====================================== | [ 10.038159][ T192] softirqs last disabled at (33293): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 10.038162][ T192] Preemption disabled at: | [ 10.038163][ T192] 0x0 | [ 10.038173][ T192] Tainted: [W]=WARN [ 10.038174][ T192] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.038176][ T192] Call Trace: [ 10.038177][ T192] [ 10.038179][ T192] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.038185][ T192] __might_resched.cold (kernel/sched/core.c:9234) [ 10.038190][ T192] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.038194][ T192] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.038199][ T192] __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)) [ 10.038201][ T192] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.038207][ T192] ? 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) [ 10.038210][ T192] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.038214][ T192] put_chars (drivers/char/virtio_console.c:1176) [ 10.038217][ T192] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.038218][ T192] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.038223][ T192] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.038228][ T192] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.038234][ T192] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.038236][ T192] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.038239][ T192] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.038243][ T192] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.038247][ T192] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.038249][ T192] ? 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)) [ 10.038252][ T192] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.038254][ T192] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.038258][ T192] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.038262][ T192] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.038264][ T192] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.038269][ T192] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.038272][ T192] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.038274][ T192] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.038276][ T192] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 10.038282][ T192] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.038284][ T192] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.038287][ T192] vprintk_emit (kernel/printk/printk.c:2479) [ 10.038291][ T192] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.038295][ T192] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.038299][ T192] _printk (kernel/printk/printk.c:2504) [ 10.038302][ T192] ? snapshot_read.cold (user.c:?) [ 10.038305][ T192] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 10.038308][ T192] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 10.038312][ T192] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 10.038314][ T192] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 10.038318][ T192] ? exit_notify (kernel/exit.c:780) [ 10.038320][ T192] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.038323][ T192] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.038327][ T192] do_group_exit (kernel/exit.c:1151) [ 10.038330][ T192] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 10.038332][ T192] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 10.038334][ T192] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.038337][ T192] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.038341][ T192] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.038343][ T192] RIP: 0033:0x7f377469b1b8 [ 10.038345][ T192] Code: Unable to access opcode bytes at 0x7f377469b18e. Code starting with the faulting instruction =========================================== [ 10.038346][ T192] RSP: 002b:00007fff041a74d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.038349][ T192] RAX: ffffffffffffffda RBX: 00007f37747cbf88 RCX: 00007f377469b1b8 [ 10.038350][ T192] RDX: 00007f37743e5fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 10.038351][ T192] RBP: 00007fff041a7530 R08: 0000000000000000 R09: 0000000000008010 [ 10.038352][ T192] R10: 00007fff041a72f0 R11: 0000000000000246 R12: 0000000000000001 [ 10.038353][ T192] R13: 0000000000000000 R14: 00007f37747ca680 R15: 00007f37747cbfa0 | [ 11.179484][ T240] softirqs last disabled at (17284): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 11.179486][ T240] Preemption disabled at: | [ 11.179487][ T240] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.179497][ T240] Tainted: [W]=WARN [ 11.179497][ T240] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.179499][ T240] Call Trace: [ 11.179501][ T240] [ 11.179502][ T240] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.179508][ T240] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.179510][ T240] __might_resched.cold (kernel/sched/core.c:9234) [ 11.179515][ T240] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.179519][ T240] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.179524][ T240] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 11.179526][ T240] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.179532][ T240] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 11.179535][ T240] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.179538][ T240] put_chars (drivers/char/virtio_console.c:1176) [ 11.179540][ T240] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.179545][ T240] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.179548][ T240] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.179551][ T240] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.179553][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.179555][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.179558][ T240] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.179560][ T240] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.179564][ T240] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.179568][ T240] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.179572][ T240] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.179575][ T240] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.179577][ T240] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 11.179580][ T240] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.179583][ T240] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.179587][ T240] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.179591][ T240] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.179592][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.179598][ T240] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.179601][ T240] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.179602][ T240] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.179605][ T240] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 11.179608][ T240] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.179610][ T240] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.179613][ T240] vprintk_emit (kernel/printk/printk.c:2479) [ 11.179617][ T240] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.179620][ T240] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.179621][ T240] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.179626][ T240] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.179629][ T240] _printk (kernel/printk/printk.c:2504) [ 11.179633][ T240] ? snapshot_read.cold (user.c:?) [ 11.179637][ T240] ? br_multicast_flood (??:?) bridge [ 11.179649][ T240] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.179651][ T240] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.179652][ T240] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.179656][ T240] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 11.179666][ T240] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 11.179674][ T240] new_nbp (net/bridge/br_if.c:449) bridge [ 11.179684][ T240] br_add_if (net/bridge/br_if.c:592) bridge [ 11.179691][ T240] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 11.179695][ T240] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.179698][ T240] ? __kernel_text_address (kernel/extable.c:79) [ 11.179702][ T240] do_set_master (net/core/rtnetlink.c:3071) [ 11.179706][ T240] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.179710][ T240] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.179713][ T240] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.179714][ T240] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.179716][ T240] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.179720][ T240] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.179723][ T240] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.179725][ T240] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.179727][ T240] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.179730][ T240] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.179732][ T240] ? kasan_save_track (mm/kasan/common.c:78) [ 11.179735][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.179736][ T240] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 11.179739][ T240] ? ___sys_sendmsg (net/socket.c:2757) [ 11.179744][ T240] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.179746][ T240] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.179748][ T240] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.179751][ T240] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.179752][ T240] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.179754][ T240] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.179756][ T240] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.179760][ T240] ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821) [ 11.179762][ T240] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.179764][ T240] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.179767][ T240] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.179769][ T240] ? nla_get_range_signed (lib/nlattr.c:270) [ 11.179774][ T240] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.179779][ T240] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.179784][ T240] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.179786][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.179790][ T240] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.179792][ T240] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.179794][ T240] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.179796][ T240] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.179800][ T240] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.179802][ T240] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.179805][ T240] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.179806][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.179811][ T240] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.179812][ T240] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.179816][ T240] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.179818][ T240] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.179820][ T240] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.179827][ T240] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2)) [ 11.179828][ T240] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2)) [ 11.179832][ T240] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.179836][ T240] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.179839][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.179843][ T240] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.179847][ T240] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.179851][ T240] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.179856][ T240] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 11.179858][ T240] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.179861][ T240] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 11.179862][ T240] ? move_addr_to_kernel (net/socket.c:258) [ 11.179869][ T240] ___sys_sendmsg (net/socket.c:2767) [ 11.179872][ T240] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.179888][ T240] __sys_sendmsg (net/socket.c:2799) [ 11.179891][ T240] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.179897][ T240] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.179900][ T240] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.179903][ T240] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.179906][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.179908][ T240] RIP: 0033:0x7fb515bb954e [ 11.179912][ T240] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 b4 bd 00 00 call 0xbdbc 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 11.179913][ T240] RSP: 002b:00007fff03f04af0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.179916][ T240] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fb515bb954e [ 11.179917][ T240] RDX: 0000000000000000 RSI: 00007fff03f04ba0 RDI: 0000000000000005 [ 11.179918][ T240] RBP: 00007fff03f04b00 R08: 0000000000000000 R09: 0000000000000000 [ 11.179919][ T240] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a910f53 [ 11.179920][ T240] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff03f05260 | [ 26.322011][ T623] softirqs last disabled at (22738): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 26.322019][ T623] Preemption disabled at: | [ 26.322020][ T623] 0x0 | [ 26.322029][ T623] Tainted: [W]=WARN [ 26.322030][ T623] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 26.322032][ T623] Call Trace: [ 26.322034][ T623] [ 26.322035][ T623] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 26.322042][ T623] __might_resched.cold (kernel/sched/core.c:9234) [ 26.322046][ T623] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 26.322051][ T623] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 26.322056][ T623] __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)) [ 26.322058][ T623] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 26.322064][ T623] ? 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) [ 26.322066][ T623] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 26.322070][ T623] put_chars (drivers/char/virtio_console.c:1176) [ 26.322072][ T623] ? __send_to_port (drivers/char/virtio_console.c:654) [ 26.322074][ T623] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 26.322078][ T623] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 26.322082][ T623] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 26.322085][ T623] ? mark_usage (kernel/locking/lockdep.c:4690) [ 26.322086][ T623] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.322088][ T623] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.322092][ T623] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 26.322093][ T623] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.322098][ T623] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 26.322102][ T623] console_emit_next_record (kernel/printk/printk.c:3183) [ 26.322106][ T623] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 26.322107][ T623] ? 