X segfaults (reproducible, I think)

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X segfaults (reproducible, I think)

Gregory Edigarov-5
Hello folks,

It is most frequently happens when using gedit loaded with plugins.

somehow X does not throw core, so cannot provide a backtrace, sorry

but also happens (rare) with just chromium and a couple of terminals.
also could happen with emacs. but never with gvim.

applications should not fail X, so I believe it is something in X.

if somebody tell me how to get a core from X server, i will also provide it.

thank you

in logs:

[   228.408] (EE) Segmentation fault at address 0x12045234b000
[   228.408] (EE)
Fatal server error:
[   228.408] (EE) Caught signal 11 (Segmentation fault). Server aborting
[   228.408] (EE)
[   228.408] (EE)

dmesg:

OpenBSD 6.4-current (GENERIC.MP) #0: Sun Oct 14 12:24:50 EEST 2018
[hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.0 @ 0xb3200000 (90 entries)
bios0: vendor American Megatrends Inc. version "3805" date 05/10/2018
bios0: ASUSTeK COMPUTER INC. Q170M-C
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP APIC FPDT ASF! MCFG SSDT FIDT SSDT SSDT HPET
SSDT SSDT UEFI SSDT LPIT WSMT SSDT SSDT DBGP DBG2 TPM2
acpi0: wakeup devices PEGP(S4) PEG0(S4) PEGP(S4) PEG1(S4) PEGP(S4)
PEG2(S4) SIO1(S3) UAR1(S4) UAR2(S4) PXSX(S4) RP09(S4) PXSX(S4) RP10(S4)
PXSX(S4) RP11(S4) PXSX(S4) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz, 2694.73 MHz, 06-5e-03
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 24MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz, 2693.78 MHz, 06-5e-03
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz, 2693.78 MHz, 06-5e-03
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz, 2693.78 MHz, 06-5e-03
cpu3:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 0, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xf8000000, bus 0-63
acpihpet0 at acpi0: 23999999 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PEG0)
acpiprt2 at acpi0: bus -1 (PEG1)
acpiprt3 at acpi0: bus -1 (PEG2)
acpiprt4 at acpi0: bus 4 (RP09)
acpiprt5 at acpi0: bus -1 (RP10)
acpiprt6 at acpi0: bus 5 (RP11)
acpiprt7 at acpi0: bus -1 (RP12)
acpiprt8 at acpi0: bus -1 (RP13)
acpiprt9 at acpi0: bus 2 (RP01)
acpiprt10 at acpi0: bus -1 (RP02)
acpiprt11 at acpi0: bus -1 (RP03)
acpiprt12 at acpi0: bus -1 (RP04)
acpiprt13 at acpi0: bus 3 (RP05)
acpiprt14 at acpi0: bus -1 (RP06)
acpiprt15 at acpi0: bus -1 (RP07)
acpiprt16 at acpi0: bus -1 (RP08)
acpiprt17 at acpi0: bus 1 (RP17)
acpiprt18 at acpi0: bus -1 (RP18)
acpiprt19 at acpi0: bus -1 (RP19)
acpiprt20 at acpi0: bus -1 (RP20)
acpiprt21 at acpi0: bus -1 (RP21)
acpiprt22 at acpi0: bus -1 (RP22)
acpiprt23 at acpi0: bus -1 (RP23)
acpiprt24 at acpi0: bus -1 (RP24)
acpiprt25 at acpi0: bus -1 (RP14)
acpiprt26 at acpi0: bus -1 (RP15)
acpiprt27 at acpi0: bus -1 (RP16)
acpiec0 at acpi0: not present
acpicpu0 at acpi0: C3(200@256 mwait.1@0x40), C2(200@120 mwait.1@0x32),
C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C3(200@256 mwait.1@0x40), C2(200@120 mwait.1@0x32),
C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C3(200@256 mwait.1@0x40), C2(200@120 mwait.1@0x32),
C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C3(200@256 mwait.1@0x40), C2(200@120 mwait.1@0x32),
C1(1000@1 mwait.1), PSS
acpipwrres0 at acpi0: PG00, resource for PEG0
acpipwrres1 at acpi0: PG01, resource for PEG1
acpipwrres2 at acpi0: PG02, resource for PEG2
acpipwrres3 at acpi0: WRST
acpipwrres4 at acpi0: WRST
acpipwrres5 at acpi0: WRST
acpipwrres6 at acpi0: WRST
acpipwrres7 at acpi0: WRST
acpipwrres8 at acpi0: WRST
acpipwrres9 at acpi0: WRST
acpipwrres10 at acpi0: WRST
acpipwrres11 at acpi0: WRST
acpipwrres12 at acpi0: WRST
acpipwrres13 at acpi0: WRST
acpipwrres14 at acpi0: WRST
acpipwrres15 at acpi0: WRST
acpipwrres16 at acpi0: WRST
acpipwrres17 at acpi0: WRST
acpipwrres18 at acpi0: WRST
acpipwrres19 at acpi0: WRST
acpipwrres20 at acpi0: WRST
acpipwrres21 at acpi0: WRST
acpipwrres22 at acpi0: WRST
acpipwrres23 at acpi0: FN00, resource for FAN0
acpipwrres24 at acpi0: FN01, resource for FAN1
acpipwrres25 at acpi0: FN02, resource for FAN2
acpipwrres26 at acpi0: FN03, resource for FAN3
acpipwrres27 at acpi0: FN04, resource for FAN4
acpitz0 at acpi0: critical temperature is 119 degC
acpitz1 at acpi0: critical temperature is 119 degC
