====================================== | [ 27.253665][ T674] softirqs last disabled at (7686677): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 27.253667][ T674] Preemption disabled at: | [ 27.253668][ T674] 0x0 | [ 27.253678][ T674] Tainted: [W]=WARN [ 27.253679][ T674] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.253681][ T674] Call Trace: [ 27.253682][ T674] [ 27.253684][ T674] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 27.253690][ T674] __might_resched.cold (kernel/sched/core.c:9234) [ 27.253694][ T674] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 27.253698][ T674] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 27.253703][ T674] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 27.253706][ T674] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 27.253712][ T674] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 27.253715][ T674] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 27.253718][ T674] put_chars (drivers/char/virtio_console.c:1176) [ 27.253720][ T674] ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842) [ 27.253722][ T674] ? __send_to_port (drivers/char/virtio_console.c:654) [ 27.253725][ T674] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 27.253730][ T674] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 27.253732][ T674] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 27.253736][ T674] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 27.253739][ T674] ? mark_usage (kernel/locking/lockdep.c:4690) [ 27.253741][ T674] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 27.253742][ T674] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 27.253746][ T674] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 27.253748][ T674] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 27.253751][ T674] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 27.253754][ T674] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 27.253757][ T674] console_emit_next_record (kernel/printk/printk.c:3183) [ 27.253761][ T674] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 27.253763][ T674] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 27.253766][ T674] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 27.253768][ T674] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 27.253772][ T674] console_flush_one_record (kernel/printk/printk.c:3268) [ 27.253776][ T674] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 27.253778][ T674] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 27.253783][ T674] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 27.253786][ T674] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 27.253787][ T674] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 27.253790][ T674] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 27.253793][ T674] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 27.253795][ T674] ? vprintk_emit (kernel/printk/printk.c:2478) [ 27.253798][ T674] vprintk_emit (kernel/printk/printk.c:2479) [ 27.253802][ T674] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 27.253805][ T674] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 27.253809][ T674] _printk (kernel/printk/printk.c:2504) [ 27.253812][ T674] ? snapshot_read.cold (user.c:?) [ 27.253815][ T674] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 27.253817][ T674] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 27.253821][ T674] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 27.253824][ T674] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 27.253827][ T674] ? exit_notify (kernel/exit.c:780) [ 27.253832][ T674] __x64_sys_exit (kernel/exit.c:1118 kernel/exit.c:1116 kernel/exit.c:1116) [ 27.253834][ T674] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:61) [ 27.253837][ T674] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 27.253840][ T674] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 27.253843][ T674] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 27.253845][ T674] RIP: 0033:0x7f9e2db23c49 [ 27.253848][ T674] Code: Unable to access opcode bytes at 0x7f9e2db23c1f. Code starting with the faulting instruction =========================================== [ 27.253849][ T674] RSP: 002b:00007f9e2d2e2e60 EFLAGS: 00000246 ORIG_RAX: 000000000000003c [ 27.253851][ T674] RAX: ffffffffffffffda RBX: 00007f9e2d2e36c0 RCX: 00007f9e2db23c49 [ 27.253852][ T674] RDX: 0000000000000000 RSI: 0000000000801000 RDI: 0000000000000000 [ 27.253854][ T674] RBP: 00007f9e2d2e2f70 R08: 0000000000000001 R09: 00007f9e2d2e36c0 [ 27.253854][ T674] R10: 0000000000000008 R11: 0000000000000246 R12: 00007f9e2cae3000 [ 27.253855][ T674] R13: 00007fff66567e00 R14: 0000000000000002 R15: 00007fff66567f07 | [ 28.965910][ T770] softirqs last disabled at (41592): ovpn_peer_del (./include/linux/spinlock.h:353 drivers/net/ovpn/peer.c:1214) ovpn | [ 28.965913][ T770] Preemption disabled at: | [ 28.965914][ T770] 0x0 | [ 28.965924][ T770] Tainted: [W]=WARN [ 28.965925][ T770] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.965926][ T770] Call Trace: [ 28.965928][ T770] [ 28.965930][ T770] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 