263/0x2b0 mm/slub.c:5490 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4459 [inline] kmem_cache_alloc_bulk_noprof+0x570/0x7e0 mm/slub.c:7204 __io_alloc_req_refill+0xb4/0x360 io_uring/io_uring.c:965 io_alloc_req io_uring/io_uring.h:508 [inline] io_submit_sqes+0xf81/0x22f0 io_uring/io_uring.c:2032 __do_sys_io_uring_enter io_uring/io_uring.c:2603 [inline] __se_sys_io_uring_enter+0x2cc/0x18c0 io_uring/io_uring.c:2538 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc5caf9bf79 RSP: 002b:00007fc5cbd9d028 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007fc5cb215fa0 RCX: 00007fc5caf9bf79 RDX: 0000000000003e82 RSI: 00000000000047ba RDI: 0000000000000005 RBP: 00007fc5cb0327e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000060 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc5cb216038 R14: 00007fc5cb215fa0 R15: 00007fc5cb33fa48 net_ratelimit: 26279 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 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:0e:d6:f4:df:cf:c3, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)