bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14510/1:b..l rcu: (detected by 1, t=10503 jiffies, g=92041, q=1255 ncpus=2) task:syz.2.2210 state:R running task stack:26008 pid:14510 tgid:14506 ppid:5824 task_flags:0x40054c flags:0x00080003 Call Trace: context_switch kernel/sched/core.c:5387 [inline] __schedule+0x10e9/0x6820 kernel/sched/core.c:7188 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7512 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:476 [inline] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline] irqentry_exit+0x1fe/0x790 kernel/entry/common.c:164 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x5e/0x370 kernel/locking/lockdep.c:5872 Code: 05 3b f2 2e 12 83 f8 07 0f 87 d9 02 00 00 48 0f a3 05 46 c5 f6 0e 0f 82 a4 02 00 00 8b 35 ce f8 f6 0e 85 f6 0f 85 bf 00 00 00 <48> 8b 44 24 30 65 48 2b 05 dd f1 2e 12 0f 85 ed 02 00 00 48 83 c4 RSP: 0018:ffffc9000386f600 EFLAGS: 00000206 RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8df34f43 RDI: ffffffff8c1c2200 RBP: ffffffff8e7e5460 R08: 0000000086db7919 R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 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+0xd1/0x2090 arch/x86/kernel/unwind_orc.c:495 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:1402 [inline] __free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2943 vfree mm/vmalloc.c:3472 [inline] vfree+0x15f/0x8d0 mm/vmalloc.c:3436 kcov_put kernel/kcov.c:442 [inline] kcov_put kernel/kcov.c:438 [inline] kcov_close+0x34/0x60 kernel/kcov.c:543 __fput+0x3ff/0xb50 fs/file_table.c:510 task_work_run+0x150/0x240 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x8d2/0x2a60 kernel/exit.c:975 do_group_exit+0xd5/0x2a0 kernel/exit.c:1117 get_signal+0x1ec7/0x21e0 kernel/signal.c:3037 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:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x706/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9c9a19c819 RSP: 002b:00007f9c9af85028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: 0000000000000400 RBX: 00007f9c9a416180 RCX: 00007f9c9a19c819 RDX: 000000000800001d RSI: 0000200000007fc0 RDI: 000000000000000a RBP: 00007f9c9a232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000001c R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9c9a416218 R14: 00007f9c9a416180 R15: 00007ffc8738f808 net_ratelimit: 29538 callbacks suppressed bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:3e:c8:01:ec:44:c3, vlan:0)