28.965936][ T770] __might_resched.cold (kernel/sched/core.c:9234) [ 28.965941][ T770] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 28.965945][ T770] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 28.965950][ T770] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 28.965952][ T770] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 28.965958][ T770] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 28.965960][ T770] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 28.965964][ T770] put_chars (drivers/char/virtio_console.c:1176) [ 28.965966][ T770] ? __send_to_port (drivers/char/virtio_console.c:654) [ 28.965968][ T770] ? check_prev_add (kernel/locking/lockdep.c:3258 (discriminator 3)) [ 28.965972][ T770] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 28.965976][ T770] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 28.965979][ T770] ? mark_usage (kernel/locking/lockdep.c:4690) [ 28.965981][ T770] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 28.965983][ T770] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 28.965987][ T770] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 28.965988][ T770] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 28.965993][ T770] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 28.965997][ T770] console_emit_next_record (kernel/printk/printk.c:3183) [ 28.966000][ T770] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 28.966002][ T770] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 28.966005][ T770] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 28.966010][ T770] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 28.966014][ T770] console_flush_one_record (kernel/printk/printk.c:3268) [ 28.966018][ T770] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 28.966020][ T770] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 28.966025][ T770] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 28.966028][ T770] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 28.966030][ T770] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 28.966032][ T770] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 28.966036][ T770] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 28.966038][ T770] ? vprintk_emit (kernel/printk/printk.c:2478) [ 28.966041][ T770] vprintk_emit (kernel/printk/printk.c:2479) [ 28.966045][ T770] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 28.966046][ T770] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 28.966050][ T770] ? __kernel_text_address (kernel/extable.c:79) [ 28.966051][ T770] ? write_profile (profile.c:?) [ 28.966053][ T770] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 28.966058][ T770] _printk (kernel/printk/printk.c:2504) [ 28.966062][ T770] ? snapshot_read.cold (user.c:?) [ 28.966066][ T770] ? mark_usage (kernel/locking/lockdep.c:4690) [ 28.966067][ T770] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 28.966070][ T770] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 28.966074][ T770] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 28.966076][ T770] ? netdev_notice (net/core/dev.c:13194) [ 28.966077][ T770] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 28.966080][ T770] ? mark_usage (kernel/locking/lockdep.c:4690) [ 28.966083][ T770] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 28.966089][ T770] ovpn_nl_peer_del_notify (drivers/net/ovpn/netlink.c:1173) ovpn [ 28.966094][ T770] ? ovpn_nl_key_new_doit.cold (drivers/net/ovpn/netlink.c:958 (discriminator 13)) ovpn [ 28.966098][ T770] ? ovpn_peer_get_by_id (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) drivers/net/ovpn/peer.c:680 (discriminator 2)) ovpn [ 28.966103][ T770] ovpn_peer_remove (drivers/net/ovpn/peer.c:716) ovpn [ 28.966107][ T770] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 28.966110][ T770] ? __ovpn_peer_hash_transp_addr (drivers/net/ovpn/peer.c:943) ovpn [ 28.966116][ T770] ovpn_peer_del (drivers/net/ovpn/peer.c:1166 drivers/net/ovpn/peer.c:1217) ovpn [ 28.966120][ T770] ? ovpn_peer_add (drivers/net/ovpn/peer.c:1097 (discriminator 9)) ovpn [ 28.966127][ T770] ovpn_nl_peer_del_doit (drivers/net/ovpn/netlink.c:823) ovpn [ 28.966130][ T770] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:210 (discriminator 6) kernel/locking/spinlock.c:221 (discriminator 6)) [ 28.966134][ T770] ? ovpn_nl_peer_get_dumpit (drivers/net/ovpn/netlink.c:790) ovpn [ 28.966136][ T770] ? ref_tracker_alloc (./include/linux/spinlock.h:425 (discriminator 3) lib/ref_tracker.c:281 (discriminator 3)) [ 28.966147][ T770] ? ovpn_get_dev_from_attrs (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) drivers/net/ovpn/netlink.c:67 (discriminator 2)) ovpn [ 28.966151][ T770] ? ovpn_get_dev_from_attrs (./include/linux/rcupdate.h:882 drivers/net/ovpn/netlink.c:67) ovpn [ 28.966157][ T770] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114) [ 28.966161][ T770] ? genl_family_rcv_msg_attrs_parse.isra.0 (./include/net/netlink.h:785 (discriminator 2)) [ 28.966163][ T770] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 28.966168][ T770] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 28.966171][ T770] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 28.966174][ T770] ? write_profile (profile.c:?) [ 28.966176][ T770] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 28.966179][ T770] genl_family_rcv_msg (net/netlink/genetlink.c:1194) [ 28.966183][ T770] ? genl_family_rcv_msg_dumpit (net/netlink/genetlink.c:1079) [ 28.966186][ T770] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 28.966188][ T770] ? ovpn_nl_send_peer (drivers/net/ovpn/netlink.c:606) ovpn [ 28.966190][ T770] ? ovpn_nl_peer_get_dumpit (drivers/net/ovpn/netlink.c:790) ovpn [ 28.966193][ T770] ? ovpn_nl_pre_doit (drivers/net/ovpn/netlink.c:82) ovpn [ 28.966196][ T770] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 28.966202][ T770] genl_rcv_msg (net/netlink/genetlink.c:1209) [ 28.966205][ T770] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 28.966208][ T770] ? genl_family_rcv_msg (net/netlink/genetlink.c:1136 (discriminator 2)) [ 28.966211][ T770] ? netlink_ack (./include/linux/skbuff.h:2718) [ 28.966218][ T770] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2)) [ 28.966220][ T770] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2)) [ 28.966224][ T770] genl_rcv (net/netlink/genetlink.c:1218) [ 28.966227][ T770] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 28.966231][ T770] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 28.966234][ T770] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 28.966243][ T770] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 28.966247][ T770] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 28.966251][ T770] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 28.966257][ T770] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 28.966260][ T770] ? copy_msghdr_from_user (net/socket.c:2650) [ 28.966263][ T770] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 28.966264][ T770] ? move_addr_to_kernel (net/socket.c:258) [ 28.966272][ T770] ___sys_sendmsg (net/socket.c:2767) [ 28.966275][ T770] ? copy_msghdr_from_user (net/socket.c:2619) [ 28.966277][ T770] ? kfree (mm/slub.c:6778 (discriminator 1)) [ 28.966293][ T770] __sys_sendmsg (net/socket.c:2799) [ 28.966296][ T770] ? __sys_sendmsg_sock (net/socket.c:2780) [ 28.966301][ T770] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 28.966304][ T770] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 28.966308][ T770] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 28.966311][ T770] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 28.966313][ T770] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 28.966316][ T770] RIP: 0033:0x7fcbdfff854e [ 28.966318][ T770] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 b4 bd 00 00 call 0xbdbc 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 28.966320][ T770] RSP: 002b:00007ffc75f2b660 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 28.966322][ T770] RAX: ffffffffffffffda RBX: 0000000037c0d130 RCX: 00007fcbdfff854e [ 28.966324][ T770] RDX: 0000000000000000 RSI: 00007ffc75f2b700 RDI: 0000000000000005 [ 28.966325][ T770] RBP: 00007ffc75f2b670 R08: 0000000000000000 R09: 0000000000000000 [ 28.966326][ T770] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000037c0d200 [ 28.966327][ T770] R13: 00007ffc75f2b700 R14: 0000000037c0e260 R15: 000000000040bda8 | [ 31.946108][ T822] softirqs last disabled at (34002): ovpn_peer_del (./include/linux/spinlock.h:353 drivers/net/ovpn/peer.c:1214) ovpn | [ 31.946111][ T822] Preemption disabled at: | [ 31.946112][ T822] 0x0 | [ 31.946122][ T822] Tainted: [W]=WARN [ 31.946122][ T822] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.946124][ T822] Call Trace: [ 31.946126][ T822] [ 31.946127][ T822] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 31.946134][ T822] __might_resched.cold (kernel/sched/core.c:9234) [ 31.946138][ T822] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 31.946142][ T822] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 31.946147][ T822] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 31.946149][ T822] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 31.946155][ T822] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 31.946158][ T822] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 31.946161][ T822] put_chars (drivers/char/virtio_console.c:1176) [ 31.946164][ T822] ? __send_to_port (drivers/char/virtio_console.c:654) [ 31.946166][ T822] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 31.946171][ T822] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 31.946173][ T822] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 31.946177][ T822] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 31.946180][ T822] ? mark_usage (kernel/locking/lockdep.c:4690) [ 31.946182][ T822] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 31.946183][ T822] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 31.946187][ T822] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 31.946189][ T822] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 31.946193][ T822] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 31.946197][ T822] console_emit_next_record (kernel/printk/printk.c:3183) [ 31.946201][ T822] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 31.946202][ T822] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 31.946205][ T822] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 31.946208][ T822] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 31.946212][ T822] console_flush_one_record (kernel/printk/printk.c:3268) [ 31.946215][ T822] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 31.946217][ T822] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 31.946222][ T822] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 31.946225][ T822] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 31.946227][ T822] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 31.946229][ T822] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 31.946232][ T822] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 31.946234][ T822] ? vprintk_emit (kernel/printk/printk.c:2478) [ 31.946237][ T822] vprintk_emit (kernel/printk/printk.c:2479) [ 31.946241][ T822] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 31.946243][ T822] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 31.946246][ T822] ? __kernel_text_address (kernel/extable.c:79) [ 31.946247][ T822] ? write_profile (profile.c:?) [ 31.946255][ T822] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 31.946260][ T822] _printk (kernel/printk/printk.c:2504) [ 31.946263][ T822] ? snapshot_read.cold (user.c:?) [ 31.946267][ T822] ? mark_usage (kernel/locking/lockdep.c:4690) [ 31.946269][ T822] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 31.946272][ T822] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 31.946275][ T822] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 31.946277][ T822] ? netdev_notice (net/core/dev.c:13194) [ 31.946279][ T822] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 31.946281][ T822] ? mark_usage (kernel/locking/lockdep.c:4690) [ 31.946284][ T822] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 31.946289][ T822] ovpn_nl_peer_del_notify (drivers/net/ovpn/netlink.c:1173) ovpn [ 31.946294][ T822] ? ovpn_nl_key_new_doit.cold (drivers/net/ovpn/netlink.c:958 (discriminator 13)) ovpn [ 31.946298][ T822] ? ovpn_peer_get_by_id (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) drivers/net/ovpn/peer.c:680 (discriminator 2)) ovpn [ 31.946303][ T822] ovpn_peer_remove (drivers/net/ovpn/peer.c:716) ovpn [ 31.946307][ T822] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 31.946309][ T822] ? __ovpn_peer_hash_transp_addr (drivers/net/ovpn/peer.c:943) ovpn [ 31.946316][ T822] ovpn_peer_del (drivers/net/ovpn/peer.c:1166 drivers/net/ovpn/peer.c:1217) ovpn [ 31.946320][ T822] ? ovpn_peer_add (drivers/net/ovpn/peer.c:1097 (discriminator 9)) ovpn [ 31.946326][ T822] ovpn_nl_peer_del_doit (drivers/net/ovpn/netlink.c:823) ovpn [ 31.946329][ T822] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:210 (discriminator 6) kernel/locking/spinlock.c:221 (discriminator 6)) [ 31.946333][ T822] ? ovpn_nl_peer_get_dumpit (drivers/net/ovpn/netlink.c:790) ovpn [ 31.946335][ T822] ? ref_tracker_alloc (./include/linux/spinlock.h:425 (discriminator 3) lib/ref_tracker.c:281 (discriminator 3)) [ 31.946345][ T822] ? ovpn_get_dev_from_attrs (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) drivers/net/ovpn/netlink.c:67 (discriminator 2)) ovpn [ 31.946350][ T822] ? ovpn_get_dev_from_attrs (./include/linux/rcupdate.h:882 drivers/net/ovpn/netlink.c:67) ovpn [ 31.946355][ T822] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114) [ 31.946359][ T822] ? genl_family_rcv_msg_attrs_parse.isra.0 (./include/net/netlink.h:785 (discriminator 2)) [ 31.946361][ T822] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 31.946366][ T822] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 31.946369][ T822] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 31.946372][ T822] ? write_profile (profile.c:?) [ 31.946373][ T822] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 31.946377][ T822] genl_family_rcv_msg (net/netlink/genetlink.c:1194) [ 31.946380][ T822] ? genl_family_rcv_msg_dumpit (net/netlink/genetlink.c:1079) [ 31.946383][ T822] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 31.946384][ T822] ? ovpn_nl_send_peer (drivers/net/ovpn/netlink.c:606) ovpn [ 31.946387][ T822] ? ovpn_nl_peer_get_dumpit (drivers/net/ovpn/netlink.c:790) ovpn [ 31.946390][ T822] ? ovpn_nl_pre_doit (drivers/net/ovpn/netlink.c:82) ovpn [ 31.946393][ T822] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 31.946398][ T822] genl_rcv_msg (net/netlink/genetlink.c:1209) [ 31.946401][ T822] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 31.946403][ T822] ? genl_family_rcv_msg (net/netlink/genetlink.c:1136 (discriminator 2)) [ 31.946407][ T822] ? netlink_ack (./include/linux/skbuff.h:2718) [ 31.946413][ T822] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2)) [ 31.946415][ T822] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2)) [ 31.946419][ T822] genl_rcv (net/netlink/genetlink.c:1218) [ 31.946421][ T822] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 31.946425][ T822] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 31.946428][ T822] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 31.946432][ T822] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 31.946436][ T822] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 31.946440][ T822] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 31.946445][ T822] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 31.946449][ T822] ? copy_msghdr_from_user (net/socket.c:2650) [ 31.946451][ T822] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 31.946453][ T822] ? move_addr_to_kernel (net/socket.c:258) [ 31.946460][ T822] ___sys_sendmsg (net/socket.c:2767) [ 31.946463][ T822] ? copy_msghdr_from_user (net/socket.c:2619) [ 31.946465][ T822] ? kfree (mm/slub.c:6778 (discriminator 1)) [ 31.946481][ T822] __sys_sendmsg (net/socket.c:2799) [ 31.946485][ T822] ? __sys_sendmsg_sock (net/socket.c:2780) [ 31.946490][ T822] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 31.946492][ T822] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 31.946496][ T822] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 31.946499][ T822] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 31.946502][ T822] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 31.946504][ T822] RIP: 0033:0x7fe15a53e54e [ 31.946506][ T822] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 b4 bd 00 00 call 0xbdbc 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 31.946508][ T822] RSP: 002b:00007ffd73f55940 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 31.946511][ T822] RAX: ffffffffffffffda RBX: 0000000012dcd130 RCX: 00007fe15a53e54e [ 31.946512][ T822] RDX: 0000000000000000 RSI: 00007ffd73f559e0 RDI: 0000000000000005 [ 31.946513][ T822] RBP: 00007ffd73f55950 R08: 0000000000000000 R09: 0000000000000000 [ 31.946514][ T822] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000012dcd200 [ 31.946515][ T822] R13: 00007ffd73f559e0 R14: 0000000012dce260 R15: 000000000040bda8 | [ 37.089822][ T10] softirqs last disabled at (54824): ovpn_peer_keepalive_work (./include/linux/spinlock.h:353 drivers/net/ovpn/peer.c:1449) ovpn | [ 37.089825][ T10] Preemption disabled at: | [ 37.089826][ T10] 0x0 | [ 37.089836][ T10] Tainted: [W]=WARN [ 37.089837][ T10] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 37.089838][ T10] Workqueue: ovpn ovpn_peer_keepalive_work [ovpn] [ 37.089843][ T10] Call Trace: [ 37.089844][ T10] [ 37.089846][ T10] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 37.089852][ T10] __might_resched.cold (kernel/sched/core.c:9234) [ 37.089857][ T10] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 37.089861][ T10] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 37.089866][ T10] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 37.089868][ T10] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 37.089874][ T10] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 37.089877][ T10] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 37.089880][ T10] put_chars (drivers/char/virtio_console.c:1176) [ 37.089883][ T10] ? __send_to_port (drivers/char/virtio_console.c:654) [ 37.089888][ T10] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 37.089891][ T10] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 37.089895][ T10] ? mark_usage (kernel/locking/lockdep.c:4690) [ 37.089896][ T10] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 37.089898][ T10] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 37.089902][ T10] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 37.089904][ T10] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 37.089907][ T10] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 37.089912][ T10] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 37.089916][ T10] console_emit_next_record (kernel/printk/printk.c:3183) [ 37.089919][ T10] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 37.089921][ T10] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 37.089924][ T10] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 37.089927][ T10] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 37.089930][ T10] console_flush_one_record (kernel/printk/printk.c:3268) [ 37.089935][ T10] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 37.089936][ T10] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 37.089941][ T10] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 37.089944][ T10] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 37.089946][ T10] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 37.089948][ T10] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 37.089952][ T10] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 37.089954][ T10] ? vprintk_emit (kernel/printk/printk.c:2478) [ 37.089957][ T10] vprintk_emit (kernel/printk/printk.c:2479) [ 37.089960][ T10] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 37.089966][ T10] _printk (kernel/printk/printk.c:2504) [ 37.089970][ T10] ? snapshot_read.cold (user.c:?) [ 37.089974][ T10] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 37.089976][ T10] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 37.089979][ T10] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 37.089982][ T10] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 