====================================== | [ 9.092932][ T193] softirqs last disabled at (54451): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.092934][ T193] Preemption disabled at: | [ 9.092935][ T193] 0x0 | [ 9.092945][ T193] Tainted: [W]=WARN [ 9.092946][ T193] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.092948][ T193] Call Trace: [ 9.092949][ T193] [ 9.092951][ T193] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.092957][ T193] __might_resched.cold (kernel/sched/core.c:9234) [ 9.092962][ T193] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.092966][ T193] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.092971][ T193] __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)) [ 9.092973][ T193] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.092979][ T193] ? 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) [ 9.092982][ T193] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.092985][ T193] put_chars (drivers/char/virtio_console.c:1176) [ 9.092988][ T193] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.092989][ T193] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.092994][ T193] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.092999][ T193] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.093005][ T193] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.093007][ T193] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.093009][ T193] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.093013][ T193] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.093017][ T193] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.093019][ T193] ? 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)) [ 9.093022][ T193] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.093025][ T193] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.093028][ T193] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.093032][ T193] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.093034][ T193] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.093039][ T193] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.093042][ T193] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.093044][ T193] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.093046][ T193] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.093050][ T193] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.093051][ T193] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.093055][ T193] vprintk_emit (kernel/printk/printk.c:2479) [ 9.093058][ T193] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.093062][ T193] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.093065][ T193] _printk (kernel/printk/printk.c:2504) [ 9.093069][ T193] ? snapshot_read.cold (user.c:?) [ 9.093072][ T193] ? 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) [ 9.093074][ T193] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.093078][ T193] ? 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) [ 9.093081][ T193] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.093085][ T193] ? exit_notify (kernel/exit.c:780) [ 9.093087][ T193] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.093089][ T193] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.093093][ T193] do_group_exit (kernel/exit.c:1151) [ 9.093096][ T193] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.093098][ T193] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.093100][ T193] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.093103][ T193] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.093106][ T193] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.093108][ T193] RIP: 0033:0x7fa18e3421b8 [ 9.093111][ T193] Code: Unable to access opcode bytes at 0x7fa18e34218e. Code starting with the faulting instruction =========================================== [ 9.093112][ T193] RSP: 002b:00007ffcacbee2b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.093114][ T193] RAX: ffffffffffffffda RBX: 00007fa18e472f88 RCX: 00007fa18e3421b8 [ 9.093116][ T193] RDX: 00007fa18e08cfc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.093117][ T193] RBP: 00007ffcacbee310 R08: 0000000000000000 R09: 0000000000008010 [ 9.093117][ T193] R10: 00007ffcacbee0d0 R11: 0000000000000246 R12: 0000000000000001 [ 9.093118][ T193] R13: 0000000000000000 R14: 00007fa18e471680 R15: 00007fa18e472fa0 | [ 15.112566][ T244] softirqs last disabled at (23538): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 15.112574][ T244] Preemption disabled at: | [ 15.112574][ T244] 0x0 | [ 15.112585][ T244] Tainted: [W]=WARN [ 15.112586][ T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.112587][ T244] Call Trace: [ 15.112588][ T244] [ 15.112590][ T244] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 15.112597][ T244] __might_resched.cold (kernel/sched/core.c:9234) [ 15.112601][ T244] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 15.112606][ T244] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 15.112611][ T244] __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)) [ 15.112613][ T244] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 15.112619][ T244] ? 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) [ 15.112622][ T244] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 15.112625][ T244] put_chars (drivers/char/virtio_console.c:1176) [ 15.112628][ T244] ? __send_to_port (drivers/char/virtio_console.c:654) [ 15.112629][ T244] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 15.112633][ T244] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 15.112637][ T244] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 15.112640][ T244] ? mark_usage (kernel/locking/lockdep.c:4690) [ 15.112642][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 15.112643][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 15.112647][ T244] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 15.112649][ T244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 15.112653][ T244] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 15.112657][ T244] console_emit_next_record (kernel/printk/printk.c:3183) [ 15.112661][ T244] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 15.112663][ T244] ? 