====================================== | [ 9.497741][ T186] softirqs last disabled at (58266): netlink_release (./include/net/sock.h:2138 net/netlink/af_netlink.c:727) | [ 9.497744][ T186] Preemption disabled at: | [ 9.497744][ T186] 0x0 | [ 9.497754][ T186] Tainted: [W]=WARN [ 9.497755][ T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.497756][ T186] Call Trace: [ 9.497758][ T186] [ 9.497760][ T186] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.497766][ T186] __might_resched.cold (kernel/sched/core.c:9234) [ 9.497771][ T186] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.497775][ T186] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.497780][ T186] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 9.497782][ T186] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.497788][ T186] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 9.497791][ T186] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.497794][ T186] put_chars (drivers/char/virtio_console.c:1176) [ 9.497796][ T186] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.497798][ T186] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.497803][ T186] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.497808][ T186] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.497814][ T186] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.497816][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.497819][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.497822][ T186] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.497826][ T186] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.497828][ T186] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 9.497831][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.497834][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.497837][ T186] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.497841][ T186] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.497843][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.497848][ T186] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.497851][ T186] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.497853][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.497855][ T186] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.497859][ T186] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.497860][ T186] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.497864][ T186] vprintk_emit (kernel/printk/printk.c:2479) [ 9.497867][ T186] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.497871][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.497874][ T186] _printk (kernel/printk/printk.c:2504) [ 9.497878][ T186] ? snapshot_read.cold (user.c:?) [ 9.497881][ T186] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 9.497883][ T186] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.497887][ T186] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 9.497890][ T186] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.497893][ T186] ? exit_notify (kernel/exit.c:780) [ 9.497895][ T186] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.497898][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.497902][ T186] do_group_exit (kernel/exit.c:1151) [ 9.497905][ T186] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.497907][ T186] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.497909][ T186] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.497912][ T186] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.497915][ T186] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.497917][ T186] RIP: 0033:0x7fd55012a1b8 [ 9.497919][ T186] Code: Unable to access opcode bytes at 0x7fd55012a18e. Code starting with the faulting instruction =========================================== [ 9.497921][ T186] RSP: 002b:00007ffcfe994c28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.497923][ T186] RAX: ffffffffffffffda RBX: 00007fd55025af88 RCX: 00007fd55012a1b8 [ 9.497924][ T186] RDX: 00007fd54fe74fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.497925][ T186] RBP: 00007ffcfe994c80 R08: 0000000000000000 R09: 0000000000008010 [ 9.497926][ T186] R10: 00007ffcfe994a40 R11: 0000000000000246 R12: 0000000000000001 [ 9.497927][ T186] R13: 0000000000000000 R14: 00007fd550259680 R15: 00007fd55025afa0 | [ 10.935710][ T253] softirqs last disabled at (17972): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 10.935713][ T253] Preemption disabled at: | [ 10.935713][ T253] vprintk_emit (kernel/printk/printk.c:2471) | [ 10.935723][ T253] Tainted: [W]=WARN [ 10.935724][ T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.935726][ T253] Call Trace: [ 10.935727][ T253] [ 10.935729][ T253] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.935735][ T253] ? vprintk_emit (kernel/printk/printk.c:2471) [ 10.935737][ T253] __might_resched.cold (kernel/sched/core.c:9234) [ 10.935742][ T253] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.935746][ T253] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.935751][ T253] __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)) [ 10.935754][ T253] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.935759][ T253] ? 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) [ 10.935762][ T253] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.935765][ T253] put_chars (drivers/char/virtio_console.c:1176) [ 10.935768][ T253] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.935773][ T253] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 10.935776][ T253] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.935779][ T253] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.935781][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.935783][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.935787][ T253] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.935789][ T253] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 10.935792][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.935797][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.935801][ T253] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.935805][ T253] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.935807][ T253] ? 