37.089985][ T10] ? netdev_notice (net/core/dev.c:13194) [ 37.089986][ T10] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 37.089991][ T10] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 37.089993][ T10] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 37.089998][ T10] ovpn_nl_peer_del_notify (drivers/net/ovpn/netlink.c:1173) ovpn [ 37.090003][ T10] ? ovpn_nl_key_new_doit.cold (drivers/net/ovpn/netlink.c:958 (discriminator 13)) ovpn [ 37.090010][ T10] ovpn_peer_remove (drivers/net/ovpn/peer.c:716) ovpn [ 37.090014][ T10] ? __ovpn_peer_hash_transp_addr (drivers/net/ovpn/peer.c:943) ovpn [ 37.090017][ T10] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 37.090019][ T10] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 37.090024][ T10] ovpn_peer_keepalive_work_single (drivers/net/ovpn/peer.c:1347) ovpn [ 37.090028][ T10] ? ovpn_peers_release_mp (drivers/net/ovpn/peer.c:1290) ovpn [ 37.090031][ T10] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 37.090036][ T10] ovpn_peer_keepalive_work (drivers/net/ovpn/peer.c:1396 drivers/net/ovpn/peer.c:1452) ovpn [ 37.090040][ T10] ? process_one_work (kernel/workqueue.c:3363 (discriminator 2)) [ 37.090043][ T10] ? ovpn_peers_free (drivers/net/ovpn/peer.c:1307) ovpn [ 37.090046][ T10] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 37.090048][ T10] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 37.090050][ T10] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 37.090054][ T10] process_one_work (kernel/workqueue.c:3387) [ 37.090060][ T10] ? __queue_delayed_work (kernel/workqueue.c:2622) [ 37.090063][ T10] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 37.090070][ T10] worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551) [ 37.090074][ T10] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 37.090077][ T10] ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272) [ 37.090080][ T10] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 37.090083][ T10] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 37.090085][ T10] kthread (kernel/kthread.c:436) [ 37.090086][ T10] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 37.090090][ T10] ? kthread_affine_preferred (kernel/kthread.c:857) [ 37.090092][ T10] ret_from_fork (arch/x86/kernel/process.c:158) [ 37.090096][ T10] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1)) [ 37.090100][ T10] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 37.090103][ T10] ? kthread_affine_preferred (kernel/kthread.c:857) [ 37.090105][ T10] ret_from_fork_asm (arch/x86/entry/entry_64.S:245) | [ 38.177539][ T897] softirqs last disabled at (530): ovpn_peer_keepalive_work (./include/linux/spinlock.h:353 drivers/net/ovpn/peer.c:1449) ovpn | [ 38.177542][ T897] Preemption disabled at: | [ 38.177542][ T897] 0x0 | [ 38.177549][ T897] Tainted: [W]=WARN [ 38.177550][ T897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 38.177551][ T897] Workqueue: ovpn ovpn_peer_keepalive_work [ovpn] [ 38.177554][ T897] Call Trace: [ 38.177555][ T897] [ 38.177556][ T897] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 38.177561][ T897] __might_resched.cold (kernel/sched/core.c:9234) [ 38.177565][ T897] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 38.177568][ T897] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 38.177573][ T897] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 38.177575][ T897] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 38.177580][ T897] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 38.177582][ T897] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 38.177585][ T897] put_chars (drivers/char/virtio_console.c:1176) [ 38.177587][ T897] ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842) [ 38.177589][ T897] ? __send_to_port (drivers/char/virtio_console.c:654) [ 38.177592][ T897] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 38.177596][ T897] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 38.177598][ T897] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 38.177601][ T897] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 38.177604][ T897] ? mark_usage (kernel/locking/lockdep.c:4690) [ 38.177605][ T897] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 38.177607][ T897] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 38.177611][ T897] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 38.177613][ T897] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 38.177616][ T897] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 38.177619][ T897] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 38.177622][ T897] console_emit_next_record (kernel/printk/printk.c:3183) [ 38.177626][ T897] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 38.177628][ T897] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 38.177631][ T897] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 38.177633][ T897] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 38.177637][ T897] console_flush_one_record (kernel/printk/printk.c:3268) [ 38.177641][ T897] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 38.177643][ T897] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 