====================================== | [ 9.792938][ T186] softirqs last disabled at (24317): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.792940][ T186] Preemption disabled at: | [ 9.792941][ T186] 0x0 | [ 9.792951][ T186] Tainted: [W]=WARN [ 9.792951][ T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.792953][ T186] Call Trace: [ 9.792955][ T186] [ 9.792956][ T186] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.792962][ T186] __might_resched.cold (kernel/sched/core.c:9234) [ 9.792967][ T186] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.792971][ T186] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.792976][ T186] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 9.792978][ T186] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.792984][ T186] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 9.792986][ T186] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.792990][ T186] put_chars (drivers/char/virtio_console.c:1176) [ 9.792992][ T186] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.792994][ T186] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.792998][ T186] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.793003][ T186] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.793009][ T186] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.793011][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.793014][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.793018][ T186] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.793021][ T186] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.793023][ T186] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 9.793026][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.793029][ T186] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.793033][ T186] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.793037][ T186] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.793038][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.793043][ T186] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.793046][ T186] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.793048][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.793050][ T186] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.793054][ T186] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.793056][ T186] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.793059][ T186] vprintk_emit (kernel/printk/printk.c:2479) [ 9.793062][ T186] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.793066][ T186] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.793069][ T186] _printk (kernel/printk/printk.c:2504) [ 9.793073][ T186] ? snapshot_read.cold (user.c:?) [ 9.793076][ T186] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 9.793078][ T186] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.793082][ T186] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 9.793085][ T186] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.793088][ T186] ? exit_notify (kernel/exit.c:780) [ 9.793090][ T186] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.793093][ T186] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.793097][ T186] do_group_exit (kernel/exit.c:1151) [ 9.793100][ T186] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.793101][ T186] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.793103][ T186] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.793107][ T186] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.793110][ T186] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.793112][ T186] RIP: 0033:0x7f0ced13a1b8 [ 9.793114][ T186] Code: Unable to access opcode bytes at 0x7f0ced13a18e. Code starting with the faulting instruction =========================================== [ 9.793115][ T186] RSP: 002b:00007ffe5a8d0e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.793117][ T186] RAX: ffffffffffffffda RBX: 00007f0ced26af88 RCX: 00007f0ced13a1b8 [ 9.793119][ T186] RDX: 00007f0cece84fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.793120][ T186] RBP: 00007ffe5a8d0ed0 R08: 0000000000000000 R09: 0000000000008010 [ 9.793121][ T186] R10: 00007ffe5a8d0c90 R11: 0000000000000246 R12: 0000000000000001 [ 9.793121][ T186] R13: 0000000000000000 R14: 00007f0ced269680 R15: 00007f0ced26afa0 | [ 11.404659][ T253] softirqs last disabled at (13792): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2)) | [ 11.404662][ T253] Preemption disabled at: | [ 11.404663][ T253] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.404672][ T253] Tainted: [W]=WARN [ 11.404673][ T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.404675][ T253] Call Trace: [ 11.404676][ T253] [ 11.404678][ T253] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.404684][ T253] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.404687][ T253] __might_resched.cold (kernel/sched/core.c:9234) [ 11.404692][ T253] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.404696][ T253] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.404701][ T253] __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)) [ 11.404703][ T253] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.404709][ T253] ? 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) [ 11.404712][ T253] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.404715][ T253] put_chars (drivers/char/virtio_console.c:1176) [ 11.404718][ T253] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.404722][ T253] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.404726][ T253] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.404728][ T253] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.404730][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.404732][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.404736][ T253] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.404738][ T253] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.404741][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.404746][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.404750][ T253] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.404753][ T253] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.404755][ T253] ? 