====================================== | [ 1680.374383][ T4972] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 1680.374571][ T4972] | [ 1680.374648][ T4972] | [ 1680.374648][ T4972] stack backtrace: [ 1680.375164][ T4972] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1680.375489][ T4972] Call Trace: [ 1680.375606][ T4972] [ 1680.375687][ T4972] dump_stack_lvl (lib/dump_stack.c:117) [ 1680.375851][ T4972] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 1680.376001][ T4972] ? 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) [ 1680.376156][ T4972] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 1680.376347][ T4972] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 1680.376589][ T4972] ? __bfs (kernel/locking/lockdep.c:1787) [ 1680.376701][ T4972] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 1680.376856][ T4972] check_irq_usage (kernel/locking/lockdep.c:2871) [ 1680.377007][ T4972] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 1680.377254][ T4972] ? __bfs (kernel/locking/lockdep.c:1787) [ 1680.377369][ T4972] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 1680.377523][ T4972] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 1680.377669][ T4972] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 1680.377817][ T4972] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 1680.378056][ T4972] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 1680.378202][ T4972] check_prev_add (kernel/locking/lockdep.c:3138) [ 1680.378351][ T4972] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 1680.378505][ T4972] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 1680.378743][ T4972] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1680.378855][ T4972] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1680.379001][ T4972] ? 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) [ 1680.379157][ T4972] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1680.379273][ T4972] __lock_acquire (kernel/locking/lockdep.c:5137) [ 1680.379529][ T4972] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1680.379679][ T4972] ? __get_task_comm (fs/exec.c:1234) [ 1680.379829][ T4972] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1680.379946][ T4972] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1680.380184][ T4972] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1680.380363][ T4972] ? __get_task_comm (fs/exec.c:1234) [ 1680.380518][ T4972] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1680.380668][ T4972] ? __get_task_comm (fs/exec.c:1234) [ 1680.380819][ T4972] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 1680.381060][ T4972] ? __get_task_comm (fs/exec.c:1234) [ 1680.381206][ T4972] __get_task_comm (fs/exec.c:1234) [ 1680.381359][ T4972] ref_tracker_alloc (lib/ref_tracker.c:217) [ 1680.381514][ T4972] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 1680.381660][ T4972] ? __lock_release (kernel/locking/lockdep.c:5430) [ 1680.381846][ T4972] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 1680.382116][ T4972] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 1680.382325][ T4972] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 1680.382536][ T4972] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 1680.382771][ T4972] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 1680.382976][ T4972] ? __dev_notify_flags (net/core/dev.c:8800) [ 1680.383189][ T4972] ? dev_change_flags (net/core/dev.c:8835) [ 1680.383395][ T4972] ? cycle_netdev (drivers/net/vrf.c:1092) [ 1680.383604][ T4972] ? vrf_dellink (drivers/net/vrf.c:1712) [ 1680.383838][ T4972] ? rtnl_dellink (net/core/rtnetlink.c:3235 net/core/rtnetlink.c:3288) [ 1680.384063][ T4972] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 1680.384335][ T4972] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 1680.384582][ T4972] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 1680.384801][ T4972] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 1680.385033][ T4972] ? ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 1680.385281][ T4972] ? ___sys_sendmsg (net/socket.c:2640) [ 1680.385524][ T4972] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 1680.385762][ T4972] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 1680.386059][ T4972] rt6_disable_ip (net/ipv6/route.c:4910) [ 1680.386298][ T4972] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 1680.386540][ T4972] ? 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) [ 1680.386752][ T4972] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 1680.386908][ T4972] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 1680.387075][ T4972] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 1680.387361][ T4972] addrconf_notify (net/ipv6/addrconf.c:3811) [ 1680.387514][ T4972] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 1680.387684][ T4972] __dev_notify_flags (net/core/dev.c:8800) [ 1680.387839][ T4972] ? __pfx___dev_notify_flags (net/core/dev.c:8787) [ 1680.388180][ T4972] ? __pfx___dev_change_flags (net/core/dev.c:8720) [ 1680.388325][ T4972] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1680.388479][ T4972] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1680.388649][ T4972] dev_change_flags (net/core/dev.c:8835) [ 1680.388798][ T4972] cycle_netdev (drivers/net/vrf.c:1092) [ 1680.388915][ T4972] vrf_dellink (drivers/net/vrf.c:1712) [ 1680.389026][ T4972] ? __pfx_vrf_dellink (drivers/net/vrf.c:1708) [ 1680.389180][ T4972] rtnl_dellink (net/core/rtnetlink.c:3235 net/core/rtnetlink.c:3288) [ 1680.389337][ T4972] ? 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) [ 1680.389589][ T4972] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 1680.389753][ T4972] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 1680.389910][ T4972] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 1680.390062][ T4972] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1680.390302][ T4972] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6592) [ 1680.390452][ T4972] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 1680.390621][ T4972] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1680.390831][ T4972] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1680.391079][ T4972] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 1680.391230][ T4972] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 1680.391386][ T4972] ? 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) [ 1680.391540][ T4972] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1680.391665][ T4972] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 1680.391818][ T4972] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 1680.391966][ T4972] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 1680.392114][ T4972] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 1680.392261][ T4972] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1680.392503][ T4972] ? 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) [ 1680.392667][ T4972] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1680.392814][ T4972] ? 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) [ 1680.392961][ T4972] ? 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) [ 1680.393201][ T4972] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 1680.393351][ T4972] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 1680.393503][ T4972] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 1680.393662][ T4972] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1680.393811][ T4972] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 1680.394055][ T4972] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 1680.394201][ T4972] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 1680.394356][ T4972] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 1680.394521][ T4972] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 1680.394835][ T4972] ? __pfx_____sys_sendmsg (net/socket.c:2530) [ 1680.394983][ T4972] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [ 1680.395182][ T4972] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1680.395335][ T4972] ___sys_sendmsg (net/socket.c:2640) [ 1680.395605][ T4972] ? __pfx____sys_sendmsg (net/socket.c:2627) [ 1680.395757][ T4972] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1680.395905][ T4972] ? __lock_release (kernel/locking/lockdep.c:5430) [ 1680.396054][ T4972] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 1680.396336][ T4972] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1680.396488][ T4972] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 1680.396640][ T4972] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 1680.396833][ T4972] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 1680.397084][ T4972] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 1680.397230][ T4972] ? __pfx___sys_sendmsg (net/socket.c:2655) [ 1680.397384][ T4972] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1680.397534][ T4972] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1680.397808][ T4972] RIP: 0033:0x7f44126d47b7 [ 1680.397972][ T4972] 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) [ 1680.398612][ T4972] RSP: 002b:00007fff6cf04538 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1680.398863][ T4972] RAX: ffffffffffffffda RBX: 00007fff6cf04c60 RCX: 00007f44126d47b7 [ 1680.399098][ T4972] RDX: 0000000000000000 RSI: 00007fff6cf045a0 RDI: 0000000000000005 [ 1680.399438][ T4972] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 1680.399677][ T4972] R10: 00007f4412592ef8 R11: 0000000000000246 R12: 0000000000000001 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add