====================================== | [ 33.088084][ T335] #0: ffffffffab3b8890 (pernet_ops_rwsem){+.+.}-{3:3}, at: rtnl_link_unregister (net/core/rtnetlink.c:678 net/core/rtnetlink.c:701) | [ 33.088389][ T335] #1: ffffffffab3d4908 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 net/core/rtnetlink.c:684 net/core/rtnetlink.c:701) | [ 33.088657][ T335] | [ 33.088657][ T335] stack backtrace: [ 33.089067][ T335] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 33.089418][ T335] Call Trace: [ 33.089537][ T335] [ 33.089616][ T335] dump_stack_lvl (lib/dump_stack.c:123) [ 33.089775][ T335] print_circular_bug (kernel/locking/lockdep.c:2077) [ 33.089929][ T335] check_noncircular (kernel/locking/lockdep.c:2206) [ 33.090084][ T335] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2182) [ 33.090235][ T335] ? __kernel_text_address (kernel/extable.c:79) [ 33.090393][ T335] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 33.090548][ T335] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 33.090736][ T335] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 33.090888][ T335] ? alloc_chain_hlocks (kernel/locking/lockdep.c:3528) [ 33.091042][ T335] check_prev_add (kernel/locking/lockdep.c:3162) [ 33.091195][ T335] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 33.091347][ T335] validate_chain (kernel/locking/lockdep.c:3281 kernel/locking/lockdep.c:3904) [ 33.091501][ T335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 33.091655][ T335] ? mark_lock (kernel/locking/lockdep.c:186 kernel/locking/lockdep.c:4731) [ 33.091807][ T335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 33.091960][ T335] __lock_acquire (kernel/locking/lockdep.c:5202) [ 33.092115][ T335] lock_sync (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5876) [ 33.092230][ T335] ? __synchronize_srcu (kernel/rcu/srcutree.c:1383) [ 33.092384][ T335] __synchronize_srcu (kernel/rcu/srcutree.c:1388) [ 33.092537][ T335] ? __pfx___synchronize_srcu (kernel/rcu/srcutree.c:1383) [ 33.092689][ T335] ? 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) [ 33.092848][ T335] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 33.092965][ T335] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 33.093121][ T335] ? ktime_get_mono_fast_ns (kernel/time/timekeeping.c:195 kernel/time/timekeeping.c:395 kernel/time/timekeeping.c:449 kernel/time/timekeeping.c:489) [ 33.093274][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 33.093467][ T335] __rtnl_link_unregister (net/core/rtnetlink.c:664) [ 33.093618][ T335] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 33.093735][ T335] ? __pfx___rtnl_link_unregister (net/core/rtnetlink.c:659) [ 33.093922][ T335] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 33.094080][ T335] rtnl_link_unregister (net/core/rtnetlink.c:152 net/core/rtnetlink.c:703) [ 33.094232][ T335] ? __pfx_rtnl_link_unregister (net/core/rtnetlink.c:698) [ 33.094385][ T335] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 33.094542][ T335] geneve_cleanup_module (drivers/net/geneve.c:1059) geneve [ 33.094736][ T335] __do_sys_delete_module (kernel/module/main.c:757) [ 33.094888][ T335] ? __pfx___do_sys_delete_module (kernel/module/main.c:702) [ 33.095086][ T335] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) [ 33.095283][ T335] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) [ 33.095472][ T335] ? trace_rcu_segcb_stats (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:570 ./include/linux/cpumask.h:1117 ./include/trace/events/rcu.h:537) [ 33.095627][ T335] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) [ 33.095820][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 33.096010][ T335] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 33.096164][ T335] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 33.096354][ T335] RIP: 0033:0x7efe59aa25ab [ 33.096511][ T335] Code: 73 01 c3 48 8b 0d 55 98 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 25 98 1b 00 f7 d8 64 89 01 48 All code ======== 0: 73 01 jae 0x3 2: c3 ret 3: 48 8b 0d 55 98 1b 00 mov 0x1b9855(%rip),%rcx # 0x1b985f a: f7 d8 neg %eax c: 64 89 01 mov %eax,%fs:(%rcx) f: 48 83 c8 ff or $0xffffffffffffffff,%rax 13: c3 ret 14: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 1b: 00 00 00 1e: 90 nop 1f: f3 0f 1e fa endbr64 23: b8 b0 00 00 00 mov $0xb0,%eax 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 8b 0d 25 98 1b 00 mov 0x1b9825(%rip),%rcx # 0x1b985f 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 73 01 jae 0x9 8: c3 ret 9: 48 8b 0d 25 98 1b 00 mov 0x1b9825(%rip),%rcx # 0x1b9835 10: f7 d8 neg %eax 12: 64 89 01 mov %eax,%fs:(%rcx) 15: 48 rex.W [ 33.097050][ T335] RSP: 002b:00007ffc6bb5c4b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 33.097281][ T335] RAX: ffffffffffffffda RBX: 000055edbc650980 RCX: 00007efe59aa25ab [ 33.097506][ T335] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055edbc6509e8 [ 33.097734][ T335] RBP: 000055edbc650980 R08: 0000000000000000 R09: 0000000000000000 [ 33.097963][ T335] R10: 00007efe59c01ac0 R11: 0000000000000206 R12: 000055edbc6509e8 Finger prints: print_circular_bug:check_noncircular:check_prev_add:validate_chain:__lock_acquire