====================================== | [ 9.989173][ T186] softirqs last disabled at (45053): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.989175][ T186] Preemption disabled at: | [ 9.989176][ T186] 0x0 | [ 9.989187][ T186] Tainted: [W]=WARN [ 9.989188][ T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.989191][ T186] Call Trace: [ 9.989192][ T186] [ 9.989194][ T186] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.989201][ T186] __might_resched.cold (kernel/sched/core.c:9234) [ 9.989205][ T186] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.989210][ T186] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.989215][ T186] __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)) [ 9.989217][ T186] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.989223][ T186] ? 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) [ 9.989226][ T186] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.989229][ T186] put_chars (drivers/char/virtio_console.c:1176) [ 9.989232][ T186] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.989234][ T186] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.989238][ T186] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.989244][ T186] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.989250][ T186] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.989252][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.989255][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.989259][ T186] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.989263][ T186] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.989264][ T186] ? 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)) [ 9.989268][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.989270][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.989274][ T186] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.989278][ T186] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.989280][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.989285][ T186] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.989288][ T186] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.989290][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.989292][ T186] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.989296][ T186] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.989298][ T186] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.989301][ T186] vprintk_emit (kernel/printk/printk.c:2479) [ 9.989305][ T186] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.989309][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.989312][ T186] _printk (kernel/printk/printk.c:2504) [ 9.989317][ T186] ? snapshot_read.cold (user.c:?) [ 9.989319][ T186] ? 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) [ 9.989322][ T186] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.989326][ T186] ? 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) [ 9.989329][ T186] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.989332][ T186] ? exit_notify (kernel/exit.c:780) [ 9.989334][ T186] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.989337][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.989341][ T186] do_group_exit (kernel/exit.c:1151) [ 9.989344][ T186] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.989346][ T186] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.989348][ T186] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.989352][ T186] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.989355][ T186] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.989357][ T186] RIP: 0033:0x7f2472f981b8 [ 9.989359][ T186] Code: Unable to access opcode bytes at 0x7f2472f9818e. Code starting with the faulting instruction =========================================== [ 9.989361][ T186] RSP: 002b:00007fff419cdc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.989363][ T186] RAX: ffffffffffffffda RBX: 00007f24730c8f88 RCX: 00007f2472f981b8 [ 9.989365][ T186] RDX: 00007f2472ce2fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.989366][ T186] RBP: 00007fff419cdcd0 R08: 0000000000000000 R09: 0000000000008010 [ 9.989367][ T186] R10: 00007fff419cda90 R11: 0000000000000246 R12: 0000000000000001 [ 9.989367][ T186] R13: 0000000000000000 R14: 00007f24730c7680 R15: 00007f24730c8fa0 | [ 11.617326][ T252] softirqs last disabled at (12863): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 11.617328][ T252] Preemption disabled at: | [ 11.617329][ T252] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.617339][ T252] Tainted: [W]=WARN [ 11.617340][ T252] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.617342][ T252] Call Trace: [ 11.617344][ T252] [ 11.617345][ T252] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.617351][ T252] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.617353][ T252] __might_resched.cold (kernel/sched/core.c:9234) [ 11.617358][ T252] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.617362][ T252] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.617367][ T252] __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)) [ 11.617369][ T252] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.617375][ T252] ? 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) [ 11.617377][ T252] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.617381][ T252] put_chars (drivers/char/virtio_console.c:1176) [ 11.617383][ T252] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.617388][ T252] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.617391][ T252] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.617394][ T252] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.617396][ T252] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.617398][ T252] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.617402][ T252] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.617404][ T252] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.617407][ T252] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.617411][ T252] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.617415][ T252] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.617419][ T252] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.617421][ T252] ? 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)) [ 11.617424][ T252] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.617426][ T252] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.617430][ T252] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.617434][ T252] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.617436][ T252] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.617441][ T252] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.617444][ T252] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.617446][ T252] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.617448][ T252] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 11.617452][ T252] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.617454][ T252] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.617457][ T252] vprintk_emit (kernel/printk/printk.c:2479) [ 11.617461][ T252] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.617464][ T252] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.617465][ T252] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.617470][ T252] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.617473][ T252] _printk (kernel/printk/printk.c:2504) [ 11.617477][ T252] ? snapshot_read.cold (user.c:?) [ 11.617480][ T252] ? br_multicast_flood (??:?) bridge [ 11.617494][ T252] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.617496][ T252] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.617497][ T252] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.617501][ T252] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 11.617511][ T252] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 11.617520][ T252] new_nbp (net/bridge/br_if.c:449) bridge [ 11.617529][ T252] br_add_if (net/bridge/br_if.c:592) bridge [ 11.617536][ T252] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 11.617540][ T252] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.617543][ T252] ? __kernel_text_address (kernel/extable.c:79) [ 11.617547][ T252] do_set_master (net/core/rtnetlink.c:3071) [ 11.617554][ T252] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.617557][ T252] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.617560][ T252] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.617561][ T252] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.617564][ T252] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.617567][ T252] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.617570][ T252] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.617572][ T252] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.617575][ T252] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.617578][ T252] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.617580][ T252] ? kasan_save_track (mm/kasan/common.c:78) [ 11.617582][ T252] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.617584][ T252] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 11.617587][ T252] ? ___sys_sendmsg (net/socket.c:2757) [ 11.617592][ T252] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.617594][ T252] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.617596][ T252] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.617599][ T252] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.617600][ T252] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.617602][ T252] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.617605][ T252] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.617608][ T252] ? __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) [ 11.617610][ T252] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.617612][ T252] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.617615][ T252] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.617617][ T252] ? nla_get_range_signed (lib/nlattr.c:270) [ 11.617622][ T252] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.617627][ T252] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.617633][ T252] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.617635][ T252] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.617639][ T252] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.617641][ T252] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.617643][ T252] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.617645][ T252] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.617648][ T252] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.617650][ T252] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.617653][ T252] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.617655][ T252] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.617659][ T252] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.617661][ T252] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.617664][ T252] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.617666][ T252] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.617669][ T252] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.617675][ T252] ? 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)) [ 11.617677][ T252] ? 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)) [ 11.617681][ T252] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.617685][ T252] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.617687][ T252] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.617691][ T252] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.617695][ T252] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.617699][ T252] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.617704][ T252] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 11.617706][ T252] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.617709][ T252] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 11.617710][ T252] ? move_addr_to_kernel (net/socket.c:258) [ 11.617718][ T252] ___sys_sendmsg (net/socket.c:2767) [ 11.617721][ T252] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.617736][ T252] __sys_sendmsg (net/socket.c:2799) [ 11.617739][ T252] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.617745][ T252] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.617749][ T252] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.617751][ T252] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.617754][ T252] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.617756][ T252] RIP: 0033:0x7f0492ee554e [ 11.617760][ T252] 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 [ 11.617761][ T252] RSP: 002b:00007ffd5fe38ee0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.617764][ T252] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f0492ee554e [ 11.617766][ T252] RDX: 0000000000000000 RSI: 00007ffd5fe38f90 RDI: 0000000000000005 [ 11.617767][ T252] RBP: 00007ffd5fe38ef0 R08: 0000000000000000 R09: 0000000000000000 [ 11.617768][ T252] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9105d2 [ 11.617768][ T252] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd5fe39650 | [ 23.065317][ T357] softirqs last disabled at (20884): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 23.065325][ T357] Preemption disabled at: | [ 23.065326][ T357] 0x0 | [ 23.065336][ T357] Tainted: [W]=WARN [ 23.065337][ T357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.065339][ T357] Call Trace: [ 23.065341][ T357] [ 23.065343][ T357] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 23.065350][ T357] __might_resched.cold (kernel/sched/core.c:9234) [ 23.065354][ T357] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 23.065359][ T357] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 23.065364][ T357] __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)) [ 23.065366][ T357] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 23.065372][ T357] ? 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) [ 23.065375][ T357] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 23.065378][ T357] put_chars (drivers/char/virtio_console.c:1176) [ 23.065381][ T357] ? __send_to_port (drivers/char/virtio_console.c:654) [ 23.065383][ T357] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 23.065387][ T357] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 23.065390][ T357] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 23.065393][ T357] ? mark_usage (kernel/locking/lockdep.c:4690) [ 23.065395][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 23.065397][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 23.065401][ T357] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 23.065402][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 23.065407][ T357] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 23.065411][ T357] console_emit_next_record (kernel/printk/printk.c:3183) [ 23.065415][ T357] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 23.065417][ T357] ? 