====================================== | [ 125.269355][ T1244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 125.269548][ T1244] | [ 125.269627][ T1244] | [ 125.269627][ T1244] stack backtrace: [ 125.270149][ T1244] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 125.270495][ T1244] Call Trace: [ 125.270621][ T1244] [ 125.270701][ T1244] dump_stack_lvl (lib/dump_stack.c:117) [ 125.270861][ T1244] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 125.271020][ T1244] ? 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) [ 125.271176][ T1244] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 125.271540][ T1244] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 125.271695][ T1244] ? __bfs (kernel/locking/lockdep.c:1787) [ 125.271814][ T1244] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 125.271971][ T1244] check_irq_usage (kernel/locking/lockdep.c:2871) [ 125.272129][ T1244] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 125.272371][ T1244] ? __bfs (kernel/locking/lockdep.c:1787) [ 125.272490][ T1244] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 125.272648][ T1244] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 125.272803][ T1244] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 125.273048][ T1244] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 125.273210][ T1244] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 125.273365][ T1244] check_prev_add (kernel/locking/lockdep.c:3138) [ 125.273521][ T1244] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 125.273676][ T1244] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 125.273834][ T1244] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 125.273953][ T1244] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 125.274109][ T1244] ? 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) [ 125.274263][ T1244] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 125.274468][ T1244] __lock_acquire (kernel/locking/lockdep.c:5137) [ 125.274627][ T1244] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 125.274780][ T1244] ? __get_task_comm (fs/exec.c:1234) [ 125.274938][ T1244] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 125.275058][ T1244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 125.275303][ T1244] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 125.275457][ T1244] ? __get_task_comm (fs/exec.c:1234) [ 125.275608][ T1244] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 125.275762][ T1244] ? __get_task_comm (fs/exec.c:1234) [ 125.276011][ T1244] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 125.276165][ T1244] ? __get_task_comm (fs/exec.c:1234) [ 125.276319][ T1244] __get_task_comm (fs/exec.c:1234) [ 125.276470][ T1244] ref_tracker_alloc (lib/ref_tracker.c:217) [ 125.276628][ T1244] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 125.276785][ T1244] ? __lock_release (kernel/locking/lockdep.c:5430) [ 125.276942][ T1244] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 125.277139][ T1244] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 125.277378][ T1244] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 125.277536][ T1244] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 125.277688][ T1244] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 125.277841][ T1244] ? unregister_netdevice_many_notify (net/core/dev.c:11171) [ 125.278113][ T1244] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 125.278264][ T1244] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 125.278417][ T1244] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 125.278575][ T1244] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 125.278816][ T1244] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 125.278970][ T1244] ? ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 125.279125][ T1244] ? ___sys_sendmsg (net/socket.c:2640) [ 125.279289][ T1244] ? __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 125.279443][ T1244] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 125.279679][ T1244] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 125.279870][ T1244] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 125.280028][ T1244] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 125.280306][ T1244] rt6_disable_ip (net/ipv6/route.c:4910) [ 125.280472][ T1244] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 125.280630][ T1244] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 125.280749][ T1244] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 125.280909][ T1244] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 125.281147][ T1244] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 125.281341][ T1244] addrconf_notify (net/ipv6/addrconf.c:3811) [ 125.281499][ T1244] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 125.281656][ T1244] unregister_netdevice_many_notify (net/core/dev.c:11171) [ 125.281934][ T1244] ? 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) [ 125.282091][ T1244] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 125.282283][ T1244] ? 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) [ 125.282437][ T1244] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 125.282716][ T1244] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 125.282872][ T1244] ? 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) [ 125.283035][ T1244] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 125.283199][ T1244] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 125.283525][ T1244] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 125.283677][ T1244] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 125.283830][ T1244] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6592) [ 125.283986][ T1244] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 125.284226][ T1244] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 125.284381][ T1244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 125.284537][ T1244] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 125.284692][ T1244] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 125.284931][ T1244] ? 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) [ 125.285083][ T1244] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 125.285203][ T1244] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 125.285357][ T1244] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 125.285516][ T1244] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 125.285670][ T1244] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 125.285824][ T1244] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 125.285980][ T1244] ? 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) [ 125.286136][ T1244] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 125.286376][ T1244] ? 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) [ 125.286533][ T1244] ? 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) [ 125.286687][ T1244] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 125.286842][ T1244] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 125.287099][ T1244] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 125.287255][ T1244] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 125.287410][ T1244] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 125.287570][ T1244] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 125.287726][ T1244] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 125.287882][ T1244] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 125.288037][ T1244] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 125.288194][ T1244] ? __pfx_____sys_sendmsg (net/socket.c:2530) [ 125.288350][ T1244] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [ 125.288625][ T1244] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 125.288782][ T1244] ___sys_sendmsg (net/socket.c:2640) [ 125.288939][ T1244] ? __pfx____sys_sendmsg (net/socket.c:2627) [ 125.289094][ T1244] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 125.289343][ T1244] ? __lock_release (kernel/locking/lockdep.c:5430) [ 125.289497][ T1244] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 125.289689][ T1244] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 125.289845][ T1244] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 125.290100][ T1244] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 125.290298][ T1244] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 125.290454][ T1244] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 125.290610][ T1244] ? __pfx___sys_sendmsg (net/socket.c:2655) [ 125.290770][ T1244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 125.290927][ T1244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 125.291132][ T1244] RIP: 0033:0x7fa62a5a47b7 [ 125.291294][ T1244] 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) [ 125.291932][ T1244] RSP: 002b:00007ffc4bb68a18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 125.292274][ T1244] RAX: ffffffffffffffda RBX: 00007ffc4bb69150 RCX: 00007fa62a5a47b7 [ 125.292527][ T1244] RDX: 0000000000000000 RSI: 00007ffc4bb68a80 RDI: 0000000000000005 [ 125.292771][ T1244] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 125.293117][ T1244] R10: 00007fa62a4624a8 R11: 0000000000000246 R12: 0000000000000001 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add