====================================== | [ 9.787764][ T203] softirqs last disabled at (35388): netlink_release (./include/net/sock.h:2138 net/netlink/af_netlink.c:727) | [ 9.787767][ T203] Preemption disabled at: | [ 9.787768][ T203] 0x0 | [ 9.787778][ T203] Tainted: [W]=WARN [ 9.787779][ T203] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.787780][ T203] Call Trace: [ 9.787782][ T203] [ 9.787783][ T203] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.787790][ T203] __might_resched.cold (kernel/sched/core.c:9234) [ 9.787794][ T203] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.787799][ T203] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.787803][ T203] __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)) [ 9.787805][ T203] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.787811][ T203] ? 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) [ 9.787814][ T203] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.787818][ T203] put_chars (drivers/char/virtio_console.c:1176) [ 9.787820][ T203] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.787822][ T203] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.787825][ T203] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.787830][ T203] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.787838][ T203] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.787840][ T203] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.787842][ T203] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.787846][ T203] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.787850][ T203] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.787852][ T203] ? 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)) [ 9.787856][ T203] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.787857][ T203] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.787861][ T203] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.787865][ T203] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.787867][ T203] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.787872][ T203] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.787875][ T203] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.787877][ T203] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.787879][ T203] ? 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) [ 9.787882][ T203] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.787884][ T203] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.787887][ T203] vprintk_emit (kernel/printk/printk.c:2479) [ 9.787890][ T203] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.787892][ T203] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.787896][ T203] _printk (kernel/printk/printk.c:2504) [ 9.787900][ T203] ? snapshot_read.cold (user.c:?) [ 9.787903][ T203] ? 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) [ 9.787905][ T203] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.787909][ T203] ? 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) [ 9.787912][ T203] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.787916][ T203] ? exit_notify (kernel/exit.c:780) [ 9.787917][ T203] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.787920][ T203] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.787923][ T203] do_group_exit (kernel/exit.c:1151) [ 9.787926][ T203] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.787928][ T203] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.787930][ T203] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.787934][ T203] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.787937][ T203] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.787939][ T203] RIP: 0033:0x7fa2552961b8 [ 9.787941][ T203] Code: Unable to access opcode bytes at 0x7fa25529618e. Code starting with the faulting instruction =========================================== [ 9.787943][ T203] RSP: 002b:00007ffd1c663598 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.787945][ T203] RAX: ffffffffffffffda RBX: 00007fa2553c6f88 RCX: 00007fa2552961b8 [ 9.787946][ T203] RDX: 00007fa254fe0fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.787947][ T203] RBP: 00007ffd1c6635f0 R08: 0000000000000000 R09: 0000000000000050 [ 9.787948][ T203] R10: 00007ffd1c6633b0 R11: 0000000000000246 R12: 0000000000000001 [ 9.787949][ T203] R13: 0000000000000000 R14: 00007fa2553c5680 R15: 00007fa2553c6fa0 | [ 10.894619][ T251] softirqs last disabled at (16264): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 10.894621][ T251] Preemption disabled at: | [ 10.894622][ T251] vprintk_emit (kernel/printk/printk.c:2471) | [ 10.894630][ T251] Tainted: [W]=WARN [ 10.894631][ T251] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.894633][ T251] Call Trace: [ 10.894634][ T251] [ 10.894636][ T251] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 10.894641][ T251] ? vprintk_emit (kernel/printk/printk.c:2471) [ 10.894643][ T251] __might_resched.cold (kernel/sched/core.c:9234) [ 10.894648][ T251] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 10.894652][ T251] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 10.894660][ T251] __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)) [ 10.894662][ T251] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.894668][ T251] ? 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) [ 10.894671][ T251] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 10.894675][ T251] put_chars (drivers/char/virtio_console.c:1176) [ 10.894677][ T251] ? __send_to_port (drivers/char/virtio_console.c:654) [ 10.894679][ T251] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.894682][ T251] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.894692][ T251] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 10.894700][ T251] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 10.894702][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.894704][ T251] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.894708][ T251] console_emit_next_record (kernel/printk/printk.c:3183) [ 10.894712][ T251] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 10.894714][ T251] ? 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)) [ 10.894718][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.894719][ T251] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.894723][ T251] console_flush_one_record (kernel/printk/printk.c:3268) [ 10.894728][ T251] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 10.894729][ T251] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.894735][ T251] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 10.894738][ T251] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 10.894740][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.894741][ T251] ? 