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)) [ 11.404758][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.404761][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.404765][ T253] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.404769][ T253] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.404771][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.404776][ T253] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.404779][ T253] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.404781][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.404783][ T253] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 11.404787][ T253] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.404788][ T253] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.404792][ T253] vprintk_emit (kernel/printk/printk.c:2479) [ 11.404796][ T253] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.404798][ T253] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.404800][ T253] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.404804][ T253] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.404808][ T253] _printk (kernel/printk/printk.c:2504) [ 11.404811][ T253] ? snapshot_read.cold (user.c:?) [ 11.404815][ T253] ? br_multicast_flood (??:?) bridge [ 11.404828][ T253] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.404829][ T253] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.404830][ T253] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.404835][ T253] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 11.404845][ T253] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 11.404853][ T253] new_nbp (net/bridge/br_if.c:449) bridge [ 11.404862][ T253] br_add_if (net/bridge/br_if.c:592) bridge [ 11.404870][ T253] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 11.404874][ T253] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.404877][ T253] ? __kernel_text_address (kernel/extable.c:79) [ 11.404880][ T253] do_set_master (net/core/rtnetlink.c:3071) [ 11.404885][ T253] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.404888][ T253] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.404892][ T253] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.404893][ T253] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.404895][ T253] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.404899][ T253] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.404901][ T253] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.404903][ T253] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.404906][ T253] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.404909][ T253] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.404910][ T253] ? kasan_save_track (mm/kasan/common.c:78) [ 11.404913][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.404915][ T253] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 11.404918][ T253] ? ___sys_sendmsg (net/socket.c:2757) [ 11.404923][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.404924][ T253] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.404927][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.404929][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.404931][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.404933][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.404935][ T253] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.404939][ T253] ? __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) [ 11.404940][ T253] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.404943][ T253] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.404946][ T253] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.404948][ T253] ? nla_get_range_signed (lib/nlattr.c:270) [ 11.404953][ T253] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.404958][ T253] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.404963][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.404965][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.404970][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.404972][ T253] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.404974][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.404975][ T253] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.404979][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.404981][ T253] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.404984][ T253] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.404986][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.404990][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.404992][ T253] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.404995][ T253] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.404997][ T253] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.405000][ T253] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.405006][ T253] ? 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)) [ 11.405008][ T253] ? 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)) [ 11.405012][ T253] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.405016][ T253] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.405019][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.405023][ T253] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.405027][ T253] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.405030][ T253] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.405036][ T253] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 11.405038][ T253] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.405040][ T253] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 11.405042][ T253] ? move_addr_to_kernel (net/socket.c:258) [ 11.405049][ T253] ___sys_sendmsg (net/socket.c:2767) [ 11.405052][ T253] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.405068][ T253] __sys_sendmsg (net/socket.c:2799) [ 11.405071][ T253] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.405077][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.405081][ T253] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.405083][ T253] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.405086][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.405089][ T253] RIP: 0033:0x7f4eaa75b54e [ 11.405092][ T253] 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 [ 11.405094][ T253] RSP: 002b:00007ffe82b99350 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.405097][ T253] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f4eaa75b54e [ 11.405098][ T253] RDX: 0000000000000000 RSI: 00007ffe82b99400 RDI: 0000000000000005 [ 11.405099][ T253] RBP: 00007ffe82b99360 R08: 0000000000000000 R09: 0000000000000000 [ 11.405100][ T253] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a913995 [ 11.405101][ T253] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe82b99ac0 | [ 22.585105][ T359] softirqs last disabled at (20076): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 22.585113][ T359] Preemption disabled at: | [ 22.585113][ T359] 0x0 | [ 22.585123][ T359] Tainted: [W]=WARN [ 22.585124][ T359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.585126][ T359] Call Trace: [ 22.585127][ T359] [ 22.585129][ T359] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 22.585135][ T359] __might_resched.cold (kernel/sched/core.c:9234) [ 22.585140][ T359] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 22.585144][ T359] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 22.585149][ T359] __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)) [ 22.585152][ T359] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 22.585157][ T359] ? 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) [ 22.585160][ T359] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 22.585163][ T359] put_chars (drivers/char/virtio_console.c:1176) [ 22.585166][ T359] ? __send_to_port (drivers/char/virtio_console.c:654) [ 22.585167][ T359] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 22.585171][ T359] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 22.585175][ T359] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 22.585177][ T359] ? mark_usage (kernel/locking/lockdep.c:4690) [ 22.585179][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.585181][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.585185][ T359] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 22.585186][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.585190][ T359] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.585194][ T359] console_emit_next_record (kernel/printk/printk.c:3183) [ 22.585198][ T359] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 22.585200][ T359] ? 