bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, 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=42161, q=653 ncpus=2) task:kworker/0:7 state:R running task stack:24952 pid:5946 tgid:5946 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: events nsim_fib_event_work Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x17b4/0x5680 kernel/sched/core.c:7183 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7507 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline] irqentry_exit+0x14f/0x730 kernel/entry/common.c:164 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_release+0x2d7/0x3c0 kernel/locking/lockdep.c:5893 Code: 4c 9c 11 00 00 00 00 eb b5 e8 15 6c 11 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 f5 06 9c 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 9a 5e 14 0a cc 48 8d 3d 72 c4 93 RSP: 0018:ffffc90004a67140 EFLAGS: 00000282 RAX: 9ebe9ebc6d40e800 RBX: 0000000000000202 RCX: 0000000000000046 RDX: 0000000000000004 RSI: ffffffff8e22a119 RDI: ffffffff8c27f000 RBP: ffff888028b849b0 R08: ffffc90004a67330 R09: 0000000000000000 R10: ffffc90004a672f8 R11: fffff5200094ce61 R12: 0000000000000004 R13: 0000000000000004 R14: ffffffff8e95d020 R15: ffff888028b83d80 rcu_lock_release include/linux/rcupdate.h:310 [inline] rcu_read_unlock include/linux/rcupdate.h:869 [inline] class_rcu_destructor include/linux/rcupdate.h:1181 [inline] unwind_next_frame+0x1bba/0x2550 arch/x86/kernel/unwind_orc.c:709 __unwind_start+0x5b8/0x760 arch/x86/kernel/unwind_orc.c:787 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 save_stack+0x122/0x230 mm/page_owner.c:165 __reset_page_owner+0x71/0x1f0 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+0xc2b/0xdb0 mm/page_alloc.c:2978 __slab_free+0x263/0x2b0 mm/slub.c:5573 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_kmalloc+0x22/0xb0 mm/kasan/common.c:406 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_noprof+0x31c/0x660 mm/slub.c:5380 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] nsim_fib6_rt_create drivers/net/netdevsim/fib.c:547 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:752 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event+0xf3c/0xa410 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x254/0x3d0 drivers/net/netdevsim/fib.c:1493 process_one_work kernel/workqueue.c:3288 [inline] process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3371 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3452 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 net_ratelimit: 18129 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) net_ratelimit: 18949 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:cb:f0:81:56:57, vlan:0)