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) [ 10.894745][ T251] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 10.894747][ T251] ? vprintk_emit (kernel/printk/printk.c:2478) [ 10.894749][ T251] vprintk_emit (kernel/printk/printk.c:2479) [ 10.894752][ T251] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 10.894754][ T251] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.894756][ T251] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 10.894762][ T251] _printk (kernel/printk/printk.c:2504) [ 10.894766][ T251] ? snapshot_read.cold (user.c:?) [ 10.894770][ T251] ? br_multicast_flood (??:?) [ 10.894773][ T251] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.894774][ T251] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.894776][ T251] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.894780][ T251] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) [ 10.894785][ T251] br_init_port (net/bridge/br_stp_if.c:39) [ 10.894787][ T251] new_nbp (net/bridge/br_if.c:449) [ 10.894791][ T251] br_add_if (net/bridge/br_if.c:592) [ 10.894794][ T251] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 10.894797][ T251] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 10.894803][ T251] do_set_master (net/core/rtnetlink.c:3071) [ 10.894806][ T251] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 10.894810][ T251] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 10.894813][ T251] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 10.894814][ T251] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 10.894817][ T251] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 10.894821][ T251] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 10.894822][ T251] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.894824][ T251] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 10.894827][ T251] ? kasan_save_stack (mm/kasan/common.c:58) [ 10.894829][ T251] ? kasan_save_stack (mm/kasan/common.c:57) [ 10.894831][ T251] ? kasan_save_track (mm/kasan/common.c:78) [ 10.894832][ T251] ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) [ 10.894834][ T251] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.894836][ T251] ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320) [ 10.894839][ T251] ? ___sys_sendmsg (net/socket.c:2758) [ 10.894843][ T251] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.894845][ T251] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.894847][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.894849][ T251] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 10.894851][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.894852][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.894854][ T251] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 10.894856][ T251] ? __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) [ 10.894857][ T251] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 10.894859][ T251] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 10.894863][ T251] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 10.894864][ T251] ? nla_get_range_signed (lib/nlattr.c:270) [ 10.894869][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.894871][ T251] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 10.894876][ T251] rtnl_newlink (net/core/rtnetlink.c:4215) [ 10.894881][ T251] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.894883][ T251] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.894888][ T251] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.894890][ T251] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.894892][ T251] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.894894][ T251] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.894897][ T251] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 10.894899][ T251] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 10.894902][ T251] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.894904][ T251] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 10.894908][ T251] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 10.894910][ T251] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.894913][ T251] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 10.894917][ T251] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 10.894920][ T251] ? netlink_ack (./include/linux/skbuff.h:2718) [ 10.894926][ T251] ? 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)) [ 10.894928][ T251] ? 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)) [ 10.894932][ T251] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 10.894936][ T251] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 10.894939][ T251] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 10.894943][ T251] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 10.894947][ T251] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 10.894951][ T251] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 10.894952][ T251] ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373) [ 10.894958][ T251] __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4)) [ 10.894961][ T251] ____sys_sendmsg (net/socket.c:2713) [ 10.894963][ T251] ? copy_msghdr_from_user (net/socket.c:2650) [ 10.894965][ T251] ? sock_write_iter (net/socket.c:1269) [ 10.894967][ T251] ? move_addr_to_kernel (net/socket.c:258) [ 10.894974][ T251] ___sys_sendmsg (net/socket.c:2767) [ 10.894977][ T251] ? copy_msghdr_from_user (net/socket.c:2619) [ 10.894992][ T251] __sys_sendmsg (net/socket.c:2799) [ 10.894995][ T251] ? __sys_sendmsg_sock (net/socket.c:2780) [ 10.895001][ T251] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 10.895004][ T251] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 10.895007][ T251] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 10.895010][ T251] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.895012][ T251] RIP: 0033:0x7fdb9fea554e [ 10.895015][ T251] 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 [ 10.895017][ T251] RSP: 002b:00007ffdd677f0d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.895020][ T251] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdb9fea554e [ 10.895021][ T251] RDX: 0000000000000000 RSI: 00007ffdd677f180 RDI: 0000000000000005 [ 10.895022][ T251] RBP: 00007ffdd677f0e0 R08: 0000000000000000 R09: 0000000000000000 [ 10.895022][ T251] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911ed5 [ 10.895023][ T251] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdd677f850 | [ 11.917586][ T282] softirqs last disabled at (27392): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119) | [ 11.917589][ T282] Preemption disabled at: | [ 11.917589][ T282] 0x0 | [ 11.917599][ T282] Tainted: [W]=WARN [ 11.917600][ T282] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.917602][ T282] Call Trace: [ 11.917603][ T282] [ 11.917605][ T282] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.917611][ T282] __might_resched.cold (kernel/sched/core.c:9234) [ 11.917616][ T282] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.917620][ T282] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.917625][ T282] __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)) [ 11.917626][ T282] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.917633][ T282] ? 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) [ 11.917636][ T282] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.917639][ T282] put_chars (drivers/char/virtio_console.c:1176) [ 11.917642][ T282] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.917643][ T282] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.917646][ T282] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.917652][ T282] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.917662][ T282] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.917664][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917666][ T282] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.917670][ T282] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.917674][ T282] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.917676][ T282] ? 