[    2.271078] Testing tracer preemptirqsoff: .. no entries found ..FAILED!
[    2.381015] WARNING: CPU: 0 PID: 1 at /home/mhiramat/ksrc/linux/kernel/trace/trace.c:1512 run_tracer_selftest+0xf3/0x154
[    2.382000] Modules linked in:
[    2.382000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.18.0-rc6+ #15
[    2.382000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1.fc26 04/01/2014
[    2.382000] RIP: 0010:run_tracer_selftest+0xf3/0x154
[    2.382000] Code: 43 60 48 c7 c6 40 f8 07 82 48 89 df e8 9a 5a 8b 00 85 c0 89 c5 4c 89 25 5f 38 f3 00 74 13 48 c7 c7 42 17 de 81 e8 ff 1e f7 ff <0f> 0b 83 cd ff eb 4c 48 c7 c7 58 f8 07 82 e8 4e a0 ff ff 80 bb a2 
[    2.382000] RSP: 0000:ffffc900000d3e68 EFLAGS: 00010286
[    2.382000] RAX: 0000000000000007 RBX: ffffffff82120a60 RCX: 0000000000000000
[    2.382000] RDX: 0000000000000000 RSI: ffffffff810bea4f RDI: ffffffff810bea4f
[    2.382000] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
[    2.382000] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82120fa0
[    2.382000] R13: 0000000000000002 R14: ffffffff823fe81d R15: 0000000000000000
[    2.382000] FS:  0000000000000000(0000) GS:ffff88001f600000(0000) knlGS:0000000000000000
[    2.382000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.382000] CR2: 0000000000000000 CR3: 000000000201e000 CR4: 00000000000006b0
[    2.382000] Call Trace:
[    2.382000]  register_tracer+0x11b/0x1d1
[    2.382000]  ? trace_event_define_fields_preemptirq_template+0x55/0x55
[    2.382000]  init_irqsoff_tracer+0x24/0x27
[    2.382000]  do_one_initcall+0x5d/0x2f0
[    2.382000]  ? set_debug_rodata+0x11/0x11
[    2.382000]  ? rcu_read_lock_sched_held+0x6b/0x80
[    2.382000]  kernel_init_freeable+0x200/0x28c
[    2.382000]  ? rest_init+0xd0/0xd0
[    2.382000]  kernel_init+0xa/0x110
[    2.382000]  ret_from_fork+0x3a/0x50
[    2.382000] irq event stamp: 604926
[    2.382000] hardirqs last  enabled at (604925): [<0000000000000000>]           (null)
[    2.382000] hardirqs last disabled at (604926): [<ffffffff8180115f>] error_entry+0x7f/0x100
[    2.382000] softirqs last  enabled at (604922): [<ffffffff81a00370>] __do_softirq+0x370/0x460
[    2.382000] softirqs last disabled at (604915): [<ffffffff81062781>] irq_exit+0xc1/0xd0
[    2.382000] ---[ end trace ee62aecc90f6b764 ]---