====================================== | [ 10.111362][ T196] softirqs last disabled at (28625): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 10.111365][ T196] Preemption disabled at: | [ 10.111365][ T196] 0x0 | [ 10.111375][ T196] Tainted: [W]=WARN [ 10.111376][ T196] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.111378][ T196] Call Trace: [ 10.111380][ T196] [ 10.111381][ T196] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.111388][ T196] __might_resched.cold (kernel/sched/core.c:9234) [ 10.111392][ T196] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.111396][ T196] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.111401][ T196] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 10.111403][ T196] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.111409][ T196] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 10.111411][ T196] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.111414][ T196] put_chars (drivers/char/virtio_console.c:1176) [ 10.111417][ T196] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.111418][ T196] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.111423][ T196] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.111428][ T196] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.111434][ T196] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.111436][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.111439][ T196] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.111443][ T196] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.111446][ T196] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.111448][ T196] ? 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)) [ 10.111451][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.111454][ T196] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.111457][ T196] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.111461][ T196] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.111463][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.111468][ T196] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.111471][ T196] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.111473][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.111475][ T196] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.111479][ T196] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.111480][ T196] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.111484][ T196] vprintk_emit (kernel/printk/printk.c:2479) [ 10.111487][ T196] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.111491][ T196] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.111494][ T196] _printk (kernel/printk/printk.c:2504) [ 10.111498][ T196] ? snapshot_read.cold (user.c:?) [ 10.111501][ T196] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 10.111503][ T196] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 10.111507][ T196] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 10.111509][ T196] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 10.111513][ T196] ? exit_notify (kernel/exit.c:780) [ 10.111515][ T196] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.111518][ T196] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.111522][ T196] do_group_exit (kernel/exit.c:1151) [ 10.111525][ T196] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 10.111526][ T196] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 10.111528][ T196] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.111532][ T196] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.111535][ T196] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.111537][ T196] RIP: 0033:0x7f693192f1b8 [ 10.111539][ T196] Code: Unable to access opcode bytes at 0x7f693192f18e. Code starting with the faulting instruction =========================================== [ 10.111540][ T196] RSP: 002b:00007ffcb3f310a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.111543][ T196] RAX: ffffffffffffffda RBX: 00007f6931a5ff88 RCX: 00007f693192f1b8 [ 10.111544][ T196] RDX: 00007f6931679fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 10.111545][ T196] RBP: 00007ffcb3f31100 R08: 0000000000000000 R09: 0000000000008010 [ 10.111546][ T196] R10: 00007ffcb3f30ec0 R11: 0000000000000246 R12: 0000000000000001 [ 10.111547][ T196] R13: 0000000000000000 R14: 00007f6931a5e680 R15: 00007f6931a5ffa0 | [ 11.563322][ T254] softirqs last disabled at (11329): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 11.563324][ T254] Preemption disabled at: | [ 11.563325][ T254] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.563335][ T254] Tainted: [W]=WARN [ 11.563335][ T254] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.563337][ T254] Call Trace: [ 11.563339][ T254] [ 11.563341][ T254] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.563347][ T254] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.563349][ T254] __might_resched.cold (kernel/sched/core.c:9234) [ 11.563354][ T254] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.563358][ T254] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.563363][ T254] __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)) [ 11.563365][ T254] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.563371][ T254] ? 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) [ 11.563374][ T254] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.563377][ T254] put_chars (drivers/char/virtio_console.c:1176) [ 11.563380][ T254] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.563384][ T254] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.563388][ T254] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.563390][ T254] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.563392][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.563394][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.563398][ T254] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.563400][ T254] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.563403][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.563408][ T254] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.563412][ T254] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.563415][ T254] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.563417][ T254] ? 