====================================== | [ 27.917526][ T244] bond0: (slave eth0): Enslaving as an active interface with an up link | [ 33.266013][ T248] bond0: (slave eth0): Releasing backup interface | [ 33.285573][ C1] BUG: spinlock bad magic on CPU#1, ip/248 | [ 33.285828][ C1] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: ip/248, .owner_cpu: 1 [ 33.286298][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 33.286628][ C1] Call Trace: [ 33.286745][ C1] [ 33.286849][ C1] dump_stack_lvl (lib/dump_stack.c:122) [ 33.286999][ C1] do_raw_spin_unlock (kernel/locking/spinlock_debug.c:100 kernel/locking/spinlock_debug.c:141) [ 33.287144][ C1] _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 33.287289][ C1] net_tx_action (./include/net/sch_generic.h:226 ./include/net/sch_generic.h:217 ./include/net/pkt_sched.h:128 ./include/net/pkt_sched.h:124 net/core/dev.c:5323) [ 33.287438][ C1] handle_softirqs (kernel/softirq.c:554) [ 33.287590][ C1] ? dev_deactivate_many (./include/linux/bottom_half.h:33 ./include/linux/netdevice.h:4448 net/sched/sch_generic.c:571 net/sched/sch_generic.c:1363) [ 33.287748][ C1] do_softirq (kernel/softirq.c:455 kernel/softirq.c:442) [ 33.287858][ C1] [ 33.287934][ C1] [ 33.288006][ C1] __local_bh_enable_ip (kernel/softirq.c:382) [ 33.288155][ C1] dev_deactivate_many (net/sched/sch_generic.c:1356) [ 33.288299][ C1] __dev_close_many (net/core/dev.c:1547) [ 33.288441][ C1] ? __pfx___dev_close_many (net/core/dev.c:1522) [ 33.288582][ C1] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 33.288748][ C1] dev_close_many (net/core/dev.c:1585) [ 33.288893][ C1] ? __pfx_netdev_change_features (net/core/dev.c:10133) [ 33.289080][ C1] ? __pfx_dev_close_many (net/core/dev.c:1575) [ 33.289224][ C1] ? ip6_route_dev_notify (net/ipv6/route.c:6286) [ 33.289367][ C1] ? bond_compute_features (drivers/net/bonding/bond_main.c:1429) [ 33.289512][ C1] dev_close (./include/linux/list.h:111 ./include/linux/list.h:215 ./include/linux/list.h:229 net/core/dev.c:1610 net/core/dev.c:1603) [ 33.289619][ C1] ? __pfx_dev_close (net/core/dev.c:1604) [ 33.289786][ C1] __bond_release_one (drivers/net/bonding/bond_main.c:2501) [ 33.289935][ C1] ? __pfx___bond_release_one (drivers/net/bonding/bond_main.c:2359) [ 33.290082][ C1] ? 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:227) [ 33.290223][ C1] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 33.290330][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5142) [ 33.290470][ C1] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 33.290613][ C1] do_set_master (net/core/rtnetlink.c:2687) [ 33.290756][ C1] do_setlink (net/core/rtnetlink.c:2907) [ 33.290897][ C1] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) [ 33.291040][ C1] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) [ 33.291182][ C1] ? is_bpf_text_address (./kernel/bpf/core.c:772) [ 33.291323][ C1] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 33.291463][ C1] ? __kernel_text_address (kernel/extable.c:79) [ 33.291604][ C1] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 33.291743][ C1] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 33.291920][ C1] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 33.292062][ C1] ? stack_trace_save (kernel/stacktrace.c:123) [ 33.292203][ C1] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 33.292344][ C1] ? __pfx_validate_nla (lib/nlattr.c:396) [ 33.292491][ C1] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 33.292596][ C1] ? kasan_save_stack (mm/kasan/common.c:49) [ 33.292776][ C1] ? __nla_validate_parse (lib/nlattr.c:638) [ 33.292995][ C1] __rtnl_newlink (net/core/rtnetlink.c:3696) [ 33.293230][ C1] ? 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:227) [ 33.293457][ C1] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) [ 33.293679][ C1] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 33.293947][ C1] ? __create_object (mm/kmemleak.c:751) [ 33.294145][ C1] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) [ 33.294322][ C1] rtnl_newlink (net/core/rtnetlink.c:3744) [ 33.294490][ C1] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) [ 33.294714][ C1] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 33.294927][ C1] ? 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:227) [ 33.295141][ C1] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 33.295305][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5142) [ 33.295504][ C1] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 33.295746][ C1] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 33.295972][ C1] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) [ 33.296197][ C1] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) [ 33.296424][ C1] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 33.296643][ C1] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [ 33.296866][ C1] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) [ 33.297095][ C1] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 33.297330][ C1] netlink_sendmsg (net/netlink/af_netlink.c:1901) [ 33.297560][ C1] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) [ 33.297791][ C1] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) [ 33.298012][ C1] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 33.298245][ C1] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) [ 33.298466][ C1] ? __pfx_____sys_sendmsg (net/socket.c:2543) [ 33.298688][ C1] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) [ 33.298960][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) [ 33.299192][ C1] ___sys_sendmsg (net/socket.c:2653) [ 33.299427][ C1] ? __pfx____sys_sendmsg (net/socket.c:2640) [ 33.299657][ C1] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 33.299884][ C1] ? __lock_release (kernel/locking/lockdep.c:5435) [ 33.300100][ C1] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) [ 33.300374][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) [ 33.300595][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 33.300822][ C1] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 33.301101][ C1] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 33.301334][ C1] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) [ 33.301560][ C1] ? __pfx___sys_sendmsg (net/socket.c:2668) [ 33.301774][ C1] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) [ 33.302035][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 33.302245][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 33.302529][ C1] RIP: 0033:0x7f0c3d3157b7 [ 33.302756][ C1] 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) [ 33.303555][ C1] RSP: 002b:00007ffcd0f61378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 33.303906][ C1] RAX: ffffffffffffffda RBX: 00007ffcd0f61aa0 RCX: 00007f0c3d3157b7 [ 33.304241][ C1] RDX: 0000000000000000 RSI: 00007ffcd0f613e0 RDI: 0000000000000005 [ 33.304580][ C1] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [ 33.304900][ C1] R10: 00007f0c3d1d3ef8 R11: 0000000000000246 R12: 0000000000000003 Finger prints: do_raw_spin_unlock:_raw_spin_unlock:net_tx_action:handle_softirqs:do_softirq