38.177648][ T897] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 38.177650][ T897] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 38.177652][ T897] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 38.177654][ T897] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 38.177658][ T897] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 38.177660][ T897] ? vprintk_emit (kernel/printk/printk.c:2478) [ 38.177663][ T897] vprintk_emit (kernel/printk/printk.c:2479) [ 38.177666][ T897] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 38.177669][ T897] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25) [ 38.177674][ T897] _printk (kernel/printk/printk.c:2504) [ 38.177677][ T897] ? snapshot_read.cold (user.c:?) [ 38.177681][ T897] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 38.177684][ T897] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 38.177687][ T897] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 38.177689][ T897] ? netdev_notice (net/core/dev.c:13194) [ 38.177691][ T897] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 38.177694][ T897] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 38.177697][ T897] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 38.177699][ T897] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 38.177703][ T897] ovpn_nl_peer_del_notify (drivers/net/ovpn/netlink.c:1173) ovpn [ 38.177708][ T897] ? ovpn_nl_key_new_doit.cold (drivers/net/ovpn/netlink.c:958 (discriminator 13)) ovpn [ 38.177715][ T897] ovpn_peer_remove (drivers/net/ovpn/peer.c:716) ovpn [ 38.177719][ T897] ? __ovpn_peer_hash_transp_addr (drivers/net/ovpn/peer.c:943) ovpn [ 38.177722][ T897] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 38.177724][ T897] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 38.177729][ T897] ovpn_peer_keepalive_work_single (drivers/net/ovpn/peer.c:1347) ovpn [ 38.177733][ T897] ? ovpn_peers_release_mp (drivers/net/ovpn/peer.c:1290) ovpn [ 38.177736][ T897] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 38.177741][ T897] ovpn_peer_keepalive_work (drivers/net/ovpn/peer.c:1396 drivers/net/ovpn/peer.c:1452) ovpn [ 38.177745][ T897] ? process_one_work (kernel/workqueue.c:3363 (discriminator 2)) [ 38.177748][ T897] ? ovpn_peers_free (drivers/net/ovpn/peer.c:1307) ovpn [ 38.177751][ T897] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 38.177753][ T897] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 38.177755][ T897] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 38.177759][ T897] process_one_work (kernel/workqueue.c:3387) [ 38.177765][ T897] ? __queue_delayed_work (kernel/workqueue.c:2622) [ 38.177768][ T897] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 38.177776][ T897] worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551) [ 38.177780][ T897] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 38.177782][ T897] ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272) [ 38.177784][ T897] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 38.177787][ T897] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 38.177789][ T897] kthread (kernel/kthread.c:436) [ 38.177791][ T897] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 38.177793][ T897] ? kthread_affine_preferred (kernel/kthread.c:857) [ 38.177796][ T897] ret_from_fork (arch/x86/kernel/process.c:158) [ 38.177798][ T897] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1)) [ 38.177801][ T897] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 38.177804][ T897] ? kthread_affine_preferred (kernel/kthread.c:857) [ 38.177807][ T897] ret_from_fork_asm (arch/x86/entry/entry_64.S:245) | [ 43.299056][ T50] softirqs last disabled at (25246): ovpn_peer_keepalive_work (./include/linux/spinlock.h:353 drivers/net/ovpn/peer.c:1449) ovpn | [ 43.299059][ T50] Preemption disabled at: | [ 43.299060][ T50] 0x0 | [ 43.299071][ T50] Tainted: [W]=WARN [ 43.299071][ T50] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 43.299073][ T50] Workqueue: ovpn ovpn_peer_keepalive_work [ovpn] [ 43.299077][ T50] Call Trace: [ 43.299079][ T50] [ 43.299081][ T50] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 43.299087][ T50] __might_resched.cold (kernel/sched/core.c:9234) [ 43.299091][ T50] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 43.299095][ T50] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 43.299101][ T50] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 43.299103][ T50] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 43.299109][ T50] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 43.299112][ T50] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 43.299115][ T50] put_chars (drivers/char/virtio_console.c:1176) [ 43.299117][ T50] ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842) [ 43.299119][ T50] ? __send_to_port (drivers/char/virtio_console.c:654) [ 43.299122][ T50] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 43.299127][ T50] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 43.299129][ T50] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 43.299133][ T50] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 