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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][SHARDS] igt@gem_tiling_max_stride - dmesg-warn - BUG: kernel NULL pointer dereference, address: 0000000000000019"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111942">111942</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CI][SHARDS] igt@gem_tiling_max_stride - dmesg-warn - BUG: kernel NULL pointer dereference, address: 0000000000000019
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI 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>not set
</td>
</tr>
<tr>
<th>Priority</th>
<td>not set
</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>lakshminarayana.vudum@intel.com
</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/IGT_5215/shard-tglb6/igt@gem_tiling_max_stride.html">https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5215/shard-tglb6/igt@gem_tiling_max_stride.html</a>
<1> [282.114574] BUG: kernel NULL pointer dereference, address:
0000000000000019
<1> [282.114578] #PF: supervisor read access in kernel mode
<1> [282.114581] #PF: error_code(0x0000) - not-present page
<6> [282.114585] PGD 0 P4D 0
<4> [282.114589] Oops: 0000 [#1] PREEMPT SMP NOPTI
<4> [282.114591] CPU: 3 PID: 2296 Comm: kworker/u16:14 Tainted: G U
5.4.0-rc1-CI-CI_DRM_7020+ #1
<4> [282.114594] Hardware name: Intel Corporation Tiger Lake Client
Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.2321.A08.1909162051
09/16/2019
<4> [282.114600] Workqueue: writeback wb_workfn (flush-259:0)
<4> [282.114606] RIP: 0010:__lock_acquire+0x509/0x15d0
<4> [282.114608] Code: 00 45 31 ff 48 8b 7c 24 40 65 48 33 3c 25 28 00 00 00 44
89 f8 0f 85 dd 0f 00 00 48 83 c4 48 5b 5d 41 5c 41 5d 41 5e 41 5f c3 <48> 81 3f
20 8a 83 82 41 bf 00 00 00 00 45 0f 45 f8 83 fe 01 0f 87
<4> [282.114613] RSP: 0018:ffffc9000061bc68 EFLAGS: 00010002
<4> [282.114628] RAX: 0000000000000000 RBX: 0000000000000019 RCX:
0000000000000000
<4> [282.114629] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000019
<4> [282.114631] RBP: 0000000000000000 R08: 0000000000000001 R09:
0000000000000001
<4> [282.114633] R10: 0000000000000000 R11: 0000000000000019 R12:
0000000000000000
<4> [282.114635] R13: 0000000000000000 R14: ffff88848d014040 R15:
0000000000000001
<4> [282.114636] FS: 0000000000000000(0000) GS:ffff8884a0580000(0000)
knlGS:0000000000000000
<4> [282.114639] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [282.114640] CR2: 0000000000000019 CR3: 0000000005210003 CR4:
0000000000760ee0
<4> [282.114642] PKRU: 55555554
<4> [282.114643] Call Trace:
<4> [282.114646] ? mark_held_locks+0x49/0x70
<4> [282.114649] ? trace_hardirqs_on_thunk+0x1a/0x20
<4> [282.114660] ? lockdep_hardirqs_on+0xe3/0x1c0
<4> [282.114662] lock_acquire+0xa7/0x1c0
<4> [282.114665] ? __wake_up_common_lock+0x5c/0xb0
<4> [282.114671] ? retint_kernel+0x2b/0x2b
<4> [282.114673] _raw_spin_lock_irqsave+0x33/0x50
<4> [282.114675] ? __wake_up_common_lock+0x5c/0xb0
<4> [282.114677] __wake_up_common_lock+0x5c/0xb0
<4> [282.114679] wb_workfn+0xaa/0x5d0
<4> [282.114683] ? process_one_work+0x1de/0x620
<4> [282.114685] process_one_work+0x26a/0x620
<4> [282.114689] worker_thread+0x37/0x380
<4> [282.114691] ? process_one_work+0x620/0x620
<4> [282.114694] kthread+0x119/0x130
<4> [282.114695] ? kthread_park+0x80/0x80
<4> [282.114697] ret_from_fork+0x24/0x50
<4> [282.114699] Modules linked in: vgem i915 mei_hdcp x86_pkg_temp_thermal
coretemp crct10dif_pclmul ax88179_178a crc32_pclmul usbnet mii
ghash_clmulni_intel mei_me mei prime_numbers
<0> [282.114709] Dumping ftrace buffer:
<0> [282.114717] ---------------------------------
<0> [282.114918] CPU:7 [LOST 21215 EVENTS]</pre>
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