====================================== | [ 9.892989][ T129] softirqs last disabled at (8215): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.892992][ T129] Preemption disabled at: | [ 9.892993][ T129] 0x0 | [ 9.893006][ T129] Tainted: [W]=WARN [ 9.893007][ T129] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.893009][ T129] Call Trace: [ 9.893012][ T129] [ 9.893014][ T129] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.893023][ T129] __might_resched.cold (kernel/sched/core.c:9234) [ 9.893029][ T129] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.893034][ T129] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.893042][ T129] __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)) [ 9.893046][ T129] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.893055][ T129] ? 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) [ 9.893059][ T129] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.893064][ T129] put_chars (drivers/char/virtio_console.c:1176) [ 9.893069][ T129] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.893071][ T129] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.893077][ T129] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.893087][ T129] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.893098][ T129] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.893101][ T129] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.893105][ T129] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.893112][ T129] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.893119][ T129] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.893121][ T129] ? 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)) [ 9.893127][ T129] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.893130][ T129] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.893137][ T129] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.893144][ T129] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.893147][ T129] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.893157][ T129] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.893161][ T129] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.893164][ T129] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.893168][ T129] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.893173][ T129] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.893183][ T129] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.893189][ T129] vprintk_emit (kernel/printk/printk.c:2479) [ 9.893195][ T129] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.893201][ T129] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.893208][ T129] _printk (kernel/printk/printk.c:2504) [ 9.893213][ T129] ? snapshot_read.cold (user.c:?) [ 9.893218][ T129] ? 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) [ 9.893222][ T129] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.893229][ T129] ? 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) [ 9.893234][ T129] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.893239][ T129] ? exit_notify (kernel/exit.c:780) [ 9.893242][ T129] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.893247][ T129] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.893255][ T129] do_group_exit (kernel/exit.c:1151) [ 9.893260][ T129] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.893263][ T129] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.893266][ T129] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.893270][ T129] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.893275][ T129] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.893279][ T129] RIP: 0033:0x7f552a0901b8 [ 9.893282][ T129] Code: Unable to access opcode bytes at 0x7f552a09018e. Code starting with the faulting instruction =========================================== [ 9.893284][ T129] RSP: 002b:00007ffdd7253858 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.893287][ T129] RAX: ffffffffffffffda RBX: 00007f552a1c0f88 RCX: 00007f552a0901b8 [ 9.893290][ T129] RDX: 00007f5529fcda48 RSI: ffffffffffffffb0 RDI: 0000000000000000 [ 9.893291][ T129] RBP: 00007ffdd72538b0 R08: 0000000000000000 R09: 0000000000001010 [ 9.893293][ T129] R10: 00007ffdd7253710 R11: 0000000000000246 R12: 0000000000000002 [ 9.893294][ T129] R13: 0000000000000000 R14: 00007f552a1bf680 R15: 00007f552a1c0fa0 | [ 11.377338][ T217] softirqs last disabled at (11195): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 11.377341][ T217] Preemption disabled at: | [ 11.377341][ T217] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.377350][ T217] Tainted: [W]=WARN [ 11.377351][ T217] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.377353][ T217] Call Trace: [ 11.377355][ T217] [ 11.377356][ T217] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.377362][ T217] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.377365][ T217] __might_resched.cold (kernel/sched/core.c:9234) [ 11.377369][ T217] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.377374][ T217] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.377379][ T217] __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)) [ 11.377381][ T217] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.377387][ T217] ? 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) [ 11.377390][ T217] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.377393][ T217] put_chars (drivers/char/virtio_console.c:1176) [ 11.377396][ T217] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.377401][ T217] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.377405][ T217] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.377407][ T217] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.377409][ T217] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.377411][ T217] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.377415][ T217] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.377417][ T217] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.377420][ T217] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.377425][ T217] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.377429][ T217] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.377432][ T217] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.377434][ T217] ? 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)) [ 11.377438][ T217] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.377440][ T217] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.377444][ T217] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.377449][ T217] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.377451][ T217] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.377456][ T217] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.377459][ T217] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.377461][ T217] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.377463][ T217] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 11.377467][ T217] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.377469][ T217] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.377473][ T217] vprintk_emit (kernel/printk/printk.c:2479) [ 11.377477][ T217] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.377479][ T217] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.377481][ T217] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.377485][ T217] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.377489][ T217] _printk (kernel/printk/printk.c:2504) [ 11.377493][ T217] ? snapshot_read.cold (user.c:?) [ 11.377497][ T217] ? br_multicast_flood (??:?) bridge [ 11.377510][ T217] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.377512][ T217] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.377513][ T217] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.377518][ T217] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 11.377528][ T217] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 11.377536][ T217] new_nbp (net/bridge/br_if.c:449) bridge [ 11.377546][ T217] br_add_if (net/bridge/br_if.c:592) bridge [ 11.377553][ T217] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 11.377557][ T217] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.377561][ T217] ? __kernel_text_address (kernel/extable.c:79) [ 11.377565][ T217] do_set_master (net/core/rtnetlink.c:3071) [ 11.377570][ T217] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.377573][ T217] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.377577][ T217] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.377578][ T217] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.377580][ T217] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.377584][ T217] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.377587][ T217] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.377589][ T217] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.377592][ T217] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.377595][ T217] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.377596][ T217] ? kasan_save_track (mm/kasan/common.c:78) [ 11.377599][ T217] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.377601][ T217] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 11.377604][ T217] ? ___sys_sendmsg (net/socket.c:2757) [ 11.377609][ T217] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.377611][ T217] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.377614][ T217] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.377616][ T217] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.377618][ T217] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.377620][ T217] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.377622][ T217] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.377626][ T217] ? __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) [ 11.377628][ T217] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.377630][ T217] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.377633][ T217] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.377635][ T217] ? nla_get_range_signed (lib/nlattr.c:270) [ 11.377640][ T217] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.377646][ T217] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.377652][ T217] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.377654][ T217] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.377659][ T217] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.377660][ T217] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.377663][ T217] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.377665][ T217] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.377668][ T217] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.377671][ T217] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.377674][ T217] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.377675][ T217] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.377680][ T217] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.377682][ T217] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.377685][ T217] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.377687][ T217] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.377691][ T217] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.377697][ T217] ? 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)) [ 11.377699][ T217] ? 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)) [ 11.377703][ T217] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.377707][ T217] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.377710][ T217] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.377714][ T217] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.377718][ T217] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.377722][ T217] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.377730][ T217] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 11.377733][ T217] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.377735][ T217] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 11.377737][ T217] ? move_addr_to_kernel (net/socket.c:258) [ 11.377745][ T217] ___sys_sendmsg (net/socket.c:2767) [ 11.377747][ T217] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.377764][ T217] __sys_sendmsg (net/socket.c:2799) [ 11.377767][ T217] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.377774][ T217] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.377778][ T217] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.377780][ T217] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.377783][ T217] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.377786][ T217] RIP: 0033:0x7f385611954e [ 11.377789][ T217] 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 [ 11.377791][ T217] RSP: 002b:00007ffd041d8a20 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.377794][ T217] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f385611954e [ 11.377795][ T217] RDX: 0000000000000000 RSI: 00007ffd041d8ad0 RDI: 0000000000000005 [ 11.377796][ T217] RBP: 00007ffd041d8a30 R08: 0000000000000000 R09: 0000000000000000 [ 11.377797][ T217] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a910694 [ 11.377798][ T217] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd041d9190 | [ 17.089622][ T262] softirqs last disabled at (16362): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 17.089630][ T262] Preemption disabled at: | [ 17.089631][ T262] 0x0 | [ 17.089640][ T262] Tainted: [W]=WARN [ 17.089641][ T262] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.089642][ T262] Call Trace: [ 17.089644][ T262] [ 17.089646][ T262] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 17.089652][ T262] __might_resched.cold (kernel/sched/core.c:9234) [ 17.089657][ T262] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 17.089661][ T262] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 17.089666][ T262] __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)) [ 17.089669][ T262] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 17.089674][ T262] ? 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) [ 17.089677][ T262] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 17.089680][ T262] put_chars (drivers/char/virtio_console.c:1176) [ 17.089683][ T262] ? __send_to_port (drivers/char/virtio_console.c:654) [ 17.089685][ T262] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 17.089689][ T262] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 17.089692][ T262] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 17.089695][ T262] ? mark_usage (kernel/locking/lockdep.c:4690) [ 17.089697][ T262] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 17.089698][ T262] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 17.089703][ T262] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 17.089704][ T262] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 17.089708][ T262] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 17.089712][ T262] console_emit_next_record (kernel/printk/printk.c:3183) [ 17.089716][ T262] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 17.089718][ T262] ? 