rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: ieee802154 phy0 wpan0: encryption failed: -22 rcu: (detected by 1, t=10502 jiffies, g=91773, q=350) rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295002176-4294991674), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.4 R running task 27248 30500 18562 0x00000000 Call Trace: sched_show_task.cold+0x332/0x396 kernel/sched/core.c:5337 print_other_cpu_stall kernel/rcu/tree.c:1430 [inline] check_cpu_stall kernel/rcu/tree.c:1557 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0xb37/0xe19 kernel/rcu/tree.c:2682 update_process_times+0x2a/0x70 kernel/time/timer.c:1650 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1419 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1481 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1539 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:tty_kref_put+0x2/0x190 drivers/tty/tty_io.c:1485 Code: c3 e8 62 05 e0 fd eb d0 e8 5b 05 e0 fd e9 79 ff ff ff e8 e1 05 e0 fd eb 97 48 89 ef e8 a7 08 e0 fd eb d5 0f 1f 44 00 00 41 54 <55> 53 48 89 fb e8 84 3b aa fd 48 85 db 74 21 e8 7a 3b aa fd f0 ff RSP: 0018:ffff88805f4c7900 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc9000a15a000 RDX: 0000000000040000 RSI: ffffffff83ba6b38 RDI: ffff8880aae16100 RBP: ffff8880aae16100 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 00000000ecfb5651 R12: ffff88809bbfa000 R13: ffff8882388e3000 R14: ffff8880aae16100 R15: 0000000000400043 tty_open_by_driver drivers/tty/tty_io.c:1968 [inline] tty_open+0x486/0x990 drivers/tty/tty_io.c:2029 chrdev_open+0x266/0x770 fs/char_dev.c:423 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7edacf3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000802 RSI: 0000000020000840 RDI: ffffffffffffff9c RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff9c6904cf R14: 00007f7edacf3300 R15: 0000000000022000 rcu: rcu_preempt kthread starved for 10502 jiffies! g91773 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 29208 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x4cf/0xfe0 kernel/time/timer.c:1818 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode Bluetooth: hci0: command 0x0409 tx timeout Bluetooth: hci1: command 0x0409 tx timeout Bluetooth: hci3: command 0x0409 tx timeout Bluetooth: hci2: command 0x0409 tx timeout Bluetooth: hci4: command 0x0409 tx timeout Bluetooth: hci5: command 0x0409 tx timeout