====================================== | [ 10.126873][ T195] softirqs last disabled at (50269): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 10.126875][ T195] Preemption disabled at: | [ 10.126876][ T195] 0x0 | [ 10.126886][ T195] Tainted: [W]=WARN [ 10.126887][ T195] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.126889][ T195] Call Trace: [ 10.126891][ T195] [ 10.126892][ T195] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.126898][ T195] __might_resched.cold (kernel/sched/core.c:9234) [ 10.126903][ T195] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.126907][ T195] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.126913][ T195] __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)) [ 10.126915][ T195] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.126921][ T195] ? 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) [ 10.126923][ T195] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.126927][ T195] put_chars (drivers/char/virtio_console.c:1176) [ 10.126929][ T195] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.126931][ T195] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.126936][ T195] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.126941][ T195] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.126949][ T195] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.126952][ T195] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.126954][ T195] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.126958][ T195] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.126962][ T195] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.126964][ T195] ? 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)) [ 10.126967][ T195] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.126970][ T195] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.126974][ T195] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.126978][ T195] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.126980][ T195] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.126985][ T195] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.126988][ T195] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.126990][ T195] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.126992][ T195] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.126996][ T195] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.126998][ T195] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.127001][ T195] vprintk_emit (kernel/printk/printk.c:2479) [ 10.127005][ T195] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.127008][ T195] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.127012][ T195] _printk (kernel/printk/printk.c:2504) [ 10.127016][ T195] ? snapshot_read.cold (user.c:?) [ 10.127019][ T195] ? 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) [ 10.127021][ T195] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 10.127025][ T195] ? 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) [ 10.127028][ T195] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 10.127032][ T195] ? exit_notify (kernel/exit.c:780) [ 10.127034][ T195] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.127037][ T195] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.127041][ T195] do_group_exit (kernel/exit.c:1151) [ 10.127044][ T195] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 10.127046][ T195] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 10.127048][ T195] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.127051][ T195] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.127054][ T195] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.127057][ T195] RIP: 0033:0x7f567eb3a1b8 [ 10.127059][ T195] Code: Unable to access opcode bytes at 0x7f567eb3a18e. Code starting with the faulting instruction =========================================== [ 10.127060][ T195] RSP: 002b:00007ffc5c7fbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.127063][ T195] RAX: ffffffffffffffda RBX: 00007f567ec6af88 RCX: 00007f567eb3a1b8 [ 10.127064][ T195] RDX: 00007f567e884fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 10.127065][ T195] RBP: 00007ffc5c7fbeb0 R08: 0000000000000000 R09: 0000000000008010 [ 10.127066][ T195] R10: 00007ffc5c7fbc70 R11: 0000000000000246 R12: 0000000000000001 [ 10.127067][ T195] R13: 0000000000000000 R14: 00007f567ec69680 R15: 00007f567ec6afa0 | [ 11.572722][ T254] softirqs last disabled at (11934): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 11.572725][ T254] Preemption disabled at: | [ 11.572725][ T254] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.572735][ T254] Tainted: [W]=WARN [ 11.572736][ T254] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.572738][ T254] Call Trace: [ 11.572739][ T254] [ 11.572741][ T254] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.572747][ T254] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.572749][ T254] __might_resched.cold (kernel/sched/core.c:9234) [ 11.572754][ T254] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.572758][ 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) [ 11.572763][ 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)) [ 11.572766][ T254] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.572771][ 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) [ 11.572774][ T254] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.572777][ T254] put_chars (drivers/char/virtio_console.c:1176) [ 11.572780][ T254] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.572784][ T254] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.572788][ T254] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.572791][ T254] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.572793][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.572794][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.572798][ T254] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.572800][ T254] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.572804][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.572808][ T254] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.572812][ T254] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.572815][ T254] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.572817][ 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)) [ 11.572820][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.572823][ T254] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.572827][ T254] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.572831][ T254] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.572840][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.572845][ T254] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.572848][ T254] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.572850][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.572852][ T254] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 11.572856][ T254] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.572858][ T254] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.572861][ T254] vprintk_emit (kernel/printk/printk.c:2479) [ 11.572865][ T254] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.572867][ T254] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.572869][ T254] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.572873][ T254] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.572877][ T254] _printk (kernel/printk/printk.c:2504) [ 11.572880][ T254] ? snapshot_read.cold (user.c:?) [ 11.572884][ T254] ? br_multicast_flood (??:?) bridge [ 11.572897][ T254] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.572899][ T254] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.572900][ T254] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.572904][ T254] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 11.572915][ T254] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 11.572924][ T254] new_nbp (net/bridge/br_if.c:449) bridge [ 11.572933][ T254] br_add_if (net/bridge/br_if.c:592) bridge [ 11.572940][ T254] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 11.572949][ T254] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.572952][ T254] ? __kernel_text_address (kernel/extable.c:79) [ 11.572956][ T254] do_set_master (net/core/rtnetlink.c:3071) [ 11.572960][ T254] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.572963][ T254] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.572967][ T254] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.572968][ T254] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.572970][ T254] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.572974][ T254] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.572977][ T254] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.572978][ T254] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.572981][ T254] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.572984][ T254] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.572985][ T254] ? kasan_save_track (mm/kasan/common.c:78) [ 11.572988][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.572990][ T254] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 11.572993][ T254] ? ___sys_sendmsg (net/socket.c:2757) [ 11.572998][ T254] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.572999][ T254] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.573002][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.573004][ T254] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.573006][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.573008][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.573010][ T254] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.573014][ 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) [ 11.573016][ T254] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.573018][ T254] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.573023][ T254] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.573026][ T254] ? nla_get_range_signed (lib/nlattr.c:270) [ 11.573032][ T254] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.573037][ T254] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.573042][ T254] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.573044][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.573049][ T254] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.573050][ T254] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.573053][ T254] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.573054][ T254] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.573058][ T254] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.573060][ T254] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.573063][ T254] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.573064][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.573069][ T254] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.573071][ T254] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.573074][ T254] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.573076][ T254] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.573079][ T254] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.573085][ 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)) [ 11.573087][ 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)) [ 11.573091][ T254] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.573097][ T254] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.573101][ T254] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.573108][ T254] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.573114][ T254] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.573120][ T254] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.573129][ T254] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 11.573132][ T254] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.573136][ T254] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 11.573138][ T254] ? move_addr_to_kernel (net/socket.c:258) [ 11.573151][ T254] ___sys_sendmsg (net/socket.c:2767) [ 11.573155][ T254] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.573183][ T254] __sys_sendmsg (net/socket.c:2799) [ 11.573187][ T254] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.573198][ T254] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.573205][ T254] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.573208][ T254] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.573213][ T254] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.573217][ T254] RIP: 0033:0x7f042e61854e [ 11.573221][ 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 [ 11.573224][ T254] RSP: 002b:00007fffe66c72a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.573228][ T254] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f042e61854e [ 11.573230][ T254] RDX: 0000000000000000 RSI: 00007fffe66c7350 RDI: 0000000000000005 [ 11.573231][ T254] RBP: 00007fffe66c72b0 R08: 0000000000000000 R09: 0000000000000000 [ 11.573233][ T254] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90e7f0 [ 11.573234][ T254] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffe66c7a10 | [ 22.900744][ T359] softirqs last disabled at (15434): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 22.900757][ T359] Preemption disabled at: | [ 22.900758][ T359] 0x0 | [ 22.900770][ T359] Tainted: [W]=WARN [ 22.900771][ T359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.900773][ T359] Call Trace: [ 22.900776][ T359] [ 22.900778][ T359] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 22.900786][ T359] __might_resched.cold (kernel/sched/core.c:9234) [ 22.900792][ T359] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 22.900798][ T359] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 22.900805][ T359] __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)) [ 22.900809][ T359] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 22.900817][ T359] ? 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) [ 22.900821][ T359] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 22.900826][ T359] put_chars (drivers/char/virtio_console.c:1176) [ 22.900831][ T359] ? __send_to_port (drivers/char/virtio_console.c:654) [ 22.900833][ T359] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 22.900840][ T359] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 22.900847][ T359] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 22.900850][ T359] ? mark_usage (kernel/locking/lockdep.c:4690) [ 22.900853][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.900855][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.900863][ T359] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 22.900865][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.900877][ T359] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.900884][ T359] console_emit_next_record (kernel/printk/printk.c:3183) [ 22.900891][ T359] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 22.900893][ T359] ? 