Bug 112348

Summary:	[CI][SHARDS]igt@gem_ctx_create@basic-files - dmesg-warn - BUG kmalloc-8k (Tainted:.*): Redzone overwritten
Product:	DRI	Reporter:	Lakshmi <lakshminarayana.vudum>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	RESOLVED MOVED	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	not set
Priority:	not set	CC:	intel-gfx-bugs
Version:	DRI git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:	ICL	i915 features:

Description Lakshmi 2019-11-20 09:00:13 UTC

https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_3726/shard-iclb7/igt@gem_ctx_create@basic-files.html
6> [93.168450] Console: switching to colour dummy device 80x25
<6> [93.168495] [IGT] gem_ctx_create: executing
<5> [93.175965] Setting dangerous option reset - tainting kernel
<6> [93.178647] [IGT] gem_ctx_create: starting subtest basic-files
<7> [95.689107] [drm:edp_panel_vdd_off_sync [i915]] Turning [ENCODER:214:DDI A] VDD off
<7> [95.689302] [drm:edp_panel_vdd_off_sync [i915]] PP_STATUS: 0x80000008 PP_CONTROL: 0x00000067
<7> [95.689340] [drm:intel_power_well_disable [i915]] disabling DC off
<7> [95.689383] [drm:skl_enable_dc6 [i915]] Enabling DC6
<7> [95.689420] [drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 02
<3> [98.786793] =============================================================================
<3> [98.786936] BUG kmalloc-8k (Tainted: G     U           ): Redzone overwritten
<3> [98.786953] -----------------------------------------------------------------------------

<4> [98.786974] Disabling lock debugging due to kernel taint
<3> [98.786976] INFO: 0x00000000cd9c7f25-0x00000000d09cd61d. First byte 0x0 instead of 0xcc
<3> [98.787024] INFO: Allocated in __alloc_pd+0xb/0x30 [i915] age=4300 cpu=6 pid=1127
<3> [98.787032] 	__slab_alloc.isra.84.constprop.89+0x3d/0x70
<3> [98.787036] 	__kmalloc+0x2b1/0x320
<3> [98.787073] 	__alloc_pd+0xb/0x30 [i915]
<3> [98.787109] 	alloc_pd+0x16/0x50 [i915]
<3> [98.787142] 	__gen8_ppgtt_alloc+0x436/0x690 [i915]
<3> [98.787176] 	__gen8_ppgtt_alloc+0x2eb/0x690 [i915]
<3> [98.787209] 	gen8_ppgtt_alloc+0xc1/0x270 [i915]
<3> [98.787241] 	ppgtt_bind_vma+0x2a/0xc0 [i915]
<3> [98.787274] 	__vma_bind+0x26/0xc0 [i915]
<3> [98.787300] 	fence_work+0x1c/0x80 [i915]
<3> [98.787305] 	process_one_work+0x26a/0x620
<3> [98.787308] 	worker_thread+0x37/0x380
<3> [98.787313] 	kthread+0x119/0x130
<3> [98.787317] 	ret_from_fork+0x24/0x50
<3> [98.787321] INFO: Slab 0x00000000b858867f objects=1 used=1 fp=0x000000006053eb3c flags=0x8000000000010201
<3> [98.787328] INFO: Object 0x0000000086fb50a4 @offset=8192 fp=0x000000006053eb3c

Comment 1 CI Bug Log 2019-11-20 09:01:51 UTC

The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* ICL: igt@gem_ctx_create@basic-files - dmesg-warn - BUG kmalloc-8k (Tainted:.*): Redzone overwritten
  - https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_3726/shard-iclb7/igt@gem_ctx_create@basic-files.html

Comment 2 Chris Wilson 2019-11-20 09:11:41 UTC

Doesn't look like us; we now have a cluster of memcorruption bugs, so something is definitely upset.

Comment 3 Martin Peres 2019-11-29 19:50:51 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/intel/issues/626.

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