====================================== | [ 10.262994][ T199] softirqs last disabled at (39255): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 10.262996][ T199] Preemption disabled at: | [ 10.262997][ T199] 0x0 | [ 10.263007][ T199] Tainted: [W]=WARN [ 10.263008][ T199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.263010][ T199] Call Trace: [ 10.263012][ T199] [ 10.263013][ T199] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.263023][ T199] __might_resched.cold (kernel/sched/core.c:9234) [ 10.263028][ T199] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.263032][ T199] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.263038][ T199] __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)) [ 10.263041][ T199] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.263048][ T199] ? 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) [ 10.263051][ T199] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.263055][ T199] put_chars (drivers/char/virtio_console.c:1176) [ 10.263058][ T199] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.263059][ T199] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.263064][ T199] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.263070][ T199] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.263077][ T199] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.263080][ T199] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.263083][ T199] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.263087][ T199] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.263092][ T199] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.263094][ T199] ? 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)) [ 10.263097][ T199] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.263100][ T199] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.263105][ T199] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.263109][ T199] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.263111][ T199] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.263117][ T199] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.263120][ T199] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.263122][ T199] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.263125][ T199] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.263129][ T199] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.263131][ T199] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.263134][ T199] vprintk_emit (kernel/printk/printk.c:2479) [ 10.263138][ T199] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.263142][ T199] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.263145][ T199] _printk (kernel/printk/printk.c:2504) [ 10.263149][ T199] ? snapshot_read.cold (user.c:?) [ 10.263152][ T199] ? 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) [ 10.263155][ T199] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 10.263159][ T199] ? 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) [ 10.263162][ T199] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 10.263166][ T199] ? exit_notify (kernel/exit.c:780) [ 10.263168][ T199] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.263171][ T199] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.263176][ T199] do_group_exit (kernel/exit.c:1151) [ 10.263179][ T199] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 10.263181][ T199] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 10.263183][ T199] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.263187][ T199] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.263190][ T199] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.263192][ T199] RIP: 0033:0x7fcbe9f3c1b8 [ 10.263195][ T199] Code: Unable to access opcode bytes at 0x7fcbe9f3c18e. Code starting with the faulting instruction =========================================== [ 10.263196][ T199] RSP: 002b:00007fff59fb92a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.263198][ T199] RAX: ffffffffffffffda RBX: 00007fcbea06cf88 RCX: 00007fcbe9f3c1b8 [ 10.263200][ T199] RDX: 00007fcbe9c86fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 10.263201][ T199] RBP: 00007fff59fb9300 R08: 0000000000000000 R09: 0000000000008010 [ 10.263202][ T199] R10: 00007fff59fb90c0 R11: 0000000000000246 R12: 0000000000000001 [ 10.263203][ T199] R13: 0000000000000000 R14: 00007fcbea06b680 R15: 00007fcbea06cfa0 | [ 16.379219][ T255] softirqs last disabled at (16376): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 16.379227][ T255] Preemption disabled at: | [ 16.379228][ T255] 0x0 | [ 16.379237][ T255] Tainted: [W]=WARN [ 16.379238][ T255] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.379240][ T255] Call Trace: [ 16.379242][ T255] [ 16.379243][ T255] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 16.379249][ T255] __might_resched.cold (kernel/sched/core.c:9234) [ 16.379254][ T255] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 16.379258][ T255] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 16.379264][ T255] __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)) [ 16.379266][ T255] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 16.379272][ T255] ? 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) [ 16.379274][ T255] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 16.379278][ T255] put_chars (drivers/char/virtio_console.c:1176) [ 16.379281][ T255] ? __send_to_port (drivers/char/virtio_console.c:654) [ 16.379282][ T255] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 16.379286][ T255] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 16.379290][ T255] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 16.379293][ T255] ? mark_usage (kernel/locking/lockdep.c:4690) [ 16.379294][ T255] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 16.379296][ T255] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 16.379300][ T255] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 16.379301][ T255] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 16.379306][ T255] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 16.379310][ T255] console_emit_next_record (kernel/printk/printk.c:3183) [ 16.379314][ T255] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 16.379316][ T255] ? 