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)) [ 11.917679][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917681][ T282] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.917685][ T282] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.917693][ T282] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.917695][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.917701][ T282] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.917704][ T282] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.917705][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917707][ T282] ? 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) [ 11.917711][ T282] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.917713][ T282] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.917715][ T282] vprintk_emit (kernel/printk/printk.c:2479) [ 11.917718][ T282] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.917720][ T282] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.917722][ T282] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.917727][ T282] _printk (kernel/printk/printk.c:2504) [ 11.917731][ T282] ? snapshot_read.cold (user.c:?) [ 11.917736][ T282] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.917739][ T282] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) [ 11.917744][ T282] br_init_port (net/bridge/br_stp_if.c:39) [ 11.917747][ T282] br_stp_enable_port (net/bridge/br_stp_if.c:93) [ 11.917749][ T282] br_device_event (net/bridge/br.c:120) [ 11.917752][ T282] ? packet_sendmsg_spkt (af_packet.c:?) [ 11.917757][ T282] notifier_call_chain (kernel/notifier.c:85) [ 11.917763][ T282] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853) [ 11.917768][ T282] ? netif_change_name (net/core/dev.c:1517) [ 11.917772][ T282] ? netif_set_allmulti (./include/net/netdev_lock.h:33) [ 11.917774][ T282] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.917777][ T282] ? __kernel_text_address (kernel/extable.c:79) [ 11.917779][ T282] ? write_profile (profile.c:?) [ 11.917784][ T282] netif_change_flags (net/core/dev.c:9882) [ 11.917788][ T282] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 11.917791][ T282] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.917793][ T282] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.917794][ T282] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.917796][ T282] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.917800][ T282] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.917802][ T282] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.917804][ T282] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.917806][ T282] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.917809][ T282] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.917810][ T282] ? kasan_save_track (mm/kasan/common.c:78) [ 11.917811][ T282] ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) [ 11.917813][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.917815][ T282] ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320) [ 11.917818][ T282] ? ___sys_sendmsg (net/socket.c:2758) [ 11.917822][ T282] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.917824][ T282] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.917827][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917828][ T282] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.917830][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917831][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917833][ T282] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.917835][ T282] ? __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) [ 11.917838][ T282] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.917840][ T282] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.917843][ T282] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.917847][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917849][ T282] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.917854][ T282] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.917859][ T282] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.917861][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.917866][ T282] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.917868][ T282] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.917870][ T282] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.917872][ T282] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.917876][ T282] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.917878][ T282] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.917881][ T282] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.917882][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.917887][ T282] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.917889][ T282] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.917892][ T282] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.917895][ T282] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.917898][ T282] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.917904][ T282] ? 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)) [ 11.917906][ T282] ? 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)) [ 11.917911][ T282] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.917915][ T282] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.917917][ T282] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.917922][ T282] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.917926][ T282] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.917929][ T282] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.917931][ T282] ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373) [ 11.917937][ T282] __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4)) [ 11.917939][ T282] ____sys_sendmsg (net/socket.c:2713) [ 11.917942][ T282] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.917944][ T282] ? sock_write_iter (net/socket.c:1269) [ 11.917946][ T282] ? move_addr_to_kernel (net/socket.c:258) [ 11.917953][ T282] ___sys_sendmsg (net/socket.c:2767) [ 11.917956][ T282] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.917972][ T282] __sys_sendmsg (net/socket.c:2799) [ 11.917974][ T282] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.917981][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.917984][ T282] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.917987][ T282] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.917990][ T282] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.917992][ T282] RIP: 0033:0x7f3940fcb54e [ 11.917994][ T282] 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 [ 11.917996][ T282] RSP: 002b:00007fff87ea8490 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.917999][ T282] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f3940fcb54e [ 11.918000][ T282] RDX: 0000000000000000 RSI: 00007fff87ea8540 RDI: 0000000000000005 [ 11.918001][ T282] RBP: 00007fff87ea84a0 R08: 0000000000000000 R09: 0000000000000000 [ 11.918002][ T282] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911ed6 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