Hi, I recently bought a new computer and it runs OpenBSD (latest snapshot, -current) natively. Everything is fine except a program I develop on and it crashes according to gdb with a SIGBUS.
When I run this program on another amd64 computer (vmware fusion on mac, OpenBSD 5.5-stable), I do not get the SIGBUS's and the program behaves normally. So I'm wondering why no coredumps? SIGBUS is supposed to dump core. I have: # ls /var/crash minfree # sysctl -a|grep suid kern.nosuidcoredump=2 # ls -ld /var/crash drwxrwxrwt 2 root wheel 512 Apr 30 21:05 /var/crash is this not enough to make my program which setresuid()'s after fork, core? I also have run memtest86 from an old linux CD, it did four passes over 15 minutes successfully, no errors. I'm going to send you a dmesg as well, it's patched with a patch from an openbsd developer. But I'm upset that my program doesn't dump core. Could this be an OS fault before I blame the hardware? -peter OpenBSD 5.5-current (MERCURY.MP) #0: Thu May 1 15:44:26 CEST 2014 r...@mercury.centroid.eu:/usr/src/sys/arch/amd64/compile/MERCURY.MP real mem = 34006806528 (32431MB) avail mem = 33092833280 (31559MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xec1f0 (91 entries) bios0: vendor American Megatrends Inc. version "1504" date 10/04/2013 bios0: ASUS All Series acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP APIC FPDT LPIT SSDT SSDT MCFG HPET SSDT SSDT BGRT acpi0: wakeup devices PXSX(S4) 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) [...] 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) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3498.42 MHz 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM 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 99MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3497.98 MHz 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM 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) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3497.98 MHz 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM 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) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3497.98 MHz 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM cpu3: 256KB 64b/line 8-way L2 cache cpu3: smt 0, core 3, package 0 cpu4 at mainbus0: apid 1 (application processor) cpu4: Intel(R) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3497.98 MHz cpu4: 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM cpu4: 256KB 64b/line 8-way L2 cache cpu4: smt 1, core 0, package 0 cpu5 at mainbus0: apid 3 (application processor) cpu5: Intel(R) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3497.98 MHz cpu5: 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM cpu5: 256KB 64b/line 8-way L2 cache cpu5: smt 1, core 1, package 0 cpu6 at mainbus0: apid 5 (application processor) cpu6: Intel(R) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3497.98 MHz cpu6: 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM cpu6: 256KB 64b/line 8-way L2 cache cpu6: smt 1, core 2, package 0 cpu7 at mainbus0: apid 7 (application processor) cpu7: Intel(R) Xeon(R) CPU E3-1275 v3 @ 3.50GHz, 3497.98 MHz cpu7: 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,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM cpu7: 256KB 64b/line 8-way L2 cache cpu7: smt 1, core 3, package 0 ioapic0 at mainbus0: apid 8 pa 0xfec00000, version 20, 24 pins acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63 acpihpet0 at acpi0: 14318179 Hz acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 5 (RP01) acpiprt2 at acpi0: bus 6 (RP03) acpiprt3 at acpi0: bus 7 (RP08) acpiprt4 at acpi0: bus 1 (PEG0) acpiprt5 at acpi0: bus -1 (PEG1) acpiprt6 at acpi0: bus -1 (PEG2) acpiec0 at acpi0: Failed to read resource settings acpicpu0 at acpi0: C1, PSS acpicpu1 at acpi0: C1, PSS acpicpu2 at acpi0: C1, PSS acpicpu3 at acpi0: C1, PSS acpicpu4 at acpi0: C1, PSS acpicpu5 at acpi0: C1, PSS acpicpu6 at acpi0: C1, PSS acpicpu7 at acpi0: C1, PSS acpipwrres0 at acpi0: FN00, resource for FAN0 acpipwrres1 at acpi0: FN01, resource for FAN1 acpipwrres2 at acpi0: FN02, resource for FAN2 acpipwrres3 