[Bug 96603] [IGT] [BXT-P / KBL] vgem_basic / mmap causes segmentation fault (core dumped)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Jun 21 06:06:51 UTC 2016


https://bugs.freedesktop.org/show_bug.cgi?id=96603

--- Comment #3 from yann <yann.argotti at intel.com> ---
Relevant piece of dmesg is linked to subtest mmap in vgem_basic test:

[   13.881137] vgem_basic: starting subtest mmap
[   13.881721] [drm:vgem_gem_dumb_create] Created object of size 4194304
[   13.881744] ------------[ cut here ]------------
[   13.882281] kernel BUG at mm/memory.c:1529!
[   13.882826] invalid opcode: 0000 [#1] SMP
[   13.883377] Modules linked in: vgem snd_hda_codec_hdmi bnep asix usbnet mii
spi_pxa2xx_platform 8250_dw i2c_designware_platform x86_pkg_temp_thermal
i2c_designware_core intel_powerclamp coretemp kvm_intel kvm irqbypass
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw
gf128mul glue_helper ablk_helper cryptd snd_hda_codec_realtek
snd_hda_codec_generic serio_raw binfmt_misc arc4 nls_iso8859_1 snd_hda_intel
iwlmvm input_leds mac80211 intel_lpss_pci btusb intel_lpss btrtl btbcm btintel
snd_hda_codec snd_hda_core snd_hwdep bluetooth snd_pcm iwlwifi snd_seq_midi
snd_seq_midi_event snd_rawmidi cfg80211 snd_seq snd_seq_device shpchp snd_timer
mei_me snd mei soundcore rfkill_gpio soc_button_array tpm_crb intel_pmc_ipc
mac_hid parport_pc ppdev lp parport autofs4 hid_generic usbhid
[   13.885582]  mmc_block i915 igb drm_kms_helper dca syscopyarea sysfillrect
ptp sysimgblt sdhci_pci fb_sys_fops pps_core sdhci i2c_algo_bit ahci drm
libahci i2c_hid hid video
[   13.887183] CPU: 1 PID: 1244 Comm: vgem_basic Tainted: G     U         
4.7.0-rc4-drm-intel-nightly-ww26-commit-f586720+ #1
[   13.888027] Hardware name: Intel Corp. Broxton P/NOTEBOOK, BIOS
APLKRVPA.X64.0138.B25.1605230512 05/23/2016
[   13.888908] task: ffff880466bdcc40 ti: ffff88046bdbc000 task.ti:
ffff88046bdbc000
[   13.889794] RIP: 0010:[<ffffffff811bc43b>]  [<ffffffff811bc43b>]
vm_insert_page+0x19b/0x1b0
[   13.890705] RSP: 0000:ffff88046bdbfd38  EFLAGS: 00010202
[   13.891627] RAX: 0000000000000001 RBX: ffff880466947da8 RCX:
0000000000000000
[   13.892569] RDX: 0000000000000002 RSI: 00007f15cc0b9000 RDI:
ffff880467a01c68
[   13.893509] RBP: ffff88046bdbfd68 R08: ffff88046d37f100 R09:
ffff88046bdbfe58
[   13.894470] R10: 00003fffffe00000 R11: 0000000000000000 R12:
ffffea001176eb40
[   13.895450] R13: 00007f15cc0b9000 R14: ffff880466947da8 R15:
0000000000000002
[   13.896436] FS:  00007f15ce7ca740(0000) GS:ffff88047f880000(0000)
knlGS:0000000000000000
[   13.897434] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.898444] CR2: 00007f15cc0b9000 CR3: 000000046bd21000 CR4:
00000000003406e0
[   13.899480] Stack:
[   13.900517]  0000000000000000 00007f15cc0b9000 ffff88046bdbfe58
0000000000100000
[   13.901579]  ffff880466947da8 0000000000000002 ffff88046bdbfd78
ffffffffc052d12b
[   13.902663]  ffff88046bdbfde0 ffffffff811b8976 024200ca00000055
0000000000100000
[   13.903766] Call Trace:
[   13.904861]  [<ffffffffc052d12b>] vgem_gem_fault+0x4b/0x90 [vgem]
[   13.905974]  [<ffffffff811b8976>] __do_fault+0x66/0x130
[   13.907095]  [<ffffffff811b9bc8>] ? __pte_alloc+0xb8/0x110
[   13.908183]  [<ffffffff811bd33d>] handle_mm_fault+0x35d/0x1c90
[   13.909231]  [<ffffffff811c4c00>] ? do_mmap+0x440/0x540
[   13.910260]  [<ffffffff81374018>] ? common_mmap+0x48/0x50
[   13.911290]  [<ffffffff81374066>] ? apparmor_mmap_file+0x16/0x20
[   13.912321]  [<ffffffff81067022>] __do_page_fault+0x1e2/0x4d0
[   13.913331]  [<ffffffff81067332>] do_page_fault+0x22/0x30
[   13.914353]  [<ffffffff81800438>] page_fault+0x28/0x30
[   13.915370] Code: 83 c4 08 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 b8 f2 ff
ff ff c3 48 8b 7d d0 c6 07 00 0f 1f 40 00 b8 f0 ff ff ff e9 06 ff ff ff <0f> 0b
0f 0b b8 ea ff ff ff c3 66 66 2e 0f 1f 84 00 00 00 00 00 
[   13.916560] RIP  [<ffffffff811bc43b>] vm_insert_page+0x19b/0x1b0
[   13.917639]  RSP <ffff88046bdbfd38>
[   13.918754] ---[ end trace 22452399a79e67b6 ]---

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