====================================== | [ 1273.945678][ T11] | [ 1273.949917][ T11] ------------[ cut here ]------------ | [ 1273.950266][ T11] WARNING: CPU: 1 PID: 11 at lib/ref_tracker.c:179 ref_tracker_dir_exit (lib/ref_tracker.c:179) | [ 1273.950855][ T11] Modules linked in: geneve vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim] [ 1273.951819][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1273.952496][ T11] Workqueue: netns cleanup_net [ 1273.952781][ T11] RIP: 0010:ref_tracker_dir_exit (lib/ref_tracker.c:179) [ 1273.953111][ T11] Code: 38 00 0f 85 58 02 00 00 49 8b 04 24 4d 89 e6 4c 39 e5 0f 85 2a ff ff ff 48 8b 1c 24 48 8b 74 24 10 48 89 df e8 a9 11 88 01 90 <0f> 0b 90 48 8d 6b 4c be 04 00 00 00 48 89 ef e8 94 c2 95 ff 48 89 All code ======== 0: 38 00 cmp %al,(%rax) 2: 0f 85 58 02 00 00 jne 0x260 8: 49 8b 04 24 mov (%r12),%rax c: 4d 89 e6 mov %r12,%r14 f: 4c 39 e5 cmp %r12,%rbp 12: 0f 85 2a ff ff ff jne 0xffffffffffffff42 18: 48 8b 1c 24 mov (%rsp),%rbx 1c: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 21: 48 89 df mov %rbx,%rdi 24: e8 a9 11 88 01 call 0x18811d2 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 48 8d 6b 4c lea 0x4c(%rbx),%rbp 31: be 04 00 00 00 mov $0x4,%esi 36: 48 89 ef mov %rbp,%rdi 39: e8 94 c2 95 ff call 0xffffffffff95c2d2 3e: 48 rex.W 3f: 89 .byte 0x89 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 48 8d 6b 4c lea 0x4c(%rbx),%rbp 7: be 04 00 00 00 mov $0x4,%esi c: 48 89 ef mov %rbp,%rdi f: e8 94 c2 95 ff call 0xffffffffff95c2a8 14: 48 rex.W 15: 89 .byte 0x89 [ 1273.954166][ T11] RSP: 0018:ffffc900000bfb60 EFLAGS: 00010286 [ 1273.954496][ T11] RAX: 0000000000000002 RBX: ffff888021cd9978 RCX: 1ffffffff2f9157d [ 1273.954919][ T11] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff94867ef1 [ 1273.955327][ T11] RBP: ffff888021cd99d0 R08: 0000000000000001 R09: fffffbfff2f89687 [ 1273.955765][ T11] R10: ffffffff97c4b43f R11: ffffffff9293f1b4 R12: ffff888021cd99d0 [ 1273.956197][ T11] R13: dead000000000100 R14: ffff888021cd99d0 R15: dffffc0000000000 [ 1273.956653][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 1273.957147][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1273.957517][ T11] CR2: 00007f092bd870e0 CR3: 0000000020720006 CR4: 0000000000770ef0 [ 1273.957957][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1273.958379][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 make: Leaving di[ 1273.958794][ T11] PKRU: 55555554 rectory '/home/virtme/testing-14/tools/testing/selftests' [ 1273.959435][ T11] Call Trace: [ 1273.959612][ T11] [ 1273.959769][ T11] ? __warn (kernel/panic.c:677) [ 1273.960000][ T11] ? ref_tracker_dir_exit (lib/ref_tracker.c:179) [ 1273.960291][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1273.960550][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1273.960788][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1273.961048][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1273.961317][ T11] ? kasan_save_track (./arch/x86/include/asm/current.h:42 mm/kasan/common.c:60 mm/kasan/common.c:70) [ 1273.961595][ T11] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 1273.961901][ T11] ? ref_tracker_dir_exit (lib/ref_tracker.c:179) [ 1273.962199][ T11] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:158) [ 1273.962533][ T11] ? kfree (mm/slub.c:4299 mm/slub.c:4409) [ 1273.962751][ T11] net_free (net/core/net_namespace.c:464 net/core/net_namespace.c:456) [ 1273.962984][ T11] cleanup_net (net/core/net_namespace.c:651) [ 1273.963247][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1273.963577][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1273.963864][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1273.964132][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1273.964448][ T11] process_one_work (kernel/workqueue.c:2633) [ 1273.964744][ T11] ? 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) [ 1273.965007][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1273.965322][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1273.965609][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1273.965893][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1273.966161][ T11] kthread (kernel/kthread.c:388) [ 1273.966391][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1273.966638][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 1273.966883][ T11] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: ref_tracker_dir_exit:net_free:cleanup_net:process_one_work