====================================== | [ 9.454949][ T187] softirqs last disabled at (23125): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.454951][ T187] Preemption disabled at: | [ 9.454951][ T187] 0x0 | [ 9.454961][ T187] Tainted: [W]=WARN [ 9.454962][ T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.454964][ T187] Call Trace: [ 9.454965][ T187] [ 9.454967][ T187] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.454973][ T187] __might_resched.cold (kernel/sched/core.c:9234) [ 9.454978][ T187] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.454982][ T187] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.454987][ T187] __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)) [ 9.454989][ T187] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.454996][ T187] ? 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) [ 9.454998][ T187] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.455002][ T187] put_chars (drivers/char/virtio_console.c:1176) [ 9.455005][ T187] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.455006][ T187] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.455011][ T187] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.455016][ T187] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.455023][ T187] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.455025][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.455027][ T187] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.455031][ T187] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.455035][ T187] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.455037][ T187] ? 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)) [ 9.455040][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.455042][ T187] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.455052][ T187] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.455056][ T187] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.455058][ T187] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.455063][ T187] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.455066][ T187] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.455068][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.455070][ T187] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.455074][ T187] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.455076][ T187] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.455079][ T187] vprintk_emit (kernel/printk/printk.c:2479) [ 9.455083][ T187] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.455086][ T187] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.455090][ T187] _printk (kernel/printk/printk.c:2504) [ 9.455094][ T187] ? snapshot_read.cold (user.c:?) [ 9.455096][ T187] ? 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) [ 9.455099][ T187] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.455103][ T187] ? 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) [ 9.455105][ T187] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.455109][ T187] ? exit_notify (kernel/exit.c:780) [ 9.455111][ T187] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.455114][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.455118][ T187] do_group_exit (kernel/exit.c:1151) [ 9.455121][ T187] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.455123][ T187] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.455125][ T187] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.455128][ T187] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.455131][ T187] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.455134][ T187] RIP: 0033:0x7fc85565c1b8 [ 9.455136][ T187] Code: Unable to access opcode bytes at 0x7fc85565c18e. Code starting with the faulting instruction =========================================== [ 9.455137][ T187] RSP: 002b:00007fff161ed1c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.455140][ T187] RAX: ffffffffffffffda RBX: 00007fc85578cf88 RCX: 00007fc85565c1b8 [ 9.455141][ T187] RDX: 00007fc8553a6fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.455142][ T187] RBP: 00007fff161ed220 R08: 0000000000000000 R09: 0000000000008010 [ 9.455143][ T187] R10: 00007fff161ecfe0 R11: 0000000000000246 R12: 0000000000000001 [ 9.455144][ T187] R13: 0000000000000000 R14: 00007fc85578b680 R15: 00007fc85578cfa0 | [ 10.643073][ T233] softirqs last disabled at (13958): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 10.643076][ T233] Preemption disabled at: | [ 10.643076][ T233] vprintk_emit (kernel/printk/printk.c:2471) | [ 10.643086][ T233] Tainted: [W]=WARN [ 10.643087][ T233] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.643088][ T233] Call Trace: [ 10.643090][ T233] [ 10.643091][ T233] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.643097][ T233] ? vprintk_emit (kernel/printk/printk.c:2471) [ 10.643100][ T233] __might_resched.cold (kernel/sched/core.c:9234) [ 10.643104][ T233] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.643109][ T233] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.643114][ T233] __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)) [ 10.643116][ T233] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.643122][ T233] ? 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) [ 10.643125][ T233] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.643128][ T233] put_chars (drivers/char/virtio_console.c:1176) [ 10.643131][ T233] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.643135][ T233] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 10.643139][ T233] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.643142][ T233] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.643144][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.643145][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.643149][ T233] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.643151][ T233] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 10.643154][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.643158][ T233] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.643162][ T233] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.643166][ T233] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.643167][ T233] ? 