====================================== | [ 49.641591][ T555] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 49.641767][ T555] | [ 49.641840][ T555] | [ 49.641840][ T555] stack backtrace: [ 49.642226][ T555] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 49.642626][ T555] Call Trace: [ 49.642739][ T555] [ 49.642898][ T555] dump_stack_lvl (lib/dump_stack.c:117) [ 49.643044][ T555] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 49.643183][ T555] ? 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) [ 49.643326][ T555] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 49.643586][ T555] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 49.643725][ T555] ? __bfs (kernel/locking/lockdep.c:1787) [ 49.643831][ T555] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 49.643970][ T555] check_irq_usage (kernel/locking/lockdep.c:2871) [ 49.644117][ T555] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 49.644259][ T555] ? __bfs (kernel/locking/lockdep.c:1787) [ 49.644458][ T555] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 49.644598][ T555] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 49.644741][ T555] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 49.644884][ T555] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 49.645026][ T555] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 49.645247][ T555] check_prev_add (kernel/locking/lockdep.c:3138) [ 49.645390][ T555] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 49.645626][ T555] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 49.645768][ T555] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 49.645883][ T555] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 49.646024][ T555] ? 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) [ 49.646168][ T555] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 49.646362][ T555] __lock_acquire (kernel/locking/lockdep.c:5137) [ 49.646504][ T555] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 49.646644][ T555] ? __get_task_comm (fs/exec.c:1234) [ 49.646786][ T555] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 49.646980][ T555] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 49.647118][ T555] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 49.647264][ T555] ? __get_task_comm (fs/exec.c:1234) [ 49.647405][ T555] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 49.647631][ T555] ? __get_task_comm (fs/exec.c:1234) [ 49.647771][ T555] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 49.648007][ T555] ? __get_task_comm (fs/exec.c:1234) [ 49.648144][ T555] __get_task_comm (fs/exec.c:1234) [ 49.648282][ T555] ref_tracker_alloc (lib/ref_tracker.c:217) [ 49.648504][ T555] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 49.648644][ T555] ? __lock_release (kernel/locking/lockdep.c:5430) [ 49.648781][ T555] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 49.648953][ T555] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 49.649175][ T555] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 49.649314][ T555] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 49.649450][ T555] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 49.649590][ T555] ? dev_close_many (net/core/dev.c:1571) [ 49.649808][ T555] ? unregister_netdevice_many_notify (net/core/dev.c:11146) [ 49.649979][ T555] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 49.650114][ T555] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 49.650250][ T555] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 49.650467][ T555] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 49.650604][ T555] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 49.650741][ T555] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 49.650876][ T555] ? __x64_sys_sendto (net/socket.c:2199) [ 49.651013][ T555] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 49.651234][ T555] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 49.651408][ T555] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 49.651549][ T555] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 49.651884][ T555] rt6_disable_ip (net/ipv6/route.c:4910) [ 49.652023][ T555] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 49.652161][ T555] ? 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) [ 49.652301][ T555] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 49.652439][ T555] ? __pfx_snprintf (lib/vsprintf.c:2954) [ 49.652666][ T555] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 49.652817][ T555] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 49.652996][ T555] addrconf_notify (net/ipv6/addrconf.c:3811) [ 49.653139][ T555] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 49.653368][ T555] dev_close_many (net/core/dev.c:1571) [ 49.653509][ T555] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 49.653647][ T555] ? __pfx_dev_close_many (net/core/dev.c:1558) [ 49.653787][ T555] ? __netdev_upper_dev_unlink (net/core/dev.c:7945 (discriminator 11)) [ 49.654055][ T555] unregister_netdevice_many_notify (net/core/dev.c:11146) [ 49.654230][ T555] ? unregister_netdevice_queue (net/core/dev.c:11098) [ 49.654401][ T555] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 49.654664][ T555] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 49.654838][ T555] ? netdev_upper_dev_unlink (net/core/dev.c:7984) [ 49.654984][ T555] ? __pfx_netdev_upper_dev_unlink (net/core/dev.c:7984) [ 49.655161][ T555] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 49.655392][ T555] ? 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) [ 49.655541][ T555] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 49.655691][ T555] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 49.655836][ T555] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 49.656071][ T555] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 49.656215][ T555] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 49.656357][ T555] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 49.656497][ T555] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 49.656645][ T555] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 49.656786][ T555] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 49.657012][ T555] ? 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) [ 49.657153][ T555] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 49.657258][ T555] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 49.657491][ T555] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 49.657634][ T555] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 49.657896][ T555] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 49.658031][ T555] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 49.658175][ T555] ? 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) [ 49.658400][ T555] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 49.658630][ T555] ? 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) [ 49.658771][ T555] ? 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) [ 49.659000][ T555] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 49.659139][ T555] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 49.659278][ T555] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 49.659418][ T555] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:835) [ 49.659554][ T555] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:858) [ 49.659694][ T555] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 49.659833][ T555] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 49.659975][ T555] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 49.660116][ T555] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 49.660346][ T555] ? __pfx___sys_sendto (net/socket.c:2161) [ 49.660486][ T555] ? __lock_release (kernel/locking/lockdep.c:5430) [ 49.660623][ T555] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 49.660762][ T555] ? fd_install (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:894 fs/file.c:626) [ 49.660898][ T555] ? fd_install (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:896 fs/file.c:626) [ 49.661035][ T555] ? __sys_socket (net/socket.c:497 net/socket.c:1715) [ 49.661171][ T555] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 49.661340][ T555] ? __pfx___sys_socket (net/socket.c:1702) [ 49.661478][ T555] __x64_sys_sendto (net/socket.c:2199) [ 49.661615][ T555] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 49.661784][ T555] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 49.661921][ T555] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 49.662175][ T555] RIP: 0033:0x7f809beb8700 [ 49.662319][ T555] 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 [ 49.662900][ T555] RSP: 002b:00007fffaf5e6968 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 49.663112][ T555] RAX: ffffffffffffffda RBX: 0000000000000030 RCX: 00007f809beb8700 [ 49.663319][ T555] RDX: 0000000000000030 RSI: 00007fffaf5e6970 RDI: 0000000000000005 [ 49.663607][ T555] RBP: 0000000000404780 R08: 0000000000000000 R09: 0000000000000000 [ 49.663819][ T555] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add