====================================== | [ 9.320076][ T204] softirqs last disabled at (30532): netlink_release (./include/net/sock.h:2138 net/netlink/af_netlink.c:727) | [ 9.320079][ T204] Preemption disabled at: | [ 9.320079][ T204] 0x0 | [ 9.320089][ T204] Tainted: [W]=WARN [ 9.320090][ T204] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.320091][ T204] Call Trace: [ 9.320093][ T204] [ 9.320094][ T204] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.320101][ T204] __might_resched.cold (kernel/sched/core.c:9234) [ 9.320105][ T204] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.320109][ T204] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.320113][ T204] __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)) [ 9.320115][ T204] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.320122][ T204] ? 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) [ 9.320124][ T204] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.320128][ T204] put_chars (drivers/char/virtio_console.c:1176) [ 9.320130][ T204] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.320132][ T204] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.320135][ T204] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.320141][ T204] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.320148][ T204] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.320151][ T204] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.320152][ T204] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.320156][ T204] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.320161][ T204] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.320162][ T204] ? 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)) [ 9.320166][ T204] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.320167][ T204] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.320171][ T204] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.320175][ T204] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.320177][ T204] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.320182][ T204] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.320185][ T204] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.320187][ T204] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.320189][ T204] ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871) [ 9.320192][ T204] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.320194][ T204] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.320197][ T204] vprintk_emit (kernel/printk/printk.c:2479) [ 9.320200][ T204] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.320202][ T204] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.320206][ T204] _printk (kernel/printk/printk.c:2504) [ 9.320210][ T204] ? snapshot_read.cold (user.c:?) [ 9.320212][ T204] ? 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) [ 9.320215][ T204] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.320218][ T204] ? 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) [ 9.320221][ T204] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.320225][ T204] ? exit_notify (kernel/exit.c:780) [ 9.320226][ T204] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.320229][ T204] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.320232][ T204] do_group_exit (kernel/exit.c:1151) [ 9.320235][ T204] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.320237][ T204] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.320239][ T204] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.320247][ T204] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.320250][ T204] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.320252][ T204] RIP: 0033:0x7f32b41211b8 [ 9.320254][ T204] Code: Unable to access opcode bytes at 0x7f32b412118e. Code starting with the faulting instruction =========================================== [ 9.320255][ T204] RSP: 002b:00007ffe15776548 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.320258][ T204] RAX: ffffffffffffffda RBX: 00007f32b4251f88 RCX: 00007f32b41211b8 [ 9.320259][ T204] RDX: 00007f32b3e6bfc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.320260][ T204] RBP: 00007ffe157765a0 R08: 0000000000000000 R09: 0000000000000050 [ 9.320261][ T204] R10: 00007ffe15776360 R11: 0000000000000246 R12: 0000000000000001 [ 9.320261][ T204] R13: 0000000000000000 R14: 00007f32b4250680 R15: 00007f32b4251fa0 | [ 10.424735][ T250] softirqs last disabled at (14358): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 10.424738][ T250] Preemption disabled at: | [ 10.424739][ T250] vprintk_emit (kernel/printk/printk.c:2471) | [ 10.424747][ T250] Tainted: [W]=WARN [ 10.424748][ T250] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.424750][ T250] Call Trace: [ 10.424751][ T250] [ 10.424752][ T250] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.424758][ T250] ? vprintk_emit (kernel/printk/printk.c:2471) [ 10.424760][ T250] __might_resched.cold (kernel/sched/core.c:9234) [ 10.424765][ T250] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.424769][ T250] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.424773][ T250] __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)) [ 10.424775][ T250] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.424781][ T250] ? 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) [ 10.424784][ T250] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.424788][ T250] put_chars (drivers/char/virtio_console.c:1176) [ 10.424790][ T250] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.424791][ T250] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.424795][ T250] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.424800][ T250] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.424808][ T250] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.424811][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.424813][ T250] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.424817][ T250] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.424821][ T250] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.424823][ T250] ? 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)) [ 10.424826][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.424828][ T250] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.424832][ T250] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.424836][ T250] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.424838][ T250] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.424843][ T250] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.424846][ T250] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.424848][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.424849][ T250] ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871) [ 10.424853][ T250] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.424855][ T250] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.424857][ T250] vprintk_emit (kernel/printk/printk.c:2479) [ 10.424860][ T250] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.424862][ T250] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.424864][ T250] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 10.424870][ T250] _printk (kernel/printk/printk.c:2504) [ 