====================================== | [ 22.401364][ T236] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 22.401543][ T236] | [ 22.401614][ T236] | [ 22.401614][ T236] stack backtrace: [ 22.402173][ T236] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 22.402495][ T236] Call Trace: [ 22.402604][ T236] [ 22.402676][ T236] dump_stack_lvl (lib/dump_stack.c:117) [ 22.402909][ T236] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 22.403051][ 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) [ 22.403193][ T236] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 22.403459][ T236] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 22.403600][ T236] ? __bfs (kernel/locking/lockdep.c:1787) [ 22.403705][ T236] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 22.403936][ T236] check_irq_usage (kernel/locking/lockdep.c:2871) [ 22.404080][ T236] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 22.404219][ T236] ? __bfs (kernel/locking/lockdep.c:1787) [ 22.404329][ T236] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 22.404471][ T236] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 22.404701][ T236] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 22.404934][ T236] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 22.405075][ T236] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 22.405219][ T236] check_prev_add (kernel/locking/lockdep.c:3138) [ 22.405358][ T236] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 22.405501][ T236] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 22.405729][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.405837][ T236] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 22.405977][ 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) [ 22.406196][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.406415][ T236] __lock_acquire (kernel/locking/lockdep.c:5137) [ 22.406559][ T236] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 22.406698][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.406838][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.407043][ T236] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 22.407180][ T236] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 22.407320][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.407459][ T236] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 22.407685][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.407839][ T236] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 22.407976][ T236] ? __get_task_comm (fs/exec.c:1234) [ 22.408114][ T236] __get_task_comm (fs/exec.c:1234) [ 22.408259][ T236] ref_tracker_alloc (lib/ref_tracker.c:217) [ 22.408488][ T236] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 22.408624][ T236] ? __lock_release (kernel/locking/lockdep.c:5430) [ 22.408765][ T236] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 22.408936][ T236] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 22.409157][ T236] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 22.409299][ T236] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 22.409437][ T236] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 22.409581][ T236] ? dev_close_many (net/core/dev.c:1571) [ 22.409818][ T236] ? unregister_netdevice_many_notify (net/core/dev.c:11146) [ 22.409999][ T236] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 22.410147][ T236] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 22.410286][ T236] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 22.410524][ T236] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 22.410661][ T236] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 22.410795][ T236] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 22.410934][ T236] ? __x64_sys_sendto (net/socket.c:2199) [ 22.411160][ T236] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 22.411296][ T236] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 22.411476][ T236] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 22.411616][ T236] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 22.411968][ T236] rt6_disable_ip (net/ipv6/route.c:4910) [ 22.412106][ T236] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 22.412244][ 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) [ 22.412381][ T236] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 22.412519][ T236] ? __pfx_snprintf (lib/vsprintf.c:2954) [ 22.412748][ T236] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 22.412893][ T236] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 22.413066][ T236] addrconf_notify (net/ipv6/addrconf.c:3811) [ 22.413210][ T236] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 22.413347][ T236] dev_close_many (net/core/dev.c:1571) [ 22.413487][ T236] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 22.413712][ T236] ? __pfx_dev_close_many (net/core/dev.c:1558) [ 22.413859][ T236] ? __netdev_upper_dev_unlink (net/core/dev.c:7945 (discriminator 11)) [ 22.414027][ T236] unregister_netdevice_many_notify (net/core/dev.c:11146) [ 22.414199][ T236] ? unregister_netdevice_queue (net/core/dev.c:11098) [ 22.414457][ T236] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 22.414628][ T236] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 22.414799][ T236] ? netdev_upper_dev_unlink (net/core/dev.c:7984) [ 22.414938][ T236] ? __pfx_netdev_upper_dev_unlink (net/core/dev.c:7984) [ 22.415201][ T236] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 22.415339][ 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) [ 22.415475][ T236] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 22.415632][ T236] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 22.415771][ T236] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 22.415996][ T236] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 22.416136][ T236] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 22.416276][ T236] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 22.416430][ T236] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 22.416672][ T236] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 22.416808][ T236] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 22.416953][ 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) [ 22.417095][ T236] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 22.417287][ T236] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 22.417426][ T236] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 22.417572][ T236] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 22.417711][ T236] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 22.417860][ T236] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 22.418088][ 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) [ 22.418228][ T236] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 22.418364][ 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) [ 22.418505][ 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) [ 22.418825][ T236] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 22.418964][ T236] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 22.419104][ T236] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 22.419246][ T236] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:835) [ 22.419465][ T236] ? netlink_autobind.isra.0 (net/netlink/af_netlink.c:858) [ 22.419603][ T236] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 22.419750][ T236] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 22.419885][ T236] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 22.420117][ T236] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 22.420357][ T236] ? __pfx___sys_sendto (net/socket.c:2161) [ 22.420497][ T236] ? __lock_release (kernel/locking/lockdep.c:5430) [ 22.420639][ T236] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 22.420779][ T236] ? fd_install (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:894 fs/file.c:626) [ 22.420923][ T236] ? fd_install (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:896 fs/file.c:626) [ 22.421064][ T236] ? __sys_socket (net/socket.c:497 net/socket.c:1715) [ 22.421204][ T236] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 22.421387][ T236] ? __pfx___sys_socket (net/socket.c:1702) [ 22.421616][ T236] __x64_sys_sendto (net/socket.c:2199) [ 22.421759][ T236] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 22.421933][ T236] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 22.422078][ T236] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 22.422252][ T236] RIP: 0033:0x7fc5341cd700 [ 22.422398][ 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 [ 22.422989][ T236] RSP: 002b:00007ffdb35a32c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 22.423206][ T236] RAX: ffffffffffffffda RBX: 0000000000000030 RCX: 00007fc5341cd700 [ 22.423413][ T236] RDX: 0000000000000030 RSI: 00007ffdb35a32d0 RDI: 0000000000000005 [ 22.423626][ T236] RBP: 0000000000404780 R08: 0000000000000000 R09: 0000000000000000 [ 22.423924][ T236] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add