bridge0: received packet on bridge_slave_1 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): P24017/1:b..l rcu: (detected by 0, t=10503 jiffies, g=111393, q=2100 ncpus=2) task:syz.2.4534 state:R running task stack:27816 pid:24017 tgid:24007 ppid:18611 task_flags:0x400040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5533 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7284 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x14f/0x910 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:114 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:128 [inline] RIP: 0010:lock_acquire+0xb9/0x350 kernel/locking/lockdep.c:5938 Code: f2 11 85 c0 0f 85 d5 00 00 00 65 48 8b 2d c7 28 f2 11 83 bd a4 0b 00 00 00 0f 85 c0 00 00 00 48 89 5c 24 08 4c 89 fb 9c 41 5f 48 c7 c7 7d 05 43 8e e8 fa 4b 43 0a 65 ff 05 4b 6d f2 11 45 31 RSP: 0018:ffffc900047f72e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 8000000000000001 RDX: 0000000000000000 RSI: ffffffff8177f1fc RDI: 1ffffffff1dab924 RBP: ffff888033998000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc900047f7478 R11: ffffffff81b293f0 R12: ffffffff8ed5c920 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] class_rcu_constructor include/linux/rcupdate.h:1216 [inline] unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 save_stack+0x122/0x230 mm/page_owner.c:183 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:338 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962 __slab_free+0x274/0x2c0 mm/slub.c:5823 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_noprof+0x321/0x600 mm/slub.c:5563 _kmalloc_noprof include/linux/slab.h:991 [inline] _kzalloc_noprof include/linux/slab.h:1312 [inline] sctp_association_new+0x89/0x25d0 net/sctp/associola.c:292 sctp_connect_new_asoc+0x2e4/0x6b0 net/sctp/socket.c:1092 __sctp_connect+0x5cb/0xdc0 net/sctp/socket.c:1198 sctp_getsockopt_connectx3+0x227/0x360 net/sctp/socket.c:1422 sctp_getsockopt+0x984/0xb90 net/sctp/socket.c:8200 do_sock_getsockopt+0x51d/0x7e0 net/socket.c:2503 __sys_getsockopt net/socket.c:2534 [inline] __do_sys_getsockopt net/socket.c:2541 [inline] __se_sys_getsockopt net/socket.c:2538 [inline] __x64_sys_getsockopt+0x1a4/0x240 net/socket.c:2538 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4ce479e159 RSP: 002b:00007f4ce5632028 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007f4ce4a26630 RCX: 00007f4ce479e159 RDX: 000000000000006f RSI: 0000000000000084 RDI: 000000000000008d RBP: 00007f4ce483506b R08: 0000200000000180 R09: 0000000000000000 R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4ce4a266c8 R14: 00007f4ce4a26630 R15: 00007ffc61930fb8 net_ratelimit: 19765 callbacks suppressed bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:da:d3:53:13:8a:a3, vlan:0)