====================================== | [ 9.862253][ T187] softirqs last disabled at (46842): netlink_release (./include/net/sock.h:2138 net/netlink/af_netlink.c:727) | [ 9.862255][ T187] Preemption disabled at: | [ 9.862256][ T187] 0x0 | [ 9.862267][ T187] Tainted: [W]=WARN [ 9.862268][ T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.862270][ T187] Call Trace: [ 9.862271][ T187] [ 9.862273][ T187] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.862279][ T187] __might_resched.cold (kernel/sched/core.c:9234) [ 9.862284][ T187] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.862288][ T187] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.862293][ T187] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 9.862295][ T187] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.862301][ T187] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 9.862303][ T187] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.862306][ T187] put_chars (drivers/char/virtio_console.c:1176) [ 9.862309][ T187] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.862310][ T187] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.862315][ T187] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.862320][ T187] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.862327][ T187] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.862329][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.862331][ T187] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.862335][ T187] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.862339][ T187] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.862341][ T187] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 9.862344][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.862346][ T187] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.862350][ T187] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.862354][ T187] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.862356][ T187] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.862361][ T187] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.862364][ T187] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.862366][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.862368][ T187] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.862371][ T187] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.862373][ T187] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.862376][ T187] vprintk_emit (kernel/printk/printk.c:2479) [ 9.862380][ T187] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.862383][ T187] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.862387][ T187] _printk (kernel/printk/printk.c:2504) [ 9.862391][ T187] ? snapshot_read.cold (user.c:?) [ 9.862393][ T187] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 9.862396][ T187] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.862399][ T187] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 9.862402][ T187] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 9.862406][ T187] ? exit_notify (kernel/exit.c:780) [ 9.862408][ T187] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.862411][ T187] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.862415][ T187] do_group_exit (kernel/exit.c:1151) [ 9.862417][ T187] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 9.862419][ T187] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 9.862421][ T187] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.862425][ T187] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.862428][ T187] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.862430][ T187] RIP: 0033:0x7f37d64c01b8 [ 9.862432][ T187] Code: Unable to access opcode bytes at 0x7f37d64c018e. Code starting with the faulting instruction =========================================== [ 9.862433][ T187] RSP: 002b:00007ffde878c518 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.862435][ T187] RAX: ffffffffffffffda RBX: 00007f37d65f0f88 RCX: 00007f37d64c01b8 [ 9.862437][ T187] RDX: 00007f37d620afc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.862438][ T187] RBP: 00007ffde878c570 R08: 0000000000000000 R09: 0000000000008010 [ 9.862438][ T187] R10: 00007ffde878c330 R11: 0000000000000246 R12: 0000000000000001 [ 9.862439][ T187] R13: 0000000000000000 R14: 00007f37d65ef680 R15: 00007f37d65f0fa0 | [ 11.527910][ T253] softirqs last disabled at (20585): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 11.527912][ T253] Preemption disabled at: | [ 11.527913][ T253] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.527923][ T253] Tainted: [W]=WARN [ 11.527924][ T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.527925][ T253] Call Trace: [ 11.527927][ T253] [ 11.527928][ T253] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.527935][ T253] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.527937][ T253] __might_resched.cold (kernel/sched/core.c:9234) [ 11.527942][ T253] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.527946][ 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) [ 11.527951][ 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)) [ 11.527953][ T253] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.527959][ 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) [ 11.527961][ T253] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.527964][ T253] put_chars (drivers/char/virtio_console.c:1176) [ 11.527967][ T253] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.527972][ T253] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.527975][ T253] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.527978][ T253] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.527980][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.527982][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.527985][ T253] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.527987][ T253] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.527990][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.527994][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.527998][ T253] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.528002][ T253] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.528003][ 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)) [ 11.528007][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.528009][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.528013][ T253] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.528017][ T253] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.528018][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.528024][ T253] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.528026][ T253] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.528028][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.528030][ T253] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 11.528034][ T253] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.528036][ T253] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.528039][ T253] vprintk_emit (kernel/printk/printk.c:2479) [ 11.528043][ T253] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.528045][ T253] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.528047][ T253] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 11.528051][ T253] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 11.528054][ T253] _printk (kernel/printk/printk.c:2504) [ 