====================================== | [ 9.233222][ T187] softirqs last disabled at (40973): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.233224][ T187] Preemption disabled at: | [ 9.233225][ T187] 0x0 | [ 9.233235][ T187] Tainted: [W]=WARN [ 9.233235][ T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.233237][ T187] Call Trace: [ 9.233238][ T187] [ 9.233240][ T187] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.233246][ T187] __might_resched.cold (kernel/sched/core.c:9234) [ 9.233251][ T187] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.233255][ 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) [ 9.233260][ 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)) [ 9.233263][ T187] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.233268][ 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) [ 9.233271][ T187] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.233274][ T187] put_chars (drivers/char/virtio_console.c:1176) [ 9.233277][ T187] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.233278][ T187] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.233283][ T187] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.233288][ T187] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.233295][ T187] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.233297][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.233299][ T187] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.233303][ T187] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.233307][ T187] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.233309][ 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)) [ 9.233312][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.233314][ T187] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.233318][ T187] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.233323][ T187] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.233324][ T187] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.233330][ T187] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.233332][ T187] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.233334][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.233336][ T187] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.233340][ T187] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.233342][ T187] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.233345][ T187] vprintk_emit (kernel/printk/printk.c:2479) [ 9.233349][ T187] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.233352][ T187] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.233356][ T187] _printk (kernel/printk/printk.c:2504) [ 9.233360][ T187] ? snapshot_read.cold (user.c:?) [ 9.233363][ 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) [ 9.233365][ T187] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.233369][ 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) [ 9.233372][ T187] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.233375][ T187] ? exit_notify (kernel/exit.c:780) [ 9.233377][ T187] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.233380][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.233384][ T187] do_group_exit (kernel/exit.c:1151) [ 9.233387][ T187] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.233389][ T187] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.233391][ T187] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.233394][ T187] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.233397][ T187] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.233400][ T187] RIP: 0033:0x7f03658121b8 [ 9.233402][ T187] Code: Unable to access opcode bytes at 0x7f036581218e. Code starting with the faulting instruction =========================================== [ 9.233403][ T187] RSP: 002b:00007fff444e9568 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.233405][ T187] RAX: ffffffffffffffda RBX: 00007f0365942f88 RCX: 00007f03658121b8 [ 9.233407][ T187] RDX: 00007f036555cfc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.233408][ T187] RBP: 00007fff444e95c0 R08: 0000000000000000 R09: 0000000000008010 [ 9.233408][ T187] R10: 00007fff444e9380 R11: 0000000000000246 R12: 0000000000000001 [ 9.233409][ T187] R13: 0000000000000000 R14: 00007f0365941680 R15: 00007f0365942fa0 | [ 10.736259][ T244] softirqs last disabled at (23318): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 10.736262][ T244] Preemption disabled at: | [ 10.736262][ T244] vprintk_emit (kernel/printk/printk.c:2471) | [ 10.736271][ T244] Tainted: [W]=WARN [ 10.736272][ T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.736274][ T244] Call Trace: [ 10.736275][ T244] [ 10.736277][ T244] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.736282][ T244] ? vprintk_emit (kernel/printk/printk.c:2471) [ 10.736284][ T244] __might_resched.cold (kernel/sched/core.c:9234) [ 10.736289][ T244] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.736293][ T244] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.736298][ T244] __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)) [ 10.736300][ T244] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.736306][ T244] ? 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) [ 10.736308][ T244] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.736311][ T244] put_chars (drivers/char/virtio_console.c:1176) [ 10.736314][ T244] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.736319][ T244] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 10.736322][ T244] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.736325][ T244] ? mark_usage (kernel/locking/lockdep.c:4690) [ 10.736327][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.736328][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.736332][ T244] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.736334][ T244] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 10.736337][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.736341][ T244] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.736345][ T244] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.736349][ T244] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.736350][ T244] ? 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)) [ 10.736353][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.736356][ T244] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.736360][ T244] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.736364][ T244] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.736366][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.736371][ T244] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.736373][ T244] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.736375][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.736378][ T244] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.736381][ T244] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.736383][ T244] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.736386][ T244] vprintk_emit (kernel/printk/printk.c:2479) [ 10.736390][ T244] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.736393][ T244] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.736394][ T244] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 10.736398][ T244] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 10.736402][ T244] _printk (kernel/printk/printk.c:2504) [ 10.736405][ T244] ? snapshot_read.cold (user.c:?) [ 10.736409][ T244] ? br_multicast_flood (??:?) bridge [ 10.736421][ T244] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.736422][ T244] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.736423][ T244] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.736427][ T244] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 10.736438][ T244] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 10.736446][ T244] new_nbp (net/bridge/br_if.c:449) bridge [ 10.736455][ T244] br_add_if (net/bridge/br_if.c:592) bridge [ 10.736461][ T244] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 10.736465][ T244] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 10.736468][ T244] ? __kernel_text_address (kernel/extable.c:79) [ 10.736472][ T244] do_set_master (net/core/rtnetlink.c:3071) [ 10.736477][ T244] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.736480][ T244] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 10.736483][ T244] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 10.736484][ T244] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 10.736486][ T244] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 10.736490][ T244] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.736492][ T244] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.736494][ T244] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.736497][ T244] ? kasan_save_stack (mm/kasan/common.c:58) [ 10.736500][ T244] ? kasan_save_stack (mm/kasan/common.c:57) [ 10.736501][ T244] ? kasan_save_track (mm/kasan/common.c:78) [ 10.736504][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.736506][ T244] ? netlink_seq_next (net/netlink/af_netlink.c:2684) [ 10.736509][ T244] ? ___sys_sendmsg (net/socket.c:2757) [ 10.736513][ T244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.736515][ T244] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.736518][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.736520][ T244] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.736521][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.736523][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.736525][ T244] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 10.736529][ T244] ? __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) [ 10.736531][ T244] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 10.736533][ T244] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.736536][ T244] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 10.736538][ T244] ? nla_get_range_signed (lib/nlattr.c:270) [ 10.736543][ T244] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 10.736548][ T244] rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.736553][ T244] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.736555][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.736559][ T244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.736561][ T244] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.736563][ T244] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.736564][ T244] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.736568][ T244] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.736570][ T244] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.736573][ T244] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.736574][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.736578][ T244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.736580][ T244] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.736584][ T244] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 10.736586][ T244] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.736588][ T244] ? netlink_ack (./include/linux/skbuff.h:2718) [ 10.736594][ T244] ? 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)) [ 10.736596][ T244] ? 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)) [ 10.736600][ T244] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 10.736603][ T244] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 10.736606][ T244] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.736610][ T244] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 10.736613][ T244] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 10.736617][ T244] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 10.736622][ T244] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 10.736624][ T244] ? copy_msghdr_from_user (net/socket.c:2650) [ 10.736627][ T244] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 10.736628][ T244] ? move_addr_to_kernel (net/socket.c:258) [ 10.736635][ T244] ___sys_sendmsg (net/socket.c:2767) [ 10.736638][ T244] ? copy_msghdr_from_user (net/socket.c:2619) [ 10.736655][ T244] __sys_sendmsg (net/socket.c:2799) [ 10.736658][ T244] ? __sys_sendmsg_sock (net/socket.c:2780) [ 10.736664][ T244] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.736667][ T244] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.736670][ T244] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.736673][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.736675][ T244] RIP: 0033:0x7f091434554e [ 10.736678][ T244] 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 [ 10.736680][ T244] RSP: 002b:00007ffd48ce8ec0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.736682][ T244] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f091434554e [ 10.736684][ T244] RDX: 0000000000000000 RSI: 00007ffd48ce8f70 RDI: 0000000000000005 [ 10.736685][ T244] RBP: 00007ffd48ce8ed0 R08: 0000000000000000 R09: 0000000000000000 [ 10.736686][ T244] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b845 [ 10.736686][ T244] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd48ce9630 | [ 21.822442][ T348] softirqs last disabled at (15608): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 21.822450][ T348] Preemption disabled at: | [ 21.822451][ T348] 0x0 | [ 21.822461][ T348] Tainted: [W]=WARN [ 21.822462][ T348] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.822463][ T348] Call Trace: [ 21.822465][ T348] [ 21.822466][ T348] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 21.822472][ T348] __might_resched.cold (kernel/sched/core.c:9234) [ 21.822477][ T348] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 21.822481][ T348] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 21.822487][ T348] __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)) [ 21.822489][ T348] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 21.822495][ T348] ? 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) [ 21.822497][ T348] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 21.822500][ T348] put_chars (drivers/char/virtio_console.c:1176) [ 21.822503][ T348] ? __send_to_port (drivers/char/virtio_console.c:654) [ 21.822505][ T348] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 21.822509][ T348] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 21.822512][ T348] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 21.822515][ T348] ? mark_usage (kernel/locking/lockdep.c:4690) [ 21.822517][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 21.822518][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 21.822522][ T348] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 21.822524][ T348] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 21.822528][ T348] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 21.822532][ T348] console_emit_next_record (kernel/printk/printk.c:3183) [ 21.822536][ T348] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 21.822537][ T348] ? 