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)) [ 16.379319][ T255] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 16.379323][ T255] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 16.379327][ T255] console_flush_one_record (kernel/printk/printk.c:3268) [ 16.379331][ T255] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 16.379333][ T255] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 16.379338][ T255] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 16.379341][ T255] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 16.379343][ T255] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 16.379345][ T255] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 16.379349][ T255] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 16.379351][ T255] ? vprintk_emit (kernel/printk/printk.c:2478) [ 16.379354][ T255] vprintk_emit (kernel/printk/printk.c:2479) [ 16.379358][ T255] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 16.379360][ T255] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 16.379363][ T255] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 16.379365][ T255] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 16.379370][ T255] _printk (kernel/printk/printk.c:2504) [ 16.379373][ T255] ? snapshot_read.cold (user.c:?) [ 16.379381][ T255] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 16.379393][ T255] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 16.379402][ T255] br_device_event (net/bridge/br.c:111) bridge [ 16.379410][ T255] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 16.379414][ T255] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 16.379420][ T255] notifier_call_chain (kernel/notifier.c:85) [ 16.379426][ T255] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 16.379431][ T255] ? netif_change_name (net/core/dev.c:1517) [ 16.379434][ T255] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 16.379438][ T255] ? __kernel_text_address (kernel/extable.c:79) [ 16.379440][ T255] ? write_profile (profile.c:?) [ 16.379442][ T255] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 16.379447][ T255] netif_change_flags (net/core/dev.c:9882) [ 16.379451][ T255] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 16.379454][ T255] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 16.379456][ T255] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 16.379458][ T255] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 16.379460][ T255] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 16.379463][ T255] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 16.379466][ T255] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 16.379468][ T255] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 16.379470][ T255] ? kasan_save_stack (mm/kasan/common.c:58) [ 16.379473][ T255] ? kasan_save_stack (mm/kasan/common.c:57) [ 16.379475][ T255] ? kasan_save_track (mm/kasan/common.c:78) [ 16.379478][ T255] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 16.379479][ T255] ? netlink_seq_next (net/netlink/af_netlink.c:2684) [ 16.379483][ T255] ? ___sys_sendmsg (net/socket.c:2757) [ 16.379487][ T255] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 16.379489][ T255] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 16.379492][ T255] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 16.379494][ T255] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 16.379496][ T255] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 16.379498][ T255] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 16.379500][ T255] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 16.379504][ T255] ? __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) [ 16.379506][ T255] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 16.379508][ T255] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 16.379511][ T255] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 16.379517][ T255] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 16.379522][ T255] rtnl_newlink (net/core/rtnetlink.c:4215) [ 16.379527][ T255] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 16.379529][ T255] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 16.379534][ T255] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 16.379536][ T255] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 16.379538][ T255] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 16.379540][ T255] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 16.379543][ T255] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 16.379546][ T255] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 16.379549][ T255] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 16.379550][ T255] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 16.379555][ T255] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 16.379557][ T255] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 16.379560][ T255] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 16.379562][ T255] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 16.379565][ T255] ? netlink_ack (./include/linux/skbuff.h:2718) [ 16.379571][ T255] ? 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)) [ 16.379573][ T255] ? 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)) [ 16.379577][ T255] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 16.379581][ T255] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 16.379583][ T255] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 16.379588][ T255] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 16.379591][ T255] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 16.379598][ T255] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 16.379604][ T255] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 16.379607][ T255] ? copy_msghdr_from_user (net/socket.c:2650) [ 16.379609][ T255] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 16.379611][ T255] ? move_addr_to_kernel (net/socket.c:258) [ 16.379618][ T255] ___sys_sendmsg (net/socket.c:2767) [ 16.379621][ T255] ? copy_msghdr_from_user (net/socket.c:2619) [ 16.379637][ T255] __sys_sendmsg (net/socket.c:2799) [ 16.379640][ T255] ? __sys_sendmsg_sock (net/socket.c:2780) [ 16.379647][ T255] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 16.379650][ T255] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 16.379653][ T255] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 16.379656][ T255] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 16.379658][ T255] RIP: 0033:0x7ff8ae5ee54e [ 16.379660][ T255] 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 [ 16.379662][ T255] RSP: 002b:00007ffe9b0fc1c0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 16.379665][ T255] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff8ae5ee54e [ 16.379666][ T255] RDX: 0000000000000000 RSI: 00007ffe9b0fc270 RDI: 0000000000000005 [ 16.379667][ T255] RBP: 00007ffe9b0fc1d0 R08: 0000000000000000 R09: 0000000000000000 [ 16.379668][ T255] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b90b Finger prints: br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print __irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print