Sorry folks for this shitty report, but i thought it's maybe better to send it out than not to be able to sleep or so. I guess it's somehow related to the rthread wait4() path, but of course i dunno. Here's what's happened:
As "always" i did my weekly kernel+userland compilation this noon, and i was running in an endless loop in wait4() when compiling insn-attrtab.i (thought preprocessor hung, but it's later). Note i (yet) use(d) a very primitive compilation approach - i simply do 'make all', which sometimes requires changes by hand (e.g. today drop of SO_JUMBO in kdump). *This* is only a fellow traveler virtual box, and doing the full rebuild blocks normal work out some hours longer, so.. I had not yet time to check this on a real box. Anyway, kernel compilation was successful, and (after reboot) much of userland (e.g. libC, crypto etc. - one week of work), too. But then i ran in an endless (busy) wait4() upon compilation of gnu/usr.bin/cc/cc_int/obj/insn-attrtab: 68 -rw------- 1 steffen wsrc 68981 Mar 19 16:34 ktrace.out 1844 gcc NAMI "/usr/lib/gcc-lib/amd64-unknown-openbsd5.1/4.2.1/cc1" 1844 gcc RET access 0 1844 gcc CALL sigprocmask(SIG_BLOCK,~0<>) 1844 gcc RET sigprocmask 0<> 1844 gcc CALL mprotect(0x72f000,0x2000,0x3<PROT_READ|PROT_WRITE>) 1844 gcc RET mprotect 0 1844 gcc CALL mprotect(0x72f000,0x2000,0x1<PROT_READ>) 1844 gcc RET mprotect 0 1844 gcc CALL sigprocmask(SIG_SETMASK,0<>) 1844 gcc RET sigprocmask ~0x10100<SIGKILL|SIGSTOP> 1844 gcc CALL vfork() 1844 gcc RET vfork 24913/0x6151 1844 gcc CALL sigprocmask(SIG_BLOCK,~0<>) 1844 gcc RET sigprocmask 0<> 1844 gcc CALL mprotect(0x72f000,0x2000,0x3<PROT_READ|PROT_WRITE>) 1844 gcc RET mprotect 0 1844 gcc CALL mprotect(0x72f000,0x2000,0x1<PROT_READ>) 1844 gcc RET mprotect 0 1844 gcc CALL sigprocmask(SIG_SETMASK,0<>) 1844 gcc RET sigprocmask ~0x10100<SIGKILL|SIGSTOP> 1844 gcc CALL sigprocmask(SIG_BLOCK,~0<>) 1844 gcc RET sigprocmask 0<> 1844 gcc CALL mprotect(0x20c610000,0x2000,0x3<PROT_READ|PROT_WRITE>) 1844 gcc RET mprotect 0 1844 gcc CALL mprotect(0x20c610000,0x2000,0x1<PROT_READ>) 1844 gcc RET mprotect 0 1844 gcc CALL sigprocmask(SIG_SETMASK,0<>) 1844 gcc RET sigprocmask ~0x10100<SIGKILL|SIGSTOP> 1844 gcc CALL wait4(0x6151,0x208e980d0,0<>,0) >> ENDLESS BUSY LOOP, ^C HERE << 1844 gcc PSIG SIGINT caught handler=0x40b210 mask=0<> 1844 gcc RET wait4 RESTART 1844 gcc CALL sigaction(SIGINT,0x7f7fffff0e10,0x7f7fffff0e00) I've moved the fresh libC to /usr/lib, but that results in the very same problem. Ditto last week's kernel. Puke! I had to run a debugger :-((: (gdb) break vfork Breakpoint 1 at 0x401a50 (gdb) run Starting program: /usr/bin/gcc -O2 -DIN_GCC -DHAVE_CONFIG_H -DPREFIX="/usr" -I/home/src/gnu/usr.bin/cc/cc_int/obj/../cc_tools -I/home/src/gnu/usr.bin/cc/cc_int/../cc_tools -I/home/src/gnu/usr.bin/cc/cc_int/../../../gcc/gcc -I/home/src/gnu/usr.bin/cc/cc_int/../../../gcc/gcc/config -I/home/src/gnu/usr.bin/cc/cc_int/../../../gcc/include -I/home/src/gnu/usr.bin/cc/cc_int/../../../gcc/libcpp/include -I/home/src/gnu/usr.bin/cc/cc_int/../../../gcc/libdecnumber -c ../cc_tools/insn-attrtab.c -o insn-attrtab.o.o Breakpoint 1 at 0x2088b0f90 Breakpoint 1, 0x00000002088b0f90 in vfork () from /usr/lib/libc.so.62.0 (gdb) step Single stepping until exit from function