====================================== | [ 10.491031][ T196] softirqs last disabled at (47474): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499) | [ 10.491033][ T196] Preemption disabled at: | [ 10.491034][ T196] vprintk_emit (kernel/printk/printk.c:2471) | [ 10.491043][ T196] Tainted: [W]=WARN [ 10.491044][ T196] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.491046][ T196] Call Trace: [ 10.491047][ T196] [ 10.491049][ T196] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.491054][ T196] ? vprintk_emit (kernel/printk/printk.c:2471) [ 10.491056][ T196] __might_resched.cold (kernel/sched/core.c:9234) [ 10.491061][ T196] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.491065][ T196] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.491070][ T196] __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)) [ 10.491072][ T196] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.491077][ T196] ? 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) [ 10.491079][ T196] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.491082][ T196] put_chars (drivers/char/virtio_console.c:1176) [ 10.491085][ T196] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.491088][ T196] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 10.491093][ T196] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.491095][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491100][ T196] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.491103][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.491109][ T196] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.491112][ T196] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.491116][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.491118][ T196] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.491122][ T196] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.491126][ T196] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.491128][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491133][ T196] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.491135][ T196] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.491137][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.491139][ T196] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.491142][ T196] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.491144][ T196] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.491147][ T196] vprintk_emit (kernel/printk/printk.c:2479) [ 10.491150][ T196] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.491152][ T196] ? write_profile (profile.c:?) [ 10.491155][ T196] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 10.491162][ T196] dev_vprintk_emit (drivers/base/core.c:5000) [ 10.491167][ T196] ? device_rename.cold (drivers/base/core.c:4612 (discriminator 13)) [ 10.491171][ T196] ? filter_irq_stacks (kernel/stacktrace.c:402) [ 10.491177][ T196] dev_printk_emit (drivers/base/core.c:5011) [ 10.491179][ T196] ? dev_vprintk_emit (drivers/base/core.c:5001) [ 10.491184][ T196] ? check_prev_add (kernel/locking/lockdep.c:3258 (discriminator 3)) [ 10.491188][ T196] __netdev_printk (net/core/dev.c:13140 (discriminator 4)) [ 10.491194][ T196] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 10.491196][ T196] ? netdev_notice (net/core/dev.c:13194) [ 10.491198][ T196] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.491202][ T196] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.491204][ T196] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 10.491207][ T196] ? do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 10.491210][ T196] netif_change_name.cold (net/core/dev.c:1507 (discriminator 3)) [ 10.491218][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491219][ T196] ? rwsem_optimistic_spin (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:4434 kernel/locking/rwsem.c:245 kernel/locking/rwsem.c:898) [ 10.491221][ T196] ? find_held_lock (kernel/locking/lockdep.c:5360) [ 10.491225][ T196] ? netdev_adjacent_rename_links (net/core/dev.c:9598) [ 10.491227][ T196] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.491230][ T196] ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1)) [ 10.491236][ T196] do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 10.491238][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491241][ T196] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 10.491243][ T196] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.491244][ T196] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.491247][ T196] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.491249][ T196] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.491253][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491257][ T196] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.491259][ T196] ? rtnl_setlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:3586) [ 10.491262][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.491264][ T196] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.491265][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.491267][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.491269][ T196] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 10.491271][ T196] ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821) [ 10.491274][ T196] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 10.491276][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491277][ T196] ? rtnl_setlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:3586) [ 10.491280][ T196] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.491282][ T196] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 10.491284][ T196] ? nla_get_range_signed (lib/nlattr.c:270) [ 10.491290][ T196] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.491292][ T196] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 10.491300][ T196] rtnl_setlink (net/core/rtnetlink.c:3596) [ 10.491303][ T196] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 10.491305][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491326][ T196] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.491328][ T196] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.491331][ T196] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.491333][ T196] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.491334][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491339][ T196] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.491340][ T196] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.491342][ T196] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 10.491344][ T196] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.491348][ T196] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 10.491350][ T196] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.491353][ T196] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.491355][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491359][ T196] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.491361][ T196] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.491365][ T196] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 10.491368][ T196] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.491371][ T196] ? netlink_ack (./include/linux/skbuff.h:2718) [ 10.491377][ T196] ? 