====================================== | [ 29.360596][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 29.360774][ T292] | [ 29.360846][ T292] | [ 29.360846][ T292] stack backtrace: [ 29.361316][ T292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 29.361710][ T292] Call Trace: [ 29.361827][ T292] [ 29.361901][ T292] dump_stack_lvl (lib/dump_stack.c:117) [ 29.362046][ T292] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 29.362187][ T292] ? 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) [ 29.362415][ T292] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 29.362592][ T292] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 29.362733][ T292] ? __bfs (kernel/locking/lockdep.c:1787) [ 29.362839][ T292] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 29.363065][ T292] check_irq_usage (kernel/locking/lockdep.c:2871) [ 29.363207][ T292] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 29.363347][ T292] ? __bfs (kernel/locking/lockdep.c:1787) [ 29.363454][ T292] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 29.363596][ T292] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 29.363905][ T292] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 29.364047][ T292] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 29.364192][ T292] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 29.364331][ T292] check_prev_add (kernel/locking/lockdep.c:3138) [ 29.364558][ T292] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 29.364700][ T292] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 29.364842][ T292] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 29.364950][ T292] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 29.365176][ T292] ? 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) [ 29.365318][ T292] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 29.365426][ T292] __lock_acquire (kernel/locking/lockdep.c:5137) [ 29.365571][ T292] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 29.365713][ T292] ? __get_task_comm (fs/exec.c:1234) [ 29.365937][ T292] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 29.366044][ T292] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 29.366187][ T292] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 29.366332][ T292] ? __get_task_comm (fs/exec.c:1234) [ 29.366557][ T292] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 29.366699][ T292] ? __get_task_comm (fs/exec.c:1234) [ 29.366841][ T292] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 29.366981][ T292] ? __get_task_comm (fs/exec.c:1234) [ 29.367123][ T292] __get_task_comm (fs/exec.c:1234) [ 29.367348][ T292] ref_tracker_alloc (lib/ref_tracker.c:217) [ 29.367503][ T292] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 29.367646][ T292] ? __lock_release (kernel/locking/lockdep.c:5430) [ 29.367790][ T292] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 29.368048][ T292] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 29.368189][ T292] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 29.368332][ T292] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 29.368473][ T292] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 29.368698][ T292] ? dev_close_many (net/core/dev.c:1571) [ 29.368839][ T292] ? unregister_netdevice_many_notify (net/core/dev.c:11146) [ 29.369013][ T292] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 29.369156][ T292] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 29.369384][ T292] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 29.369526][ T292] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 29.369667][ T292] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 29.369808][ T292] ? ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 29.370031][ T292] ? ___sys_sendmsg (net/socket.c:2640) [ 29.370172][ T292] ? __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 29.370314][ T292] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 29.370456][ T292] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 29.370683][ T292] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 29.370860][ T292] rt6_disable_ip (net/ipv6/route.c:4910) [ 29.371001][ T292] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 29.371141][ T292] ? 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) [ 29.371366][ T292] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 29.371509][ T292] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 29.371652][ T292] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 29.371831][ T292] addrconf_notify (net/ipv6/addrconf.c:3811) [ 29.372058][ T292] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 29.372200][ T292] dev_close_many (net/core/dev.c:1571) [ 29.372341][ T292] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 29.372480][ T292] ? __pfx_dev_close_many (net/core/dev.c:1558) [ 29.372622][ T292] ? sock_def_readable (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/core/sock.c:3356) [ 29.372847][ T292] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 29.372986][ T292] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 29.373127][ T292] unregister_netdevice_many_notify (net/core/dev.c:11146) [ 29.373304][ T292] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 29.373529][ T292] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 29.373702][ T292] ? 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) [ 29.373842][ T292] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 29.374105][ T292] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 29.374246][ T292] ? 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) [ 29.374385][ T292] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 29.374536][ T292] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 29.374680][ T292] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 29.374987][ T292] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 29.375128][ T292] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6592) [ 29.375269][ T292] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 29.375410][ T292] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 29.375637][ T292] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 29.375781][ T292] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 29.375922][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 29.376064][ T292] ? 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) [ 29.376290][ T292] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 29.376399][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 29.376540][ T292] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 29.376681][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 29.376821][ T292] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 29.377045][ T292] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 29.377190][ T292] ? 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) [ 29.377334][ T292] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 29.377482][ T292] ? 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) [ 29.377708][ T292] ? 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) [ 29.377850][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 29.377991][ T292] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 29.378133][ T292] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 29.378357][ T292] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 29.378501][ T292] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 29.378643][ T292] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 29.378785][ T292] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 29.379013][ T292] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 29.379155][ T292] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 29.379297][ T292] ? __pfx_____sys_sendmsg (net/socket.c:2530) [ 29.379436][ T292] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [ 29.379694][ T292] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 29.379841][ T292] ___sys_sendmsg (net/socket.c:2640) [ 29.379984][ T292] ? __pfx____sys_sendmsg (net/socket.c:2627) [ 29.380131][ T292] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 29.380272][ T292] ? __lock_release (kernel/locking/lockdep.c:5430) [ 29.380498][ T292] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 29.380675][ T292] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 29.380819][ T292] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 29.380961][ T292] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 29.381224][ T292] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 29.381368][ T292] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 29.381509][ T292] ? __pfx___sys_sendmsg (net/socket.c:2655) [ 29.381655][ T292] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 29.381879][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 29.382054][ T292] RIP: 0033:0x7f393c1597b7 [ 29.382203][ T292] 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) [ 29.382804][ T292] RSP: 002b:00007ffc0ff45e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 29.383022][ T292] RAX: ffffffffffffffda RBX: 00007ffc0ff465b0 RCX: 00007f393c1597b7 [ 29.383321][ T292] RDX: 0000000000000000 RSI: 00007ffc0ff45ef0 RDI: 0000000000000005 [ 29.383531][ T292] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 29.383743][ T292] R10: 00007f393c017ef8 R11: 0000000000000246 R12: 0000000000000001 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add