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)) [ 10.935810][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.935812][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.935816][ T253] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.935821][ T253] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.935822][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.935828][ T253] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.935830][ T253] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.935832][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.935835][ T253] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.935838][ T253] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.935840][ T253] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.935843][ T253] vprintk_emit (kernel/printk/printk.c:2479) [ 10.935847][ T253] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.935849][ T253] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.935851][ T253] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 10.935855][ T253] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 10.935859][ T253] _printk (kernel/printk/printk.c:2504) [ 10.935862][ T253] ? snapshot_read.cold (user.c:?) [ 10.935866][ T253] ? br_multicast_flood (??:?) bridge [ 10.935879][ T253] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.935880][ T253] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.935881][ T253] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.935886][ T253] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 10.935896][ T253] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 10.935904][ T253] new_nbp (net/bridge/br_if.c:449) bridge [ 10.935913][ T253] br_add_if (net/bridge/br_if.c:592) bridge [ 10.935920][ T253] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 10.935925][ T253] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 10.935928][ T253] ? __kernel_text_address (kernel/extable.c:79) [ 10.935933][ T253] do_set_master (net/core/rtnetlink.c:3071) [ 10.935938][ T253] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.935942][ T253] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 10.935946][ T253] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 10.935947][ T253] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 10.935950][ T253] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 10.935954][ T253] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.935957][ T253] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.935960][ T253] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.935964][ T253] ? kasan_save_stack (mm/kasan/common.c:58) [ 10.935968][ T253] ? kasan_save_stack (mm/kasan/common.c:57) [ 10.935971][ T253] ? kasan_save_track (mm/kasan/common.c:78) [ 10.935975][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.935977][ T253] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 10.935979][ T253] ? ___sys_sendmsg (net/socket.c:2757) [ 10.935984][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.935986][ T253] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.935989][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.935992][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.935993][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.935995][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.935997][ T253] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 10.936001][ T253] ? __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) [ 10.936003][ T253] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 10.936005][ T253] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.936009][ T253] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 10.936010][ T253] ? nla_get_range_signed (lib/nlattr.c:270) [ 10.936015][ T253] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 10.936021][ T253] rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.936026][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.936028][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.936032][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.936034][ T253] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.936036][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.936038][ T253] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.936042][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.936044][ T253] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.936047][ T253] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.936048][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.936053][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.936055][ T253] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.936058][ T253] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 10.936060][ T253] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.936063][ T253] ? netlink_ack (./include/linux/skbuff.h:2718) [ 10.936069][ T253] ? 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)) [ 10.936071][ T253] ? 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)) [ 10.936075][ T253] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 10.936079][ T253] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 10.936081][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.936086][ T253] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 10.936089][ T253] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 10.936093][ T253] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 10.936099][ T253] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 10.936101][ T253] ? copy_msghdr_from_user (net/socket.c:2650) [ 10.936103][ T253] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 10.936105][ T253] ? move_addr_to_kernel (net/socket.c:258) [ 10.936113][ T253] ___sys_sendmsg (net/socket.c:2767) [ 10.936115][ T253] ? copy_msghdr_from_user (net/socket.c:2619) [ 10.936132][ T253] __sys_sendmsg (net/socket.c:2799) [ 10.936134][ T253] ? __sys_sendmsg_sock (net/socket.c:2780) [ 10.936141][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.936144][ T253] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.936147][ T253] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.936150][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.936152][ T253] RIP: 0033:0x7f989993d54e [ 10.936156][ T253] 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 [ 10.936158][ T253] RSP: 002b:00007fff5f668e20 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.936160][ T253] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f989993d54e [ 10.936162][ T253] RDX: 0000000000000000 RSI: 00007fff5f668ed0 RDI: 0000000000000005 [ 10.936163][ T253] RBP: 00007fff5f668e30 R08: 0000000000000000 R09: 0000000000000000 [ 10.936164][ T253] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90e732 [ 10.936165][ T253] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff5f669590 | [ 25.492411][ T396] softirqs last disabled at (12850): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 25.492419][ T396] Preemption disabled at: | [ 25.492420][ T396] 0x0 | [ 25.492430][ T396] Tainted: [W]=WARN [ 25.492431][ T396] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.492433][ T396] Call Trace: [ 25.492435][ T396] [ 25.492436][ T396] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 25.492443][ T396] __might_resched.cold (kernel/sched/core.c:9234) [ 25.492447][ T396] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 25.492452][ T396] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 25.492457][ T396] __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)) [ 25.492459][ T396] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 25.492465][ T396] ? 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) [ 25.492468][ T396] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 25.492471][ T396] put_chars (drivers/char/virtio_console.c:1176) [ 25.492474][ T396] ? __send_to_port (drivers/char/virtio_console.c:654) [ 25.492476][ T396] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 25.492480][ T396] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 25.492489][ T396] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 25.492492][ T396] ? mark_usage (kernel/locking/lockdep.c:4690) [ 25.492494][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.492495][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.492500][ T396] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 25.492501][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.492505][ T396] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 25.492509][ T396] console_emit_next_record (kernel/printk/printk.c:3183) [ 25.492513][ T396] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 25.492515][ T396] ? 