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)) [ 10.491379][ T196] ? 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)) [ 10.491384][ T196] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 10.491388][ T196] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 10.491390][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.491395][ T196] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 10.491399][ T196] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 10.491403][ T196] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 10.491406][ T196] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 10.491409][ T196] __sys_sendto (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2281 (discriminator 4)) [ 10.491413][ T196] ? __ia32_sys_getpeername (net/socket.c:2235) [ 10.491426][ T196] __x64_sys_sendto (net/socket.c:2288 net/socket.c:2284 net/socket.c:2284) [ 10.491428][ T196] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 10.491432][ T196] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 10.491435][ T196] ? do_syscall_64 (arch/x86/entry/syscall_64.c:81 (discriminator 44)) [ 10.491436][ T196] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.491438][ T196] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.491440][ T196] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.491443][ T196] RIP: 0033:0x7feb195ef54e [ 10.491447][ T196] 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 [ 10.491448][ T196] RSP: 002b:00007ffd815e6860 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 10.491451][ T196] RAX: ffffffffffffffda RBX: 000055fc00335a00 RCX: 00007feb195ef54e [ 10.491453][ T196] RDX: 0000000000000030 RSI: 000055fc00343790 RDI: 0000000000000012 [ 10.491453][ T196] RBP: 00007ffd815e6870 R08: 00007ffd815e68c0 R09: 0000000000000080 [ 10.491454][ T196] R10: 0000000000000000 R11: 0000000000000202 R12: 000055fc00343360 [ 10.491455][ T196] R13: 00007ffd815e69a4 R14: 0000000000000000 R15: 0000000000000000 | [ 14.895915][ T196] softirqs last disabled at (84662): netlink_release (./include/net/sock.h:2138 net/netlink/af_netlink.c:727) | [ 14.895918][ T196] Preemption disabled at: | [ 14.895918][ T196] 0x0 | [ 14.895929][ T196] Tainted: [W]=WARN [ 14.895930][ T196] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.895932][ T196] Call Trace: [ 14.895934][ T196] [ 14.895935][ T196] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 14.895942][ T196] __might_resched.cold (kernel/sched/core.c:9234) [ 14.895947][ T196] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 14.895951][ T196] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 14.895959][ T196] __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)) [ 14.895961][ T196] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 14.895967][ T196] ? 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) [ 14.895969][ T196] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 14.895973][ T196] put_chars (drivers/char/virtio_console.c:1176) [ 14.895975][ T196] ? __send_to_port (drivers/char/virtio_console.c:654) [ 14.895977][ T196] ? printk_get_next_message (kernel/printk/printk.c:3072) [ 14.895980][ T196] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 14.895983][ T196] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 14.895988][ T196] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 14.895990][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 14.895992][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 14.895996][ T196] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 14.896000][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 14.896003][ T196] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 14.896007][ T196] console_emit_next_record (kernel/printk/printk.c:3183) [ 14.896011][ T196] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 14.896015][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 14.896017][ T196] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 14.896021][ T196] console_flush_one_record (kernel/printk/printk.c:3268) [ 14.896025][ T196] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 14.896027][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 14.896032][ T196] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 14.896035][ T196] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 14.896037][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 14.896039][ T196] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 14.896043][ T196] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 14.896044][ T196] ? vprintk_emit (kernel/printk/printk.c:2478) [ 14.896048][ T196] vprintk_emit (kernel/printk/printk.c:2479) [ 14.896052][ T196] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 14.896055][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 14.896059][ T196] _printk (kernel/printk/printk.c:2504) [ 14.896063][ T196] ? snapshot_read.cold (user.c:?) [ 14.896066][ T196] ? 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) [ 14.896068][ T196] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 14.896072][ T196] ? 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) [ 14.896075][ T196] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 14.896079][ T196] ? exit_notify (kernel/exit.c:780) [ 14.896081][ T196] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 14.896084][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 14.896088][ T196] do_group_exit (kernel/exit.c:1151) [ 14.896092][ T196] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 14.896094][ T196] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 14.896096][ T196] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 14.896099][ T196] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 14.896103][ T196] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 14.896106][ T196] RIP: 0033:0x7feb196401b8 [ 14.896108][ T196] Code: Unable to access opcode bytes at 0x7feb1964018e. Code starting with the faulting instruction =========================================== [ 14.896109][ T196] RSP: 002b:00007ffd815e6db8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.896112][ T196] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feb196401b8 [ 14.896113][ T196] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.896114][ T196] RBP: 00007ffd815e6f40 R08: 000055fc0032f848 R09: 0000000000000000 [ 14.896115][ T196] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 Finger prints: netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars netlink_release:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print