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)) [ 26.322111][ T623] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.322115][ T623] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 26.322119][ T623] console_flush_one_record (kernel/printk/printk.c:3268) [ 26.322123][ T623] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 26.322125][ T623] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.322130][ T623] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 26.322133][ T623] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 26.322134][ T623] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.322137][ T623] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 26.322140][ T623] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 26.322142][ T623] ? vprintk_emit (kernel/printk/printk.c:2478) [ 26.322146][ T623] vprintk_emit (kernel/printk/printk.c:2479) [ 26.322150][ T623] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 26.322151][ T623] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 26.322154][ T623] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 26.322157][ T623] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 26.322161][ T623] _printk (kernel/printk/printk.c:2504) [ 26.322165][ T623] ? snapshot_read.cold (user.c:?) [ 26.322173][ T623] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 26.322184][ T623] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 26.322194][ T623] br_device_event (net/bridge/br.c:111) bridge [ 26.322207][ T623] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 26.322211][ T623] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 26.322217][ T623] notifier_call_chain (kernel/notifier.c:85) [ 26.322223][ T623] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 26.322228][ T623] ? netif_change_name (net/core/dev.c:1517) [ 26.322231][ T623] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 26.322234][ T623] ? __kernel_text_address (kernel/extable.c:79) [ 26.322237][ T623] ? write_profile (profile.c:?) [ 26.322239][ T623] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 26.322244][ T623] netif_change_flags (net/core/dev.c:9882) [ 26.322248][ T623] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 26.322252][ T623] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 26.322254][ T623] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 26.322255][ T623] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 26.322257][ T623] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 26.322261][ T623] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 26.322264][ T623] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 26.322265][ T623] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 26.322268][ T623] ? kasan_save_stack (mm/kasan/common.c:58) [ 26.322271][ T623] ? kasan_save_stack (mm/kasan/common.c:57) [ 26.322273][ T623] ? kasan_save_track (mm/kasan/common.c:78) [ 26.322276][ T623] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.322278][ T623] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 26.322283][ T623] ? ___sys_sendmsg (net/socket.c:2757) [ 26.322287][ T623] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.322289][ T623] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 26.322292][ T623] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.322294][ T623] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 26.322296][ T623] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.322298][ T623] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.322300][ T623] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 26.322304][ T623] ? __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) [ 26.322306][ T623] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 26.322308][ T623] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 26.322311][ T623] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 26.322317][ T623] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 26.322322][ T623] rtnl_newlink (net/core/rtnetlink.c:4215) [ 26.322327][ T623] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 26.322329][ T623] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.322334][ T623] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.322336][ T623] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 26.322338][ T623] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 26.322340][ T623] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 26.322343][ T623] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 26.322345][ T623] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 26.322349][ T623] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 26.322350][ T623] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.322354][ T623] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.322356][ T623] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 26.322360][ T623] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 26.322361][ T623] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 26.322364][ T623] ? netlink_ack (./include/linux/skbuff.h:2718) [ 26.322371][ T623] ? 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)) [ 26.322372][ T623] ? 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)) [ 26.322376][ T623] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 26.322380][ T623] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 26.322383][ T623] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.322387][ T623] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 26.322391][ T623] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 26.322395][ T623] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 26.322401][ T623] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 26.322403][ T623] ? copy_msghdr_from_user (net/socket.c:2650) [ 26.322405][ T623] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 26.322407][ T623] ? move_addr_to_kernel (net/socket.c:258) [ 26.322414][ T623] ___sys_sendmsg (net/socket.c:2767) [ 26.322417][ T623] ? copy_msghdr_from_user (net/socket.c:2619) [ 26.322433][ T623] __sys_sendmsg (net/socket.c:2799) [ 26.322436][ T623] ? __sys_sendmsg_sock (net/socket.c:2780) [ 26.322442][ T623] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.322446][ T623] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 26.322448][ T623] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 26.322451][ T623] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 26.322453][ T623] RIP: 0033:0x7f169fedf54e [ 26.322456][ T623] 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 [ 26.322457][ T623] RSP: 002b:00007ffeb926aee0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 26.322460][ T623] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f169fedf54e [ 26.322461][ T623] RDX: 0000000000000000 RSI: 00007ffeb926af90 RDI: 0000000000000005 [ 26.322462][ T623] RBP: 00007ffeb926aef0 R08: 0000000000000000 R09: 0000000000000000 [ 26.322463][ T623] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a910f62 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