====================================== | [ 179.967007][ T3691] #2: ffffffff9f56f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:901 net/core/dev.c:4555) | [ 179.967364][ T3691] #3: ffff88800503cb18 (_xmit_ETHER#2){+...}-{3:3}, at: __dev_queue_xmit (./include/linux/netdevice.h:4633 net/core/dev.c:4626) | [ 179.967943][ T3691] | [ 179.967943][ T3691] stack backtrace: [ 179.968209][ T3691] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 179.968212][ T3691] Call Trace: [ 179.968213][ T3691] [ 179.968216][ T3691] dump_stack_lvl (lib/dump_stack.c:123) [ 179.968225][ T3691] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) [ 179.968237][ T3691] dev_hard_start_xmit (./include/net/net_namespace.h:418 ./include/linux/netdevice.h:2695 net/core/dev.c:2466 net/core/dev.c:3772 net/core/dev.c:3793) [ 179.968250][ T3691] __dev_queue_xmit (net/core/dev.h:340 net/core/dev.c:4631) [ 179.968255][ T3691] ? kmem_cache_alloc_node_noprof (mm/slub.c:4221) [ 179.968260][ T3691] ? __create_object (mm/kmemleak.c:766) [ 179.968278][ T3691] ? __pfx___dev_queue_xmit (net/core/dev.c:4538) [ 179.968284][ T3691] ? __alloc_skb (net/core/skbuff.c:685) [ 179.968291][ T3691] ? __pfx___alloc_skb (net/core/skbuff.c:642) [ 179.968294][ T3691] ? bond_3ad_unbind_slave (drivers/net/bonding/bond_3ad.c:2241) bonding [ 179.968324][ T3691] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) [ 179.968336][ T3691] ? __netdev_alloc_skb (net/core/skbuff.c:733) [ 179.968344][ T3691] ad_lacpdu_send (drivers/net/bonding/bond_3ad.c:929) bonding [ 179.968369][ T3691] bond_3ad_unbind_slave (drivers/net/bonding/bond_3ad.c:2262) bonding [ 179.968400][ T3691] ? __pfx_bond_3ad_unbind_slave (drivers/net/bonding/bond_3ad.c:2230) bonding [ 179.968421][ T3691] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:486) [ 179.968440][ T3691] __bond_release_one (drivers/net/bonding/bond_main.c:2537) bonding [ 179.968468][ T3691] ? find_held_lock (kernel/locking/lockdep.c:5341) [ 179.968474][ T3691] ? __pfx___bond_release_one (drivers/net/bonding/bond_main.c:2489) bonding [ 179.968494][ T3691] ? __lock_release (kernel/locking/lockdep.c:5527) [ 179.968496][ T3691] ? net_generic (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48) vxlan [ 179.968510][ T3691] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) [ 179.968513][ T3691] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) [ 179.968528][ T3691] ? bond_netpoll_cleanup (drivers/net/bonding/bond_main.c:1475 (discriminator 2)) bonding [ 179.968551][ T3691] ? __pfx_bond_netpoll_cleanup (drivers/net/bonding/bond_main.c:1470) bonding [ 179.968570][ T3691] ? vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4764) vxlan [ 179.968583][ T3691] ? __pfx_vlan_device_event (net/8021q/vlan.c:363) [ 179.968595][ T3691] bond_uninit (drivers/net/bonding/bond_main.c:6070 (discriminator 3)) bonding [ 179.968617][ T3691] ? __pfx_bond_uninit (drivers/net/bonding/bond_main.c:6062) bonding [ 179.968640][ T3691] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 179.968652][ T3691] unregister_netdevice_many_notify (net/core/dev.c:11989) [ 179.968669][ T3691] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11903) [ 179.968672][ T3691] ? rtnl_dellink (net/core/rtnetlink.c:3557) [ 179.968675][ T3691] ? sock_def_readable (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/sock.c:3531) [ 179.968681][ T3691] ? __pfx___mutex_lock (kernel/locking/mutex.c:729) [ 179.968691][ T3691] ? rtnl_is_locked (net/core/rtnetlink.c:169) [ 179.968694][ T3691] ? unregister_netdevice_queue (net/core/dev.c:11875) [ 179.968701][ T3691] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11874) [ 179.968705][ T3691] ? __nla_validate_parse (./include/net/netlink.h:1271 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) [ 179.968720][ T3691] rtnl_dellink (net/core/rtnetlink.c:3523 net/core/rtnetlink.c:3563) [ 179.968729][ T3691] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3529) [ 179.968803][ T3691] ? find_held_lock (kernel/locking/lockdep.c:5341) [ 179.968811][ T3691] ? __lock_release (kernel/locking/lockdep.c:5527) [ 179.968813][ T3691] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) [ 179.968818][ T3691] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) [ 179.968821][ T3691] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) [ 179.968834][ T3691] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) [ 179.968839][ T3691] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3529) [ 179.968844][ T3691] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) [ 179.968852][ T3691] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) [ 179.968857][ T3691] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) [ 179.968860][ T3691] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) [ 179.968873][ T3691] ? __lock_acquire (kernel/locking/lockdep.c:5228) [ 179.968881][ T3691] netlink_rcv_skb (net/netlink/af_netlink.c:2534) [ 179.968885][ T3691] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) [ 179.968893][ T3691] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) [ 179.968918][ T3691] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [ 179.968924][ T3691] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 179.968933][ T3691] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) [ 179.968942][ T3691] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) [ 179.968947][ T3691] ? find_held_lock (kernel/locking/lockdep.c:5341) [ 179.968959][ T3691] netlink_sendmsg (net/netlink/af_netlink.c:1883) [ 179.968969][ T3691] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) [ 179.968988][ T3691] ____sys_sendmsg (net/socket.c:709 net/socket.c:724 net/socket.c:2563) [ 179.968996][ T3691] ? __pfx_____sys_sendmsg (net/socket.c:2509) [ 179.968999][ T3691] ? __pfx_copy_msghdr_from_user (net/socket.c:2489) [ 179.969020][ T3691] ___sys_sendmsg (net/socket.c:2619) [ 179.969029][ T3691] ? __pfx____sys_sendmsg (net/socket.c:2606) [ 179.969039][ T3691] ? kasan_save_stack (mm/kasan/common.c:49) [ 179.969042][ T3691] ? kasan_save_stack (mm/kasan/common.c:48) [ 179.969045][ T3691] ? kasan_record_aux_stack (mm/kasan/generic.c:548) [ 179.969048][ T3691] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3067) [ 179.969051][ T3691] ? __x64_sys_close (fs/open.c:1583 fs/open.c:1565 fs/open.c:1565) [ 179.969054][ T3691] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 179.969059][ T3691] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 179.969064][ T3691] ? __lock_acquire (kernel/locking/lockdep.c:5228) [ 179.969068][ T3691] ? lock_downgrade (kernel/locking/lockdep.c:116 kernel/locking/lockdep.c:5747) [ 179.969076][ T3691] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 179.969082][ T3691] ? find_held_lock (kernel/locking/lockdep.c:5341) [ 179.969090][ T3691] ? __lock_release (kernel/locking/lockdep.c:5527) [ 179.969092][ T3691] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2077 arch/x86/mm/physaddr.c:65) [ 179.969098][ T3691] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) [ 179.969101][ T3691] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) [ 179.969111][ T3691] __sys_sendmsg (net/socket.c:2649) [ 179.969116][ T3691] ? __pfx___sys_sendmsg (net/socket.c:2634) [ 179.969146][ T3691] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 179.969153][ T3691] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 179.969156][ T3691] RIP: 0033:0x7f4c5b9839a7 [ 179.969160][ T3691] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0a 00 or (%rax),%al 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 179.969163][ T3691] RSP: 002b:00007ffd59512228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 179.969166][ T3691] RAX: ffffffffffffffda RBX: 00007ffd59512950 RCX: 00007f4c5b9839a7 [ 179.969169][ T3691] RDX: 0000000000000000 RSI: 00007ffd59512290 RDI: 0000000000000005 [ 179.969171][ T3691] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 179.969172][ T3691] R10: 00007f4c5b841ef8 R11: 0000000000000246 R12: 0000000000000002 Finger prints: lockdep_rcu_suspicious:dev_hard_start_xmit:__dev_queue_xmit:ad_lacpdu_send:bond_3ad_unbind_slave