====================================== | [ 84.374784][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 84.374955][ T345] | [ 84.375025][ T345] | [ 84.375025][ T345] stack backtrace: [ 84.375484][ T345] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 84.375803][ T345] Call Trace: [ 84.375912][ T345] [ 84.375995][ T345] dump_stack_lvl (lib/dump_stack.c:117) [ 84.376246][ T345] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 84.376386][ T345] ? 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) [ 84.376527][ T345] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 84.376701][ T345] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 84.376920][ T345] ? __bfs (kernel/locking/lockdep.c:1787) [ 84.377026][ T345] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 84.377162][ T345] check_irq_usage (kernel/locking/lockdep.c:2871) [ 84.377300][ T345] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 84.377520][ T345] ? __bfs (kernel/locking/lockdep.c:1787) [ 84.377623][ T345] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 84.377761][ T345] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 84.377899][ T345] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 84.378050][ T345] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 84.378284][ T345] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 84.378422][ T345] check_prev_add (kernel/locking/lockdep.c:3138) [ 84.378559][ T345] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 84.378696][ T345] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 84.378918][ T345] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 84.379022][ T345] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 84.379159][ T345] ? 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) [ 84.379295][ T345] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 84.379402][ T345] __lock_acquire (kernel/locking/lockdep.c:5137) [ 84.379624][ T345] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 84.379784][ T345] ? __get_task_comm (fs/exec.c:1234) [ 84.379928][ T345] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 84.380050][ T345] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 84.380285][ T345] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 84.380424][ T345] ? __get_task_comm (fs/exec.c:1234) [ 84.380565][ T345] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 84.380720][ T345] ? __get_task_comm (fs/exec.c:1234) [ 84.380976][ T345] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 84.381183][ T345] ? __get_task_comm (fs/exec.c:1234) [ 84.381387][ T345] __get_task_comm (fs/exec.c:1234) [ 84.381585][ T345] ref_tracker_alloc (lib/ref_tracker.c:217) [ 84.381810][ T345] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 84.382016][ T345] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 84.382226][ T345] ? rt_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv4/route.c:1555) [ 84.382443][ T345] ? fib_netdev_event (net/ipv4/fib_frontend.c:1520) [ 84.382680][ T345] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 84.382917][ T345] ? unregister_netdevice_many_notify (net/core/dev.c:11171) [ 84.383190][ T345] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 84.383415][ T345] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 84.383640][ T345] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 84.383844][ T345] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 84.384015][ T345] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 84.384176][ T345] ? ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 84.384322][ T345] ? ___sys_sendmsg (net/socket.c:2640) [ 84.384466][ T345] ? __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 84.384607][ T345] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 84.384744][ T345] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 84.384918][ T345] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 84.385059][ T345] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 84.385206][ T345] ? rt_flush_dev (net/ipv4/route.c:1551) [ 84.385346][ T345] rt_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv4/route.c:1555) [ 84.385487][ T345] ? __timer_delete_sync (kernel/time/timer.c:1648 (discriminator 1)) [ 84.385653][ T345] ? __timer_delete_sync (kernel/time/timer.c:1668 (discriminator 34)) [ 84.385795][ T345] fib_netdev_event (net/ipv4/fib_frontend.c:1520) [ 84.385937][ T345] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 84.386078][ T345] unregister_netdevice_many_notify (net/core/dev.c:11171) [ 84.386262][ T345] ? 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) [ 84.386402][ T345] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 84.386578][ T345] ? 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) [ 84.386716][ T345] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 84.386896][ T345] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 84.387044][ T345] ? 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) [ 84.387190][ T345] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 84.387340][ T345] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 84.387482][ T345] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 84.387633][ T345] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 84.387771][ T345] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6592) [ 84.387908][ T345] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 84.388087][ T345] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 84.388228][ T345] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 84.388372][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 84.388515][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 84.388653][ T345] ? 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) [ 84.388791][ T345] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 84.388899][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 84.389037][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 84.389177][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 84.389322][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 84.389484][ T345] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 84.389633][ T345] ? 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) [ 84.389771][ T345] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 84.389917][ T345] ? 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) [ 84.390053][ T345] ? 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) [ 84.390192][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 84.390333][ T345] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 84.390472][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 84.390612][ T345] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 84.390771][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 84.390927][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 84.391064][ T345] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 84.391220][ T345] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 84.391366][ T345] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 84.391516][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2530) [ 84.391656][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [ 84.391832][ T345] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 84.391988][ T345] ___sys_sendmsg (net/socket.c:2640) [ 84.392140][ T345] ? __pfx____sys_sendmsg (net/socket.c:2627) [ 84.392279][ T345] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 84.392430][ T345] ? __lock_release (kernel/locking/lockdep.c:5430) [ 84.392567][ T345] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 84.392762][ T345] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 84.392902][ T345] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 84.393043][ T345] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 84.393214][ T345] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 84.393355][ T345] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 84.393492][ T345] ? __pfx___sys_sendmsg (net/socket.c:2655) [ 84.393647][ T345] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 84.393787][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 84.394004][ T345] RIP: 0033:0x7fe45eb677b7 [ 84.394203][ T345] 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) [ 84.394898][ T345] RSP: 002b:00007ffd786849f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 84.395159][ T345] RAX: ffffffffffffffda RBX: 0000000013500320 RCX: 00007fe45eb677b7 [ 84.395410][ T345] RDX: 0000000000000000 RSI: 00007ffd78684a30 RDI: 0000000000000005 [ 84.395624][ T345] RBP: 0000000013500230 R08: 0000000000000003 R09: 0000000000000000 [ 84.395833][ T345] R10: 0000000000000080 R11: 0000000000000246 R12: 0000000013527be0 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add