bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11432/1:b..l rcu: (detected by 1, t=10502 jiffies, g=50325, q=2074 ncpus=2) task:syz.5.1339 state:R running task stack:26344 pid:11432 tgid:11425 ppid:6277 task_flags:0x40044c flags:0x00080001 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0xfee/0x60e0 kernel/sched/core.c:6907 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7234 irqentry_exit+0x17b/0x670 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:stack_access_ok+0x1d/0x1d0 arch/x86/kernel/unwind_orc.c:405 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df 41 55 41 54 49 89 d4 48 89 fa 55 48 c1 ea 03 48 89 f5 53 <48> 89 fb 48 83 ec 08 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 3f 01 00 RSP: 0018:ffffc900043df640 EFLAGS: 00000a06 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff9187a596 RDX: 1ffff9200087bedb RSI: ffffc900043df918 RDI: ffffc900043df6d8 RBP: ffffc900043df918 R08: ffffffff9187a59a R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000018005 R12: 0000000000000008 R13: ffffc900043df6d8 R14: ffffc900043df920 R15: ffffc900043df70c deref_stack_reg arch/x86/kernel/unwind_orc.c:419 [inline] unwind_next_frame+0xb0b/0x1ea0 arch/x86/kernel/unwind_orc.c:600 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 save_stack+0x162/0x1e0 mm/page_owner.c:165 __reset_page_owner+0x84/0x190 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+0x7e1/0x10d0 mm/page_alloc.c:2978 vfree.part.0+0x12b/0x9d0 mm/vmalloc.c:3479 vfree+0x55/0x80 mm/vmalloc.c:3456 kcov_put kernel/kcov.c:442 [inline] kcov_put kernel/kcov.c:438 [inline] kcov_close+0x34/0x60 kernel/kcov.c:543 __fput+0x3ff/0xb40 fs/file_table.c:469 task_work_run+0x150/0x240 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x829/0x2aa0 kernel/exit.c:971 do_group_exit+0xd5/0x2a0 kernel/exit.c:1112 get_signal+0x1ec7/0x21e0 kernel/signal.c:3034 arch_do_signal_or_restart+0x91/0x7a0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x86/0x4a0 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x67c/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc59939c629 RSP: 002b:00007fc5971d3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: 0000000000000058 RBX: 00007fc599616270 RCX: 00007fc59939c629 RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000007 RBP: 00007fc599432b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc599616308 R14: 00007fc599616270 R15: 00007ffd6fe01a18 bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) net_ratelimit: 26726 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:e0:19:a7:76:70, vlan:0)