43.299136][ T50] ? mark_usage (kernel/locking/lockdep.c:4690) [ 43.299138][ T50] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 43.299140][ T50] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 43.299143][ T50] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 43.299146][ T50] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 43.299149][ T50] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 43.299151][ T50] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 43.299155][ T50] console_emit_next_record (kernel/printk/printk.c:3183) [ 43.299159][ T50] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 43.299161][ T50] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 43.299164][ T50] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 43.299166][ T50] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 43.299170][ T50] console_flush_one_record (kernel/printk/printk.c:3268) [ 43.299174][ T50] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 43.299176][ T50] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 43.299181][ T50] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 43.299184][ T50] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 43.299186][ T50] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 43.299188][ T50] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 43.299192][ T50] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 43.299193][ T50] ? vprintk_emit (kernel/printk/printk.c:2478) [ 43.299197][ T50] vprintk_emit (kernel/printk/printk.c:2479) [ 43.299201][ T50] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 43.299203][ T50] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 43.299208][ T50] _printk (kernel/printk/printk.c:2504) [ 43.299211][ T50] ? snapshot_read.cold (user.c:?) [ 43.299213][ T50] ? try_to_wake_up (./include/linux/preempt.h:500 (discriminator 1) kernel/sched/core.c:4263 (discriminator 1)) [ 43.299216][ T50] ? select_fallback_rq (kernel/sched/sched.h:1424) [ 43.299218][ T50] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 43.299221][ T50] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 43.299225][ T50] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 43.299227][ T50] ? netdev_notice (net/core/dev.c:13194) [ 43.299232][ T50] ? __queue_work (./include/linux/rcupdate.h:882 kernel/workqueue.c:2459) [ 43.299235][ T50] ? kthread (kernel/kthread.c:436) [ 43.299240][ T50] ovpn_nl_peer_del_notify (drivers/net/ovpn/netlink.c:1173) ovpn [ 43.299245][ T50] ? ovpn_nl_key_new_doit.cold (drivers/net/ovpn/netlink.c:958 (discriminator 13)) ovpn [ 43.299248][ T50] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 43.299251][ T50] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2)) [ 43.299253][ T50] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 43.299258][ T50] ovpn_peer_remove (drivers/net/ovpn/peer.c:716) ovpn [ 43.299261][ T50] ? __ovpn_peer_hash_transp_addr (drivers/net/ovpn/peer.c:943) ovpn [ 43.299264][ T50] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 43.299266][ T50] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 43.299270][ T50] ovpn_peer_keepalive_work_single (drivers/net/ovpn/peer.c:1347) ovpn [ 43.299274][ T50] ? ovpn_peers_release_mp (drivers/net/ovpn/peer.c:1290) ovpn [ 43.299277][ T50] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 43.299282][ T50] ovpn_peer_keepalive_work (drivers/net/ovpn/peer.c:1423 drivers/net/ovpn/peer.c:1456) ovpn [ 43.299286][ T50] ? process_one_work (kernel/workqueue.c:3363 (discriminator 2)) [ 43.299289][ T50] ? ovpn_peers_free (drivers/net/ovpn/peer.c:1307) ovpn [ 43.299292][ T50] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 43.299294][ T50] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 43.299296][ T50] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 43.299304][ T50] ? process_one_work (kernel/workqueue.c:3363 (discriminator 2)) [ 43.299306][ T50] process_one_work (kernel/workqueue.c:3387) [ 43.299312][ T50] ? __queue_delayed_work (kernel/workqueue.c:2622) [ 43.299315][ T50] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 43.299323][ T50] worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551) [ 43.299327][ T50] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 43.299329][ T50] ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272) [ 43.299331][ T50] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 43.299334][ T50] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 43.299336][ T50] kthread (kernel/kthread.c:436) [ 43.299338][ T50] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 43.299340][ T50] ? kthread_affine_preferred (kernel/kthread.c:857) [ 43.299343][ T50] ret_from_fork (arch/x86/kernel/process.c:158) [ 43.299347][ T50] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1)) [ 43.299350][ T50] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 43.299353][ T50] ? kthread_affine_preferred (kernel/kthread.c:857) Finger prints: __irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print ovpn_peer_del:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print ovpn_peer_keepalive_work:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print