====================================== | [ 31.618458][ T318] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 31.618631][ T318] | [ 31.618708][ T318] | [ 31.618708][ T318] stack backtrace: [ 31.619176][ T318] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 31.619481][ T318] Call Trace: [ 31.619591][ T318] [ 31.619746][ T318] dump_stack_lvl (lib/dump_stack.c:117) [ 31.619889][ T318] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 31.620029][ T318] ? 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) [ 31.620168][ T318] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 31.620429][ T318] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 31.620569][ T318] ? __bfs (kernel/locking/lockdep.c:1787) [ 31.620674][ T318] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 31.620816][ T318] check_irq_usage (kernel/locking/lockdep.c:2871) [ 31.620960][ T318] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 31.621267][ T318] ? __bfs (kernel/locking/lockdep.c:1787) [ 31.621371][ T318] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 31.621512][ T318] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 31.621654][ T318] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 31.621876][ T318] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 31.622019][ T318] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 31.622158][ T318] check_prev_add (kernel/locking/lockdep.c:3138) [ 31.622297][ T318] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 31.622435][ T318] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 31.622661][ T318] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 31.622766][ T318] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 31.622908][ T318] ? 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) [ 31.623046][ T318] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 31.623236][ T318] __lock_acquire (kernel/locking/lockdep.c:5137) [ 31.623378][ T318] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 31.623517][ T318] ? __get_task_comm (fs/exec.c:1234) [ 31.623658][ T318] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 31.623763][ T318] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 31.623987][ T318] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 31.624127][ T318] ? __get_task_comm (fs/exec.c:1234) [ 31.624269][ T318] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 31.624408][ T318] ? __get_task_comm (fs/exec.c:1234) [ 31.624630][ T318] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 31.624768][ T318] ? __get_task_comm (fs/exec.c:1234) [ 31.624905][ T318] __get_task_comm (fs/exec.c:1234) [ 31.625044][ T318] ref_tracker_alloc (lib/ref_tracker.c:217) [ 31.625271][ T318] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 31.625410][ T318] ? __lock_release (kernel/locking/lockdep.c:5430) [ 31.625548][ T318] ? rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 31.625723][ T318] ? rt6_disable_ip (net/ipv6/route.c:4910) [ 31.625863][ T318] ? addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 31.626003][ T318] ? addrconf_notify (net/ipv6/addrconf.c:3811) [ 31.626141][ T318] ? notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 31.626279][ T318] ? dev_close_many (net/core/dev.c:1571) [ 31.626418][ T318] ? unregister_netdevice_many_notify (net/core/dev.c:11146) [ 31.626590][ T318] ? rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 31.626730][ T318] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 31.626872][ T318] ? netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 31.627013][ T318] ? netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 31.627235][ T318] ? netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 31.627372][ T318] ? ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 31.627509][ T318] ? ___sys_sendmsg (net/socket.c:2640) [ 31.627647][ T318] ? __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 31.627867][ T318] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 31.628007][ T318] ? in6_dev_get (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/addrconf.h:373) [ 31.628147][ T318] rt6_uncached_list_flush_dev (./include/linux/netdevice.h:4036 ./include/linux/netdevice.h:4114 net/ipv6/route.c:185) [ 31.628323][ T318] rt6_disable_ip (net/ipv6/route.c:4910) [ 31.628545][ T318] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4907) [ 31.628689][ T318] ? 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) [ 31.628841][ T318] addrconf_ifdown.isra.0 (./include/net/addrconf.h:324 net/ipv6/addrconf.c:3856) [ 31.628981][ T318] ? __try_to_del_timer_sync (kernel/time/timer.c:1500) [ 31.629207][ T318] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3841) [ 31.629380][ T318] addrconf_notify (net/ipv6/addrconf.c:3811) [ 31.629520][ T318] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 31.629659][ T318] dev_close_many (net/core/dev.c:1571) [ 31.629882][ T318] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 31.630019][ T318] ? __pfx_dev_close_many (net/core/dev.c:1558) [ 31.630158][ T318] ? sock_def_readable (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/core/sock.c:3356) [ 31.630297][ T318] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 31.630519][ T318] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 31.630656][ T318] unregister_netdevice_many_notify (net/core/dev.c:11146) [ 31.630831][ T318] ? 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) [ 31.630971][ T318] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11113) [ 31.631228][ T318] ? 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) [ 31.631365][ T318] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11097) [ 31.631544][ T318] rtnl_dellink (net/core/rtnetlink.c:3238 net/core/rtnetlink.c:3288) [ 31.631681][ T318] ? 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) [ 31.631986][ T318] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3244) [ 31.632143][ T318] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 31.632284][ T318] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 31.632421][ T318] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 31.632649][ T318] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6592) [ 31.632786][ T318] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 31.632923][ T318] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 31.633061][ T318] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 31.633203][ T318] rtnetlink_rcv_msg (net/core/rtnetlink.c:6594) [ 31.633448][ T318] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 31.633590][ T318] ? 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) [ 31.633727][ T318] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 31.633832][ T318] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 31.633971][ T318] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [ 31.634111][ T318] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6488) [ 31.634249][ T318] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [ 31.634385][ T318] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 31.634526][ T318] ? 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) [ 31.634666][ T318] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 31.634803][ T318] ? 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) [ 31.634942][ T318] ? 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) [ 31.635079][ T318] ? netlink_deliver_tap (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/netlink/af_netlink.c:340) [ 31.635219][ T318] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [ 31.635358][ T318] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [ 31.635495][ T318] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 31.635634][ T318] netlink_sendmsg (net/netlink/af_netlink.c:1905) [ 31.635860][ T318] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [ 31.636007][ T318] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 31.636149][ T318] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 31.636288][ T318] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [ 31.636511][ T318] ? __pfx_____sys_sendmsg (net/socket.c:2530) [ 31.636649][ T318] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [ 31.636820][ T318] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 31.636962][ T318] ___sys_sendmsg (net/socket.c:2640) [ 31.637187][ T318] ? __pfx____sys_sendmsg (net/socket.c:2627) [ 31.637325][ T318] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 31.637463][ T318] ? __lock_release (kernel/locking/lockdep.c:5430) [ 31.637600][ T318] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 31.637861][ T318] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 31.638001][ T318] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 31.638139][ T318] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 31.638320][ T318] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 31.638552][ T318] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2669) [ 31.638695][ T318] ? __pfx___sys_sendmsg (net/socket.c:2655) [ 31.638857][ T318] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 31.638996][ T318] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 31.639251][ T318] RIP: 0033:0x7f6fd54fe7b7 [ 31.639394][ T318] 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) [ 31.639973][ T318] RSP: 002b:00007ffcf21341e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 31.640186][ T318] RAX: ffffffffffffffda RBX: 00007ffcf2134910 RCX: 00007f6fd54fe7b7 [ 31.640392][ T318] RDX: 0000000000000000 RSI: 00007ffcf2134250 RDI: 0000000000000005 [ 31.640683][ T318] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 31.640893][ T318] R10: 00007f6fd53bcef8 R11: 0000000000000246 R12: 0000000000000001 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add