at acpi0: FN03, resource for FAN3 acpipwrres4 at acpi0: FN04, resource for FAN4 acpitz0 at acpi0: critical temperature is 105 degC acpitz1 at acpi0: critical temperature is 105 degC acpibat0 at acpi0: BAT0 not present acpibat1 at acpi0: BAT1 not present acpibat2 at acpi0: BAT2 not present acpibtn0 at acpi0: PWRB acpibtn1 at acpi0: LID0 acpivideo0 at acpi0: GFX0 acpivout0 at acpivideo0: DD1F cpu0: Enhanced SpeedStep 3498 MHz: speeds: 3501, 3500, 3300, 3100, 2900, 2700, 2500, 2300, 2100, 2000, 1800, 1600, 1400, 1200, 1000, 800 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Xeon E3-1200 v3 Host" rev 0x06 ppb0 at pci0 dev 1 function 0 "Intel Core 4G PCIE" rev 0x06: msi pci1 at ppb0 bus 1 ppb1 at pci1 dev 0 function 0 vendor "PLX", unknown product 0x8747 rev 0xba pci2 at ppb1 bus 2 ppb2 at pci2 dev 8 function 0 vendor "PLX", unknown product 0x8747 rev 0xba: msi pci3 at ppb2 bus 4 ppb3 at pci2 dev 16 function 0 vendor "PLX", unknown product 0x8747 rev 0xba: msi pci4 at ppb3 bus 3 vga1 at pci0 dev 2 function 0 "Intel HD Graphics P4600" rev 0x06 intagp0 at vga1 agp0 at intagp0: aperture at 0xe0000000, size 0x10000000 inteldrm0 at vga1 drm0 at inteldrm0 error: [drm:pid0:i915_write32] *ERROR* Unknown unclaimed register before writing to 100000 inteldrm0: 1920x1080 wsdisplay0 at vga1 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) azalia0 at pci0 dev 3 function 0 "Intel Core 4G HD Audio" rev 0x06: msi azalia0: No codecs found "Intel 8 Series xHCI" rev 0x05 at pci0 dev 20 function 0 not configured "Intel 8 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured ehci0 at pci0 dev 26 function 0 "Intel 8 Series USB" rev 0x05: apic 8 int 20 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 azalia1 at pci0 dev 27 function 0 "Intel 8 Series HD Audio" rev 0x05: msi azalia1: codecs: Realtek/0x0900 audio0 at azalia1 ppb4 at pci0 dev 28 function 0 "Intel 8 Series PCIE" rev 0xd5: msi pci5 at ppb4 bus 5 ppb5 at pci0 dev 28 function 2 "Intel 8 Series PCIE" rev 0xd5: msi pci6 at ppb5 bus 6 em0 at pci6 dev 0 function 0 "Intel I210" rev 0x03: msi, address bc:ee:7b:dd:2e:5a ppb6 at pci0 dev 28 function 7 "Intel 8 Series PCIE" rev 0xd5: msi pci7 at ppb6 bus 7 em1 at pci7 dev 0 function 0 "Intel I210" rev 0x03: msi, address bc:ee:7b:dd:2e:5b ehci1 at pci0 dev 29 function 0 "Intel 8 Series USB" rev 0x05: apic 8 int 23 usb1 at ehci1: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 pcib0 at pci0 dev 31 function 0 "Intel Z87 LPC" rev 0x05 ahci0 at pci0 dev 31 function 2 "Intel 8 Series AHCI" rev 0x05: msi, AHCI 1.3 ahci0: device on port 1 didn't come ready, TFD: 0x80<BSY> ahci0: CLO did not complete scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 1 lun 0: <ATA, INTEL SSDSA2M160, 2CV1> SCSI3 0/direct fixed naa.50015179591c7319 sd0: 152627MB, 512 bytes/sector, 312581808 sectors, thin cd0 at scsibus1 targ 5 lun 0: <HL-DT-ST, BD-RE BH16NS40, 1.01> ATAPI 5/cdrom removable ichiic0 at pci0 dev 31 function 3 "Intel 8 Series SMBus" rev 0x05: apic 8 int 18 iic0 at ichiic0 spdmem0 at iic0 addr 0x50: 8GB DDR3 SDRAM PC3-12800 spdmem1 at iic0 addr 0x51: 8GB DDR3 SDRAM PC3-12800 spdmem2 at iic0 addr 0x52: 8GB DDR3 SDRAM PC3-12800 spdmem3 at iic0 addr 0x53: 8GB DDR3 SDRAM PC3-12800 isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 uhub2 at uhub0 port 1 "Intel Rate Matching Hub" rev 2.00/0.05 addr 2 uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.05 addr 2 uvideo0 at uhub3 port 3 configuration 1 interface 0 "Logitech product 0x0819" rev 2.00/0.10 addr 3 video0 at uvideo0 uaudio0 at uhub3 port 3 configuration 1 interface 2 "Logitech product 0x0819" rev 2.00/0.10 addr 3 uaudio0: audio descriptors make no sense, error=4 ugen0 at uhub3 port 3 configuration 1 "Logitech product 0x0819" rev 2.00/0.10 addr 3 uhidev0 at uhub3 port 5 configuration 1 interface 0 "Logitech USB-PS/2 Optical Mouse" rev 2.00/27.20 addr 4 uhidev0: iclass 3/1 ums0 at uhidev0: 8 buttons, Z dir wsmouse0 at ums0 mux 0 uhub4 at uhub3 port 7 "ASUS Tek. ASM107x" rev 2.00/1.00 addr 5 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (6658233dd69b328f.a) swap on sd0b dump on sd0b isadma0 at isa0