====================================== | [ 45.491781][ T517] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 45.491960][ T517] | [ 45.492030][ T517] | [ 45.492030][ T517] stack backtrace: [ 45.492403][ T517] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.492733][ T517] Call Trace: [ 45.492842][ T517] [ 45.492914][ T517] dump_stack_lvl (lib/dump_stack.c:117) [ 45.493060][ T517] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 45.493198][ T517] ? 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) [ 45.493338][ T517] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 45.493507][ T517] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 45.493642][ T517] ? __bfs (kernel/locking/lockdep.c:1787) [ 45.493745][ T517] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 45.493884][ T517] check_irq_usage (kernel/locking/lockdep.c:2871) [ 45.494023][ T517] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 45.494164][ T517] ? __bfs (kernel/locking/lockdep.c:1787) [ 45.494266][ T517] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 45.494403][ T517] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 45.494540][ T517] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 45.494678][ T517] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 45.494818][ T517] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 45.494958][ T517] check_prev_add (kernel/locking/lockdep.c:3138) [ 45.495180][ T517] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 45.495321][ T517] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 45.495460][ T517] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 45.495564][ T517] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 45.495701][ T517] ? 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) [ 45.495938][ T517] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 45.496044][ T517] __lock_acquire (kernel/locking/lockdep.c:5137) [ 45.496182][ T517] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 45.496318][ T517] ? __get_task_comm (fs/exec.c:1234) [ 45.496454][ T517] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 45.496561][ T517] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.496700][ T517] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 45.496836][ T517] ? __get_task_comm (fs/exec.c:1234) [ 45.496975][ T517] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 45.497112][ T517] ? __get_task_comm (fs/exec.c:1234) [ 45.497248][ T517] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 45.497383][ T517] ? __get_task_comm (fs/exec.c:1234) [ 45.497520][ T517] __get_task_comm (fs/exec.c:1234) [ 45.497738][ T517] ref_tracker_alloc (lib/ref_tracker.c:217) [ 45.497880][ T517] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 45.498016][ T517] ? __lock_release (kernel/locking/lockdep.c:5430) [ 45.498153][ T517] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 45.498403][ T517] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 45.498539][ T517] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 45.498674][ T517] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 45.498817][ T517] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 45.499035][ T517] ? dev_close_many (net/core/dev.c:1571) [ 45.499174][ T517] ? unregister_netdevice_many_notify (net/core/dev.c:11146) [ 45.499341][ T517] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 45.499484][ T517] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 45.499700][ T517] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 45.499844][ T517] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 45.499992][ T517] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 45.500141][ T517] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 45.500291][ T517] ? __x64_sys_sendto (net/socket.c:2199) [ 45.500527][ T517] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 45.500675][ T517] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 45.500863][ T517] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 45.501013][ T517] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 45.501285][ T517] rt6_disable_ip (net/ipv6/route.c:4910) [ 45.501433][ T517] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 45.501582][ T517] ? 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) [ 45.501731][ T517] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 45.501979][ T517] ? __pfx_snprintf (lib/vsprintf.c:2954) [ 45.502132][ T517] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 45.502281][ T517] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 45.502472][ T517] addrconf_notify (net/ipv6/addrconf.c:3811) [ 45.502614][ T517] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 45.502753][ T517] dev_close_many (net/core/dev.c:1571) [ 45.502892][ T517] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 45.503029][ T517] ? __pfx_dev_close_many (net/core/dev.c:1558) [ 45.503169][ T517] ? __netdev_upper_dev_unlink (net/core/dev.c:7945 (discriminator 11)) [ 45.503339][ T517] unregister_netdevice_many_notify (net/core/dev.c:11146) [ 45.503508][ T517] ? unregister_netdevice_queue (net/core/dev.c:11098) [ 45.503676][ T517] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 45.503847][ T517] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 45.504015][ T517] ? netdev_upper_dev_unlink (net/core/dev.c:7984) [ 45.504150][ T517] ? __pfx_netdev_upper_dev_unlink (net/core/dev.c:7984) [ 45.504406][ T517] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 45.504542][ T517] ? 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) [ 45.504678][ T517] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 45.504824][ T517] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 45.505043][ T517] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 45.505177][ T517] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 45.505312][ T517] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 45.505447][ T517] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 45.505668][ T517] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.505807][ T517] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 45.505942][ T517] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 45.506078][ T517] ? 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) [ 45.506215][ T517] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 45.506400][ T517] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 45.506537][ T517] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 45.506673][ T517] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 45.506815][ T517] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 45.507040][ T517] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 45.507183][ T517] ? 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) [ 45.507321][ T517] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 45.507456][ T517] ? 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) [ 45.507756][ T517] ? 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) [ 45.507892][ T517] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 45.508028][ T517] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 45.508170][ T517] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 45.508307][ T517] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:835) [ 45.508443][ T517] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:858) [ 45.508580][ T517] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 45.508717][ T517] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 45.508855][ T517] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 45.508995][ T517] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 45.509133][ T517] ? __pfx___sys_sendto (net/socket.c:2161) [ 45.509273][ T517] ? __lock_release (kernel/locking/lockdep.c:5430) [ 45.509409][ T517] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 45.509549][ T517] ? fd_install (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:894 fs/file.c:626) [ 45.509685][ T517] ? fd_install (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:896 fs/file.c:626) [ 45.509821][ T517] ? __sys_socket (net/socket.c:497 net/socket.c:1715) [ 45.509956][ T517] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.510207][ T517] ? __pfx___sys_socket (net/socket.c:1702) [ 45.510345][ T517] __x64_sys_sendto (net/socket.c:2199) [ 45.510485][ T517] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.510654][ T517] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 45.510894][ T517] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 45.511064][ T517] RIP: 0033:0x7fb9e575a700 [ 45.511209][ T517] 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 [ 45.511698][ T517] RSP: 002b:00007ffe415dfe18 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 45.511910][ T517] RAX: ffffffffffffffda RBX: 0000000000000030 RCX: 00007fb9e575a700 [ 45.512115][ T517] RDX: 0000000000000030 RSI: 00007ffe415dfe20 RDI: 0000000000000005 [ 45.512319][ T517] RBP: 0000000000404780 R08: 0000000000000000 R09: 0000000000000000 [ 45.512527][ T517] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add