acpicmos0 at acpi0
"PNP0C14" at acpi0 not configured
acpibtn0 at acpi0: SLPB
"INT33A1" at acpi0 not configured
acpibtn1 at acpi0: PWRB
"MSFT0101" at acpi0 not configured
"PNP0C0B" at acpi0 not configured
"PNP0C0B" at acpi0 not configured
"PNP0C0B" at acpi0 not configured
"PNP0C0B" at acpi0 not configured
"PNP0C0B" at acpi0 not configured
"PNP0C14" at acpi0 not configured
acpivideo0 at acpi0: GFX0
cpu0: Enhanced SpeedStep 2694 MHz: speeds: 2701, 2700, 2600, 2400, 2300,
2200, 2000, 1900, 1700, 1600, 1500, 1300, 1200, 1100, 900, 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 6G Host" rev 0x07
inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 530" rev 0x06
drm0 at inteldrm0
inteldrm0: msi
error: [drm:pid0:i915_firmware_load_error_print] *ERROR* failed to load
firmware i915/skl_dmc_ver1.bin (-22)
error: [drm:pid0:i915_gem_init_hw] *ERROR* Failed to initialize GuC,
error -8 (ignored)
inteldrm0: 2560x1440, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x31: msi,
xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev
3.00/1.00 addr 1
"Intel 100 Series MEI" rev 0x31 at pci0 dev 22 function 0 not configured
puc0 at pci0 dev 22 function 3 "Intel 100 Series KT" rev 0x31: ports: 16 com
com4 at puc0 port 0 apic 2 int 19: ns16550a, 16 byte fifo
ahci0 at pci0 dev 23 function 0 "Intel 100 Series AHCI" rev 0x31: msi,
AHCI 1.3.1
ahci0: port 0: 6.0Gb/s
ahci0: PHY offline on port 1
ahci0: PHY offline on port 2
ahci0: PHY offline on port 3
ahci0: PHY offline on port 4
ahci0: PHY offline on port 5
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, WDC WD1003FZEX-0, 01.0> SCSI3
0/direct fixed naa.50014ee2b78c572b
sd0: 953869MB, 512 bytes/sector, 1953525168 sectors
ppb0 at pci0 dev 27 function 0 "Intel 100 Series PCIE" rev 0xf1
pci1 at ppb0 bus 1
ppb1 at pci0 dev 28 function 0 "Intel 100 Series PCIE" rev 0xf1
pci2 at ppb1 bus 2
ppb2 at pci0 dev 28 function 4 "Intel 100 Series PCIE" rev 0xf1: msi
pci3 at ppb2 bus 3
radeondrm0 at pci3 dev 0 function 0 "ATI Radeon X1900" rev 0x00
drm1 at radeondrm0
radeondrm0: msi
vendor "ATI", unknown product 0x726b (class display subclass
miscellaneous, rev 0x00) at pci3 dev 0 function 1 not configured
ppb3 at pci0 dev 29 function 0 "Intel 100 Series PCIE" rev 0xf1: msi
pci4 at ppb3 bus 4
em0 at pci4 dev 0 function 0 "Intel 82574L" rev 0x00: msi, address
00:1b:21:94:03:54
ppb4 at pci0 dev 29 function 2 "Intel 100 Series PCIE" rev 0xf1: msi
pci5 at ppb4 bus 5
ppb5 at pci5 dev 0 function 0 "ASMedia ASM1083/1085 PCIE-PCI" rev 0x04
pci6 at ppb5 bus 6
pcib0 at pci0 dev 31 function 0 "Intel Q170 LPC" rev 0x31
"Intel 100 Series PMC" rev 0x31 at pci0 dev 31 function 2 not configured
azalia0 at pci0 dev 31 function 3 "Intel 100 Series HD Audio" rev 0x31: msi
azalia0: codecs: Realtek/0x0887, Intel/0x2809, using Realtek/0x0887
audio0 at azalia0
ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x31:
apic 2 int 16
iic0 at ichiic0
em1 at pci0 dev 31 function 6 "Intel I219-LM" rev 0x31: msi, address
f8:32:e4:88:58:1f
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
lpt0 at isa0 port 0x378/4 irq 7
vmm at mainbus0 not configured
uhidev0 at uhub0 port 13 configuration 1 interface 0 "Logitech USB
Receiver" rev 2.00/12.03 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub0 port 13 configuration 1 interface 1 "Logitech USB
Receiver" rev 2.00/12.03 addr 2
uhidev1: iclass 3/1, 8 report ids
ums0 at uhidev1 reportid 2: 16 buttons, Z and W dir
wsmouse0 at ums0 mux 0
uhid0 at uhidev1 reportid 3: input=4, output=0, feature=0
uhid1 at uhidev1 reportid 4: input=1, output=0, feature=0
uhid2 at uhidev1 reportid 8: input=1, output=0, feature=0
uhidev2 at uhub0 port 13 configuration 1 interface 2 "Logitech USB
Receiver" rev 2.00/12.03 addr 2
uhidev2: iclass 3/0, 33 report ids
uhid3 at uhidev2 reportid 16: input=6, output=6, feature=0
uhid4 at uhidev2 reportid 17: input=19, output=19, feature=0
uhid5 at uhidev2 reportid 32: input=14, output=14, feature=0
uhid6 at uhidev2 reportid 33: input=31, output=31, feature=0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (3992f318b493941d.a) swap on sd0b dump on sd0b
initializing kernel modesetting (R580 0x1002:0x724B 0x1002:0x0B12).
radeondrm0: 1024x768, 32bpp
wsdisplay1 at radeondrm0
wsdisplay1: screen 0-5 added (std, vt100 emulation)