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)) [ 23.065420][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 23.065424][ T357] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 23.065428][ T357] console_flush_one_record (kernel/printk/printk.c:3268) [ 23.065432][ T357] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 23.065434][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 23.065439][ T357] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 23.065442][ T357] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 23.065444][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 23.065446][ T357] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 23.065450][ T357] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 23.065452][ T357] ? vprintk_emit (kernel/printk/printk.c:2478) [ 23.065455][ T357] vprintk_emit (kernel/printk/printk.c:2479) [ 23.065460][ T357] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 23.065462][ T357] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 23.065464][ T357] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 23.065467][ T357] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 23.065471][ T357] _printk (kernel/printk/printk.c:2504) [ 23.065475][ T357] ? snapshot_read.cold (user.c:?) [ 23.065483][ T357] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 23.065494][ T357] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 23.065504][ T357] br_device_event (net/bridge/br.c:111) bridge [ 23.065512][ T357] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 23.065516][ T357] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 23.065522][ T357] notifier_call_chain (kernel/notifier.c:85) [ 23.065528][ T357] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 23.065533][ T357] ? netif_change_name (net/core/dev.c:1517) [ 23.065537][ T357] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 23.065540][ T357] ? __kernel_text_address (kernel/extable.c:79) [ 23.065542][ T357] ? write_profile (profile.c:?) [ 23.065544][ T357] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 23.065549][ T357] netif_change_flags (net/core/dev.c:9882) [ 23.065553][ T357] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 23.065557][ T357] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 23.065559][ T357] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 23.065561][ T357] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 23.065562][ T357] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 23.065566][ T357] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 23.065569][ T357] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 23.065571][ T357] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 23.065573][ T357] ? kasan_save_stack (mm/kasan/common.c:58) [ 23.065576][ T357] ? kasan_save_stack (mm/kasan/common.c:57) [ 23.065578][ T357] ? kasan_save_track (mm/kasan/common.c:78) [ 23.065581][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 23.065583][ T357] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 23.065586][ T357] ? ___sys_sendmsg (net/socket.c:2757) [ 23.065590][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 23.065592][ T357] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 23.065595][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 23.065597][ T357] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 23.065599][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 23.065601][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 23.065603][ T357] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 23.065607][ T357] ? __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) [ 23.065609][ T357] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 23.065611][ T357] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 23.065614][ T357] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 23.065620][ T357] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 23.065625][ T357] rtnl_newlink (net/core/rtnetlink.c:4215) [ 23.065633][ T357] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 23.065635][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 23.065639][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 23.065641][ T357] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 23.065643][ T357] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 23.065645][ T357] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 23.065649][ T357] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 23.065651][ T357] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 23.065654][ T357] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 23.065656][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 23.065660][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 23.065662][ T357] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 23.065666][ T357] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 23.065668][ T357] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 23.065671][ T357] ? netlink_ack (./include/linux/skbuff.h:2718) [ 23.065677][ T357] ? 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)) [ 23.065679][ T357] ? 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)) [ 23.065683][ T357] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 23.065687][ T357] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 23.065690][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 23.065694][ T357] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 23.065698][ T357] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 23.065702][ T357] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 23.065708][ T357] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 23.065710][ T357] ? copy_msghdr_from_user (net/socket.c:2650) [ 23.065713][ T357] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 23.065714][ T357] ? move_addr_to_kernel (net/socket.c:258) [ 23.065722][ T357] ___sys_sendmsg (net/socket.c:2767) [ 23.065725][ T357] ? copy_msghdr_from_user (net/socket.c:2619) [ 23.065741][ T357] __sys_sendmsg (net/socket.c:2799) [ 23.065744][ T357] ? __sys_sendmsg_sock (net/socket.c:2780) [ 23.065751][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 23.065754][ T357] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 23.065757][ T357] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 23.065760][ T357] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 23.065763][ T357] RIP: 0033:0x7f376169c54e [ 23.065765][ T357] 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 [ 23.065767][ T357] RSP: 002b:00007fff6949b900 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 23.065770][ T357] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f376169c54e [ 23.065771][ T357] RDX: 0000000000000000 RSI: 00007fff6949b9b0 RDI: 0000000000000005 [ 23.065772][ T357] RBP: 00007fff6949b910 R08: 0000000000000000 R09: 0000000000000000 [ 23.065773][ T357] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9105dd Finger prints: br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print __irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars __irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print