bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P994/1:b..l rcu: (detected by 1, t=10503 jiffies, g=11997, q=1613 ncpus=2) task:kworker/0:2 state:R running task stack:25304 pid:994 tgid:994 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: events nsim_fib_event_work Call Trace: context_switch kernel/sched/core.c:5387 [inline] __schedule+0x17b4/0x5680 kernel/sched/core.c:7188 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7512 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_acquire+0x221/0x350 kernel/locking/lockdep.c:5872 Code: ff ff ff e8 e1 94 06 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 cb 5f 97 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d d8 5d 92 RSP: 0018:ffffc900051371b8 EFLAGS: 00000286 RAX: 4c67f9bb7887ba00 RBX: 0000000000000000 RCX: 0000000000000046 RDX: 000000005709b2cf RSI: ffffffff8e218a1b RDI: ffffffff8c28ac60 RBP: ffffffff8176e256 R08: ffffffff8176e256 R09: ffffffff8e95cd60 R10: ffffc90005137318 R11: ffffffff81b0d880 R12: 0000000000000002 R13: ffffffff8e95cd60 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:300 [inline] rcu_read_lock include/linux/rcupdate.h:838 [inline] class_rcu_constructor include/linux/rcupdate.h:1181 [inline] unwind_next_frame+0xc3/0x2550 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: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:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 __slab_free+0x274/0x2c0 mm/slub.c:5608 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+0x31c/0x660 mm/slub.c:5415 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+0xf36/0xa390 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x254/0x3d0 drivers/net/netdevsim/fib.c:1493 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466 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: 20092 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) net_ratelimit: 21358 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:ae:b9:73:7d:e5, vlan:0)