Bug 104024

Summary:	xinit hangs on black screen with cursor, kernel oopses , bisected
Product:	Mesa	Reporter:	Bug <freedesktop>
Component:	Mesa core	Assignee:	mesa-dev
Status:	RESOLVED FIXED	QA Contact:	mesa-dev
Severity:	normal
Priority:	medium
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Bug 2017-12-01 21:39:58 UTC

videocard is an rx460

xinit session hangs at start black screen with white cursor in left top corner


[  328.303157] Oops: 0000 [#2] PREEMPT SMP
[  328.303160] Modules linked in: snd_cmipci snd_opl3_lib snd_mpu401_uart snd_usb_audio snd_usbmidi_lib snd_rawmidi snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic amdgpu snd_hda_intel snd_hda_codec backlight snd_hwdep snd_hda_core
[  328.303187] CPU: 3 PID: 1982 Comm: X Tainted: G      D         4.14.3 #1
[  328.303190] Hardware name: MICRO-STAR INTERNATIONAL CO.,LTD MS-7596/785GM-E51 (MS-7596), BIOS V2.11 12/08/2010
[  328.303194] task: ffff88022ec50740 task.stack: ffffc900006f8000
[  328.303233] RIP: 0010:amdgpu_info_ioctl+0xe7e/0x1330 [amdgpu]
[  328.303236] RSP: 0018:ffffc900006fbb20 EFLAGS: 00010212
[  328.303241] RAX: 0000000000000000 RBX: ffff88022b238000 RCX: 0000000000062459
[  328.303244] RDX: ffff8802380000a4 RSI: 00000000ffffffff RDI: 0000000034040300
[  328.303247] RBP: ffffc900006fbcd8 R08: 000000000000e200 R09: 0000000000000000
[  328.303250] R10: 0000000000000000 R11: ffffc900006fbd68 R12: ffffc900006fbd68
[  328.303253] R13: ffffffffa00526b0 R14: 0000000000000020 R15: 00007ffc516dbbc0
[  328.303257] FS:  00007f9f536178c0(0000) GS:ffff880237d80000(0000) knlGS:0000000000000000
[  328.303260] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  328.303263] CR2: ffff8802380000a4 CR3: 0000000227410000 CR4: 00000000000006e0
[  328.303266] Call Trace:
[  328.303278]  ? vsnprintf+0x252/0x570
[  328.303284]  ? sprintf+0x42/0x50
[  328.303321]  ? amdgpu_debugfs_add_files+0xb0/0xb0 [amdgpu]
[  328.303329]  drm_ioctl_kernel+0x64/0xb0
[  328.303336]  drm_ioctl+0x2cd/0x390
[  328.303372]  ? amdgpu_debugfs_add_files+0xb0/0xb0 [amdgpu]
[  328.303380]  ? call_rcu+0x18/0x20
[  328.303386]  ? dentry_free+0x33/0x70
[  328.303390]  ? __dentry_kill+0x10f/0x160
[  328.303426]  amdgpu_drm_ioctl+0x9/0x10 [amdgpu]
[  328.303431]  do_vfs_ioctl+0x8d/0x5a0
[  328.303436]  ? ____fput+0x9/0x10
[  328.303441]  SyS_ioctl+0x3c/0x70
[  328.303446]  do_syscall_64+0x74/0x330
[  328.303451]  ? rcu_user_enter+0x43/0x50
[  328.303456]  ? __context_tracking_enter+0x43/0x70
[  328.303462]  entry_SYSCALL64_slow_path+0x25/0x25
[  328.303465] RIP: 0033:0x7f9f526c22d7
[  328.303468] RSP: 002b:00007ffc516dba18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  328.303473] RAX: ffffffffffffffda RBX: 00000000008a81b8 RCX: 00007f9f526c22d7
[  328.303475] RDX: 00007ffc516dba60 RSI: 0000000040206445 RDI: 000000000000000e
[  328.303478] RBP: 00007ffc516dba60 R08: 0000000000000000 R09: 0000000000000000
[  328.303481] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000040206445
[  328.303484] R13: 000000000000000e R14: 00000000008a8420 R15: 00000000008a8420
[  328.303487] Code: 75 eb 41 b8 01 00 00 00 b9 09 00 00 00 e9 c1 fe ff ff 8b bb f8 6b 00 00 85 ff 0f 84 72 04 00 00 48 8d 93 4c 66 00 00 31 f6 31 c9 <0f> b6 02 48 81 c2 18 02 00 00 d3 e0 83 c1 01 09 c6 39 cf 75 eb 
[  328.303586] RIP: amdgpu_info_ioctl+0xe7e/0x1330 [amdgpu] RSP: ffffc900006fbb20
[  328.303589] CR2: ffff8802380000a4
[  328.303593] ---[ end trace c4ed8ae89345f0f6 ]---



git bisected to this commit:
436a3f8d6d52921d91a2dab53fcfca192037125e is the first bad commit
commit 436a3f8d6d52921d91a2dab53fcfca192037125e
Author: Boyuan Zhang <boyuan.zhang@amd.com>
Date:   Tue Nov 7 15:41:40 2017 -0500

    radeon/common: add vcn enc ip info query
    
    New ip info query is needed for vcn encode
    
    Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
    Acked-by: Christian König <christian.koenig@amd.com>

:040000 040000 86c3d1c20a68bdf64f0e63b35ae3a25d5bc75fe2 0be7a9c819bb30959800448fb174b87e6c8fc895 M      src

Comment 1 Michel Dänzer 2017-12-04 09:58:40 UTC

Thanks for the report, this is fixed in the 4.15-rc2 kernel with https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b43aaee69d4327d05e7624d9471c17d015b4d67d which will be backported to stable kernel branches in due time.

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