====================================== | [ 1907.006627][ T6159] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 1907.006798][ T6159] | [ 1907.006872][ T6159] | [ 1907.006872][ T6159] stack backtrace: [ 1907.007344][ T6159] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1907.007647][ T6159] Call Trace: [ 1907.007752][ T6159] [ 1907.007824][ T6159] dump_stack_lvl (lib/dump_stack.c:117) [ 1907.007968][ T6159] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 1907.008109][ T6159] ? 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:228) [ 1907.008250][ T6159] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 1907.008420][ T6159] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 1907.008554][ T6159] ? __bfs (kernel/locking/lockdep.c:1787) [ 1907.008657][ T6159] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 1907.008878][ T6159] check_irq_usage (kernel/locking/lockdep.c:2871) [ 1907.009018][ T6159] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 1907.009153][ T6159] ? __bfs (kernel/locking/lockdep.c:1787) [ 1907.009255][ T6159] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 1907.009398][ T6159] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 1907.009617][ T6159] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 1907.009754][ T6159] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 1907.009895][ T6159] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 1907.010030][ T6159] check_prev_add (kernel/locking/lockdep.c:3138) [ 1907.010248][ T6159] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 1907.010390][ T6159] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 1907.010529][ T6159] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1907.010640][ T6159] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1907.010776][ T6159] ? 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:228) [ 1907.010992][ T6159] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1907.011101][ T6159] __lock_acquire (kernel/locking/lockdep.c:5137) [ 1907.011246][ T6159] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1907.011381][ T6159] ? __get_task_comm (fs/exec.c:1234) [ 1907.011599][ T6159] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1907.011702][ T6159] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1907.011838][ T6159] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1907.011980][ T6159] ? __get_task_comm (fs/exec.c:1234) [ 1907.012116][ T6159] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1907.012342][ T6159] ? __get_task_comm (fs/exec.c:1234) [ 1907.012483][ T6159] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 1907.012620][ T6159] ? __get_task_comm (fs/exec.c:1234) [ 1907.012757][ T6159] __get_task_comm (fs/exec.c:1234) [ 1907.012975][ T6159] ref_tracker_alloc (lib/ref_tracker.c:217) [ 1907.013114][ T6159] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1907.013271][ T6159] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 1907.013411][ T6159] ? rt_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv4/route.c:1555) [ 1907.013633][ T6159] ? fib_netdev_event (net/ipv4/fib_frontend.c:1520) [ 1907.013773][ T6159] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 1907.013912][ T6159] ? unregister_netdevice_many_notify (net/core/dev.c:11171) [ 1907.014082][ T6159] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 1907.014309][ T6159] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 1907.014449][ T6159] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 1907.014593][ T6159] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 1907.014732][ T6159] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 1907.014953][ T6159] ? ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 1907.015093][ T6159] ? ___sys_sendmsg (net/socket.c:2640) [ 1907.015234][ T6159] ? __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 1907.015371][ T6159] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1907.015508][ T6159] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1907.015677][ T6159] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 1907.015812][ T6159] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1907.015954][ T6159] ? rt_flush_dev (net/ipv4/route.c:1551) [ 1907.016093][ T6159] rt_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv4/route.c:1555) [ 1907.016230][ T6159] ? __timer_delete_sync (kernel/time/timer.c:1648 (discriminator 1)) [ 1907.016367][ T6159] ? __timer_delete_sync (kernel/time/timer.c:1668 (discriminator 34)) [ 1907.016503][ T6159] fib_netdev_event (net/ipv4/fib_frontend.c:1520) [ 1907.016639][ T6159] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 1907.016938][ T6159] unregister_netdevice_many_notify (net/core/dev.c:11171) [ 1907.017106][ T6159] ? vrf_dellink (drivers/net/vrf.c:1717) [ 1907.017254][ T6159] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 1907.017424][ T6159] ? vrf_dellink (drivers/net/vrf.c:1708) [ 1907.017641][ T6159] ? __pfx_vrf_dellink (drivers/net/vrf.c:1708) [ 1907.017780][ T6159] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 1907.017916][ T6159] ? 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:228) [ 1907.018050][ T6159] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 1907.018278][ T6159] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 1907.018415][ T6159] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 1907.018556][ T6159] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1907.018692][ T6159] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6592) [ 1907.018915][ T6159] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 1907.019065][ T6159] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1907.019215][ T6159] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1907.019369][ T6159] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 1907.019601][ T6159] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 1907.019752][ T6159] ? 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:228) [ 1907.019907][ T6159] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1907.020022][ T6159] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 1907.020173][ T6159] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 1907.020406][ T6159] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 1907.020559][ T6159] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 1907.020710][ T6159] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1907.020862][ T6159] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 1907.021097][ T6159] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1907.021264][ T6159] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 1907.021416][ T6159] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 1907.021566][ T6159] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 1907.021800][ T6159] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 1907.021953][ T6159] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 1907.022104][ T6159] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1907.022264][ T6159] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 1907.022404][ T6159] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 1907.022629][ T6159] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 1907.022771][ T6159] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 1907.022910][ T6159] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 1907.023050][ T6159] ? __pfx_____sys_sendmsg (net/socket.c:2530) [ 1907.023272][ T6159] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [ 1907.023447][ T6159] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1907.023592][ T6159] ___sys_sendmsg (net/socket.c:2640) [ 1907.023732][ T6159] ? __pfx____sys_sendmsg (net/socket.c:2627) [ 1907.023957][ T6159] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1907.024095][ T6159] ? __lock_release (kernel/locking/lockdep.c:5430) [ 1907.024232][ T6159] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 1907.024403][ T6159] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1907.024627][ T6159] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 1907.024769][ T6159] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 1907.024940][ T6159] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 1907.025086][ T6159] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 1907.025312][ T6159] ? __pfx___sys_sendmsg (net/socket.c:2655) [ 1907.025457][ T6159] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1907.025595][ T6159] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1907.025763][ T6159] RIP: 0033:0x7f4494c977b7 [ 1907.026000][ T6159] 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) [ 1907.026496][ T6159] RSP: 002b:00007ffec4e8dd48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1907.026798][ T6159] RAX: ffffffffffffffda RBX: 00007ffec4e8e470 RCX: 00007f4494c977b7 [ 1907.027007][ T6159] RDX: 0000000000000000 RSI: 00007ffec4e8ddb0 RDI: 0000000000000005 [ 1907.027298][ T6159] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 1907.027505][ T6159] R10: 00007f4494b55ef8 R11: 0000000000000246 R12: 0000000000000001 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add