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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@drv_suspend@debugfs-reader - WARNING: CPU: 0 PID: 191 at lib/debugobjects.c:339 debug_print_object"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106216">106216</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CI] igt@drv_suspend@debugfs-reader - WARNING: CPU: 0 PID: 191 at lib/debugobjects.c:339 debug_print_object
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>martin.peres@free.fr
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_25/fi-bsw-n3050/igt@drv_suspend@debugfs-reader.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_25/fi-bsw-n3050/igt@drv_suspend@debugfs-reader.html</a>
<4>[ 14.823938] R13: ffffffffa9115b80 R14: ffff939dc574d000 R15:
dead000000000100
<4>[ 14.824025] FS: 00007fc828046680(0000) GS:ffff90497fc00000(0000)
knlGS:0000000000000000
<4>[ 14.824121] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 14.824193] CR2: 00007ffd38be6f28 CR3: 0000000175ada000 CR4:
00000000001006f0
<4>[ 14.824279] Call Trace:
<4>[ 14.824318] ? trace_hardirqs_on_thunk+0x1a/0x1c
<4>[ 14.824385] ? lock_acquire+0xa6/0x210
<4>[ 14.824438] ? debug_check_no_obj_freed+0xa4/0x210
<4>[ 14.824506] debug_check_no_obj_freed+0x194/0x210
<4>[ 14.824574] __vunmap+0xab/0x100
<4>[ 14.824621] load_module+0x2e2/0x2b20
<4>[ 14.824677] ? vfs_read+0x122/0x140
<4>[ 14.824727] ? kernel_read+0x27/0x40
<4>[ 14.824776] ? kernel_read_file+0xee/0x180
<4>[ 14.824836] ? __se_sys_finit_module+0xd3/0xf0
<4>[ 14.824894] __se_sys_finit_module+0xd3/0xf0
<4>[ 14.824958] do_syscall_64+0x55/0x190
<4>[ 14.825009] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 14.825074] RIP: 0033:0x7fc827b70839
<4>[ 14.825122] RSP: 002b:00007ffdc72700d8 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
<4>[ 14.825216] RAX: ffffffffffffffda RBX: 0000556090c58be0 RCX:
00007fc827b70839
<4>[ 14.825303] RDX: 0000000000000000 RSI: 00007fc82784f0e5 RDI:
000000000000000f
<4>[ 14.825389] RBP: 00007fc82784f0e5 R08: 0000000000000000 R09:
00007ffdc72701f0
<4>[ 14.825476] R10: 000000000000000f R11: 0000000000000246 R12:
0000000000000000
<4>[ 14.825561] R13: 0000556090c44a70 R14: 0000000000020000 R15:
0000556090c58be0
<4>[ 14.825656] Code: 02 01 e8 2d 38 05 00 8b 43 10 4d 89 e9 4c 89 e6 8b 4b
14 4c 8b 45 00 48 c7 c7 b8 72 0a aa 48 8b 14 c5 60 44 e4 a9 e8 89 76 bf ff <0f>
0b 48 c7 c7 f8 72 0a aa e8 64 ce c6 ff be 02 00 00 00 48 89
<4>[ 14.825980] irq event stamp: 237344
<4>[ 14.826028] hardirqs last enabled at (237343): [<ffffffffa994756c>]
_raw_spin_unlock_irqrestore+0x4c/0x60
<4>[ 14.826144] hardirqs last disabled at (237344): [<ffffffffa99473dd>]
_raw_spin_lock_irqsave+0xd/0x50
<4>[ 14.826254] softirqs last enabled at (236608): [<ffffffffa9c0032b>]
__do_softirq+0x32b/0x4e1
<4>[ 14.826358] softirqs last disabled at (236589): [<ffffffffa908f594>]
irq_exit+0xa4/0xb0
<4>[ 14.826454] WARNING: CPU: 0 PID: 191 at lib/debugobjects.c:339
debug_print_object+0xd7/0x100
<4>[ 14.826556] ---[ end trace 15bac3dd9b505041 ]---
<3>[ 14.826614] ODEBUG: ODEBUG: debug object originally initialized at:
<4>[ 14.826695] schedule_timeout+0x76/0x540
<4>[ 14.826749] msleep+0x33/0x40
<4>[ 14.826804] alc283_init+0xf1/0x120 [snd_hda_codec_realtek]
<4>[ 14.826883] alc_init+0x1f/0x580 [snd_hda_codec_realtek]
<4>[ 14.826964] snd_hda_codec_build_controls+0x32/0x200 [snd_hda_codec]
<4>[ 14.830705] hda_codec_driver_probe+0xc1/0x100 [snd_hda_codec]
<4>[ 14.834468] driver_probe_device+0x306/0x480
<4>[ 14.838229] __driver_attach+0xb7/0xe0
<7>[ 14.841891] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus panel] NAK for
addr: 0040 w(1)
<4>[ 14.841980] bus_for_each_dev+0x74/0xc0
<4>[ 14.841986] bus_add_driver+0x15f/0x250
<7>[ 14.845994] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus panel] NAK on
first message, retry
<4>[ 14.849812] driver_register+0x52/0xc0
<4>[ 14.849815] do_one_initcall+0x58/0x370