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)) [ 15.112666][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 15.112670][ T244] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 15.112674][ T244] console_flush_one_record (kernel/printk/printk.c:3268) [ 15.112678][ T244] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 15.112680][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 15.112685][ T244] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 15.112688][ T244] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 15.112690][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 15.112692][ T244] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 15.112696][ T244] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 15.112697][ T244] ? vprintk_emit (kernel/printk/printk.c:2478) [ 15.112701][ T244] vprintk_emit (kernel/printk/printk.c:2479) [ 15.112705][ T244] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 15.112707][ T244] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 15.112709][ T244] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 15.112712][ T244] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 15.112716][ T244] _printk (kernel/printk/printk.c:2504) [ 15.112720][ T244] ? snapshot_read.cold (user.c:?) [ 15.112728][ T244] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 15.112738][ T244] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 15.112748][ T244] br_device_event (net/bridge/br.c:111) bridge [ 15.112755][ T244] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 15.112761][ T244] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 15.112768][ T244] notifier_call_chain (kernel/notifier.c:85) [ 15.112773][ T244] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 15.112778][ T244] ? netif_change_name (net/core/dev.c:1517) [ 15.112782][ T244] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 15.112785][ T244] ? __kernel_text_address (kernel/extable.c:79) [ 15.112787][ T244] ? write_profile (profile.c:?) [ 15.112790][ T244] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 15.112794][ T244] netif_change_flags (net/core/dev.c:9882) [ 15.112798][ T244] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 15.112802][ T244] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 15.112804][ T244] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 15.112805][ T244] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 15.112807][ T244] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 15.112810][ T244] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 15.112813][ T244] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 15.112815][ T244] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 15.112817][ T244] ? kasan_save_stack (mm/kasan/common.c:58) [ 15.112820][ T244] ? kasan_save_stack (mm/kasan/common.c:57) [ 15.112822][ T244] ? kasan_save_track (mm/kasan/common.c:78) [ 15.112825][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 15.112827][ T244] ? netlink_seq_next (net/netlink/af_netlink.c:2684) [ 15.112830][ T244] ? ___sys_sendmsg (net/socket.c:2757) [ 15.112834][ T244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 15.112836][ T244] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 15.112839][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 15.112841][ T244] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 15.112843][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 15.112844][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 15.112847][ T244] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 15.112851][ T244] ? __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) [ 15.112852][ T244] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 15.112854][ T244] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 15.112858][ T244] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 15.112863][ T244] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 15.112868][ T244] rtnl_newlink (net/core/rtnetlink.c:4215) [ 15.112874][ T244] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 15.112876][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 15.112880][ T244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 15.112882][ T244] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 15.112889][ T244] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 15.112891][ T244] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 15.112895][ T244] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 15.112897][ T244] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 15.112900][ T244] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 15.112901][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 15.112906][ T244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 15.112908][ T244] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 15.112911][ T244] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 15.112913][ T244] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 15.112916][ T244] ? netlink_ack (./include/linux/skbuff.h:2718) [ 15.112922][ T244] ? 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)) [ 15.112923][ T244] ? 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)) [ 15.112928][ T244] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 15.112931][ T244] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 15.112934][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 15.112938][ T244] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 15.112942][ T244] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 15.112946][ T244] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 15.112952][ T244] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 15.112954][ T244] ? copy_msghdr_from_user (net/socket.c:2650) [ 15.112956][ T244] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 15.112958][ T244] ? move_addr_to_kernel (net/socket.c:258) [ 15.112965][ T244] ___sys_sendmsg (net/socket.c:2767) [ 15.112968][ T244] ? copy_msghdr_from_user (net/socket.c:2619) [ 15.112984][ T244] __sys_sendmsg (net/socket.c:2799) [ 15.112987][ T244] ? __sys_sendmsg_sock (net/socket.c:2780) [ 15.112994][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 15.112997][ T244] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 15.113000][ T244] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 15.113003][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 15.113005][ T244] RIP: 0033:0x7f60c446b54e [ 15.113007][ T244] 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 [ 15.113009][ T244] RSP: 002b:00007ffd39ef7b90 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 15.113012][ T244] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f60c446b54e [ 15.113013][ T244] RDX: 0000000000000000 RSI: 00007ffd39ef7c40 RDI: 0000000000000005 [ 15.113014][ T244] RBP: 00007ffd39ef7ba0 R08: 0000000000000000 R09: 0000000000000000 [ 15.113015][ T244] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a918ee9 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