bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:eb:6c:1e:12:77, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P24225/1:b..l rcu: (detected by 0, t=10503 jiffies, g=214413, q=2778 ncpus=2) task:syz.4.4959 state:R running task stack:26816 pid:24225 tgid:24225 ppid:17094 task_flags:0x40044c flags:0x00080003 Call Trace: context_switch kernel/sched/core.c:5256 [inline] __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7190 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:110 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline] RIP: 0010:unwind_next_frame+0x2c3/0x23d0 arch/x86/kernel/unwind_orc.c:510 Code: 94 dd 93 8f 45 29 e8 4a 8d 1c 82 48 83 c3 fc 49 89 d5 48 39 da 0f 86 21 02 00 00 49 29 d5 49 c1 fd 02 4a 8d 04 6d 00 00 00 00 <4c> 01 e8 48 8d 14 46 48 bd 00 00 00 00 00 fc ff df e9 8f 01 00 00 RSP: 0018:ffffc90003abf598 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8f9a8ef0 RCX: ffffffff8f9a8ef4 RDX: ffffffff8f9a8ef0 RSI: ffffffff9016cc72 RDI: ffffffff8bc08280 RBP: ffffffff8f9a8ef4 R08: 0000000000000001 R09: ffffffff8df41a20 R10: ffffc90003abf6b8 R11: ffffffff81acf490 R12: ffffffff8187ac54 R13: 0000000000000000 R14: ffffc90003abf668 R15: ffffffff8f9a8ef0 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 save_stack+0xf5/0x1f0 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:1395 [inline] __free_frozen_pages+0xbc8/0xd30 mm/page_alloc.c:2943 vfree+0x25a/0x400 mm/vmalloc.c:3466 kcov_put kernel/kcov.c:439 [inline] kcov_close+0x28/0x50 kernel/kcov.c:535 __fput+0x44c/0xa70 fs/file_table.c:468 task_work_run+0x1d4/0x260 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x694/0x22f0 kernel/exit.c:971 do_group_exit+0x21c/0x2d0 kernel/exit.c:1112 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop kernel/entry/common.c:75 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline] irqentry_exit+0x177/0x660 kernel/entry/common.c:196 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0033:0x7fd84b18f749 RSP: 002b:00007fd8493f5fe8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007fd84b3e6180 RCX: 00007fd84b18f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fd84b213f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd84b3e6218 R14: 00007fd84b3e6180 R15: 00007fd84b50fa28 net_ratelimit: 15593 callbacks suppressed 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 veth0_to_bridge with own address as source address (addr:76:eb:6c:1e:12:77, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:eb:6c:1e:12:77, vlan:0) net_ratelimit: 16316 callbacks suppressed 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 veth0_to_bridge with own address as source address (addr:76:eb:6c:1e:12:77, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:eb:6c:1e:12:77, vlan:0)