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)) [ 11.563420][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.563423][ T254] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.563427][ T254] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.563431][ T254] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.563432][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.563438][ T254] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.563441][ T254] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.563442][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.563445][ T254] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 11.563448][ T254] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.563450][ T254] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.563453][ T254] vprintk_emit (kernel/printk/printk.c:2479) [ 11.563457][ T254] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.563460][ T254] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.563462][ T254] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.563466][ T254] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.563470][ T254] _printk (kernel/printk/printk.c:2504) [ 11.563473][ T254] ? snapshot_read.cold (user.c:?) [ 11.563477][ T254] ? br_multicast_flood (??:?) bridge [ 11.563491][ T254] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.563492][ T254] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.563493][ T254] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.563498][ T254] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 11.563508][ T254] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 11.563516][ T254] new_nbp (net/bridge/br_if.c:449) bridge [ 11.563526][ T254] br_add_if (net/bridge/br_if.c:592) bridge [ 11.563533][ T254] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 11.563538][ T254] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.563541][ T254] ? __kernel_text_address (kernel/extable.c:79) [ 11.563545][ T254] do_set_master (net/core/rtnetlink.c:3071) [ 11.563549][ T254] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.563553][ T254] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.563556][ T254] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.563557][ T254] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.563559][ T254] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.563563][ T254] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.563566][ T254] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.563568][ T254] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.563570][ T254] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.563573][ T254] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.563575][ T254] ? kasan_save_track (mm/kasan/common.c:78) [ 11.563578][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.563580][ T254] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 11.563583][ T254] ? ___sys_sendmsg (net/socket.c:2757) [ 11.563587][ T254] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.563589][ T254] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.563592][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.563594][ T254] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.563596][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.563598][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.563600][ T254] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.563604][ T254] ? __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) [ 11.563606][ T254] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.563608][ T254] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.563612][ T254] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.563613][ T254] ? nla_get_range_signed (lib/nlattr.c:270) [ 11.563619][ T254] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.563624][ T254] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.563629][ T254] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.563631][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.563636][ T254] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.563638][ T254] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.563640][ T254] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.563642][ T254] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.563645][ T254] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.563647][ T254] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.563651][ T254] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.563652][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.563656][ T254] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.563658][ T254] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.563664][ T254] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.563666][ T254] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.563669][ T254] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.563675][ T254] ? 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)) [ 11.563677][ T254] ? 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)) [ 11.563681][ T254] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.563685][ T254] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.563688][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.563692][ T254] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.563696][ T254] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.563700][ T254] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.563705][ T254] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 11.563707][ T254] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.563710][ T254] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 11.563711][ T254] ? move_addr_to_kernel (net/socket.c:258) [ 11.563719][ T254] ___sys_sendmsg (net/socket.c:2767) [ 11.563722][ T254] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.563738][ T254] __sys_sendmsg (net/socket.c:2799) [ 11.563741][ T254] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.563747][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.563751][ T254] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.563754][ T254] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.563757][ T254] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.563759][ T254] RIP: 0033:0x7f0858dbb54e [ 11.563763][ T254] 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 [ 11.563765][ T254] RSP: 002b:00007fff47f65ff0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.563767][ T254] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f0858dbb54e [ 11.563769][ T254] RDX: 0000000000000000 RSI: 00007fff47f660a0 RDI: 0000000000000005 [ 11.563770][ T254] RBP: 00007fff47f66000 R08: 0000000000000000 R09: 0000000000000000 [ 11.563770][ T254] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a912f99 [ 11.563771][ T254] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff47f66760 | [ 22.771756][ T357] softirqs last disabled at (14800): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 22.771764][ T357] Preemption disabled at: | [ 22.771765][ T357] 0x0 | [ 22.771776][ T357] Tainted: [W]=WARN [ 22.771776][ T357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.771778][ T357] Call Trace: [ 22.771780][ T357] [ 22.771781][ T357] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 22.771788][ T357] __might_resched.cold (kernel/sched/core.c:9234) [ 22.771793][ T357] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 22.771797][ 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) [ 22.771802][ 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)) [ 22.771804][ T357] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 22.771810][ 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) [ 22.771812][ T357] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 22.771815][ T357] put_chars (drivers/char/virtio_console.c:1176) [ 22.771818][ T357] ? __send_to_port (drivers/char/virtio_console.c:654) [ 22.771819][ T357] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 22.771823][ T357] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 22.771827][ T357] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 22.771829][ T357] ? mark_usage (kernel/locking/lockdep.c:4690) [ 22.771831][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.771833][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.771837][ T357] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 22.771838][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.771842][ T357] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.771846][ T357] console_emit_next_record (kernel/printk/printk.c:3183) [ 22.771855][ T357] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 22.771857][ 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)) [ 22.771860][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.771864][ T357] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.771868][ T357] console_flush_one_record (kernel/printk/printk.c:3268) [ 22.771872][ T357] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 22.771874][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.771879][ T357] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 22.771881][ T357] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 22.771883][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.771885][ T357] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 22.771889][ T357] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 22.771890][ T357] ? vprintk_emit (kernel/printk/printk.c:2478) [ 22.771894][ T357] vprintk_emit (kernel/printk/printk.c:2479) [ 22.771898][ T357] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 22.771900][ T357] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 22.771902][ T357] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 22.771905][ T357] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 22.771908][ T357] _printk (kernel/printk/printk.c:2504) [ 22.771912][ T357] ? snapshot_read.cold (user.c:?) [ 22.771920][ T357] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 22.771931][ T357] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 22.771940][ T357] br_device_event (net/bridge/br.c:111) bridge [ 22.771948][ T357] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 22.771952][ T357] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 22.771958][ T357] notifier_call_chain (kernel/notifier.c:85) [ 22.771963][ T357] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 22.771968][ T357] ? netif_change_name (net/core/dev.c:1517) [ 22.771972][ T357] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 22.771975][ T357] ? __kernel_text_address (kernel/extable.c:79) [ 22.771977][ T357] ? write_profile (profile.c:?) [ 22.771979][ T357] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 22.771984][ T357] netif_change_flags (net/core/dev.c:9882) [ 22.771988][ T357] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 22.771992][ T357] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 22.771994][ T357] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 22.771995][ T357] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 22.771997][ T357] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 22.772000][ T357] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 22.772003][ T357] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 22.772005][ T357] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 22.772008][ T357] ? kasan_save_stack (mm/kasan/common.c:58) [ 22.772011][ T357] ? kasan_save_stack (mm/kasan/common.c:57) [ 22.772012][ T357] ? kasan_save_track (mm/kasan/common.c:78) [ 22.772015][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.772017][ T357] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 22.772020][ T357] ? ___sys_sendmsg (net/socket.c:2757) [ 22.772024][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.772026][ T357] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 22.772029][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.772031][ T357] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.772033][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.772035][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.772037][ T357] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 22.772041][ 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) [ 22.772042][ T357] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 22.772044][ T357] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 22.772048][ T357] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 22.772053][ T357] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 22.772058][ T357] rtnl_newlink (net/core/rtnetlink.c:4215) [ 22.772063][ T357] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.772065][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.772069][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.772071][ T357] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 22.772073][ T357] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.772075][ T357] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 22.772078][ T357] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.772080][ T357] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 22.772084][ T357] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 22.772085][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.772089][ T357] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.772091][ T357] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 22.772094][ T357] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 22.772096][ T357] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 22.772099][ T357] ? netlink_ack (./include/linux/skbuff.h:2718) [ 22.772105][ 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)) [ 22.772107][ 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)) [ 22.772111][ T357] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 22.772114][ T357] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 22.772117][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.772121][ T357] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 22.772125][ T357] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 22.772128][ T357] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 22.772134][ T357] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 22.772136][ T357] ? copy_msghdr_from_user (net/socket.c:2650) [ 22.772138][ T357] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 22.772140][ T357] ? move_addr_to_kernel (net/socket.c:258) [ 22.772147][ T357] ___sys_sendmsg (net/socket.c:2767) [ 22.772150][ T357] ? copy_msghdr_from_user (net/socket.c:2619) [ 22.772165][ T357] __sys_sendmsg (net/socket.c:2799) [ 22.772168][ T357] ? __sys_sendmsg_sock (net/socket.c:2780) [ 22.772174][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.772178][ T357] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 22.772180][ T357] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 22.772183][ T357] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 22.772186][ T357] RIP: 0033:0x7f139aa4f54e [ 22.772188][ 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 [ 22.772190][ T357] RSP: 002b:00007ffd7beb0520 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 22.772192][ T357] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f139aa4f54e [ 22.772194][ T357] RDX: 0000000000000000 RSI: 00007ffd7beb05d0 RDI: 0000000000000005 [ 22.772195][ T357] RBP: 00007ffd7beb0530 R08: 0000000000000000 R09: 0000000000000000 [ 22.772195][ T357] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a912fa4 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