====================================== | [ 9.095337][ T186] softirqs last disabled at (32517): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.095340][ T186] Preemption disabled at: | [ 9.095340][ T186] 0x0 | [ 9.095350][ T186] Tainted: [W]=WARN [ 9.095351][ T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.095353][ T186] Call Trace: [ 9.095354][ T186] [ 9.095356][ T186] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.095362][ T186] __might_resched.cold (kernel/sched/core.c:9234) [ 9.095367][ T186] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.095371][ 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) [ 9.095376][ 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)) [ 9.095379][ T186] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.095385][ 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) [ 9.095387][ T186] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.095391][ T186] put_chars (drivers/char/virtio_console.c:1176) [ 9.095393][ T186] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.095395][ T186] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.095399][ T186] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.095404][ T186] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.095411][ T186] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.095413][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.095415][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.095419][ T186] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.095423][ T186] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.095425][ 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)) [ 9.095428][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.095430][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.095434][ T186] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.095438][ T186] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.095440][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.095445][ T186] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.095448][ T186] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.095450][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.095452][ T186] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.095456][ T186] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.095457][ T186] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.095461][ T186] vprintk_emit (kernel/printk/printk.c:2479) [ 9.095465][ T186] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.095468][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.095472][ T186] _printk (kernel/printk/printk.c:2504) [ 9.095477][ T186] ? snapshot_read.cold (user.c:?) [ 9.095481][ 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) [ 9.095484][ T186] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.095488][ 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) [ 9.095491][ T186] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.095495][ T186] ? exit_notify (kernel/exit.c:780) [ 9.095497][ T186] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.095499][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.095504][ T186] do_group_exit (kernel/exit.c:1151) [ 9.095506][ T186] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.095508][ T186] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.095511][ T186] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.095514][ T186] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.095517][ T186] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.095519][ T186] RIP: 0033:0x7f0d27bc61b8 [ 9.095522][ T186] Code: Unable to access opcode bytes at 0x7f0d27bc618e. Code starting with the faulting instruction =========================================== [ 9.095523][ T186] RSP: 002b:00007fff6b7ffe78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.095525][ T186] RAX: ffffffffffffffda RBX: 00007f0d27cf6f88 RCX: 00007f0d27bc61b8 [ 9.095527][ T186] RDX: 00007f0d27910fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.095528][ T186] RBP: 00007fff6b7ffed0 R08: 0000000000000000 R09: 0000000000008010 [ 9.095528][ T186] R10: 00007fff6b7ffc90 R11: 0000000000000246 R12: 0000000000000001 [ 9.095529][ T186] R13: 0000000000000000 R14: 00007f0d27cf5680 R15: 00007f0d27cf6fa0 | [ 10.275067][ T233] softirqs last disabled at (18024): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 10.275069][ T233] Preemption disabled at: | [ 10.275070][ T233] vprintk_emit (kernel/printk/printk.c:2471) | [ 10.275079][ T233] Tainted: [W]=WARN [ 10.275079][ T233] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.275081][ T233] Call Trace: [ 10.275083][ T233] [ 10.275084][ T233] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.275090][ T233] ? vprintk_emit (kernel/printk/printk.c:2471) [ 10.275092][ T233] __might_resched.cold (kernel/sched/core.c:9234) [ 10.275097][ T233] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.275101][ 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) [ 10.275106][ 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)) [ 10.275108][ T233] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.275113][ 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) [ 10.275116][ T233] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.275119][ T233] put_chars (drivers/char/virtio_console.c:1176) [ 10.275122][ T233] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.275126][ T233] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 10.275130][ T233] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.275133][ T233] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.275135][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.275136][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.275140][ T233] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.275142][ T233] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 10.275145][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.275149][ T233] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.275153][ T233] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.275157][ T233] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.275159][ 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)) [ 10.275162][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.275164][ T233] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.275168][ T233] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.275172][ T233] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.275174][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.275179][ T233] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.275182][ T233] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.275184][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.275186][ T233] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.275190][ T233] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.275191][ T233] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.275195][ T233] vprintk_emit (kernel/printk/printk.c:2479) [ 10.275199][ T233] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.275201][ T233] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.275203][ T233] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 10.275207][ T233] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 