=======================
X.org log:
[    25.938] (--) checkDevMem: using aperture driver /dev/xf86
[    25.958] (--) Using wscons driver on /dev/ttyC4
[    26.232]
X.Org X Server 1.19.6
Release Date: 2017-12-20
[    26.232] X Protocol Version 11, Revision 0
[    26.232] Build Operating System: OpenBSD 6.4 amd64
[    26.232] Current Operating System: OpenBSD lbld12.duckdns.org 6.4
GENERIC.MP#0 amd64
[    26.232] Build Date: 14 October 2018  12:59:26PM
[    26.232]
[    26.232] Current version of pixman: 0.34.0
[    26.232]     Before reporting problems, check http://wiki.x.org
     to make sure that you have the latest version.
[    26.232] Markers: (--) probed, (**) from config file, (==) default
setting,
     (++) from command line, (!!) notice, (II) informational,
     (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    26.233] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Oct 16
09:57:04 2018
[    26.267] (==) Using config file: "/etc/X11/xorg.conf"
[    26.267] (==) Using system config directory
"/usr/X11R6/share/X11/xorg.conf.d"
[    26.320] (==) No Layout section.  Using the first Screen section.
[    26.320] (==) No screen section available. Using defaults.
[    26.320] (**) |-->Screen "Default Screen Section" (0)
[    26.320] (**) |   |-->Monitor "<default monitor>"
[    26.341] (==) No device specified for screen "Default Screen Section".
     Using the first device section listed.
[    26.341] (**) |   |-->Device "drm"
[    26.342] (==) No monitor specified for screen "Default Screen Section".
     Using a default monitor configuration.
[    26.342] (==) Automatically adding devices
[    26.342] (==) Automatically enabling devices
[    26.342] (==) Not automatically adding GPU devices
[    26.382] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    26.928] (==) FontPath set to:
     /usr/X11R6/lib/X11/fonts/misc/,
     /usr/X11R6/lib/X11/fonts/TTF/,
     /usr/X11R6/lib/X11/fonts/OTF/,
     /usr/X11R6/lib/X11/fonts/Type1/,
     /usr/X11R6/lib/X11/fonts/100dpi/,
     /usr/X11R6/lib/X11/fonts/75dpi/
[    26.928] (==) ModulePath set to "/usr/X11R6/lib/modules"
[    26.928] (II) The server relies on wscons to provide the list of
input devices.
     If no devices become available, reconfigure wscons or disable
AutoAddDevices.
[    26.954] (II) Loader magic: 0x120250371000
[    26.954] (II) Module ABI versions:
[    26.954]     X.Org ANSI C Emulation: 0.4
[    26.954]     X.Org Video Driver: 23.0
[    26.954]     X.Org XInput driver : 24.1
[    26.954]     X.Org Server Extension : 10.0
[    27.115] (--) PCI:*(0:0:2:0) 8086:1912:1043:8694 rev 6, Mem @
0xf6000000/16777216, 0xd0000000/268435456, I/O @ 0x0000f000/64
[    27.115] (--) PCI: (0:3:0:0) 1002:724b:1002:0b12 rev 0, Mem @
0xe0000000/268435456, 0xf7130000/65536, I/O @ 0x0000e000/256, BIOS @
0x????????/131072
[    27.115] (--) PCI: (0:3:0:1) 1002:726b:1002:0b13 rev 0, Mem @
0xf7120000/65536
[    27.116] (II) LoadModule: "glx"
[    27.247] (II) Loading /usr/X11R6/lib/modules/extensions/libglx.so
[    27.723] (II) Module glx: vendor="X.Org Foundation"
[    27.723]     compiled for 1.19.6, module version = 1.0.0
[    27.723]     ABI class: X.Org Server Extension, version 10.0
[    27.724] (II) LoadModule: "intel"
[    27.724] (II) Loading /usr/X11R6/lib/modules/drivers/intel_drv.so
[    27.816] (II) Module intel: vendor="X.Org Foundation"
[    27.816]     compiled for 1.19.6, module version = 2.99.916
[    27.816]     Module class: X.Org Video Driver
[    27.816]     ABI class: X.Org Video Driver, version 23.0
[    27.816] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
     i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
     915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
     Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
     GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[    27.817] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000
[    27.817] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100
[    27.817] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics:
5200, 6200, P6300
[    27.842] (II) intel(0): Using Kernel Mode Setting driver: i915,
version 1.6.0 20151010
[    27.874] (WW) intel(0): Unknown chipset
[    27.874] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1,
sse4.2, avx, avx2
[    27.874] (II) intel(0): Creating default Display subsection in
Screen section
     "Default Screen Section" for depth/fbbpp 24/32
[    27.874] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[    27.874] (==) intel(0): RGB weight 888
[    27.874] (==) intel(0): Default visual is TrueColor
[    27.874] (**) intel(0): Option "TearFree" "true"
[    27.875] (II) intel(0): Output HDMI1 has no monitor section
[    27.875] (II) intel(0): Enabled output HDMI1
[    27.875] (II) intel(0): Output HDMI2 has no monitor section
[    27.875] (II) intel(0): Enabled output HDMI2
[    27.875] (II) intel(0): Output DP1 has no monitor section
[    27.875] (II) intel(0): Enabled output DP1
[    27.875] (II) intel(0): Output HDMI3 has no monitor section
[    27.875] (II) intel(0): Enabled output HDMI3
[    27.875] (II) intel(0): Output DP2 has no monitor section
[    27.876] (II) intel(0): Enabled output DP2
[    27.876] (--) intel(0): Using a maximum size of 256x256 for hardware
cursors
[    27.876] (II) intel(0): Output VIRTUAL1 has no monitor section
[    27.876] (II) intel(0): Enabled output VIRTUAL1