vfork, which has no line number information. gcc: Internal error: Trace/BPT trap (program cc1) Please submit a full bug report. See <URL:http://gcc.gnu.org/bugs.html> for instructions. Program exited with code 01. The old libc.so.62.0 is from monday last week, the new from today. I'll append a dmesg of this VirtualBox. Well; unless there is interest in something i'll do a complete cleanup and recompile tomorrow. I would report if the problem remains, then. (I use my own homebrew environment since a decade, and have no experiences with - spew - debuggers. Just for info.) --steffen Forza Figa! OpenBSD 5.1-current (GENERIC) #13: Mon Mar 19 12:13:01 CET 2012 sdaoden@obsd.sherwood:/home/src/sys/arch/amd64/compile/GENERIC real mem = 133103616 (126MB) avail mem = 107405312 (102MB) mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.5 @ 0xe1000 (5 entries) bios0: vendor innotek GmbH version "VirtualBox" date 12/01/2006 bios0: innotek GmbH VirtualBox acpi0 at bios0: rev 2 acpi0: sleep states S0 S5 acpi0: tables DSDT FACP APIC SSDT acpi0: wakeup devices acpitimer0 at acpi0: 3579545 Hz, 32 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM)2 Duo CPU P7550 @ 2.26GHz, 1974.41 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,MWAIT,SSSE3,NXE,LONG,LAHF cpu0: 3MB 64b/line 8-way L2 cache cpu0: apic clock running at 999MHz ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 11, 24 pins ioapic0: misconfigured as apic 0, remapped to apid 1 acpiprt0 at acpi0: bus 0 (PCI0) acpicpu0 at acpi0 acpibat0 at acpi0: BAT0 model "1" serial 0 type VBOX oem "innotek" acpiac0 at acpi0: AC unit online pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02 pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00 pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility wd0 at pciide0 channel 0 drive 0: <VBOX HARDDISK> wd0: 128-sector PIO, LBA, 15719MB, 32192512 sectors wd0(pciide0:0:0): using PIO mode 4, DMA mode 2 atapiscsi0 at pciide0 channel 1 drive 0 scsibus0 at atapiscsi0: 2 targets cd0 at scsibus0 targ 0 lun 0: <VBOX, CD-ROM, 1.0> ATAPI 5/cdrom removable cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 vga1 at pci0 dev 2 function 0 "InnoTek VirtualBox Graphics Adapter" rev 0x00 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) em0 at pci0 dev 3 function 0 "Intel PRO/1000MT (82540EM)" rev 0x02: apic 1 int 19, address 08:00:27:5a:37:cb "InnoTek VirtualBox Guest Service" rev 0x00 at pci0 dev 4 function 0 not configured auich0 at pci0 dev 5 function 0 "Intel 82801AA AC97" rev 0x01: apic 1 int 21, ICH AC97 ac97: codec id 0x83847600 (SigmaTel STAC9700) audio0 at auich0 ohci0 at pci0 dev 6 function 0 "Apple Intrepid USB" rev 0x00: apic 1 int 22, version 1.0 piixpm0 at pci0 dev 7 function 0 "Intel 82371AB Power" rev 0x08: SMBus disabled isa0 at pcib0 isadma0 at isa0 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 pms0 at pckbc0 (aux slot) pckbc0: using irq 12 for aux slot wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 usb0 at ohci0: USB revision 1.0 uhub0 at usb0 "Apple OHCI root hub" rev 1.00/1.00 addr 1 mtrr: CPU supports MTRRs but not enabled vscsi0 at root scsibus1 at vscsi0: 256 targets softraid0 at root scsibus2 at softraid0: 256 targets root on wd0a (862708ede2409c81.a) swap on wd0b dump on wd0b