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)) [ 10.643171][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.643173][ T233] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.643177][ T233] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.643181][ T233] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.643183][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.643188][ T233] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.643191][ T233] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.643192][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.643195][ T233] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.643198][ T233] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.643202][ T233] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.643206][ T233] vprintk_emit (kernel/printk/printk.c:2479) [ 10.643209][ T233] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.643212][ T233] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.643213][ T233] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 10.643218][ T233] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 10.643221][ T233] _printk (kernel/printk/printk.c:2504) [ 10.643225][ T233] ? snapshot_read.cold (user.c:?) [ 10.643229][ T233] ? br_multicast_flood (??:?) bridge [ 10.643241][ T233] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.643242][ T233] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.643244][ T233] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.643248][ T233] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 10.643263][ T233] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 10.643273][ T233] new_nbp (net/bridge/br_if.c:449) bridge [ 10.643282][ T233] br_add_if (net/bridge/br_if.c:592) bridge [ 10.643290][ T233] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 10.643294][ T233] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 10.643297][ T233] ? __kernel_text_address (kernel/extable.c:79) [ 10.643301][ T233] do_set_master (net/core/rtnetlink.c:3071) [ 10.643305][ T233] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.643308][ T233] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 10.643312][ T233] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 10.643313][ T233] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 10.643315][ T233] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 10.643319][ T233] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.643322][ T233] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.643324][ T233] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.643326][ T233] ? kasan_save_stack (mm/kasan/common.c:58) [ 10.643329][ T233] ? kasan_save_stack (mm/kasan/common.c:57) [ 10.643331][ T233] ? kasan_save_track (mm/kasan/common.c:78) [ 10.643334][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.643335][ T233] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 10.643338][ T233] ? ___sys_sendmsg (net/socket.c:2757) [ 10.643343][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.643345][ T233] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.643348][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.643350][ T233] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.643352][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.643354][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.643356][ T233] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 10.643360][ T233] ? __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) [ 10.643361][ T233] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 10.643364][ T233] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.643367][ T233] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 10.643369][ T233] ? nla_get_range_signed (lib/nlattr.c:270) [ 10.643373][ T233] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 10.643379][ T233] rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.643384][ T233] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.643386][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.643390][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.643392][ T233] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.643394][ T233] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.643396][ T233] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.643400][ T233] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.643402][ T233] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.643405][ T233] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.643406][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.643411][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.643412][ T233] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.643416][ T233] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 10.643418][ T233] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.643420][ T233] ? netlink_ack (./include/linux/skbuff.h:2718) [ 10.643427][ T233] ? 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)) [ 10.643428][ T233] ? 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)) [ 10.643432][ T233] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 10.643436][ T233] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 10.643439][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.643443][ T233] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 10.643446][ T233] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 10.643450][ T233] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 10.643455][ T233] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 10.643458][ T233] ? copy_msghdr_from_user (net/socket.c:2650) [ 10.643460][ T233] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 10.643462][ T233] ? move_addr_to_kernel (net/socket.c:258) [ 10.643469][ T233] ___sys_sendmsg (net/socket.c:2767) [ 10.643472][ T233] ? copy_msghdr_from_user (net/socket.c:2619) [ 10.643487][ T233] __sys_sendmsg (net/socket.c:2799) [ 10.643490][ T233] ? __sys_sendmsg_sock (net/socket.c:2780) [ 10.643497][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.643500][ T233] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.643503][ T233] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.643506][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.643508][ T233] RIP: 0033:0x7fac4c14854e [ 10.643512][ T233] 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 [ 10.643514][ T233] RSP: 002b:00007ffc335b7420 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.643516][ T233] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fac4c14854e [ 10.643518][ T233] RDX: 0000000000000000 RSI: 00007ffc335b74d0 RDI: 0000000000000005 [ 10.643519][ T233] RBP: 00007ffc335b7430 R08: 0000000000000000 R09: 0000000000000000 [ 10.643519][ T233] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90dd0c [ 10.643520][ T233] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc335b7b90 | [ 25.018642][ T615] softirqs last disabled at (22448): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 25.018650][ T615] Preemption disabled at: | [ 25.018651][ T615] 0x0 | [ 25.018660][ T615] Tainted: [W]=WARN [ 25.018661][ T615] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.018663][ T615] Call Trace: [ 25.018664][ T615] [ 25.018666][ T615] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 25.018672][ T615] __might_resched.cold (kernel/sched/core.c:9234) [ 25.018677][ T615] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 25.018681][ T615] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 25.018686][ T615] __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)) [ 25.018688][ T615] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 25.018694][ T615] ? 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) [ 25.018696][ T615] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 25.018699][ T615] put_chars (drivers/char/virtio_console.c:1176) [ 25.018702][ T615] ? __send_to_port (drivers/char/virtio_console.c:654) [ 25.018703][ T615] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 25.018707][ T615] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 25.018711][ T615] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 25.018713][ T615] ? mark_usage (kernel/locking/lockdep.c:4690) [ 25.018715][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.018717][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.018721][ T615] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 25.018722][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.018726][ T615] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 25.018730][ T615] console_emit_next_record (kernel/printk/printk.c:3183) [ 25.018734][ T615] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 25.018735][ T615] ? 