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)) [ 22.585203][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.585207][ T359] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.585211][ T359] console_flush_one_record (kernel/printk/printk.c:3268) [ 22.585215][ T359] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 22.585217][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.585222][ T359] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 22.585225][ T359] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 22.585226][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.585229][ T359] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 22.585232][ T359] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 22.585234][ T359] ? vprintk_emit (kernel/printk/printk.c:2478) [ 22.585237][ T359] vprintk_emit (kernel/printk/printk.c:2479) [ 22.585241][ T359] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 22.585243][ T359] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 22.585246][ T359] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 22.585248][ T359] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 22.585252][ T359] _printk (kernel/printk/printk.c:2504) [ 22.585256][ T359] ? snapshot_read.cold (user.c:?) [ 22.585264][ T359] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 22.585281][ T359] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 22.585291][ T359] br_device_event (net/bridge/br.c:111) bridge [ 22.585298][ T359] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 22.585302][ T359] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 22.585308][ T359] notifier_call_chain (kernel/notifier.c:85) [ 22.585314][ T359] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 22.585319][ T359] ? netif_change_name (net/core/dev.c:1517) [ 22.585325][ T359] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 22.585328][ T359] ? __kernel_text_address (kernel/extable.c:79) [ 22.585330][ T359] ? write_profile (profile.c:?) [ 22.585333][ T359] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 22.585338][ T359] netif_change_flags (net/core/dev.c:9882) [ 22.585342][ T359] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 22.585346][ T359] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 22.585348][ T359] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 22.585349][ T359] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 22.585351][ T359] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 22.585354][ T359] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 22.585357][ T359] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 22.585358][ T359] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 22.585361][ T359] ? kasan_save_stack (mm/kasan/common.c:58) [ 22.585364][ T359] ? kasan_save_stack (mm/kasan/common.c:57) [ 22.585366][ T359] ? kasan_save_track (mm/kasan/common.c:78) [ 22.585369][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.585370][ T359] ? netlink_seq_next (net/netlink/af_netlink.c:2685) [ 22.585373][ T359] ? ___sys_sendmsg (net/socket.c:2757) [ 22.585378][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.585380][ T359] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 22.585382][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.585385][ T359] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 22.585386][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.585388][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.585390][ T359] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 22.585394][ T359] ? __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) [ 22.585396][ T359] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 22.585398][ T359] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 22.585401][ T359] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 22.585407][ T359] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 22.585412][ T359] rtnl_newlink (net/core/rtnetlink.c:4215) [ 22.585417][ T359] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.585419][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.585424][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.585425][ T359] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 22.585428][ T359] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.585429][ T359] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 22.585433][ T359] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 22.585435][ T359] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 22.585438][ T359] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 22.585440][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.585444][ T359] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 22.585446][ T359] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 22.585449][ T359] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 22.585451][ T359] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 22.585454][ T359] ? netlink_ack (./include/linux/skbuff.h:2718) [ 22.585460][ T359] ? 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)) [ 22.585462][ T359] ? 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)) [ 22.585466][ T359] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 22.585470][ T359] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 22.585472][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 22.585476][ T359] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 22.585480][ T359] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 22.585484][ T359] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 22.585489][ T359] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 22.585492][ T359] ? copy_msghdr_from_user (net/socket.c:2650) [ 22.585494][ T359] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 22.585496][ T359] ? move_addr_to_kernel (net/socket.c:258) [ 22.585503][ T359] ___sys_sendmsg (net/socket.c:2767) [ 22.585506][ T359] ? copy_msghdr_from_user (net/socket.c:2619) [ 22.585522][ T359] __sys_sendmsg (net/socket.c:2799) [ 22.585524][ T359] ? __sys_sendmsg_sock (net/socket.c:2780) [ 22.585531][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 22.585534][ T359] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 22.585537][ T359] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 22.585540][ T359] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 22.585542][ T359] RIP: 0033:0x7f35e7a1f54e [ 22.585544][ T359] 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 [ 22.585546][ T359] RSP: 002b:00007ffe84498ea0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 22.585549][ T359] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f35e7a1f54e [ 22.585550][ T359] RDX: 0000000000000000 RSI: 00007ffe84498f50 RDI: 0000000000000005 [ 22.585551][ T359] RBP: 00007ffe84498eb0 R08: 0000000000000000 R09: 0000000000000000 [ 22.585552][ T359] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9139a0 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