<4>[ 14.849818] do_init_module+0x56/0x1ea
<4>[ 14.849820] load_module+0x2435/0x2b20
<4>[ 14.849825] __se_sys_finit_module+0xd3/0xf0
<7>[ 14.869150] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus panel] NAK for
addr: 0040 w(1)
<7>[ 14.869163] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID: (err -6)
<4>[ 14.872993] do_syscall_64+0x55/0x190
<4>[ 14.872996] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 14.873001]
<4>[ 14.873002] ============================================
<4>[ 14.873003] WARNING: possible recursive locking detected
<4>[ 14.873004] 4.17.0-rc1-gb463d8719fbd-drmtip_25+ #1 Not tainted
<4>[ 14.873005] --------------------------------------------
<4>[ 14.873006] systemd-udevd/191 is trying to acquire lock:
<4>[ 14.873007] 000000007e183d4e (&obj_hash[i].lock){-.-.}, at:
debug_object_activate+0xb1/0x240
<4>[ 14.873015]
<4>[ 14.873015] but task is already holding lock:
<4>[ 14.873016] 000000004e1b65db (&obj_hash[i].lock){-.-.}, at:
debug_check_no_obj_freed+0xa4/0x210
<4>[ 14.873019]
<4>[ 14.873020] other info that might help us debug this:
<4>[ 14.873021] Possible unsafe locking scenario:
<4>[ 14.873022]
<4>[ 14.873022] CPU0
<4>[ 14.873023] ----
<4>[ 14.873024] lock(&obj_hash[i].lock);
<4>[ 14.873026] lock(&obj_hash[i].lock);
<4>[ 14.873027]
<4>[ 14.873028] *** DEADLOCK ***
<4>[ 14.873029]
<4>[ 14.873030] May be due to missing lock nesting notation
<4>[ 14.873030]
<4>[ 14.873031] 4 locks held by systemd-udevd/191:
<4>[ 14.873032] #0: 000000004e1b65db (&obj_hash[i].lock){-.-.}, at:
debug_check_no_obj_freed+0xa4/0x210
<4>[ 14.873035] #1: 0000000025454144 (console_lock){+.+.}, at:
vprintk_emit+0x22e/0x4d0
<4>[ 14.873039] #2: 0000000095423f07 (console_owner){-...}, at:
console_unlock+0x150/0x640
<4>[ 14.873043] #3: 0000000001232d4c (printing_lock){....}, at:
vt_console_print+0x73/0x410
<4>[ 14.873046]
<4>[ 14.873047] stack backtrace:
<4>[ 14.873048] CPU: 0 PID: 191 Comm: systemd-udevd Not tainted
4.17.0-rc1-gb463d8719fbd-drmtip_25+ #1
<4>[ 14.873050] Hardware name: /NUC5CPYB, BIOS
PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
<4>[ 14.873050] Call Trace:
<4>[ 14.873051] dump_stack+0x67/0x9b
<4>[ 14.873052] __lock_acquire+0xc67/0x1b50
<4>[ 14.873053] ? __kernel_text_address+0x9/0x30
<4>[ 14.873053] ? lockdep_on+0x20/0x20
<4>[ 14.873054] ? lock_acquire+0xa6/0x210
<4>[ 14.873055] lock_acquire+0xa6/0x210
<4>[ 14.873056] ? debug_object_activate+0xb1/0x240
<4>[ 14.873057] _raw_spin_lock_irqsave+0x33/0x50
<4>[ 14.873057] ? debug_object_activate+0xb1/0x240
<4>[ 14.873058] debug_object_activate+0xb1/0x240
<4>[ 14.873059] ? __queue_work+0x4a/0x610
<4>[ 14.873060] __queue_work+0x4a/0x610
<4>[ 14.873061] queue_work_on+0x60/0x70
<4>[ 14.873061] soft_cursor+0x1f4/0x220
<4>[ 14.873062] bit_cursor+0x51d/0x5e0
<4>[ 14.873063] ? update_attr.isra.0+0x80/0x80
<4>[ 14.873064] ? fbcon_cursor+0x123/0x1a0
<4>[ 14.873064] hide_cursor+0x25/0xa0
<4>[ 14.873065] vt_console_print+0x3fc/0x410
<4>[ 14.873066] console_unlock+0x43b/0x640
<4>[ 14.873067] vprintk_emit+0x23b/0x4d0
<4>[ 14.873068] ? collect_expired_timers+0xa0/0xa0
<4>[ 14.873068] __warn_printk+0x65/0x90
<4>[ 14.873069] ? collect_expired_timers+0xa0/0xa0
<4>[ 14.873070] debug_print_object+0xd7/0x100
<4>[ 14.873071] ? trace_hardirqs_on_thunk+0x1a/0x1c
<4>[ 14.873072] ? lock_acquire+0xa6/0x210
<4>[ 14.873073] ? debug_check_no_obj_freed+0xa4/0x210
<4>[ 14.873073] debug_check_no_obj_freed+0x194/0x210
<4>[ 14.873074] __vunmap+0xab/0x100
<4>[ 14.873075] load_module+0x2e2/0x2b20
<4>[ 14.873076] ? vfs_read+0x122/0x140
<4>[ 14.873077] ? kernel_read+0x27/0x40
<4>[ 14.873077] ? kernel_read_file+0xee/0x180
<4>[ 14.873078] ? __se_sys_finit_module+0xd3/0xf0
<4>[ 14.873079] __se_sys_finit_module+0xd3/0xf0
<4>[ 14.873080] do_syscall_64+0x55/0x190
<4>[ 14.873081] entry_SYSCALL_64_after_hwframe+0x49/0xbe</pre>
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