[    27.876] (--) intel(0): Output DP1 using initial mode 2560x1440 on
pipe 0
[    27.891] (**) intel(0): TearFree enabled
[    27.891] (==) intel(0): Using gamma correction (1.0, 1.0, 1.0)
[    27.891] (==) intel(0): DPI set to (96, 96)
[    27.891] (II) Loading sub module "dri3"
[    27.891] (II) LoadModule: "dri3"
[    27.891] (II) Module "dri3" already built-in
[    27.891] (II) Loading sub module "dri2"
[    27.891] (II) LoadModule: "dri2"
[    27.891] (II) Module "dri2" already built-in
[    27.891] (II) Loading sub module "present"
[    27.891] (II) LoadModule: "present"
[    27.891] (II) Module "present" already built-in
[    27.891] (==) Depth 24 pixmap format is 32 bpp
[    27.986] (II) intel(0): SNA initialized with generic backend
[    27.986] (==) intel(0): Backing store enabled
[    27.986] (==) intel(0): Silken mouse enabled
[    28.006] (II) intel(0): HW Cursor enabled
[    28.006] (II) intel(0): RandR 1.2 enabled, ignore the following
RandR disabled message.
[    28.089] (==) intel(0): DPMS enabled
[    28.090] (II) intel(0): Textured video not supported on this hardware
[    28.116] (II) intel(0): [DRI2] Setup complete
[    28.116] (II) intel(0): [DRI2]   DRI driver: i965
[    28.116] (II) intel(0): [DRI2]   VDPAU driver: i965
[    28.122] (II) intel(0): direct rendering: DRI2 DRI3 enabled
[    28.122] (II) intel(0): hardware support for Present enabled
[    28.122] (--) RandR disabled
[    29.340] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[    29.340] (II) AIGLX: enabled GLX_ARB_create_context
[    29.340] (II) AIGLX: enabled GLX_ARB_create_context_profile
[    29.340] (II) AIGLX: enabled GLX_EXT_create_context_es{,2}_profile
[    29.340] (II) AIGLX: enabled GLX_INTEL_swap_event
[    29.340] (II) AIGLX: enabled GLX_SGI_swap_control
[    29.340] (II) AIGLX: enabled GLX_EXT_framebuffer_sRGB
[    29.340] (II) AIGLX: enabled GLX_ARB_fbconfig_float
[    29.340] (II) AIGLX: enabled GLX_EXT_fbconfig_packed_float
[    29.340] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer
objects
[    29.340] (II) AIGLX: enabled GLX_ARB_create_context_robustness
[    29.340] (II) AIGLX: Loaded and initialized i965
[    29.340] (II) GLX: Initialized DRI2 GL provider for screen 0
[    29.408] (II) intel(0): switch to mode 2560x1440@60.0 on DP1 using
pipe 0, position (0, 0), rotation normal, reflection none
[    29.420] (II) intel(0): Setting screen physical size to 677 x 381
[    31.251] (II) config/wscons: checking input device /dev/wskbd
[    31.251] (II) wskbd: using layout us
[    31.251] (II) LoadModule: "kbd"
[    31.289] (II) Loading /usr/X11R6/lib/modules/input/kbd_drv.so
[    31.322] (II) Module kbd: vendor="X.Org Foundation"
[    31.322]     compiled for 1.19.6, module version = 1.9.0
[    31.322]     Module class: X.Org XInput Driver
[    31.322]     ABI class: X.Org XInput driver, version 24.1
[    31.322] (II) Using input driver 'kbd' for '/dev/wskbd'
[    31.322] (**) /dev/wskbd: always reports core events
[    31.322] (**) /dev/wskbd: always reports core events
[    31.322] (**) Option "Protocol" "standard"
[    31.322] (**) Option "XkbRules" "base"
[    31.322] (**) Option "XkbModel" "pc105"
[    31.322] (**) Option "XkbLayout" "us"
[    31.322] (II) XINPUT: Adding extended input device "/dev/wskbd"
(type: KEYBOARD, id 6)
[    32.818] (II) config/wscons: checking input device /dev/wsmouse
[    32.818] (II) LoadModule: "ws"
[    32.819] (II) Loading /usr/X11R6/lib/modules/input/ws_drv.so
[    32.855] (II) Module ws: vendor="X.Org Foundation"
[    32.855]     compiled for 1.19.6, module version = 1.3.0
[    32.855]     Module class: X.Org XInput Driver
[    32.855]     ABI class: X.Org XInput driver, version 24.1
[    32.855] (II) Using input driver 'ws' for '/dev/wsmouse'
[    32.855] (**) /dev/wsmouse: always reports core events
[    32.855] (II) ws: /dev/wsmouse: debuglevel 0
[    32.856] (**) Option "Device" "/dev/wsmouse"
[    32.856] (**) ws: /dev/wsmouse: ZAxisMapping: buttons 4 and 5
[    32.856] (**) ws: /dev/wsmouse: WAxisMapping: buttons 6 and 7
[    32.856] (**) ws: /dev/wsmouse: associated screen: 0
[    32.856] (II) ws: /dev/wsmouse: minimum x position: 0
[    32.856] (II) ws: /dev/wsmouse: maximum x position: 2559
[    32.856] (II) ws: /dev/wsmouse: minimum y position: 0
[    32.856] (II) ws: /dev/wsmouse: maximum y position: 1439
[    32.856] (==) ws: /dev/wsmouse: Buttons: 7
[    32.856] (**) ws: /dev/wsmouse: YAxisMapping: buttons 4 and 5
[    32.856] (II) XINPUT: Adding extended input device "/dev/wsmouse"
(type: MOUSE, id 7)
[    32.857] (**) /dev/wsmouse: (accel) keeping acceleration scheme 1
[    32.857] (**) /dev/wsmouse: (accel) acceleration profile 0
[    32.857] (**) /dev/wsmouse: (accel) acceleration factor: 2.000
[    32.857] (**) /dev/wsmouse: (accel) acceleration threshold: 4
[   228.408] (EE) Segmentation fault at address 0x12045234b000
[   228.408] (EE)
Fatal server error:
[   228.408] (EE) Caught signal 11 (Segmentation fault). Server aborting
[   228.408] (EE)
[   228.408] (EE)
Please consult the The X.Org Foundation support
      at http://wiki.x.org
  for help.
[   228.408] (EE) Please also check the log file at
"/var/log/Xorg.0.log" for additional information.
[   228.408] (EE)
[   228.409] (EE) ws: /dev/wsmouse: unknown command 4
[   228.409] (II) AIGLX: Suspending AIGLX clients for VT switch
[   228.415] (EE) Server terminated with error (1). Closing log file.

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Re: X segfaults (reproducible, I think)

Stuart Henderson
On 2018/10/16 12:17, Gregory Edigarov wrote:
> if somebody tell me how to get a core from X server, i will also provide it.

http://cvsweb.openbsd.org/~checkout~/xenocara/README

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Re: X segfaults (reproducible, I think)

Matthieu Herrb-7
On Tue, Oct 16, 2018 at 10:59:19AM +0100, Stuart Henderson wrote:
> On 2018/10/16 12:17, Gregory Edigarov wrote:
> > if somebody tell me how to get a core from X server, i will also
> provide it.

Hi,

If possible, try to run gdb to get a backtrace and post the
backtrace. It will be more efficient.

Also, are you forcing X to use the intel driver via an xorg.conf file?

--
Matthieu Herrb

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Re: X segfaults (reproducible, I think)

Gregory Edigarov-5

On 16.10.18 13:18, Matthieu Herrb wrote:
> On Tue, Oct 16, 2018 at 10:59:19AM +0100, Stuart Henderson wrote:
>> On 2018/10/16 12:17, Gregory Edigarov wrote:
>>> if somebody tell me how to get a core from X server, i will also
>> provide it.
> Hi,
>
> If possible, try to run gdb to get a backtrace and post the
> backtrace. It will be more efficient.
Ok, will follow the steps mentioned by Stewart,  and send you the
backtrace, tomorow.
> Also, are you forcing X to use the intel driver via an xorg.conf file?

here's my xorg.conf :

Section "Device"
     Identifier "drm"
     Driver     "intel"
     Option      "TearFree" "true"
EndSection


mostly work.  i am even able to watch video/youtube all day long but not
run text editor (and even then only some text editor :-)) vim/gvim,
emacs - work most of the time, but not gedit.

and even then, even if gedit not work, why it brings the whole X.org
down? that's what I find strange in the first place.

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Re: X segfaults (reproducible, I think)

Gregory Edigarov-5
In reply to this post by Matthieu Herrb-7

On 16.10.18 13:18, Matthieu Herrb wrote:

> On Tue, Oct 16, 2018 at 10:59:19AM +0100, Stuart Henderson wrote:
>> On 2018/10/16 12:17, Gregory Edigarov wrote:
>>> if somebody tell me how to get a core from X server, i will also
>> provide it.
> Hi,
>
> If possible, try to run gdb to get a backtrace and post the
> backtrace. It will be more efficient.
>
> Also, are you forcing X to use the intel driver via an xorg.conf file?

Yes, i am enforcing, because I also have radeon in this box, and if i am
not enforcing, X chooses radeon on which I have no monitors right now.

the backtrace:

GNU gdb 6.3
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-unknown-openbsd6.4"...
Core was generated by `Xorg'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libpthread.so.25.1...done.
Loaded symbols for /usr/lib/libpthread.so.25.1
Loaded symbols for /usr/X11R6/bin/Xorg
Symbols already loaded for /usr/lib/libpthread.so.25.1
Reading symbols from /usr/X11R6/lib/libpciaccess.so.2.0...done.
Loaded symbols for /usr/X11R6/lib/libpciaccess.so.2.0
Reading symbols from /usr/X11R6/lib/libdrm.so.7.6...done.
Loaded symbols for /usr/X11R6/lib/libdrm.so.7.6
Reading symbols from /usr/X11R6/lib/libpixman-1.so.32.6...done.
Loaded symbols for /usr/X11R6/lib/libpixman-1.so.32.6
Reading symbols from /usr/X11R6/lib/libXfont2.so.1.0...done.
Loaded symbols for /usr/X11R6/lib/libXfont2.so.1.0
Reading symbols from /usr/X11R6/lib/libfontenc.so.4.0...done.
Loaded symbols for /usr/X11R6/lib/libfontenc.so.4.0
Reading symbols from /usr/X11R6/lib/libfreetype.so.29.0...done.
Loaded symbols for /usr/X11R6/lib/libfreetype.so.29.0
Reading symbols from /usr/lib/libz.so.5.0...done.
Loaded symbols for /usr/lib/libz.so.5.0
Reading symbols from /usr/X11R6/lib/libXau.so.10.0...done.
Loaded symbols for /usr/X11R6/lib/libXau.so.10.0
Reading symbols from /usr/X11R6/lib/libxshmfence.so.0.0...done.
Loaded symbols for /usr/X11R6/lib/libxshmfence.so.0.0
Reading symbols from /usr/X11R6/lib/libXdmcp.so.11.0...done.
Loaded symbols for /usr/X11R6/lib/libXdmcp.so.11.0
Reading symbols from /usr/lib/libkvm.so.17.0...done.
Loaded symbols for /usr/lib/libkvm.so.17.0
Reading symbols from /usr/lib/libm.so.10.1...done.
Loaded symbols for /usr/lib/libm.so.10.1
Reading symbols from /usr/lib/libc.so.92.5...done.
Loaded symbols for /usr/lib/libc.so.92.5
Reading symbols from /usr/libexec/ld.so...done.
Loaded symbols for /usr/libexec/ld.so
Reading symbols from /usr/X11R6/lib/modules/extensions/libglx.so...done.
Loaded symbols for /usr/X11R6/lib/modules/extensions/libglx.so
Reading symbols from /usr/X11R6/lib/libGL.so.17.1...done.
Loaded symbols for /usr/X11R6/lib/libGL.so.17.1
Reading symbols from /usr/lib/libexpat.so.12.0...done.
Loaded symbols for /usr/lib/libexpat.so.12.0
Reading symbols from /usr/X11R6/lib/libxcb-dri3.so.0.1...done.
Loaded symbols for /usr/X11R6/lib/libxcb-dri3.so.0.1
Reading symbols from /usr/X11R6/lib/libxcb-present.so.0.1...done.
Loaded symbols for /usr/X11R6/lib/libxcb-present.so.0.1
Reading symbols from /usr/X11R6/lib/libxcb-sync.so.1.2...done.
Loaded symbols for /usr/X11R6/lib/libxcb-sync.so.1.2
Reading symbols from /usr/X11R6/lib/libglapi.so.0.2...done.
Loaded symbols for /usr/X11R6/lib/libglapi.so.0.2
Reading symbols from /usr/X11R6/lib/libXdamage.so.4.0...done.
Loaded symbols for /usr/X11R6/lib/libXdamage.so.4.0
Reading symbols from /usr/X11R6/lib/libXfixes.so.6.0...done.
Loaded symbols for /usr/X11R6/lib/libXfixes.so.6.0
Reading symbols from /usr/X11R6/lib/libX11-xcb.so.2.0...done.
Loaded symbols for /usr/X11R6/lib/libX11-xcb.so.2.0
Reading symbols from /usr/X11R6/lib/libxcb-glx.so.1.1...done.
Loaded symbols for /usr/X11R6/lib/libxcb-glx.so.1.1
Reading symbols from /usr/X11R6/lib/libxcb-dri2.so.1.1...done.
Loaded symbols for /usr/X11R6/lib/libxcb-dri2.so.1.1
Reading symbols from /usr/X11R6/lib/libXxf86vm.so.6.0...done.
Loaded symbols for /usr/X11R6/lib/libXxf86vm.so.6.0
Reading symbols from /usr/X11R6/lib/libXext.so.13.0...done.
Loaded symbols for /usr/X11R6/lib/libXext.so.13.0
Reading symbols from /usr/X11R6/lib/libX11.so.16.1...done.
Loaded symbols for /usr/X11R6/lib/libX11.so.16.1
Reading symbols from /usr/X11R6/lib/libxcb.so.4.0...done.
Loaded symbols for /usr/X11R6/lib/libxcb.so.4.0
Reading symbols from /usr/X11R6/lib/modules/drivers/intel_drv.so...done.
Loaded symbols for /usr/X11R6/lib/modules/drivers/intel_drv.so
Reading symbols from /usr/X11R6/lib/libdrm_intel.so.5.4...done.
Loaded symbols for /usr/X11R6/lib/libdrm_intel.so.5.4
Reading symbols from /usr/X11R6/lib/modules/dri/i965_dri.so...done.
Loaded symbols for /usr/X11R6/lib/modules/dri/i965_dri.so
Reading symbols from /usr/X11R6/lib/libdrm_radeon.so.4.0...done.
Loaded symbols for /usr/X11R6/lib/libdrm_radeon.so.4.0
Reading symbols from /usr/lib/libc++.so.2.0...done.
Loaded symbols for /usr/lib/libc++.so.2.0
Reading symbols from /usr/lib/libc++abi.so.0.1...done.
Loaded symbols for /usr/lib/libc++abi.so.0.1
Reading symbols from /usr/X11R6/lib/modules/input/kbd_drv.so...done.
Loaded symbols for /usr/X11R6/lib/modules/input/kbd_drv.so
Reading symbols from /usr/X11R6/lib/modules/input/ws_drv.so...done.
Loaded symbols for /usr/X11R6/lib/modules/input/ws_drv.so
#0  0x00000e65d558160c in sna_blt_copy_boxes () from
/usr/X11R6/lib/modules/drivers/intel_drv.so
(gdb) bt
#0  0x00000e65d558160c in sna_blt_copy_boxes () from
/usr/X11R6/lib/modules/drivers/intel_drv.so
#1  0x00000e65d55ac47d in no_render_copy_boxes () from
/usr/X11R6/lib/modules/drivers/intel_drv.so
#2  0x00000e65d5553b23 in sna_pixmap_move_to_gpu () from
/usr/X11R6/lib/modules/drivers/intel_drv.so
#3  0x00000e65d556eb97 in sna_copy_boxes () from
/usr/X11R6/lib/modules/drivers/intel_drv.so
#4  0x00000e65d5570c6a in sna_do_copy () from
/usr/X11R6/lib/modules/drivers/intel_drv.so
#5  0x00000e65d555a6d1 in sna_copy_area () from
/usr/X11R6/lib/modules/drivers/intel_drv.so
#6  0x00000e6390a2437a in damageCopyArea () from /usr/X11R6/bin/Xorg
#7  0x00000e63909129b7 in ProcCopyArea () from /usr/X11R6/bin/Xorg
#8  0x00000e639090f8cb in Dispatch () from /usr/X11R6/bin/Xorg
#9  0x00000e639091b4ac in dix_main () from /usr/X11R6/bin/Xorg
#10 0x00000e63909019d6 in _start () from /usr/X11R6/bin/Xorg
#11 0x0000000000000000 in ?? ()

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Re: X segfaults (reproducible, I think)

Matthieu Herrb-7
On Wed, Oct 17, 2018 at 10:51:00AM +0300, Gregory Edigarov wrote:

>
> On 16.10.18 13:18, Matthieu Herrb wrote:
> >On Tue, Oct 16, 2018 at 10:59:19AM +0100, Stuart Henderson wrote:
> >>On 2018/10/16 12:17, Gregory Edigarov wrote:
> >>>if somebody tell me how to get a core from X server, i will also
> >>provide it.
> >Hi,
> >
> >If possible, try to run gdb to get a backtrace and post the
> >backtrace. It will be more efficient.
> >
> >Also, are you forcing X to use the intel driver via an xorg.conf file?
>
> Yes, i am enforcing, because I also have radeon in this box, and if i am not
> enforcing, X chooses radeon on which I have no monitors right now.

Looks like an issue in the intel driver...

Can you try  enforcing the modesetting driver instead ?

You may need to set Option "kmsdev" "/dev/drm0" to make sure it uses
inteldrm and not radeondrm. (or disable radeondrm in 'boot -c').

The situation about the intel driver is sad. It has not seen a formal
release for years now, the code in git master is broken with
not-so-old devices (and probably needs features not present in
OpenBSD's drm version). So modesetting is currently the way to go.
There are issues too, but there is more chance to see them fixed as we
catch up with drm and Mesa.

>
> the backtrace:
>
> GNU gdb 6.3
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "amd64-unknown-openbsd6.4"...
> Core was generated by `Xorg'.
> Program terminated with signal 11, Segmentation fault.
> Reading symbols from /usr/lib/libpthread.so.25.1...done.
> Loaded symbols for /usr/lib/libpthread.so.25.1
> Loaded symbols for /usr/X11R6/bin/Xorg
> Symbols already loaded for /usr/lib/libpthread.so.25.1
> Reading symbols from /usr/X11R6/lib/libpciaccess.so.2.0...done.
> Loaded symbols for /usr/X11R6/lib/libpciaccess.so.2.0
> Reading symbols from /usr/X11R6/lib/libdrm.so.7.6...done.
> Loaded symbols for /usr/X11R6/lib/libdrm.so.7.6
> Reading symbols from /usr/X11R6/lib/libpixman-1.so.32.6...done.
> Loaded symbols for /usr/X11R6/lib/libpixman-1.so.32.6
> Reading symbols from /usr/X11R6/lib/libXfont2.so.1.0...done.
> Loaded symbols for /usr/X11R6/lib/libXfont2.so.1.0
> Reading symbols from /usr/X11R6/lib/libfontenc.so.4.0...done.
> Loaded symbols for /usr/X11R6/lib/libfontenc.so.4.0
> Reading symbols from /usr/X11R6/lib/libfreetype.so.29.0...done.
> Loaded symbols for /usr/X11R6/lib/libfreetype.so.29.0
> Reading symbols from /usr/lib/libz.so.5.0...done.
> Loaded symbols for /usr/lib/libz.so.5.0
> Reading symbols from /usr/X11R6/lib/libXau.so.10.0...done.
> Loaded symbols for /usr/X11R6/lib/libXau.so.10.0
> Reading symbols from /usr/X11R6/lib/libxshmfence.so.0.0...done.
> Loaded symbols for /usr/X11R6/lib/libxshmfence.so.0.0
> Reading symbols from /usr/X11R6/lib/libXdmcp.so.11.0...done.
> Loaded symbols for /usr/X11R6/lib/libXdmcp.so.11.0
> Reading symbols from /usr/lib/libkvm.so.17.0...done.
> Loaded symbols for /usr/lib/libkvm.so.17.0
> Reading symbols from /usr/lib/libm.so.10.1...done.
> Loaded symbols for /usr/lib/libm.so.10.1
> Reading symbols from /usr/lib/libc.so.92.5...done.
> Loaded symbols for /usr/lib/libc.so.92.5
> Reading symbols from /usr/libexec/ld.so...done.
> Loaded symbols for /usr/libexec/ld.so
> Reading symbols from /usr/X11R6/lib/modules/extensions/libglx.so...done.
> Loaded symbols for /usr/X11R6/lib/modules/extensions/libglx.so
> Reading symbols from /usr/X11R6/lib/libGL.so.17.1...done.
> Loaded symbols for /usr/X11R6/lib/libGL.so.17.1
> Reading symbols from /usr/lib/libexpat.so.12.0...done.
> Loaded symbols for /usr/lib/libexpat.so.12.0
> Reading symbols from /usr/X11R6/lib/libxcb-dri3.so.0.1...done.
> Loaded symbols for /usr/X11R6/lib/libxcb-dri3.so.0.1
> Reading symbols from /usr/X11R6/lib/libxcb-present.so.0.1...done.
> Loaded symbols for /usr/X11R6/lib/libxcb-present.so.0.1
> Reading symbols from /usr/X11R6/lib/libxcb-sync.so.1.2...done.
> Loaded symbols for /usr/X11R6/lib/libxcb-sync.so.1.2
> Reading symbols from /usr/X11R6/lib/libglapi.so.0.2...done.
> Loaded symbols for /usr/X11R6/lib/libglapi.so.0.2
> Reading symbols from /usr/X11R6/lib/libXdamage.so.4.0...done.
> Loaded symbols for /usr/X11R6/lib/libXdamage.so.4.0
> Reading symbols from /usr/X11R6/lib/libXfixes.so.6.0...done.
> Loaded symbols for /usr/X11R6/lib/libXfixes.so.6.0
> Reading symbols from /usr/X11R6/lib/libX11-xcb.so.2.0...done.
> Loaded symbols for /usr/X11R6/lib/libX11-xcb.so.2.0
> Reading symbols from /usr/X11R6/lib/libxcb-glx.so.1.1...done.
> Loaded symbols for /usr/X11R6/lib/libxcb-glx.so.1.1
> Reading symbols from /usr/X11R6/lib/libxcb-dri2.so.1.1...done.
> Loaded symbols for /usr/X11R6/lib/libxcb-dri2.so.1.1
> Reading symbols from /usr/X11R6/lib/libXxf86vm.so.6.0...done.
> Loaded symbols for /usr/X11R6/lib/libXxf86vm.so.6.0
> Reading symbols from /usr/X11R6/lib/libXext.so.13.0...done.
> Loaded symbols for /usr/X11R6/lib/libXext.so.13.0
> Reading symbols from /usr/X11R6/lib/libX11.so.16.1...done.
> Loaded symbols for /usr/X11R6/lib/libX11.so.16.1
> Reading symbols from /usr/X11R6/lib/libxcb.so.4.0...done.
> Loaded symbols for /usr/X11R6/lib/libxcb.so.4.0
> Reading symbols from /usr/X11R6/lib/modules/drivers/intel_drv.so...done.
> Loaded symbols for /usr/X11R6/lib/modules/drivers/intel_drv.so
> Reading symbols from /usr/X11R6/lib/libdrm_intel.so.5.4...done.
> Loaded symbols for /usr/X11R6/lib/libdrm_intel.so.5.4
> Reading symbols from /usr/X11R6/lib/modules/dri/i965_dri.so...done.
> Loaded symbols for /usr/X11R6/lib/modules/dri/i965_dri.so
> Reading symbols from /usr/X11R6/lib/libdrm_radeon.so.4.0...done.
> Loaded symbols for /usr/X11R6/lib/libdrm_radeon.so.4.0
> Reading symbols from /usr/lib/libc++.so.2.0...done.
> Loaded symbols for /usr/lib/libc++.so.2.0
> Reading symbols from /usr/lib/libc++abi.so.0.1...done.
> Loaded symbols for /usr/lib/libc++abi.so.0.1
> Reading symbols from /usr/X11R6/lib/modules/input/kbd_drv.so...done.
> Loaded symbols for /usr/X11R6/lib/modules/input/kbd_drv.so
> Reading symbols from /usr/X11R6/lib/modules/input/ws_drv.so...done.
> Loaded symbols for /usr/X11R6/lib/modules/input/ws_drv.so
> #0  0x00000e65d558160c in sna_blt_copy_boxes () from
> /usr/X11R6/lib/modules/drivers/intel_drv.so
> (gdb) bt
> #0  0x00000e65d558160c in sna_blt_copy_boxes () from
> /usr/X11R6/lib/modules/drivers/intel_drv.so
> #1  0x00000e65d55ac47d in no_render_copy_boxes () from
> /usr/X11R6/lib/modules/drivers/intel_drv.so
> #2  0x00000e65d5553b23 in sna_pixmap_move_to_gpu () from
> /usr/X11R6/lib/modules/drivers/intel_drv.so
> #3  0x00000e65d556eb97 in sna_copy_boxes () from
> /usr/X11R6/lib/modules/drivers/intel_drv.so
> #4  0x00000e65d5570c6a in sna_do_copy () from
> /usr/X11R6/lib/modules/drivers/intel_drv.so
> #5  0x00000e65d555a6d1 in sna_copy_area () from
> /usr/X11R6/lib/modules/drivers/intel_drv.so
> #6  0x00000e6390a2437a in damageCopyArea () from /usr/X11R6/bin/Xorg
> #7  0x00000e63909129b7 in ProcCopyArea () from /usr/X11R6/bin/Xorg
> #8  0x00000e639090f8cb in Dispatch () from /usr/X11R6/bin/Xorg
> #9  0x00000e639091b4ac in dix_main () from /usr/X11R6/bin/Xorg
> #10 0x00000e63909019d6 in _start () from /usr/X11R6/bin/Xorg
> #11 0x0000000000000000 in ?? ()

--
Matthieu Herrb