====================================== | [ 44.117162][ T406] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 44.117349][ T406] | [ 44.117419][ T406] | [ 44.117419][ T406] stack backtrace: [ 44.117893][ T406] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.118210][ T406] Call Trace: [ 44.118314][ T406] [ 44.118471][ T406] dump_stack_lvl (lib/dump_stack.c:117) [ 44.118621][ T406] print_bad_irq_dependency (kernel/locking/lockdep.c:2626) [ 44.118758][ T406] ? 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) [ 44.118902][ T406] ? __pfx_print_bad_irq_dependency (kernel/locking/lockdep.c:2569) [ 44.119071][ T406] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 44.119220][ T406] ? __bfs (kernel/locking/lockdep.c:1787) [ 44.119332][ T406] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 44.119468][ T406] check_irq_usage (kernel/locking/lockdep.c:2871) [ 44.119614][ T406] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 44.119831][ T406] ? __bfs (kernel/locking/lockdep.c:1787) [ 44.119938][ T406] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 44.120073][ T406] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 44.120212][ T406] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 44.120431][ T406] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 44.120578][ T406] ? check_prev_add (kernel/locking/lockdep.c:3138) [ 44.120713][ T406] check_prev_add (kernel/locking/lockdep.c:3138) [ 44.120849][ T406] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 44.121145][ T406] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) [ 44.121284][ T406] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 44.121387][ T406] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 44.121523][ T406] ? 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) [ 44.121657][ T406] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 44.121846][ T406] __lock_acquire (kernel/locking/lockdep.c:5137) [ 44.121984][ T406] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 44.122120][ T406] ? __get_task_comm (fs/exec.c:1234) [ 44.122261][ T406] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 44.122364][ T406] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.122589][ T406] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 44.122726][ T406] ? __get_task_comm (fs/exec.c:1234) [ 44.122860][ T406] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 44.122993][ T406] ? __get_task_comm (fs/exec.c:1234) [ 44.123141][ T406] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 44.123277][ T406] ? __get_task_comm (fs/exec.c:1234) [ 44.123416][ T406] __get_task_comm (fs/exec.c:1234) [ 44.123550][ T406] ref_tracker_alloc (lib/ref_tracker.c:217) [ 44.123770][ T406] ? __pfx_ref_tracker_alloc (lib/ref_tracker.c:193) [ 44.123903][ T406] ? dev_get_by_index (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/core/dev.c:888) [ 44.124038][ T406] ? netdev_get_by_index (net/core/dev.c:914) [ 44.124175][ T406] ? fib6_nh_init (net/ipv6/route.c:3541) [ 44.124399][ T406] ? ip6_route_info_create (net/ipv6/route.c:3808) [ 44.124533][ T406] ? addrconf_f6i_alloc (net/ipv6/route.c:4584) [ 44.124691][ T406] ? __ipv6_dev_ac_inc (net/ipv6/anycast.c:309) [ 44.124833][ T406] ? addrconf_join_anycast (net/ipv6/addrconf.c:2264) [ 44.124969][ T406] ? dev_forward_change (./include/linux/list.h:373 net/ipv6/addrconf.c:833) [ 44.125188][ T406] ? addrconf_fixup_forwarding (net/ipv6/addrconf.c:854 net/ipv6/addrconf.c:898) [ 44.125354][ T406] ? addrconf_sysctl_forward (net/ipv6/addrconf.c:6329) [ 44.125495][ T406] ? proc_sys_call_handler (fs/proc/proc_sysctl.c:595) [ 44.125631][ T406] ? vfs_write (./include/linux/fs.h:2108 fs/read_write.c:497 fs/read_write.c:590) [ 44.125846][ T406] ? ksys_write (fs/read_write.c:643) [ 44.125980][ T406] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 44.126118][ T406] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 44.126291][ T406] ? dev_get_by_index (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/core/dev.c:888) [ 44.126511][ T406] netdev_get_by_index (net/core/dev.c:914) [ 44.126647][ T406] fib6_nh_init (net/ipv6/route.c:3541) [ 44.126782][ T406] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 44.126962][ T406] ? __pfx_fib6_nh_init (net/ipv6/route.c:3522) [ 