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Message-ID: <20171226051913.GE3172@yexl-desktop>
Date:   Tue, 26 Dec 2017 13:19:13 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Chris Wilson <chris@...is-wilson.co.uk>
Cc:     Daniel Vetter <daniel.vetter@...ll.ch>,
        Davidlohr Bueso <dbueso@...e.de>,
        Jérôme Glisse <jglisse@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        lkp@...org
Subject: [lkp-robot] [lib/rbtree,drm/mm]  adc8732ba8:
 WARNING:at_lib/stackdepot.c:#depot_save_stack


FYI, we noticed the following commit (built with gcc-7):

commit: adc8732ba8dc55ea7dd226a2edc59a8ef57478cf ("lib/rbtree,drm/mm: Add rbtree_replace_node_cached()")
git://anongit.freedesktop.org/drm-intel topic/core-for-CI

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -m 420M

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


+-------------------------------------------------------+------------+------------+
|                                                       | 64c8972077 | adc8732ba8 |
+-------------------------------------------------------+------------+------------+
| boot_successes                                        | 50         | 2          |
| boot_failures                                         | 4          | 58         |
| WARNING:possible_circular_locking_dependency_detected | 3          |            |
| BUG:kernel_in_stage                                   | 1          |            |
| WARNING:at_lib/stackdepot.c:#depot_save_stack         | 0          | 19         |
| RIP:depot_save_stack                                  | 0          | 19         |
| BUG:kernel_hang_in_boot_stage                         | 0          | 42         |
+-------------------------------------------------------+------------+------------+



[  204.261001] WARNING: CPU: 0 PID: 1 at lib/stackdepot.c:119 depot_save_stack+0x275/0x490
[  204.262751] Modules linked in:
[  204.263130] CPU: 0 PID: 1 Comm: swapper Not tainted 4.15.0-rc3-00005-gadc8732 #2
[  204.263990] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[  204.264007] RIP: 0010:depot_save_stack+0x275/0x490
[  204.264007] RSP: 0000:ffff88000018b9d0 EFLAGS: 00010082
[  204.264007] RAX: 0000000000000022 RBX: 00000000d053170d RCX: ffffffff810cc732
[  204.264007] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff810ca57c
[  204.264007] RBP: ffff88000018ba40 R08: 0000000000000001 R09: 00000000000020f1
[  204.264007] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000120
[  204.264007] R13: 0000000000000020 R14: 0000000000000020 R15: 0000000000000000
[  204.264007] FS:  0000000000000000(0000) GS:ffffffff8222c000(0000) knlGS:0000000000000000
[  204.264007] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  204.264007] CR2: 0000000000000000 CR3: 0000000002216000 CR4: 00000000000006b0
[  204.264007] Call Trace:
[  204.264007]  ? save_stack+0x74/0x90
[  204.264007]  ? drm_mm_interval_tree_augment_rotate+0x61/0x70
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_augment_rotate+0x61/0x70
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_augment_rotate+0x61/0x70
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_augment_rotate+0x61/0x70
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_add_node+0x103/0x160
[  204.264007]  ? drm_mm_interval_tree_augment_rotate+0x61/0x70
[  204.264007]  ? drm_mm_interval_tree_augment_rotate+0x61/0x70
[  204.264007]  ? drm_mm_interval_tree_augment_rotate+0x61/0x70
[  204.264007]  ? add_hole+0x148/0x180
[  204.264007]  ? drm_mm_reserve_node+0x1a0/0x230
[  204.264007]  ? evict_something+0x1b4/0x320
[  204.264007]  ? igt_evict_range+0x1dc/0x450
[  204.264007]  ? test_drm_mm_init+0x1fa/0x2a0
[  204.264007]  ? drm_fb_helper_modinit+0x37/0x37
[  204.264007]  ? do_one_initcall+0x57/0x1e0
[  204.264007]  ? drm_mm_reserve_node+0x1a0/0x230
[  204.264007]  ? evict_something+0x1b4/0x320
[  204.264007]  ? igt_evict_range+0x1dc/0x450
[  204.264007]  ? test_drm_mm_init+0x1fa/0x2a0
[  204.264007]  ? drm_fb_helper_modinit+0x37/0x37
[  204.264007]  ? do_one_initcall+0x57/0x1e0
[  204.264007]  ? kernel_init_freeable+0x19f/0x2ca
[  204.264007]  ? rest_init+0x140/0x140
[  204.264007]  ? kernel_init+0xf/0x160
[  204.264007]  ? rest_init+0x140/0x140
[  204.264007]  ? rest_init+0x140/0x140
[  204.264007]  ? ret_from_fork+0x24/0x30
[  204.264007] Code: c7 60 d2 25 82 e8 8c 68 72 00 e9 d8 fe ff ff 80 3d 5f 52 01 01 00 75 15 48 c7 c7 78 26 f3 81 c6 05 4f 52 01 01 01 e8 cb 2e da ff <0f> ff 48 8b 74 24 08 48 c7 c7 60 d2 25 82 e8 58 68 72 00 48 8b 
[  204.264007] ---[ end trace 871fab89c23acd90 ]---


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-4.15.0-rc3-00005-gadc8732" of type "text/plain" (100034 bytes)

View attachment "job-script" of type "text/plain" (4275 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (10520 bytes)

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