10.424874][ T250] ? snapshot_read.cold (user.c:?) [ 10.424878][ T250] ? br_multicast_flood (??:?) [ 10.424881][ T250] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.424882][ T250] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.424884][ T250] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.424888][ T250] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) [ 10.424893][ T250] br_init_port (net/bridge/br_stp_if.c:39) [ 10.424895][ T250] new_nbp (net/bridge/br_if.c:449) [ 10.424899][ T250] br_add_if (net/bridge/br_if.c:592) [ 10.424901][ T250] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 10.424905][ T250] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 10.424911][ T250] do_set_master (net/core/rtnetlink.c:3071) [ 10.424915][ T250] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.424918][ T250] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 10.424921][ T250] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 10.424923][ T250] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 10.424925][ T250] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 10.424929][ T250] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.424931][ T250] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.424932][ T250] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.424935][ T250] ? kasan_save_stack (mm/kasan/common.c:58) [ 10.424937][ T250] ? kasan_save_stack (mm/kasan/common.c:57) [ 10.424938][ T250] ? kasan_save_track (mm/kasan/common.c:78) [ 10.424939][ T250] ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) [ 10.424942][ T250] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.424944][ T250] ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320) [ 10.424946][ T250] ? ___sys_sendmsg (net/socket.c:2758) [ 10.424950][ T250] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.424952][ T250] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.424954][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.424956][ T250] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.424958][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.424959][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.424960][ T250] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 10.424963][ T250] ? __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) [ 10.424964][ T250] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 10.424966][ T250] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.424969][ T250] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 10.424971][ T250] ? nla_get_range_signed (lib/nlattr.c:270) [ 10.424976][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.424978][ T250] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 10.424983][ T250] rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.424988][ T250] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.424990][ T250] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.424994][ T250] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.424996][ T250] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.424999][ T250] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.425000][ T250] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.425004][ T250] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.425006][ T250] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.425009][ T250] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.425010][ T250] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.425015][ T250] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.425017][ T250] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.425020][ T250] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 10.425023][ T250] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.425026][ T250] ? netlink_ack (./include/linux/skbuff.h:2718) [ 10.425032][ T250] ? 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)) [ 10.425034][ T250] ? 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)) [ 10.425039][ T250] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 10.425043][ T250] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 10.425045][ T250] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.425049][ T250] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 10.425053][ T250] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 10.425057][ T250] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.425059][ T250] ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373) [ 10.425064][ T250] __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4)) [ 10.425067][ T250] ____sys_sendmsg (net/socket.c:2713) [ 10.425069][ T250] ? copy_msghdr_from_user (net/socket.c:2650) [ 10.425071][ T250] ? sock_write_iter (net/socket.c:1269) [ 10.425073][ T250] ? move_addr_to_kernel (net/socket.c:258) [ 10.425080][ T250] ___sys_sendmsg (net/socket.c:2767) [ 10.425083][ T250] ? copy_msghdr_from_user (net/socket.c:2619) [ 10.425099][ T250] __sys_sendmsg (net/socket.c:2799) [ 10.425102][ T250] ? __sys_sendmsg_sock (net/socket.c:2780) [ 10.425109][ T250] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.425112][ T250] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.425115][ T250] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.425117][ T250] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.425120][ T250] RIP: 0033:0x7f2c3af9d54e [ 10.425123][ T250] 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 [ 10.425125][ T250] RSP: 002b:00007fff1faafa70 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.425127][ T250] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2c3af9d54e [ 10.425129][ T250] RDX: 0000000000000000 RSI: 00007fff1faafb20 RDI: 0000000000000005 [ 10.425129][ T250] RBP: 00007fff1faafa80 R08: 0000000000000000 R09: 0000000000000000 [ 10.425130][ T250] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c84e [ 10.425131][ T250] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff1fab01f0 | [ 11.718482][ T302] softirqs last disabled at (24220): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) | [ 11.718484][ T302] Preemption disabled at: | [ 11.718485][ T302] 0x0 | [ 11.718494][ T302] Tainted: [W]=WARN [ 11.718495][ T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.718497][ T302] Call Trace: [ 11.718498][ T302] [ 11.718499][ T302] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.718506][ T302] __might_resched.cold (kernel/sched/core.c:9234) [ 11.718511][ T302] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.718515][ T302] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.718519][ T302] __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)) [ 11.718521][ T302] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.718528][ T302] ? 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) [ 11.718531][ T302] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.718534][ T302] put_chars (drivers/char/virtio_console.c:1176) [ 11.718537][ T302] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.718543][ T302] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.718550][ T302] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.718554][ T302] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.718558][ T302] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.718562][ T302] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.718564][ T302] ? 