11.528058][ T253] ? snapshot_read.cold (user.c:?) [ 11.528062][ T253] ? br_multicast_flood (??:?) bridge [ 11.528074][ T253] ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.528076][ T253] ? rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.528077][ T253] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.528081][ T253] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 11.528091][ T253] br_init_port (net/bridge/br_stp_if.c:39) bridge [ 11.528100][ T253] new_nbp (net/bridge/br_if.c:449) bridge [ 11.528109][ T253] br_add_if (net/bridge/br_if.c:592) bridge [ 11.528116][ T253] ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751) [ 11.528120][ T253] ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94) [ 11.528123][ T253] ? __kernel_text_address (kernel/extable.c:79) [ 11.528126][ T253] do_set_master (net/core/rtnetlink.c:3071) [ 11.528131][ T253] do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1)) [ 11.528134][ T253] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 11.528137][ T253] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 11.528138][ T253] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 11.528141][ T253] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 11.528145][ T253] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 11.528147][ T253] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.528149][ T253] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 11.528152][ T253] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.528155][ T253] ? kasan_save_stack (mm/kasan/common.c:57) [ 11.528156][ T253] ? kasan_save_track (mm/kasan/common.c:78) [ 11.528159][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.528161][ T253] ? netlink_seq_next (net/netlink/af_netlink.c:2684) [ 11.528164][ T253] ? ___sys_sendmsg (net/socket.c:2757) [ 11.528169][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.528171][ T253] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.528173][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.528175][ T253] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.528177][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.528179][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.528181][ T253] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 11.528185][ 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) [ 11.528187][ T253] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 11.528189][ T253] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 11.528192][ T253] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 11.528194][ T253] ? nla_get_range_signed (lib/nlattr.c:270) [ 11.528199][ T253] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 11.528204][ T253] rtnl_newlink (net/core/rtnetlink.c:4215) [ 11.528209][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.528211][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.528215][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.528217][ T253] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.528219][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.528221][ T253] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 11.528224][ T253] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 11.528227][ T253] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 11.528229][ T253] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.528231][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.528235][ T253] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 11.528237][ T253] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 11.528240][ T253] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 11.528242][ T253] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 11.528245][ T253] ? netlink_ack (./include/linux/skbuff.h:2718) [ 11.528257][ 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)) [ 11.528259][ 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)) [ 11.528263][ T253] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 11.528267][ T253] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 11.528269][ T253] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.528273][ T253] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 11.528277][ T253] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 11.528281][ T253] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.528286][ T253] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 11.528288][ T253] ? copy_msghdr_from_user (net/socket.c:2650) [ 11.528291][ T253] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 11.528292][ T253] ? move_addr_to_kernel (net/socket.c:258) [ 11.528300][ T253] ___sys_sendmsg (net/socket.c:2767) [ 11.528302][ T253] ? copy_msghdr_from_user (net/socket.c:2619) [ 11.528318][ T253] __sys_sendmsg (net/socket.c:2799) [ 11.528321][ T253] ? __sys_sendmsg_sock (net/socket.c:2780) [ 11.528327][ T253] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.528330][ T253] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.528333][ T253] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.528336][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.528338][ T253] RIP: 0033:0x7f87139c654e [ 11.528342][ 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 [ 11.528344][ T253] RSP: 002b:00007fffd73b1210 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 11.528347][ T253] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f87139c654e [ 11.528348][ T253] RDX: 0000000000000000 RSI: 00007fffd73b12c0 RDI: 0000000000000005 [ 11.528349][ T253] RBP: 00007fffd73b1220 R08: 0000000000000000 R09: 0000000000000000 [ 11.528350][ T253] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9183bc [ 11.528351][ T253] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffd73b1980 | [ 26.283588][ T396] softirqs last disabled at (26838): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge | [ 26.283596][ T396] Preemption disabled at: | [ 26.283597][ T396] 0x0 | [ 26.283606][ T396] Tainted: [W]=WARN [ 26.283607][ T396] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 26.283609][ T396] Call Trace: [ 26.283610][ T396] [ 26.283612][ T396] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 26.283619][ T396] __might_resched.cold (kernel/sched/core.c:9234) [ 26.283624][ T396] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 26.283628][ T396] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 26.283633][ T396] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 26.283635][ T396] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 26.283641][ T396] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 26.283643][ T396] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 26.283646][ T396] put_chars (drivers/char/virtio_console.c:1176) [ 26.283649][ T396] ? __send_to_port (drivers/char/virtio_console.c:654) [ 26.283651][ T396] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 26.283655][ T396] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 26.283658][ T396] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 26.283661][ T396] ? mark_usage (kernel/locking/lockdep.c:4690) [ 26.283663][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.283665][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.283669][ T396] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 26.283671][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.283675][ T396] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 