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)) [ 21.822540][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 21.822544][ T348] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 21.822548][ T348] console_flush_one_record (kernel/printk/printk.c:3268) [ 21.822552][ T348] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 21.822554][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 21.822559][ T348] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 21.822562][ T348] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 21.822564][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 21.822566][ T348] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 21.822570][ T348] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 21.822571][ T348] ? vprintk_emit (kernel/printk/printk.c:2478) [ 21.822574][ T348] vprintk_emit (kernel/printk/printk.c:2479) [ 21.822579][ T348] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 21.822580][ T348] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 21.822583][ T348] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 21.822585][ T348] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 21.822589][ T348] _printk (kernel/printk/printk.c:2504) [ 21.822593][ T348] ? snapshot_read.cold (user.c:?) [ 21.822601][ T348] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 21.822611][ T348] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 21.822621][ T348] br_device_event (net/bridge/br.c:111) bridge [ 21.822628][ T348] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 21.822632][ T348] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 21.822638][ T348] notifier_call_chain (kernel/notifier.c:85) [ 21.822644][ T348] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 21.822652][ T348] ? netif_change_name (net/core/dev.c:1517) [ 21.822655][ T348] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 21.822658][ T348] ? __kernel_text_address (kernel/extable.c:79) [ 21.822660][ T348] ? write_profile (profile.c:?) [ 21.822663][ T348] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 21.822668][ T348] netif_change_flags (net/core/dev.c:9882) [ 21.822671][ T348] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 21.822675][ T348] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 21.822677][ T348] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 21.822678][ T348] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 21.822680][ T348] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 21.822683][ T348] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 21.822686][ T348] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 21.822688][ T348] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 21.822690][ T348] ? kasan_save_stack (mm/kasan/common.c:58) [ 21.822693][ T348] ? kasan_save_stack (mm/kasan/common.c:57) [ 21.822695][ T348] ? kasan_save_track (mm/kasan/common.c:78) [ 21.822697][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 21.822699][ T348] ? netlink_seq_next (net/netlink/af_netlink.c:2684) [ 21.822702][ T348] ? ___sys_sendmsg (net/socket.c:2757) [ 21.822707][ T348] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 21.822708][ T348] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 21.822711][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 21.822713][ T348] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 21.822715][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 21.822717][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 21.822719][ T348] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 21.822723][ T348] ? __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) [ 21.822725][ T348] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 21.822727][ T348] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 21.822730][ T348] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 21.822735][ T348] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 21.822740][ T348] rtnl_newlink (net/core/rtnetlink.c:4215) [ 21.822746][ T348] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 21.822747][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 21.822752][ T348] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 21.822754][ T348] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 21.822756][ T348] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 21.822757][ T348] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 21.822761][ T348] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 21.822763][ T348] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 21.822766][ T348] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 21.822767][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 21.822772][ T348] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 21.822773][ T348] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 21.822777][ T348] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 21.822778][ T348] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 21.822781][ T348] ? netlink_ack (./include/linux/skbuff.h:2718) [ 21.822787][ T348] ? 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)) [ 21.822789][ T348] ? 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)) [ 21.822793][ T348] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 21.822797][ T348] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 21.822799][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 21.822803][ T348] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 21.822807][ T348] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 21.822811][ T348] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 21.822816][ T348] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 21.822819][ T348] ? copy_msghdr_from_user (net/socket.c:2650) [ 21.822821][ T348] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 21.822823][ T348] ? move_addr_to_kernel (net/socket.c:258) [ 21.822830][ T348] ___sys_sendmsg (net/socket.c:2767) [ 21.822833][ T348] ? copy_msghdr_from_user (net/socket.c:2619) [ 21.822849][ T348] __sys_sendmsg (net/socket.c:2799) [ 21.822852][ T348] ? __sys_sendmsg_sock (net/socket.c:2780) [ 21.822858][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 21.822861][ T348] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 21.822864][ T348] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 21.822867][ T348] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 21.822869][ T348] RIP: 0033:0x7f8dc4f0354e [ 21.822871][ T348] 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 [ 21.822873][ T348] RSP: 002b:00007ffdc0a2c090 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 21.822875][ T348] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8dc4f0354e [ 21.822877][ T348] RDX: 0000000000000000 RSI: 00007ffdc0a2c140 RDI: 0000000000000005 [ 21.822877][ T348] RBP: 00007ffdc0a2c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 21.822878][ T348] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b850 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