[Bug 103703] New: [BAT] igt at vgem_basic@debugfs - dmesg-fails - regression

Mon Nov 13 07:03:04 UTC 2017

https://bugs.freedesktop.org/show_bug.cgi?id=103703

            Bug ID: 103703
           Summary: [BAT] igt at vgem_basic@debugfs - dmesg-fails -
                    regression
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: marta.lofstedt at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

>From CI_DRM_3334 and all consecutive runs igt at vgem_basic@debugfs dmesg-fails on
most BAT machines.
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3334/commits.log

an example:
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3334/fi-skl-6600u/igt@vgem_basic@debugfs.html

long ftrace on typically:
[  483.304338] prime_vg-4312    1..s. 480563110us : intel_lrc_irq_handler:
...
[  483.304350] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic snd_hda_intel snd_hda_codec x86_pkg_temp_thermal
intel_powerclamp snd_hwdep coretemp crct10dif_pclmul snd_hda_core crc32_pclmul
ghash_clmulni_intel i915 snd_pcm asix usbnet mii mei_me mei prime_numbers
i2c_hid pinctrl_sunrisepoint pinctrl_intel
[  483.304387] CPU: 1 PID: 4321 Comm: vgem_basic Tainted: G     U         
4.14.0-rc8-CI-CI_DRM_3334+ #1
[  483.304394] Hardware name: Dell Inc. XPS 13 9350/      , BIOS 1.4.12
11/30/2016
[  483.304401] task: ffff8802085c50c0 task.stack: ffffc90001a28000
[  483.304407] RIP: 0010:drm_framebuffer_info+0x77/0xc0
[  483.304412] RSP: 0018:ffffc90001a2bd68 EFLAGS: 00010286
[  483.304417] RAX: 0000000000000000 RBX: fffffffffffffff8 RCX:
0000000000000001
[  483.304423] RDX: 0000000080000001 RSI: 0000000000000000 RDI:
00000000ffffffff
[  483.304428] RBP: ffffc90001a2bda0 R08: 0000000000000000 R09:
0000000000000000
[  483.304434] R10: ffffc90001a2bd58 R11: ffffffff81607ef8 R12:
ffff88026dd5a950
[  483.304439] R13: ffff88026dd5a8c8 R14: ffffffff81ce969b R15:
ffff880271bce2b8
[  483.304445] FS:  00007f8de58158c0(0000) GS:ffff88027dc80000(0000)
knlGS:0000000000000000
[  483.304451] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  483.304456] CR2: 0000000000000010 CR3: 000000026ca80005 CR4:
00000000003606e0
[  483.304462] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[  483.304467] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[  483.304473] Call Trace:
[  483.304476]  ? drm_mode_gamma_get_ioctl+0xf0/0xf0
[  483.304482]  seq_read+0xe1/0x3a0
[  483.304488]  full_proxy_read+0x54/0x80
[  483.304492]  __vfs_read+0x28/0x120
[  483.304496]  ? putname+0x54/0x60
[  483.304501]  ? rcu_read_lock_sched_held+0x7a/0x90
[  483.304506]  ? entry_SYSCALL_64_fastpath+0x5/0xb1
[  483.304511]  vfs_read+0xa8/0x150
[  483.304515]  SyS_read+0x49/0xb0
[  483.304519]  entry_SYSCALL_64_fastpath+0x1c/0xb1
[  483.304523] RIP: 0033:0x7f8de3ffb6d0
[  483.304526] RSP: 002b:00007ffd88a31858 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[  483.304533] RAX: ffffffffffffffda RBX: ffffffff81492083 RCX:
00007f8de3ffb6d0
[  483.304538] RDX: 000000000000003f RSI: 000055b2d1ef8b20 RDI:
0000000000000005
[  483.304544] RBP: ffffc90001a2bf88 R08: 0000000000000000 R09:
0000000000000050
[  483.304549] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000005
[  483.304555] R13: 000055b2d1ef8b20 R14: 0000000000000000 R15:
0000000000000000
[  483.304562]  ? __this_cpu_preempt_check+0x13/0x20
[  483.304566] Code: 20 06 00 00 48 a9 f8 ff ff ff 74 63 49 8b 84 24 a8 06 00
00 49 81 c4 a8 06 00 00 49 c7 c6 9b 96 ce 81 49 39 c4 48 8d 58 f8 74 2d <8b> 53
18 48 8d 7d c8 4c 89 f6 e8 4a 5c 00 00 48 8d 7d c8 48 89 
[  483.304618] RIP: drm_framebuffer_info+0x77/0xc0 RSP: ffffc90001a2bd68
[  483.304624] CR2: 0000000000000010
[  483.304628] ---[ end trace 082744115499dbb7 ]---
[  485.129001] BUG: sleeping function called from invalid context at
./include/linux/percpu-rwsem.h:34
[  485.129014] in_atomic(): 0, irqs_disabled(): 1, pid: 4321, name: vgem_basic
[  485.129021] INFO: lockdep is turned off.
[  485.129026] irq event stamp: 24705
[  485.129034] hardirqs last  enabled at (24705): [<ffffffff811fc6d9>]
__slab_alloc.isra.23.constprop.28+0x59/0x80
[  485.129045] hardirqs last disabled at (24704): [<ffffffff811fc6a4>]
__slab_alloc.isra.23.constprop.28+0x24/0x80
[  485.129055] softirqs last  enabled at (24144): [<ffffffff8191c656>]
__do_softirq+0x3a6/0x4ae
[  485.129064] softirqs last disabled at (24123): [<ffffffff810861de>]
irq_exit+0xae/0xc0
[  485.129072] CPU: 1 PID: 4321 Comm: vgem_basic Tainted: G     UD        
4.14.0-rc8-CI-CI_DRM_3334+ #1
[  485.129079] Hardware name: Dell Inc. XPS 13 9350/      , BIOS 1.4.12
11/30/2016
[  485.129086] Call Trace:
[  485.129091]  dump_stack+0x68/0x9f
[  485.129095]  ___might_sleep+0x1e5/0x240
[  485.129100]  __might_sleep+0x4a/0x80
[  485.129105]  exit_signals+0x24/0x2a0
[  485.129109]  do_exit+0x9a/0xca0
[  485.129114]  ? SyS_read+0x49/0xb0
[  485.129132]  rewind_stack_do_exit+0x17/0x20
[  485.129140] RIP: 0033:0x7f8de3ffb6d0
[  485.129144] RSP: 002b:00007ffd88a31858 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[  485.129151] RAX: ffffffffffffffda RBX: ffffffff81492083 RCX:
00007f8de3ffb6d0
[  485.129156] RDX: 000000000000003f RSI: 000055b2d1ef8b20 RDI:
0000000000000005
[  485.129162] RBP: ffffc90001a2bf88 R08: 0000000000000000 R09:
0000000000000050
[  485.129168] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000005
[  485.129173] R13: 000055b2d1ef8b20 R14: 0000000000000000 R15:
0000000000000000
[  485.129180]  ? __this_cpu_preempt_check+0x13/0x20

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