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)) [ 22.900899][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.900904][ T359] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.900911][ T359] console_flush_one_record (kernel/printk/printk.c:3268) [ 22.900918][ T359] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 22.900921][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.900930][ T359] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 22.900935][ T359] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 22.900938][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.900941][ T359] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 22.900952][ T359] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 22.900955][ T359] ? vprintk_emit (kernel/printk/printk.c:2478) [ 22.900961][ T359] vprintk_emit (kernel/printk/printk.c:2479) [ 22.900967][ T359] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 22.900970][ T359] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 22.900974][ T359] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 22.900978][ T359] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 22.900985][ T359] _printk (kernel/printk/printk.c:2504) [ 22.900990][ T359] ? snapshot_read.cold (user.c:?) [ 22.901004][ T359] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 22.901023][ T359] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 22.901039][ T359] br_device_event (net/bridge/br.c:111) bridge [ 22.901051][ T359] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 22.901057][ T359] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 22.901068][ T359] notifier_call_chain (kernel/notifier.c:85) [ 22.901078][ T359] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 22.901085][ T359] ? netif_change_name (net/core/dev.c:1517) [ 22.901092][ T359] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 22.901096][ T359] ? __kernel_text_address (kernel/extable.c:79) [ 22.901099][ T359] ? write_profile (profile.c:?) [ 22.901102][ T359] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 22.901110][ T359] netif_change_flags (net/core/dev.c:9882) [ 22.901117][ T359] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 22.901123][ T359] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 22.901126][ T359] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 22.901128][ T359] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 22.901131][ T359] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 22.901136][ T359] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 22.901140][ T359] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 22.901143][ T359] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 22.901147][ T359] ? kasan_save_stack (mm/kasan/common.c:58) [ 22.901151][ T359] ? kasan_save_stack (mm/kasan/common.c:57) [ 22.901153][ T359] ? kasan_save_track (mm/kasan/common.c:78) [ 22.901158][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.901161][ T359] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 22.901165][ T359] ? ___sys_sendmsg (net/socket.c:2757) [ 22.901172][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.901175][ T359] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 22.901179][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.901183][ T359] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.901185][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.901188][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.901192][ T359] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 22.901197][ T359] ? __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) [ 22.901199][ T359] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 22.901203][ T359] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 22.901209][ T359] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 22.901219][ T359] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 22.901229][ T359] rtnl_newlink (net/core/rtnetlink.c:4215) [ 22.901239][ T359] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.901243][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.901251][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.901254][ T359] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 22.901257][ T359] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.901260][ T359] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 22.901267][ T359] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.901270][ T359] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 22.901276][ T359] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 22.901278][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.901286][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.901289][ T359] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 22.901295][ T359] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 22.901298][ T359] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 22.901303][ T359] ? netlink_ack (./include/linux/skbuff.h:2718) [ 22.901315][ T359] ? 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)) [ 22.901318][ T359] ? 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)) [ 22.901326][ T359] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 22.901332][ T359] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 22.901337][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.901345][ T359] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 22.901351][ T359] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 22.901358][ T359] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 22.901367][ T359] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 22.901371][ T359] ? copy_msghdr_from_user (net/socket.c:2650) [ 22.901375][ T359] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 22.901377][ T359] ? move_addr_to_kernel (net/socket.c:258) [ 22.901391][ T359] ___sys_sendmsg (net/socket.c:2767) [ 22.901396][ T359] ? copy_msghdr_from_user (net/socket.c:2619) [ 22.901427][ T359] __sys_sendmsg (net/socket.c:2799) [ 22.901432][ T359] ? __sys_sendmsg_sock (net/socket.c:2780) [ 22.901443][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.901450][ T359] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 22.901453][ T359] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 22.901458][ T359] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 22.901461][ T359] RIP: 0033:0x7fe47ab2654e [ 22.901465][ T359] 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 [ 22.901467][ T359] RSP: 002b:00007ffd9b1079f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 22.901471][ T359] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe47ab2654e [ 22.901473][ T359] RDX: 0000000000000000 RSI: 00007ffd9b107aa0 RDI: 0000000000000005 [ 22.901475][ T359] RBP: 00007ffd9b107a00 R08: 0000000000000000 R09: 0000000000000000 [ 22.901476][ T359] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90e7fc Finger prints: br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print __alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars __irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print