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)) [ 25.492518][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.492522][ T396] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 25.492529][ T396] console_flush_one_record (kernel/printk/printk.c:3268) [ 25.492536][ T396] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 25.492539][ T396] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 25.492545][ T396] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 25.492548][ T396] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 25.492553][ T396] ? console_unlock (kernel/printk/printk.c:3415) [ 25.492557][ T396] vprintk_emit (kernel/printk/printk.c:2479) [ 25.492561][ T396] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 25.492563][ T396] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 25.492565][ T396] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 25.492568][ T396] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.492572][ T396] _printk (kernel/printk/printk.c:2504) [ 25.492576][ T396] ? snapshot_read.cold (user.c:?) [ 25.492584][ T396] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 25.492596][ T396] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 25.492605][ T396] br_device_event (net/bridge/br.c:111) bridge [ 25.492613][ T396] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 25.492617][ T396] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 25.492623][ T396] notifier_call_chain (kernel/notifier.c:85) [ 25.492629][ T396] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 25.492634][ T396] ? netif_change_name (net/core/dev.c:1517) [ 25.492638][ T396] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 25.492641][ T396] ? __kernel_text_address (kernel/extable.c:79) [ 25.492643][ T396] ? write_profile (profile.c:?) [ 25.492646][ T396] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 25.492651][ T396] netif_change_flags (net/core/dev.c:9882) [ 25.492655][ T396] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 25.492658][ T396] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 25.492660][ T396] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 25.492662][ T396] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 25.492664][ T396] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 25.492667][ T396] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 25.492670][ T396] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.492672][ T396] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 25.492675][ T396] ? kasan_save_stack (mm/kasan/common.c:58) [ 25.492678][ T396] ? kasan_save_stack (mm/kasan/common.c:57) [ 25.492680][ T396] ? kasan_save_track (mm/kasan/common.c:78) [ 25.492682][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.492684][ T396] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 25.492687][ T396] ? ___sys_sendmsg (net/socket.c:2757) [ 25.492692][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.492694][ T396] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 25.492697][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.492699][ T396] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 25.492701][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.492703][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.492705][ T396] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 25.492709][ T396] ? __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) [ 25.492711][ T396] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 25.492713][ T396] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 25.492717][ T396] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 25.492722][ T396] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 25.492727][ T396] rtnl_newlink (net/core/rtnetlink.c:4215) [ 25.492733][ T396] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 25.492735][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.492739][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.492741][ T396] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 25.492743][ T396] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 25.492745][ T396] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 25.492749][ T396] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 25.492751][ T396] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 25.492754][ T396] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 25.492756][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.492760][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.492762][ T396] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 25.492766][ T396] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 25.492768][ T396] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 25.492771][ T396] ? netlink_ack (./include/linux/skbuff.h:2718) [ 25.492777][ T396] ? 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)) [ 25.492778][ T396] ? 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)) [ 25.492783][ T396] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 25.492787][ T396] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 25.492789][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.492794][ T396] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 25.492797][ T396] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 25.492801][ T396] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 25.492808][ T396] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 25.492810][ T396] ? copy_msghdr_from_user (net/socket.c:2650) [ 25.492812][ T396] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 25.492814][ T396] ? move_addr_to_kernel (net/socket.c:258) [ 25.492822][ T396] ___sys_sendmsg (net/socket.c:2767) [ 25.492825][ T396] ? copy_msghdr_from_user (net/socket.c:2619) [ 25.492841][ T396] __sys_sendmsg (net/socket.c:2799) [ 25.492844][ T396] ? __sys_sendmsg_sock (net/socket.c:2780) [ 25.492850][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.492854][ T396] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 25.492856][ T396] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 25.492859][ T396] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 25.492864][ T396] RIP: 0033:0x7f0a70b3054e [ 25.492866][ T396] 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 [ 25.492868][ T396] RSP: 002b:00007ffd7aaca1c0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 25.492871][ T396] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f0a70b3054e [ 25.492872][ T396] RDX: 0000000000000000 RSI: 00007ffd7aaca270 RDI: 0000000000000005 [ 25.492873][ T396] RBP: 00007ffd7aaca1d0 R08: 0000000000000000 R09: 0000000000000000 [ 25.492874][ T396] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90e740 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 netlink_release:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print