bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P15799/1:b..l rcu: (detected by 1, t=10502 jiffies, g=101369, q=2927 ncpus=2) task:syz.1.2236 state:X running task stack:25184 pid:15799 tgid:15798 ppid:0 task_flags:0x40044c flags:0x00080001 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6911 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7238 irqentry_exit+0x599/0x620 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__rhashtable_remove_fast include/linux/rhashtable.h:1142 [inline] RIP: 0010:rhashtable_remove_fast include/linux/rhashtable.h:1178 [inline] RIP: 0010:pidfs_remove_pid+0x103/0x9a0 fs/pidfs.c:177 Code: 13 89 70 ff c6 05 19 66 a6 0d 01 48 c7 c7 60 c4 de 8b be 54 03 00 00 48 c7 c2 a0 c4 de 8b e8 f4 a5 4c ff 4c 8b 35 ed 68 da 17 28 9d 5a 09 89 c3 31 ff 89 c6 e8 1d 8d 70 ff 85 db 4c 89 7c 24 RSP: 0018:ffffc9000c917880 EFLAGS: 00000293 RAX: ffffffff82554a74 RBX: 0000000000000001 RCX: ffff888027de9e80 RDX: 0000000000000000 RSI: ffffffff8c27d560 RDI: ffffffff8c27d520 RBP: dffffc0000000000 R08: ffffffff82554a31 R09: ffffffff8e75e5e0 R10: dffffc0000000000 R11: fffffbfff1c81829 R12: ffff8880354c1b00 R13: dffffc0000000000 R14: ffff888055758000 R15: ffffffff82554a31 free_pid+0x30c/0x390 kernel/pid.c:144 release_task+0x1223/0x16f0 kernel/exit.c:295 exit_notify kernel/exit.c:777 [inline] do_exit+0x1674/0x23c0 kernel/exit.c:988 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118 get_signal+0x1284/0x1330 kernel/signal.c:3034 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x86/0x480 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+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcf6899c4ab RSP: 002b:00007fcf69889450 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 0000200000000000 RCX: 00007fcf6899c4ab RDX: 00007fcf69889bd0 RSI: 000000004020ae46 RDI: 0000000000000004 RBP: 0000000000000004 R08: 0000000000000001 R09: 0000000000000018 R10: 0000000000000004 R11: 0000000000000246 R12: 00000000fec00000 R13: 00007fcf69889bd0 R14: 000020000000b000 R15: 000000000000000b bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_1 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:1b, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_1 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:1b, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)