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)) [ 25.018739][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.018743][ T615] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 25.018746][ T615] console_flush_one_record (kernel/printk/printk.c:3268) [ 25.018750][ T615] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 25.018752][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.018757][ T615] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 25.018760][ T615] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 25.018762][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.018764][ T615] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 25.018767][ T615] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 25.018769][ T615] ? vprintk_emit (kernel/printk/printk.c:2478) [ 25.018772][ T615] vprintk_emit (kernel/printk/printk.c:2479) [ 25.018776][ T615] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 25.018778][ T615] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 25.018780][ T615] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 25.018783][ T615] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.018787][ T615] _printk (kernel/printk/printk.c:2504) [ 25.018791][ T615] ? snapshot_read.cold (user.c:?) [ 25.018798][ T615] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 25.018809][ T615] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 25.018818][ T615] br_device_event (net/bridge/br.c:111) bridge [ 25.018826][ T615] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 25.018830][ T615] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 25.018836][ T615] notifier_call_chain (kernel/notifier.c:85) [ 25.018841][ T615] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 25.018846][ T615] ? netif_change_name (net/core/dev.c:1517) [ 25.018850][ T615] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 25.018853][ T615] ? __kernel_text_address (kernel/extable.c:79) [ 25.018855][ T615] ? write_profile (profile.c:?) [ 25.018857][ T615] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 25.018862][ T615] netif_change_flags (net/core/dev.c:9882) [ 25.018866][ T615] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 25.018869][ T615] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 25.018871][ T615] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 25.018872][ T615] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 25.018874][ T615] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 25.018878][ T615] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 25.018880][ T615] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.018882][ T615] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 25.018884][ T615] ? kasan_save_stack (mm/kasan/common.c:58) [ 25.018887][ T615] ? kasan_save_stack (mm/kasan/common.c:57) [ 25.018889][ T615] ? kasan_save_track (mm/kasan/common.c:78) [ 25.018891][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.018893][ T615] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 25.018896][ T615] ? ___sys_sendmsg (net/socket.c:2757) [ 25.018901][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.018902][ T615] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 25.018905][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.018907][ T615] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 25.018909][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.018910][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.018913][ T615] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 25.018916][ T615] ? __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) [ 25.018918][ T615] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 25.018920][ T615] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 25.018926][ T615] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 25.018932][ T615] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 25.018937][ T615] rtnl_newlink (net/core/rtnetlink.c:4215) [ 25.018942][ T615] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 25.018944][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.018948][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.018950][ T615] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 25.018952][ T615] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 25.018954][ T615] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 25.018958][ T615] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 25.018960][ T615] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 25.018963][ T615] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 25.018964][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.018968][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 25.018970][ T615] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 25.018974][ T615] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 25.018975][ T615] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 25.018978][ T615] ? netlink_ack (./include/linux/skbuff.h:2718) [ 25.018984][ T615] ? 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)) [ 25.018986][ T615] ? 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)) [ 25.018990][ T615] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 25.018993][ T615] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 25.018996][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 25.019000][ T615] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 25.019003][ T615] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 25.019007][ T615] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 25.019013][ T615] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 25.019015][ T615] ? copy_msghdr_from_user (net/socket.c:2650) [ 25.019017][ T615] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 25.019019][ T615] ? move_addr_to_kernel (net/socket.c:258) [ 25.019026][ T615] ___sys_sendmsg (net/socket.c:2767) [ 25.019029][ T615] ? copy_msghdr_from_user (net/socket.c:2619) [ 25.019044][ T615] __sys_sendmsg (net/socket.c:2799) [ 25.019047][ T615] ? __sys_sendmsg_sock (net/socket.c:2780) [ 25.019053][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 25.019057][ T615] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 25.019059][ T615] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 25.019062][ T615] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 25.019064][ T615] RIP: 0033:0x7fb852ff054e [ 25.019066][ T615] 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 [ 25.019068][ T615] RSP: 002b:00007ffe129153a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 25.019070][ T615] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb852ff054e [ 25.019072][ T615] RDX: 0000000000000000 RSI: 00007ffe12915450 RDI: 0000000000000005 [ 25.019073][ T615] RBP: 00007ffe129153b0 R08: 0000000000000000 R09: 0000000000000000 [ 25.019074][ T615] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90dd1a 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