10.275211][ T233] _printk (kernel/printk/printk.c:2504) [ 10.275214][ T233] ? snapshot_read.cold (user.c:?) [ 10.275218][ T233] ? br_multicast_flood (??:?) bridge [ 10.275232][ T233] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.275234][ T233] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.275235][ T233] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.275240][ T233] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 10.275249][ T233] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 10.275257][ T233] new_nbp (net/bridge/br_if.c:449) bridge [ 10.275266][ T233] br_add_if (net/bridge/br_if.c:592) bridge [ 10.275273][ T233] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 10.275277][ T233] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 10.275280][ T233] ? __kernel_text_address (kernel/extable.c:79) [ 10.275284][ T233] do_set_master (net/core/rtnetlink.c:3071) [ 10.275288][ T233] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.275291][ T233] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 10.275295][ T233] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 10.275296][ T233] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 10.275299][ T233] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 10.275302][ T233] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.275305][ T233] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.275307][ T233] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.275309][ T233] ? kasan_save_stack (mm/kasan/common.c:58) [ 10.275312][ T233] ? kasan_save_stack (mm/kasan/common.c:57) [ 10.275314][ T233] ? kasan_save_track (mm/kasan/common.c:78) [ 10.275317][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.275318][ T233] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 10.275321][ T233] ? ___sys_sendmsg (net/socket.c:2757) [ 10.275326][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.275328][ T233] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.275330][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.275332][ T233] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.275334][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.275336][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.275338][ T233] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 10.275342][ 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) [ 10.275343][ T233] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 10.275345][ T233] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.275349][ T233] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 10.275350][ T233] ? nla_get_range_signed (lib/nlattr.c:270) [ 10.275355][ T233] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 10.275360][ T233] rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.275365][ T233] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.275367][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.275372][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.275373][ T233] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.275376][ T233] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.275377][ T233] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.275381][ T233] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.275383][ T233] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.275386][ T233] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.275387][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.275391][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.275393][ T233] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.275397][ T233] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 10.275398][ T233] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.275401][ T233] ? netlink_ack (./include/linux/skbuff.h:2718) [ 10.275407][ 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)) [ 10.275409][ 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)) [ 10.275413][ T233] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 10.275416][ T233] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 10.275419][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.275423][ T233] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 10.275427][ T233] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 10.275430][ T233] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 10.275436][ T233] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 10.275438][ T233] ? copy_msghdr_from_user (net/socket.c:2650) [ 10.275440][ T233] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 10.275442][ T233] ? move_addr_to_kernel (net/socket.c:258) [ 10.275449][ T233] ___sys_sendmsg (net/socket.c:2767) [ 10.275452][ T233] ? copy_msghdr_from_user (net/socket.c:2619) [ 10.275467][ T233] __sys_sendmsg (net/socket.c:2799) [ 10.275470][ T233] ? __sys_sendmsg_sock (net/socket.c:2780) [ 10.275476][ T233] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.275479][ T233] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.275482][ T233] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.275485][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.275487][ T233] RIP: 0033:0x7f4b6e3a754e [ 10.275490][ 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 [ 10.275492][ T233] RSP: 002b:00007ffe87cc21f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.275495][ T233] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f4b6e3a754e [ 10.275496][ T233] RDX: 0000000000000000 RSI: 00007ffe87cc22a0 RDI: 0000000000000005 [ 10.275497][ T233] RBP: 00007ffe87cc2200 R08: 0000000000000000 R09: 0000000000000000 [ 10.275498][ T233] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91636e [ 10.275499][ T233] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe87cc2960 | [ 24.924101][ T615] softirqs last disabled at (20330): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 24.924109][ T615] Preemption disabled at: | [ 24.924110][ T615] 0x0 | [ 24.924119][ T615] Tainted: [W]=WARN [ 24.924120][ T615] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.924122][ T615] Call Trace: [ 24.924124][ T615] [ 24.924125][ T615] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 24.924132][ T615] __might_resched.cold (kernel/sched/core.c:9234) [ 24.924136][ T615] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 24.924140][ 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) [ 24.924145][ 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)) [ 24.924148][ T615] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 24.924153][ 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) [ 24.924156][ T615] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 24.924159][ T615] put_chars (drivers/char/virtio_console.c:1176) [ 24.924162][ T615] ? __send_to_port (drivers/char/virtio_console.c:654) [ 24.924163][ T615] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 24.924167][ T615] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 24.924171][ T615] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 24.924173][ T615] ? mark_usage (kernel/locking/lockdep.c:4690) [ 24.924175][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 24.924177][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 24.924181][ T615] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 24.924182][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 24.924186][ T615] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 24.924190][ T615] console_emit_next_record (kernel/printk/printk.c:3183) [ 24.924194][ T615] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 24.924196][ 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)) [ 24.924199][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 24.924203][ T615] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 24.924207][ T615] console_flush_one_record (kernel/printk/printk.c:3268) [ 24.924211][ T615] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 24.924213][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 24.924218][ T615] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 24.924220][ T615] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 24.924224][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 24.924227][ T615] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 24.924230][ T615] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 24.924232][ T615] ? vprintk_emit (kernel/printk/printk.c:2478) [ 24.924235][ T615] vprintk_emit (kernel/printk/printk.c:2479) [ 24.924239][ T615] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 24.924241][ T615] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 24.924243][ T615] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 24.924246][ T615] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 24.924250][ T615] _printk (kernel/printk/printk.c:2504) [ 24.924254][ T615] ? snapshot_read.cold (user.c:?) [ 24.924262][ T615] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 24.924272][ T615] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 24.924282][ T615] br_device_event (net/bridge/br.c:111) bridge [ 24.924289][ T615] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 24.924293][ T615] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 24.924299][ T615] notifier_call_chain (kernel/notifier.c:85) [ 24.924305][ T615] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 24.924310][ T615] ? netif_change_name (net/core/dev.c:1517) [ 24.924314][ T615] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 24.924317][ T615] ? __kernel_text_address (kernel/extable.c:79) [ 24.924319][ T615] ? write_profile (profile.c:?) [ 24.924321][ T615] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 24.924326][ T615] netif_change_flags (net/core/dev.c:9882) [ 24.924330][ T615] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 24.924334][ T615] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 24.924336][ T615] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 24.924337][ T615] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 24.924339][ T615] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 24.924343][ T615] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 24.924346][ T615] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 24.924347][ T615] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 24.924350][ T615] ? kasan_save_stack (mm/kasan/common.c:58) [ 24.924353][ T615] ? kasan_save_stack (mm/kasan/common.c:57) [ 24.924355][ T615] ? kasan_save_track (mm/kasan/common.c:78) [ 24.924358][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 24.924359][ T615] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 24.924362][ T615] ? ___sys_sendmsg (net/socket.c:2757) [ 24.924367][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 24.924369][ T615] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 24.924372][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 24.924374][ T615] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 24.924375][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 24.924377][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 24.924380][ T615] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 24.924383][ 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) [ 24.924385][ T615] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 24.924387][ T615] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 24.924390][ T615] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 24.924396][ T615] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 24.924401][ T615] rtnl_newlink (net/core/rtnetlink.c:4215) [ 24.924406][ T615] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 24.924408][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 24.924412][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 24.924414][ T615] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 24.924416][ T615] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 24.924418][ T615] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 24.924422][ T615] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 24.924424][ T615] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 24.924427][ T615] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 24.924428][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 24.924432][ T615] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 24.924434][ T615] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 24.924438][ T615] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 24.924439][ T615] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 24.924442][ T615] ? netlink_ack (./include/linux/skbuff.h:2718) [ 24.924448][ 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)) [ 24.924450][ 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)) [ 24.924454][ T615] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 24.924458][ T615] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 24.924460][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 24.924464][ T615] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 24.924468][ T615] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 24.924472][ T615] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 24.924477][ T615] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 24.924480][ T615] ? copy_msghdr_from_user (net/socket.c:2650) [ 24.924482][ T615] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 24.924484][ T615] ? move_addr_to_kernel (net/socket.c:258) [ 24.924491][ T615] ___sys_sendmsg (net/socket.c:2767) [ 24.924494][ T615] ? copy_msghdr_from_user (net/socket.c:2619) [ 24.924509][ T615] __sys_sendmsg (net/socket.c:2799) [ 24.924512][ T615] ? __sys_sendmsg_sock (net/socket.c:2780) [ 24.924518][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 24.924522][ T615] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 24.924524][ T615] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 24.924527][ T615] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 24.924529][ T615] RIP: 0033:0x7fa7aeffe54e [ 24.924532][ 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 [ 24.924533][ T615] RSP: 002b:00007ffd6a646b20 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 24.924536][ T615] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa7aeffe54e [ 24.924537][ T615] RDX: 0000000000000000 RSI: 00007ffd6a646bd0 RDI: 0000000000000005 [ 24.924538][ T615] RBP: 00007ffd6a646b30 R08: 0000000000000000 R09: 0000000000000000 [ 24.924539][ T615] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91637d 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