====================================== | [ 22.010303][ T236] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 22.010558][ T236] | [ 22.010628][ T236] | [ 22.010628][ T236] stack backtrace: [ 22.011090][ T236] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 22.011398][ T236] Call Trace: [ 22.011509][ T236] [ 22.011581][ T236] dump_stack_lvl (lib/dump_stack.c:117) [ 22.011727][ T236] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 22.011867][ T236] ? 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) [ 22.012090][ T236] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 22.012263][ T236] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 22.012400][ T236] ? __bfs (kernel/locking/lockdep.c:1787) [ 22.012504][ T236] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 22.012643][ T236] check_irq_usage (kernel/locking/lockdep.c:2871) [ 22.012784][ T236] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 22.013003][ T236] ? __bfs (kernel/locking/lockdep.c:1787) [ 22.013193][ T236] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 22.013335][ T236] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 22.013477][ T236] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 22.013618][ T236] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 22.013761][ T236] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 22.013987][ T236] check_prev_add (kernel/locking/lockdep.c:3138) [ 22.014126][ T236] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 22.014282][ T236] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 22.014421][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.014611][ T236] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 22.014753][ T236] ? 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) [ 22.014890][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.014997][ T236] __lock_acquire (kernel/locking/lockdep.c:5137) [ 22.015138][ T236] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 22.015360][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.015499][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.015604][ T236] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 22.015745][ T236] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 22.015965][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.016193][ T236] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 22.016332][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.016470][ T236] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 22.016608][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.016745][ T236] __get_task_comm (fs/exec.c:1234) [ 22.016883][ T236] ref_tracker_alloc (lib/ref_tracker.c:217) [ 22.017022][ T236] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 22.017169][ T236] ? __lock_release (kernel/locking/lockdep.c:5430) [ 22.017308][ T236] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 22.017578][ T236] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 22.017716][ T236] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 22.017857][ T236] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 22.017995][ T236] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 22.018131][ T236] ? dev_close_many (net/core/dev.c:1571) [ 22.018355][ T236] ? unregister_netdevice_many_notify (net/core/dev.c:11146) [ 22.018525][ T236] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 22.018661][ T236] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 22.018798][ T236] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 22.019030][ T236] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 22.019169][ T236] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 22.019307][ T236] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 22.019444][ T236] ? __x64_sys_sendto (net/socket.c:2199) [ 22.019589][ T236] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 22.019814][ T236] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 22.019988][ T236] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 22.020129][ T236] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 22.020304][ T236] rt6_disable_ip (net/ipv6/route.c:4910) [ 22.020525][ T236] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 22.020748][ T236] ? 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) [ 22.020887][ T236] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 22.021028][ T236] ? __pfx_snprintf (lib/vsprintf.c:2954) [ 22.021169][ T236] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 22.021309][ T236] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 22.021485][ T236] addrconf_notify (net/ipv6/addrconf.c:3811) [ 22.021714][ T236] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 22.021853][ T236] dev_close_many (net/core/dev.c:1571) [ 22.021996][ T236] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 22.022136][ T236] ? __pfx_dev_close_many (net/core/dev.c:1558) [ 22.022276][ T236] ? __netdev_upper_dev_unlink (net/core/dev.c:7945 (discriminator 11)) [ 22.022535][ T236] unregister_netdevice_many_notify (net/core/dev.c:11146) [ 22.022718][ T236] ? unregister_netdevice_queue (net/core/dev.c:11098) [ 22.022892][ T236] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 22.023063][ T236] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 22.023319][ T236] ? netdev_upper_dev_unlink (net/core/dev.c:7984) [ 22.023458][ T236] ? __pfx_netdev_upper_dev_unlink (net/core/dev.c:7984) [ 22.023631][ T236] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 22.023852][ T236] ? 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) [ 22.024079][ T236] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 22.024227][ T236] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 22.024360][ T236] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 22.024501][ T236] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 22.024640][ T236] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 22.024774][ T236] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 22.024916][ T236] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 22.025058][ T236] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 22.025197][ T236] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 22.025336][ T236] ? 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) [ 22.025481][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.025675][ T236] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 22.025814][ T236] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 22.025957][ T236] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 22.026096][ T236] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 22.026227][ T236] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 22.026370][ T236] ? 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) [ 22.026513][ T236] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 22.026820][ T236] ? 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) [ 22.026957][ T236] ? 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) [ 22.027096][ T236] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 22.027236][ T236] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 22.027380][ T236] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 22.027611][ T236] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:835) [ 22.027746][ T236] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:858) [ 22.027891][ T236] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 22.028030][ T236] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 22.028168][ T236] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 22.028307][ T236] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 22.028534][ T236] ? __pfx___sys_sendto (net/socket.c:2161) [ 22.028674][ T236] ? __lock_release (kernel/locking/lockdep.c:5430) [ 22.028816][ T236] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 22.028955][ T236] ? fd_install (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:894 fs/file.c:626) [ 22.029100][ T236] ? fd_install (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:896 fs/file.c:626) [ 22.029329][ T236] ? __sys_socket (net/socket.c:497 net/socket.c:1715) [ 22.029467][ T236] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 22.029640][ T236] ? __pfx___sys_socket (net/socket.c:1702) [ 22.029778][ T236] __x64_sys_sendto (net/socket.c:2199) [ 22.029921][ T236] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 22.030178][ T236] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 22.030313][ T236] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 22.030483][ T236] RIP: 0033:0x7f215a3d0700 [ 22.030716][ T236] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 All code ======== 0: ff (bad) 1: ff 64 89 02 jmp *0x2(%rcx,%rcx,4) 5: eb bd jmp 0xffffffffffffffc4 7: 0f 1f 00 nopl (%rax) a: f3 0f 1e fa endbr64 e: 41 89 ca mov %ecx,%r10d 11: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 18: 00 19: 85 c0 test %eax,%eax 1b: 75 1d jne 0x3a 1d: 45 31 c9 xor %r9d,%r9d 20: 45 31 c0 xor %r8d,%r8d 23: b8 2c 00 00 00 mov $0x2c,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 68 ja 0x9a 32: c3 ret 33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3a: 41 54 push %r12 3c: 48 83 ec 20 sub $0x20,%rsp Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 68 ja 0x70 8: c3 ret 9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 10: 41 54 push %r12 12: 48 83 ec 20 sub $0x20,%rsp [ 22.031211][ T236] RSP: 002b:00007ffd903cab98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 22.031504][ T236] RAX: ffffffffffffffda RBX: 0000000000000030 RCX: 00007f215a3d0700 [ 22.031709][ T236] RDX: 0000000000000030 RSI: 00007ffd903caba0 RDI: 0000000000000005 [ 22.031911][ T236] RBP: 0000000000404780 R08: 0000000000000000 R09: 0000000000000000 [ 22.032201][ T236] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add