====================================== | [ 1894.316295][ T6158] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 1894.316480][ T6158] | [ 1894.316556][ T6158] | [ 1894.316556][ T6158] stack backtrace: [ 1894.316974][ T6158] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1894.317309][ T6158] Call Trace: [ 1894.317424][ T6158] [ 1894.317501][ T6158] dump_stack_lvl (lib/dump_stack.c:117) [ 1894.317656][ T6158] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 1894.317807][ T6158] ? 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) [ 1894.318143][ T6158] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 1894.318328][ T6158] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 1894.318480][ T6158] ? __bfs (kernel/locking/lockdep.c:1787) [ 1894.318592][ T6158] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 1894.318740][ T6158] check_irq_usage (kernel/locking/lockdep.c:2871) [ 1894.318890][ T6158] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 1894.319038][ T6158] ? __bfs (kernel/locking/lockdep.c:1787) [ 1894.319148][ T6158] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 1894.319297][ T6158] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 1894.319443][ T6158] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 1894.319594][ T6158] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 1894.319747][ T6158] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 1894.319894][ T6158] check_prev_add (kernel/locking/lockdep.c:3138) [ 1894.320146][ T6158] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 1894.320296][ T6158] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 1894.320444][ T6158] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1894.320557][ T6158] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1894.320707][ T6158] ? 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) [ 1894.320853][ T6158] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1894.320971][ T6158] __lock_acquire (kernel/locking/lockdep.c:5137) [ 1894.321120][ T6158] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1894.321270][ T6158] ? __get_task_comm (fs/exec.c:1234) [ 1894.321422][ T6158] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1894.321535][ T6158] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1894.321682][ T6158] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1894.321833][ T6158] ? __get_task_comm (fs/exec.c:1234) [ 1894.322068][ T6158] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1894.322220][ T6158] ? __get_task_comm (fs/exec.c:1234) [ 1894.322369][ T6158] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 1894.322515][ T6158] ? __get_task_comm (fs/exec.c:1234) [ 1894.322662][ T6158] __get_task_comm (fs/exec.c:1234) [ 1894.322812][ T6158] ref_tracker_alloc (lib/ref_tracker.c:217) [ 1894.322961][ T6158] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1894.323108][ T6158] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 1894.323253][ T6158] ? rt_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv4/route.c:1555) [ 1894.323483][ T6158] ? fib_netdev_event (net/ipv4/fib_frontend.c:1520) [ 1894.323636][ T6158] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 1894.323784][ T6158] ? unregister_netdevice_many_notify (net/core/dev.c:11171) [ 1894.323967][ T6158] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 1894.324203][ T6158] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 1894.324348][ T6158] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 1894.324495][ T6158] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 1894.324643][ T6158] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 1894.324789][ T6158] ? ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 1894.324941][ T6158] ? ___sys_sendmsg (net/socket.c:2640) [ 1894.325090][ T6158] ? __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 1894.325236][ T6158] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1894.325463][ T6158] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1894.325645][ T6158] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 1894.325794][ T6158] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1894.325945][ T6158] ? rt_flush_dev (net/ipv4/route.c:1551) [ 1894.326178][ T6158] rt_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv4/route.c:1555) [ 1894.326327][ T6158] ? __timer_delete_sync (kernel/time/timer.c:1648 (discriminator 1)) [ 1894.326480][ T6158] ? __timer_delete_sync (kernel/time/timer.c:1668 (discriminator 34)) [ 1894.326630][ T6158] fib_netdev_event (net/ipv4/fib_frontend.c:1520) [ 1894.326782][ T6158] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 1894.327018][ T6158] unregister_netdevice_many_notify (net/core/dev.c:11171) [ 1894.327202][ T6158] ? vrf_dellink (drivers/net/vrf.c:1717) [ 1894.327354][ T6158] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 1894.327618][ T6158] ? vrf_dellink (drivers/net/vrf.c:1708) [ 1894.327771][ T6158] ? __pfx_vrf_dellink (drivers/net/vrf.c:1708) [ 1894.327922][ T6158] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 1894.328069][ T6158] ? 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) [ 1894.328218][ T6158] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 1894.328460][ T6158] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 1894.328613][ T6158] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 1894.328762][ T6158] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1894.328912][ T6158] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6592) [ 1894.329225][ T6158] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 1894.329377][ T6158] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1894.329526][ T6158] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1894.329677][ T6158] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 1894.329906][ T6158] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 1894.330055][ T6158] ? 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) [ 1894.330213][ T6158] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1894.330327][ T6158] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 1894.330477][ T6158] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 1894.330709][ T6158] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 1894.330856][ T6158] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 1894.331004][ T6158] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1894.331156][ T6158] ? 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) [ 1894.331387][ T6158] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1894.331541][ T6158] ? 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) [ 1894.331690][ T6158] ? 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) [ 1894.331838][ T6158] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 1894.332088][ T6158] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 1894.332238][ T6158] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 1894.332385][ T6158] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1894.332532][ T6158] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 1894.332679][ T6158] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 1894.332825][ T6158] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 1894.332974][ T6158] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 1894.333124][ T6158] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 1894.333275][ T6158] ? __pfx_____sys_sendmsg (net/socket.c:2530) [ 1894.333420][ T6158] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [ 1894.333604][ T6158] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1894.333755][ T6158] ___sys_sendmsg (net/socket.c:2640) [ 1894.333901][ T6158] ? __pfx____sys_sendmsg (net/socket.c:2627) [ 1894.334146][ T6158] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1894.334293][ T6158] ? __lock_release (kernel/locking/lockdep.c:5430) [ 1894.334438][ T6158] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 1894.334626][ T6158] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1894.334773][ T6158] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 1894.334922][ T6158] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 1894.335109][ T6158] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 1894.335261][ T6158] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 1894.335406][ T6158] ? __pfx___sys_sendmsg (net/socket.c:2655) [ 1894.335557][ T6158] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1894.335711][ T6158] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1894.335896][ T6158] RIP: 0033:0x7f1d071d67b7 [ 1894.336155][ T6158] 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) [ 1894.336686][ T6158] RSP: 002b:00007ffd8d7f1488 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1894.336915][ T6158] RAX: ffffffffffffffda RBX: 00007ffd8d7f1bb0 RCX: 00007f1d071d67b7 [ 1894.337142][ T6158] RDX: 0000000000000000 RSI: 00007ffd8d7f14f0 RDI: 0000000000000005 [ 1894.337369][ T6158] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 1894.337590][ T6158] R10: 00007f1d07094ef8 R11: 0000000000000246 R12: 0000000000000001 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add