linux-kernel - [lkp-robot] [lib/rbtree] c21f87074d: WARNING:at_kernel/events/core.c:#perf_swevent

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Date:   Fri, 17 Nov 2017 10:26:27 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Davidlohr Bueso <dbueso@...e.de>,
        Fengguang Wu <fengguang.wu@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp-robot] [lib/rbtree]  c21f87074d:
 WARNING:at_kernel/events/core.c:#perf_swevent_add


FYI, we noticed the following commit (built with gcc-6):

commit: c21f87074dc24c9e5a13dc63918b2d30891d190f ("lib/rbtree-test: lower default params")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -smp 2 -m 512M

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+---------------------------------------------------+------------+------------+
|                                                   | ced2d43150 | c21f87074d |
+---------------------------------------------------+------------+------------+
| boot_successes                                    | 3          | 2          |
| boot_failures                                     | 13         | 14         |
| BUG:kernel_hang_in_test_stage                     | 13         | 14         |
| WARNING:at_kernel/events/core.c:#perf_swevent_add | 0          | 14         |
| RIP:perf_swevent_add                              | 0          | 14         |
+---------------------------------------------------+------------+------------+



[   14.436079] WARNING: CPU: 0 PID: 412 at kernel/events/core.c:7735 perf_swevent_add+0x90/0xe0
[   14.437206] Modules linked in:
[   14.437548] CPU: 0 PID: 412 Comm: trinity-main Not tainted 4.14.0-rc8-00303-gc21f870 #2
[   14.438407] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[   14.439350] task: ffff88001c554fc0 task.stack: ffff88001ef30000
[   14.440006] RIP: 0010:perf_swevent_add+0x90/0xe0
[   14.440546] RSP: 0018:ffff88001ef33c28 EFLAGS: 00010096
[   14.441095] RAX: 00000000ffffffff RBX: ffff88001e00d3d8 RCX: 0000000000000002
[   14.441876] RDX: ffff88001c554fc0 RSI: 0000000000000001 RDI: ffff88001e00d3d8
[   14.442652] RBP: 0000000000000009 R08: 00000004e4fe313d R09: 0000000098260c66
[   14.443429] R10: ffff88001ef33c58 R11: 0000000000000002 R12: 0000000000000000
[   14.444187] R13: 0000000000000000 R14: 0000000000000001 R15: ffff88001ed7b508
[   14.444931] FS:  00007ff942e15700(0000) GS:ffffffff81c29000(0000) knlGS:0000000000000000
[   14.445780] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   14.446404] CR2: 0000000001697a28 CR3: 000000001dfbb000 CR4: 00000000000006b0
[   14.447158] Call Trace:
[   14.447468]  event_sched_in+0xee/0x240
[   14.447884]  group_sched_in+0x5f/0x1a0
[   14.448298]  ctx_sched_in+0x363/0x3ca
[   14.448758]  perf_event_sched_in+0x66/0x6d
[   14.449314]  ctx_resched+0x9d/0xaf
[   14.449716]  __perf_install_in_context+0x104/0x137
[   14.450225]  remote_function+0x1e/0x43
[   14.450710]  ? rb_free_rcu+0x13/0x13
[   14.451109]  smp_call_function_single+0x39/0x4a
[   14.451644]  ? __perf_event_enable+0x182/0x182
[   14.452111]  task_function_call+0x57/0x95
[   14.452605]  ? __perf_event_enable+0x182/0x182
[   14.453094]  perf_install_in_context+0xbe/0x128
[   14.453580]  SyS_perf_event_open+0xea0/0x11bf
[   14.454050]  entry_SYSCALL_64_fastpath+0x1e/0xad
[   14.454606] RIP: 0033:0x7ff94292a6d9
[   14.455002] RSP: 002b:00007ffdb9512bb8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[   14.455852] RAX: ffffffffffffffda RBX: 0000000001695a20 RCX: 00007ff94292a6d9
[   14.456618] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000000141c000
[   14.457378] RBP: 0000000000002011 R08: 0000000000000003 R09: 0000000000000004
[   14.458121] R10: ffffffffffffffff R11: 0000000000000246 R12: 00000000000225f1
[   14.458919] R13: 0000000000002000 R14: 0000000001695a10 R15: 00000000000005f0
[   14.459751] Code: 89 ed 49 bc eb 83 b5 80 46 86 c8 61 4c 09 f5 49 0f af ec e8 41 a0 fe ff 48 c1 ed 38 4d 8d 64 ed 00 4d 85 e4 75 0e e8 2e a0 fe ff <0f> ff bb ea ff ff ff eb 37 e8 20 a0 fe ff 49 8b 6c ed 00 4c 8d 
[   14.461842] ---[ end trace 43d85185818af4ed ]---


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.14.0-rc8-00303-gc21f870" of type "text/plain" (117576 bytes)

View attachment "job-script" of type "text/plain" (4083 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (13620 bytes)