26.283679][ T396] console_emit_next_record (kernel/printk/printk.c:3183) [ 26.283683][ T396] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 26.283684][ T396] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 26.283687][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.283691][ T396] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 26.283695][ T396] console_flush_one_record (kernel/printk/printk.c:3268) [ 26.283699][ T396] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 26.283701][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.283706][ T396] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 26.283709][ T396] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 26.283711][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.283713][ T396] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 26.283716][ T396] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 26.283718][ T396] ? vprintk_emit (kernel/printk/printk.c:2478) [ 26.283721][ T396] vprintk_emit (kernel/printk/printk.c:2479) [ 26.283725][ T396] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 26.283727][ T396] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 26.283730][ T396] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 26.283732][ T396] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 26.283736][ T396] _printk (kernel/printk/printk.c:2504) [ 26.283740][ T396] ? snapshot_read.cold (user.c:?) [ 26.283748][ T396] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge [ 26.283759][ T396] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge [ 26.283768][ T396] br_device_event (net/bridge/br.c:111) bridge [ 26.283775][ T396] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 26.283779][ T396] ? _sub_I_65535_1+0x4d0/0x4d0 stp [ 26.283785][ T396] notifier_call_chain (kernel/notifier.c:85) [ 26.283791][ T396] __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855) [ 26.283795][ T396] ? netif_change_name (net/core/dev.c:1517) [ 26.283799][ T396] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 26.283802][ T396] ? __kernel_text_address (kernel/extable.c:79) [ 26.283804][ T396] ? write_profile (profile.c:?) [ 26.283807][ T396] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 26.283812][ T396] netif_change_flags (net/core/dev.c:9882) [ 26.283815][ T396] do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1)) [ 26.283819][ T396] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 26.283821][ T396] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 26.283823][ T396] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 26.283824][ T396] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 26.283828][ T396] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 26.283830][ T396] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 26.283832][ T396] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 26.283835][ T396] ? kasan_save_stack (mm/kasan/common.c:58) [ 26.283837][ T396] ? kasan_save_stack (mm/kasan/common.c:57) [ 26.283839][ T396] ? kasan_save_track (mm/kasan/common.c:78) [ 26.283842][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.283844][ T396] ? netlink_seq_next (net/netlink/af_netlink.c:2684) [ 26.283847][ T396] ? ___sys_sendmsg (net/socket.c:2757) [ 26.283851][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.283853][ T396] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 26.283856][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.283858][ T396] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 26.283860][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.283862][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.283864][ T396] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 26.283868][ T396] ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821) [ 26.283869][ T396] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 26.283872][ T396] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 26.283875][ T396] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 26.283880][ T396] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 26.283885][ T396] rtnl_newlink (net/core/rtnetlink.c:4215) [ 26.283890][ T396] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 26.283893][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.283897][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.283899][ T396] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 26.283901][ T396] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 26.283903][ T396] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 26.283907][ T396] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 26.283909][ T396] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 26.283912][ T396] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 26.283913][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.283917][ T396] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 26.283919][ T396] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 26.283922][ T396] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 26.283924][ T396] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 26.283927][ T396] ? netlink_ack (./include/linux/skbuff.h:2718) [ 26.283933][ T396] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2)) [ 26.283935][ T396] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2)) [ 26.283939][ T396] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 26.283942][ T396] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 26.283945][ T396] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 26.283949][ T396] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 26.283953][ T396] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 26.283956][ T396] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 26.283962][ T396] ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4)) [ 26.283964][ T396] ? copy_msghdr_from_user (net/socket.c:2650) [ 26.283966][ T396] ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399) [ 26.283968][ T396] ? move_addr_to_kernel (net/socket.c:258) [ 26.283975][ T396] ___sys_sendmsg (net/socket.c:2767) [ 26.283978][ T396] ? copy_msghdr_from_user (net/socket.c:2619) [ 26.283993][ T396] __sys_sendmsg (net/socket.c:2799) [ 26.283996][ T396] ? __sys_sendmsg_sock (net/socket.c:2780) [ 26.284002][ T396] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 26.284006][ T396] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 26.284008][ T396] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 26.284011][ T396] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 26.284014][ T396] RIP: 0033:0x7f73424c754e [ 26.284016][ T396] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 b4 bd 00 00 call 0xbdbc 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 26.284018][ T396] RSP: 002b:00007ffc7e541670 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 26.284021][ T396] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f73424c754e [ 26.284022][ T396] RDX: 0000000000000000 RSI: 00007ffc7e541720 RDI: 0000000000000005 [ 26.284023][ T396] RBP: 00007ffc7e541680 R08: 0000000000000000 R09: 0000000000000000 [ 26.284024][ T396] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9183ca Finger prints: br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print __irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars netlink_release:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print