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)) [ 11.718567][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.718570][ T302] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.718573][ T302] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.718578][ T302] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.718579][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.718585][ T302] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.718587][ T302] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.718589][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.718591][ T302] ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871) [ 11.718595][ T302] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.718596][ T302] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.718599][ T302] vprintk_emit (kernel/printk/printk.c:2479) [ 11.718602][ T302] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.718603][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.718606][ T302] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.718608][ T302] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.718612][ T302] _printk (kernel/printk/printk.c:2504) [ 11.718616][ T302] ? snapshot_read.cold (user.c:?) [ 11.718623][ T302] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) [ 11.718628][ T302] br_stp_disable_port (net/bridge/br_stp_if.c:106) [ 11.718631][ T302] br_device_event (net/bridge/br.c:111) [ 11.718633][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.718637][ T302] ? packet_sendmsg_spkt (af_packet.c:?) [ 11.718643][ T302] notifier_call_chain (kernel/notifier.c:85) [ 11.718649][ T302] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 11.718654][ T302] ? netif_change_name (net/core/dev.c:1517) [ 11.718657][ T302] ? netif_set_allmulti (./include/net/netdev_lock.h:33) [ 11.718661][ T302] ? __kernel_text_address (kernel/extable.c:79) [ 11.718663][ T302] ? write_profile (profile.c:?) [ 11.718668][ T302] netif_change_flags (net/core/dev.c:9882) [ 11.718672][ T302] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 11.718675][ T302] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.718678][ T302] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.718679][ T302] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.718681][ T302] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.718684][ T302] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.718686][ T302] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.718688][ T302] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.718690][ T302] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.718693][ T302] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.718694][ T302] ? kasan_save_track (mm/kasan/common.c:78) [ 11.718695][ T302] ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) [ 11.718697][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.718699][ T302] ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320) [ 11.718702][ T302] ? ___sys_sendmsg (net/socket.c:2758) [ 11.718706][ T302] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.718708][ T302] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.718710][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.718712][ T302] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.718713][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.718714][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.718716][ T302] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.718718][ T302] ? __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) [ 11.718720][ T302] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.718722][ T302] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.718725][ T302] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.718728][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.718731][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.718736][ T302] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.718741][ T302] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.718743][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.718747][ T302] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.718749][ T302] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.718751][ T302] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.718753][ T302] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.718757][ T302] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.718759][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.718762][ T302] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.718763][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.718768][ T302] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.718770][ T302] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.718773][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.718776][ T302] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.718779][ T302] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.718785][ T302] ? 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)) [ 11.718788][ T302] ? 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)) [ 11.718792][ T302] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.718796][ T302] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.718798][ T302] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.718803][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.718807][ T302] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.718810][ T302] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.718812][ T302] ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373) [ 11.718817][ T302] __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4)) [ 11.718820][ T302] ____sys_sendmsg (net/socket.c:2713) [ 11.718822][ T302] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.718825][ T302] ? sock_write_iter (net/socket.c:1269) [ 11.718826][ T302] ? move_addr_to_kernel (net/socket.c:258) [ 11.718834][ T302] ___sys_sendmsg (net/socket.c:2767) [ 11.718836][ T302] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.718852][ T302] __sys_sendmsg (net/socket.c:2799) [ 11.718855][ T302] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.718861][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.718864][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.718868][ T302] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.718870][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.718872][ T302] RIP: 0033:0x7f189c88b54e [ 11.718875][ T302] 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 [ 11.718876][ T302] RSP: 002b:00007ffe8a954a10 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.718879][ T302] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f189c88b54e [ 11.718880][ T302] RDX: 0000000000000000 RSI: 00007ffe8a954ac0 RDI: 0000000000000005 [ 11.718881][ T302] RBP: 00007ffe8a954a20 R08: 0000000000000000 R09: 0000000000000000 [ 11.718882][ T302] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c850 Finger prints: netlink_release:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print __alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars