Hello, 

on a machine running OpenBSD 7.7-stable, with a user with bad bug
reporting habits, pcmanfm-qt segfaults. 
I cannot tell when this started, but not for too long, probably weeks at
most. 

$ /usr/local/bin/pcmanfm-qt 
isPrimaryInstance

(pcmanfm-qt:21367): GLib-CRITICAL **: 16:14:05.376: g_main_context_pop_thread_default: assertion 'stack != NULL' failed
Segmentation fault (core dumped) 

There is no -debug package for pcmanfm-qt that I could find.

Version info:

OpenBSD wiw22c.weiliwohn.at 7.7 GENERIC.MP#2 amd64

$ pkg_info pcmanfm-qt  
Information for inst:pcmanfm-qt-2.1.0
[...]

Any pointers where to look?
Any debugging hints?

Marcus

OpenBSD 7.7 (GENERIC.MP) #2: Sun Jun 29 09:04:02 MDT 2025
    root@syspatch-77-amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 16898199552 (16115MB)
avail mem = 16359460864 (15601MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.2 @ 0x8f7ff000 (94 entries)
bios0: vendor American Megatrends Inc. version "2.02" date 12/14/2021
bios0: Shuttle Inc. DS20U
efi0 at bios0: UEFI 2.7
efi0: American Megatrends rev 0x50011
acpi0 at bios0: ACPI 6.2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP MCFG SSDT FIDT SSDT HPET SSDT SSDT NHLT LPIT SSDT SSDT DBGP DBG2 SSDT TPM2 DMAR WSMT APIC FPDT
acpi0: wakeup devices RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) RP03(S4) PXSX(S4) RP04(S4) PXSX(S4) RP05(S4) PXSX(S4) RP06(S4) PXSX(S4) RP07(S4) PXSX(S4) RP08(S4) PXSX(S4) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimcfg0 at acpi0
acpimcfg0: addr 0xe0000000, bus 0-255
acpihpet0 at acpi0: 23999999 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz, 1696.05 MHz, 06-8e-0c, patch 00000100
cpu0: cpuid 1 edx=bfebfbff<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> ecx=77fafbbf<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>
cpu0: cpuid 6 eax=27f7<SENSOR,ARAT> ecx=9<EFFFREQ>
cpu0: cpuid 7.0 ebx=29c67af<FSGSBASE,TSC_ADJUST,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT> edx=bc000600<SRBDS_CTRL,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD>
cpu0: cpuid a vers=4, gp=8, gpwidth=48, ff=3, ffwidth=48
cpu0: cpuid d.1 eax=f<XSAVEOPT,XSAVEC,XGETBV1,XSAVES>
cpu0: cpuid 80000001 edx=2c100800<NXE,PAGE1GB,RDTSCP,LONG> ecx=121<LAHF,ABM,3DNOWP>
cpu0: cpuid 80000007 edx=100<ITSC>
cpu0: msr 10a=a0a0c2b<IBRS_ALL,SKIP_L1DFL,MDS_NO,MISC_PKG_CT,ENERGY_FILT,FB_CLEAR,RRSBA,GDS_CTRL,RFDS_NO>
cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB 64b/line 4-way L2 cache, 8MB 64b/line 16-way L3 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=0.2.1.2.4.1.1.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz, 1696.05 MHz, 06-8e-0c, patch 00000100
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz, 1696.05 MHz, 06-8e-0c, patch 00000100
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz, 1696.05 MHz, 06-8e-0c, patch 00000100
cpu3: smt 0, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
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 -1 (RP01)
acpiprt5 at acpi0: bus -1 (RP02)
acpiprt6 at acpi0: bus -1 (RP03)
acpiprt7 at acpi0: bus -1 (RP04)
acpiprt8 at acpi0: bus -1 (RP05)
acpiprt9 at acpi0: bus -1 (RP06)
acpiprt10 at acpi0: bus -1 (RP07)
acpiprt11 at acpi0: bus 1 (RP08)
acpiprt12 at acpi0: bus -1 (RP09)
acpiprt13 at acpi0: bus -1 (RP10)
acpiprt14 at acpi0: bus -1 (RP11)
acpiprt15 at acpi0: bus -1 (RP12)
acpiprt16 at acpi0: bus 2 (RP13)
acpiprt17 at acpi0: bus -1 (RP14)
acpiprt18 at acpi0: bus -1 (RP15)
acpiprt19 at acpi0: bus -1 (RP16)
acpiprt20 at acpi0: bus -1 (RP17)
acpiprt21 at acpi0: bus -1 (RP18)
acpiprt22 at acpi0: bus -1 (RP19)
acpiprt23 at acpi0: bus -1 (RP20)
acpiprt24 at acpi0: bus -1 (RP21)
acpiprt25 at acpi0: bus -1 (RP22)
acpiprt26 at acpi0: bus -1 (RP23)
acpiprt27 at acpi0: bus -1 (RP24)
acpiec0 at acpi0: not present
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
com1 at acpi0 UAR2 addr 0x2f8/0x8 irq 3: ns16550a, 16 byte fifo
pchgpio0 at acpi0 GPI0 addr 0xfd6e0000/0x10000 0xfd6d0000/0x10000 0xfd6a0000/0x10000 irq 14, 320 pins
"INT0E0C" at acpi0 not configured
acpibtn0 at acpi0: SLPB
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
intelpmc0 at acpi0: PEPD
state 0: 0x7f:1:2:0x00:0x0000000000000060
counter: 0x7f:64:0:0x00:0x0000000000000632
frequency: 0
state 1: 0x7f:1:2:0x00:0x0000000000000060
counter: 0x00:32:0:0x03:0x00000000fe00193c
frequency: 9580
"ACPI000E" at acpi0 not configured
acpibtn1 at acpi0: PWRB
tpm0 at acpi0 TPM_ 2.0 (CRB) addr 0xfed40000/0x5000, device 0x00000000 rev 0x0
"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
acpipwrres0 at acpi0: USBC, resource for XDCI
acpipwrres1 at acpi0: V0PR
acpipwrres2 at acpi0: V1PR
acpipwrres3 at acpi0: V2PR
acpipwrres4 at acpi0: WRST
acpicpu0 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
acpipwrres5 at acpi0: FN00, resource for FAN0
acpipwrres6 at acpi0: FN01, resource for FAN1
acpipwrres7 at acpi0: FN02, resource for FAN2
acpipwrres8 at acpi0: FN03, resource for FAN3
acpipwrres9 at acpi0: FN04, resource for FAN4
acpitz0 at acpi0
acpitz0: critical temperature is 119 degC
acpipwrres10 at acpi0: PIN_
acpivideo0 at acpi0: GFX0
acpivout0 at acpivideo0: DD1F
cpu0: Enhanced SpeedStep 1696 MHz: speeds: 2301, 2300, 2200, 2000, 1800, 1700, 1600, 1500, 1300, 1200, 1100, 900, 800, 700, 500, 400 MHz
pci0 at mainbus0 bus 0
0:31:5: mem address conflict 0xfe010000/0x1000
pchb0 at pci0 dev 0 function 0 "Intel Core 10G Host" rev 0x0c
inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics" rev 0x02
drm0 at inteldrm0
inteldrm0: msi, COMETLAKE, gen 9
pchtemp0 at pci0 dev 18 function 0 "Intel 400 Series Thermal" rev 0x00
xhci0 at pci0 dev 20 function 0 "Intel 400 Series xHCI" rev 0x00: msi, xHCI 1.10
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 400 Series Shared SRAM" rev 0x00 at pci0 dev 20 function 2 not configured
"Intel 400 Series MEI" rev 0x00 at pci0 dev 22 function 0 not configured
ahci0 at pci0 dev 23 function 0 "Intel 400 Series AHCI" rev 0x00: msi, AHCI 1.3.1
ahci0: PHY offline on port 0
ahci0: port 1: 6.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 1 lun 0: <ATA, ST1000LM048-2E71, 0001> naa.5000c500ed895e27
sd0: 953869MB, 512 bytes/sector, 1953525168 sectors, thin
ppb0 at pci0 dev 28 function 0 "Intel 400 Series PCIE" rev 0xf0: msi
pci1 at ppb0 bus 1
em0 at pci1 dev 0 function 0 "Intel I211" rev 0x03: msi, address 80:ee:73:f7:f5:50
ppb1 at pci0 dev 29 function 0 "Intel 400 Series PCIE" rev 0xf0: msi
pci2 at ppb1 bus 2
nvme0 at pci2 dev 0 function 0 vendor "Kingston", unknown product 0x500f rev 0x03: msix, NVMe 1.3
nvme0: KINGSTON SNVS500G, firmware S8H40104, serial 50026B7282CA80B7
scsibus2 at nvme0: 2 targets, initiator 0
sd1 at scsibus2 targ 1 lun 0: <NVMe, KINGSTON SNVS500, S8H4>
sd1: 476940MB, 512 bytes/sector, 976773168 sectors
pcib0 at pci0 dev 31 function 0 "Intel 400 Series LPC" rev 0x00
azalia0 at pci0 dev 31 function 3 "Intel 400 Series HD Audio" rev 0x00: msi
azalia0: codecs: Realtek ALC888, Intel/0x280b, using Realtek ALC888
audio0 at azalia0
ichiic0 at pci0 dev 31 function 4 "Intel 400 Series SMBus" rev 0x00: apic 2 int 16
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 8GB DDR4 SDRAM PC4-21300 SO-DIMM
spdmem1 at iic0 addr 0x52: 8GB DDR4 SDRAM PC4-21300 SO-DIMM
"Intel 400 Series SPI" rev 0x00 at pci0 dev 31 function 5 not configured
em1 at pci0 dev 31 function 6 "Intel I219-LM" rev 0x00: msi, address 80:ee:73:f7:f5:4f
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
it0 at isa0 port 0x2e/2: IT8728F rev 1, EC port 0xa40
vmm0 at mainbus0: VMX/EPT
efifb at mainbus0 not configured
uhidev0 at uhub0 port 6 configuration 1 interface 0 "American Power Conversion Back-UPS XS 700U   FW:924.Z5 .I USB FW:Z5" rev 1.10/1.06 addr 2
uhidev0: iclass 3/0, 127 report ids
upd0 at uhidev0
uhid0 at uhidev0 reportid 1: input=0, output=0, feature=1
uhid1 at uhidev0 reportid 2: input=0, output=0, feature=1
uhid2 at uhidev0 reportid 3: input=0, output=0, feature=1
uhid3 at uhidev0 reportid 4: input=0, output=0, feature=1
uhid4 at uhidev0 reportid 5: input=0, output=0, feature=1
uhid5 at uhidev0 reportid 6: input=3, output=0, feature=3
uhid6 at uhidev0 reportid 7: input=0, output=0, feature=2
uhid7 at uhidev0 reportid 8: input=0, output=0, feature=2
uhid8 at uhidev0 reportid 9: input=0, output=0, feature=2
uhid9 at uhidev0 reportid 10: input=0, output=0, feature=1
uhid10 at uhidev0 reportid 11: input=0, output=0, feature=1
uhid11 at uhidev0 reportid 12: input=3, output=0, feature=3
uhid12 at uhidev0 reportid 13: input=0, output=0, feature=1
uhid13 at uhidev0 reportid 14: input=0, output=0, feature=1
uhid14 at uhidev0 reportid 15: input=0, output=0, feature=1
uhid15 at uhidev0 reportid 16: input=0, output=0, feature=1
uhid16 at uhidev0 reportid 17: input=0, output=0, feature=1
uhid17 at uhidev0 reportid 18: input=0, output=0, feature=1
uhid18 at uhidev0 reportid 21: input=0, output=0, feature=2
uhid19 at uhidev0 reportid 23: input=0, output=0, feature=2
uhid20 at uhidev0 reportid 24: input=0, output=0, feature=1
uhid21 at uhidev0 reportid 28: input=0, output=0, feature=3
uhid22 at uhidev0 reportid 32: input=0, output=0, feature=2
uhid23 at uhidev0 reportid 33: input=1, output=0, feature=1
uhid24 at uhidev0 reportid 34: input=0, output=0, feature=1
uhid25 at uhidev0 reportid 35: input=0, output=0, feature=2
uhid26 at uhidev0 reportid 36: input=0, output=0, feature=2
uhid27 at uhidev0 reportid 37: input=0, output=0, feature=2