44.127107][ T406] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 44.127246][ T406] ? __kasan_kmalloc (mm/kasan/common.c:391) [ 44.127387][ T406] ? __kmalloc (mm/slub.c:3980) [ 44.127524][ T406] ? fib6_get_table (net/ipv6/ip6_fib.c:295) [ 44.127751][ T406] ip6_route_info_create (net/ipv6/route.c:3808) [ 44.127884][ T406] ? __lock_release (kernel/locking/lockdep.c:5430) [ 44.128024][ T406] ? __pfx_ip6_route_info_create (net/ipv6/route.c:3691) [ 44.128198][ T406] ? addrconf_f6i_alloc (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/l3mdev.h:138 net/ipv6/route.c:4564) [ 44.128415][ T406] addrconf_f6i_alloc (net/ipv6/route.c:4584) [ 44.128550][ T406] ? __pfx_addrconf_f6i_alloc (net/ipv6/route.c:4562) [ 44.128689][ T406] ? do_raw_write_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qrwlock.h:98 kernel/locking/spinlock_debug.c:211) [ 44.128824][ T406] ? __pfx_do_raw_write_lock (kernel/locking/spinlock_debug.c:209) [ 44.129042][ T406] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 44.129178][ T406] __ipv6_dev_ac_inc (net/ipv6/anycast.c:309) [ 44.129316][ T406] addrconf_join_anycast (net/ipv6/addrconf.c:2264) [ 44.129457][ T406] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 44.129560][ T406] ? __pfx_addrconf_join_anycast (net/ipv6/addrconf.c:2256) [ 44.129823][ T406] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 44.129995][ T406] dev_forward_change (./include/linux/list.h:373 net/ipv6/addrconf.c:833) [ 44.130139][ T406] ? __pfx_dev_forward_change (net/ipv6/addrconf.c:803) [ 44.130384][ T406] addrconf_fixup_forwarding (net/ipv6/addrconf.c:854 net/ipv6/addrconf.c:898) [ 44.130524][ T406] addrconf_sysctl_forward (net/ipv6/addrconf.c:6329) [ 44.130670][ T406] ? __pfx_addrconf_sysctl_forward (net/ipv6/addrconf.c:6312) [ 44.130843][ T406] ? __pfx_addrconf_sysctl_forward (net/ipv6/addrconf.c:6312) [ 44.131107][ T406] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) [ 44.131252][ T406] ? __kmalloc_node (mm/slub.c:3974) [ 44.131391][ T406] ? proc_sys_call_handler (fs/proc/proc_sysctl.c:578) [ 44.131528][ T406] proc_sys_call_handler (fs/proc/proc_sysctl.c:595) [ 44.131844][ T406] ? __pfx_proc_sys_call_handler (fs/proc/proc_sysctl.c:550) [ 44.132036][ T406] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 44.132195][ T406] vfs_write (./include/linux/fs.h:2108 fs/read_write.c:497 fs/read_write.c:590) [ 44.132297][ T406] ? do_user_addr_fault (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 ./include/linux/mm.h:700 arch/x86/mm/fault.c:1364) [ 44.132442][ T406] ? __pfx_vfs_write (fs/read_write.c:571) [ 44.132657][ T406] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 44.132800][ T406] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 44.132936][ T406] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 44.133076][ T406] ksys_write (fs/read_write.c:643) [ 44.133267][ T406] ? __pfx_ksys_write (fs/read_write.c:633) [ 44.133407][ T406] ? do_user_addr_fault (./include/linux/rcupdate.h:815 ./include/linux/mm.h:702 arch/x86/mm/fault.c:1364) [ 44.133548][ T406] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 44.133691][ T406] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 44.133952][ T406] RIP: 0033:0x7f4ca56e7957 [ 44.134100][ T406] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 All code ======== 0: 0b 00 or (%rax),%eax 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 b7 jmp 0xffffffffffffffc7 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 01 00 00 00 mov $0x1,%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: 48 89 54 24 18 mov %rdx,0x18(%rsp) 3c: 48 rex.W 3d: 89 .byte 0x89 3e: 74 24 je 0x64 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: 48 89 54 24 18 mov %rdx,0x18(%rsp) 12: 48 rex.W 13: 89 .byte 0x89 14: 74 24 je 0x3a [ 44.134705][ T406] RSP: 002b:00007ffe1a4d2c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 44.134926][ T406] RAX: ffffffffffffffda RBX: 00005644d36a1360 RCX: 00007f4ca56e7957 [ 44.135146][ T406] RDX: 0000000000000002 RSI: 00005644d36a13a0 RDI: 0000000000000005 [ 44.135434][ T406] RBP: 00005644d36a34d0 R08: 0000000000000003 R09: 0000000000000077 [ 44.135642][ T406] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 Finger prints: dump_stack_lvl:print_bad_irq_dependency:check_irq_usage:check_prev_add