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)) [ 17.089721][ T262] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 17.089727][ T262] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 17.089731][ T262] console_flush_one_record (kernel/printk/printk.c:3268) [ 17.089735][ T262] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 17.089737][ T262] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 17.089742][ T262] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 17.089745][ T262] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 17.089747][ T262] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 17.089749][ T262] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 17.089753][ T262] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 17.089754][ T262] ? vprintk_emit (kernel/printk/printk.c:2478) [ 17.089758][ T262] vprintk_emit (kernel/printk/printk.c:2479) [ 17.089762][ T262] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 17.089764][ T262] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 17.089766][ T262] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 17.089769][ T262] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 17.089773][ T262] _printk (kernel/printk/printk.c:2504) [ 17.089777][ T262] ? snapshot_read.cold (user.c:?) [ 17.089785][ T262] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 17.089796][ T262] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 17.089805][ T262] br_device_event (net/bridge/br.c:111) bridge [ 17.089813][ T262] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 17.089818][ T262] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 17.089824][ T262] notifier_call_chain (kernel/notifier.c:85) [ 17.089830][ T262] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 17.089834][ T262] ? netif_change_name (net/core/dev.c:1517) [ 17.089838][ T262] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 17.089841][ T262] ? __kernel_text_address (kernel/extable.c:79) [ 17.089844][ T262] ? write_profile (profile.c:?) [ 17.089846][ T262] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 17.089851][ T262] netif_change_flags (net/core/dev.c:9882) [ 17.089855][ T262] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 17.089858][ T262] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 17.089860][ T262] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 17.089862][ T262] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 17.089863][ T262] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 17.089867][ T262] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 17.089869][ T262] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 17.089871][ T262] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 17.089873][ T262] ? kasan_save_stack (mm/kasan/common.c:58) [ 17.089876][ T262] ? kasan_save_stack (mm/kasan/common.c:57) [ 17.089878][ T262] ? kasan_save_track (mm/kasan/common.c:78) [ 17.089881][ T262] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 17.089882][ T262] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 17.089885][ T262] ? ___sys_sendmsg (net/socket.c:2757) [ 17.089890][ T262] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 17.089892][ T262] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 17.089894][ T262] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 17.089897][ T262] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 17.089898][ T262] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 17.089900][ T262] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 17.089902][ T262] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 17.089906][ T262] ? __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) [ 17.089908][ T262] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 17.089910][ T262] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 17.089913][ T262] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 17.089919][ T262] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 17.089924][ T262] rtnl_newlink (net/core/rtnetlink.c:4215) [ 17.089929][ T262] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 17.089931][ T262] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 17.089936][ T262] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 17.089938][ T262] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 17.089940][ T262] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 17.089942][ T262] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 17.089945][ T262] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 17.089947][ T262] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 17.089951][ T262] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 17.089952][ T262] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 17.089956][ T262] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 17.089958][ T262] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 17.089962][ T262] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 17.089964][ T262] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 17.089966][ T262] ? netlink_ack (./include/linux/skbuff.h:2718) [ 17.089973][ T262] ? 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)) [ 17.089974][ T262] ? 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)) [ 17.089978][ T262] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 17.089982][ T262] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 17.089985][ T262] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 17.089989][ T262] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 17.089993][ T262] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 17.089997][ T262] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 17.090002][ T262] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 17.090005][ T262] ? copy_msghdr_from_user (net/socket.c:2650) [ 17.090007][ T262] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 17.090009][ T262] ? move_addr_to_kernel (net/socket.c:258) [ 17.090016][ T262] ___sys_sendmsg (net/socket.c:2767) [ 17.090019][ T262] ? copy_msghdr_from_user (net/socket.c:2619) [ 17.090035][ T262] __sys_sendmsg (net/socket.c:2799) [ 17.090038][ T262] ? __sys_sendmsg_sock (net/socket.c:2780) [ 17.090044][ T262] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 17.090048][ T262] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 17.090051][ T262] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 17.090054][ T262] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 17.090056][ T262] RIP: 0033:0x7f6fb646f54e [ 17.090058][ T262] 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 [ 17.090060][ T262] RSP: 002b:00007ffd14d07510 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 17.090062][ T262] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6fb646f54e [ 17.090064][ T262] RDX: 0000000000000000 RSI: 00007ffd14d075c0 RDI: 0000000000000005 [ 17.090065][ T262] RBP: 00007ffd14d07520 R08: 0000000000000000 R09: 0000000000000000 [ 17.090065][ T262] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91069a 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