uhid28 at uhidev0 reportid 38: input=0, output=0, feature=2
uhid29 at uhidev0 reportid 39: input=0, output=0, feature=1
uhid30 at uhidev0 reportid 40: input=0, output=0, feature=4
uhid31 at uhidev0 reportid 48: input=0, output=0, feature=2
uhid32 at uhidev0 reportid 49: input=0, output=0, feature=2
uhid33 at uhidev0 reportid 50: input=0, output=0, feature=2
uhid34 at uhidev0 reportid 51: input=0, output=0, feature=2
uhid35 at uhidev0 reportid 52: input=0, output=0, feature=1
uhid36 at uhidev0 reportid 53: input=0, output=0, feature=1
uhid37 at uhidev0 reportid 54: input=0, output=0, feature=1
uhid38 at uhidev0 reportid 64: input=0, output=0, feature=1
uhid39 at uhidev0 reportid 65: input=0, output=0, feature=2
uhid40 at uhidev0 reportid 66: input=0, output=0, feature=2
uhid41 at uhidev0 reportid 80: input=0, output=0, feature=1
uhid42 at uhidev0 reportid 81: input=0, output=0, feature=1
uhid43 at uhidev0 reportid 82: input=0, output=0, feature=2
uhid44 at uhidev0 reportid 96: input=0, output=0, feature=2
uhid45 at uhidev0 reportid 97: input=0, output=0, feature=1
uhid46 at uhidev0 reportid 98: input=0, output=0, feature=4
uhid47 at uhidev0 reportid 116: input=0, output=0, feature=4
uhid48 at uhidev0 reportid 117: input=0, output=0, feature=2
uhid49 at uhidev0 reportid 120: input=0, output=0, feature=1
uhid50 at uhidev0 reportid 121: input=0, output=0, feature=1
uhid51 at uhidev0 reportid 122: input=0, output=0, feature=4
uhid52 at uhidev0 reportid 123: input=0, output=0, feature=2
uhid53 at uhidev0 reportid 124: input=0, output=0, feature=1
uhid54 at uhidev0 reportid 125: input=0, output=0, feature=1
uhid55 at uhidev0 reportid 126: input=0, output=0, feature=1
uhid56 at uhidev0 reportid 127: input=0, output=0, feature=1
uhub1 at uhub0 port 7 configuration 1 interface 0 "Genesys Logic USB2.0 Hub" rev 2.00/88.32 addr 3
uhidev1 at uhub1 port 2 configuration 1 interface 0 "PixArt USB Optical Mouse" rev 1.10/1.00 addr 4
uhidev1: iclass 3/1
ums0 at uhidev1: 3 buttons, Z dir
wsmouse0 at ums0 mux 0
uhidev2 at uhub1 port 3 configuration 1 interface 0 "Cherry GmbH CHERRY Corded Device" rev 2.00/3.03 addr 5
uhidev2: iclass 3/1
ukbd0 at uhidev2: 8 variable keys, 6 key codes
wskbd1 at ukbd0 mux 1
uhidev3 at uhub1 port 3 configuration 1 interface 1 "Cherry GmbH CHERRY Corded Device" rev 2.00/3.03 addr 5
uhidev3: iclass 3/0
ucc0 at uhidev3: 10 usages, 9 keys, enum
wskbd2 at ucc0 mux 1
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd1a (32d31fbe5a414714.a) swap on sd1b dump on sd1b
inteldrm0: 3840x2160, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
wskbd1: connecting to wsdisplay0
wskbd2: connecting to wsdisplay0
wsdisplay0: screen 1-5 added (std, vt100 emulation)
sd2 at scsibus4 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006>
sd2: 410318MB, 512 bytes/sector, 840332528 sectors
drm:pid22189:intel_vblank_evade *ERROR* [drm] *ERROR* Potential atomic update failure on pipe A
drm:pid22189:intel_vblank_evade *ERROR* [drm] *ERROR* Potential atomic update failure on pipe A
drm:pid22189:intel_vblank_evade *ERROR* [drm] *ERROR* Potential atomic update failure on pipe A