Re: Sig 11 Segfault in net/net-snmp net-snmp-5.1.3p4 in 4.0/i386

With debugging symbols:

#0  0x008b8d71 in memmove () from /usr/lib/libc.so.39.3
#1  0x0ecaaf7e in snmp_set_var_objid (vp=0x2c, objid=0x7d8c7018, 
name_length=11) at snmp_client.c:652
#2  0x0ecd1bac in snmp_varlist_add_variable (varlist=0x87618844, 
name=0x7d8c7018, name_length=11, type=5 '\005', value=0x0,
     len=0) at snmp_api.c:6259
#3  0x0ecd1b3c in snmp_pdu_add_variable (pdu=0x87618800, name=0x7d8c7018, 
name_length=11, type=5 '\005', value=0x0, len=0)
     at snmp_api.c:6232
#4  0x0ecaa87b in snmp_add_null_var (pdu=0x87618800, name=0x7d8c7018, 
name_length=11) at snmp_client.c:157
#5  0x01bcdb35 in mte_run_trigger (clientreg=1) at 
disman/mteTriggerTable.c:3309
#6  0x0ecea9c3 in run_alarms () at snmp_alarm.c:248
#7  0x1c003da5 in SnmpdCatchRandomSignal ()
#8  0x1c003204 in SnmpdCatchRandomSignal ()
#9  0x1c001ea0 in ?? ()
#10 0x00000005 in ?? ()
#11 0xcf7f7df4 in ?? ()
#12 0xcf7f7e0c in ?? ()
#13 0x1c001e31 in ?? ()
#14 0xcf7f7f6c in ?? ()
#15 0xcf7f7dd0 in ?? ()
#16 0x1c001885 in ?? ()
#17 0x1c001e8e in ?? ()
#18 0x00000000 in ?? ()


Running it in -f -D -L now ~BAS

On Mon, 11 Dec 2006, Brian A. Seklecki wrote:

>
> I've got a pretty consistent segfault:
>
> root@br0:/home/seklecki# gdb /usr/local/sbin/snmpd /home/seklecki/snmpd.core
>
> Core was generated by `snmpd'.
> Program terminated with signal 11, Segmentation fault.
> Reading symbols from /usr/local/lib/libnetsnmpagent.so.6.3...(no debugging 
> symbols found)...done.
> Loaded symbols for /usr/local/lib/libnetsnmpagent.so.6.3
> Reading symbols from /usr/local/lib/libnetsnmpmibs.so.6.3...done.
> Loaded symbols for /usr/local/lib/libnetsnmpmibs.so.6.3
> Reading symbols from /usr/local/lib/libnetsnmphelpers.so.6.3...done.
> Loaded symbols for /usr/local/lib/libnetsnmphelpers.so.6.3
> Reading symbols from /usr/lib/libwrap.so.4.0...done.
> Loaded symbols for /usr/lib/libwrap.so.4.0
> Reading symbols from /usr/local/lib/libnetsnmp.so.6.3...done.
> Loaded symbols for /usr/local/lib/libnetsnmp.so.6.3
> Reading symbols from /usr/lib/libkvm.so.8.0...done.
> Loaded symbols for /usr/lib/libkvm.so.8.0
> Reading symbols from /usr/lib/libz.so.4.1...done.
> Loaded symbols for /usr/lib/libz.so.4.1
> Reading symbols from /usr/lib/libcrypto.so.13.0...done.
> Loaded symbols for /usr/lib/libcrypto.so.13.0
> Reading symbols from /usr/lib/libm.so.2.3...done.
> Loaded symbols for /usr/lib/libm.so.2.3
> Reading symbols from /usr/lib/libc.so.39.3...done.
> Loaded symbols for /usr/lib/libc.so.39.3
> Reading symbols from /usr/libexec/ld.so...done.
> Loaded symbols for /usr/libexec/ld.so
>
> #0  0x089b3d71 in memmove () from /usr/lib/libc.so.39.3
> (gdb) bt
> #0  0x089b3d71 in memmove () from /usr/lib/libc.so.39.3
> #1  0x0cf6bede in snmp_set_var_objid () from /usr/local/lib/libnetsnmp.so.6.3
> #2  0x0cf92b0c in snmp_varlist_add_variable () from 
> /usr/local/lib/libnetsnmp.so.6.3
> #3  0x0cf92a9c in snmp_pdu_add_variable () from 
> /usr/local/lib/libnetsnmp.so.6.3
> #4  0x0cf6b7db in snmp_add_null_var () from /usr/local/lib/libnetsnmp.so.6.3
> #5  0x08757bf5 in mte_run_trigger () from 
> /usr/local/lib/libnetsnmpmibs.so.6.3
> #6  0x0cfab923 in run_alarms () from /usr/local/lib/libnetsnmp.so.6.3
> #7  0x1c003da5 in SnmpdCatchRandomSignal ()
> #8  0x1c003204 in SnmpdCatchRandomSignal ()
> #9  0x1c001ea0 in ?? ()
> #10 0x00000005 in ?? ()
> #11 0xcf7df148 in ?? ()
> #12 0xcf7df160 in ?? ()
> #13 0x1c001e31 in ?? ()
> #14 0xcf7df2bc in ?? ()
> #15 0xcf7df124 in ?? ()
> #16 0x1c001885 in ?? ()
> #17 0x1c001e8e in ?? ()
> #18 0x00000000 in ?? ()
> (gdb)
>
> This system 4.0-stable as of last Wednesday with a slightly modified kernel 
> (RAIDFrame enabled):
>
> root@br0:/home/seklecki# uname -a
> OpenBSD br0 4.0 GENERIC+RAIDFrame#2 i386 (full dmesg below)
>
> I will try to recompile Net-SNMP from source to see if the mismatch between 
> GENERIC and the "recommended" 4.0 binaries is the cause.  I will also try to 
> figure out why it's only partially being built with debugging symbols.
>
> ~BAS
>
> l8*
> 	-lava (Brian A. Seklecki - Pittsburgh, PA, USA)
> 	       http://www.spiritual-machines.org/
>
> "...from back in the heady days when "helpdesk" meant nothing, "diskquota"
> meant everything, and lives could be bought and sold for a couple of pages
> of laser printout - and frequently were."
>
> OpenBSD 4.0-stable (GENERIC+RAIDFrame) #2: Wed Dec  6 22:26:09 EST 2006
>    root@br0:/usr/src/sys/arch/i386/compile/GENERIC+RAIDFrame
> cpu0: Intel(R) Xeon(TM) CPU 3.00GHz ("GenuineIntel" 686-class) 3 GHz
> cpu0: 
> FPU,V86,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,SBF,
> SSE3,MWAIT,DS-CPL,CNXT-ID,CX16
> real mem  = 534921216 (522384K)
> avail mem = 479571968 (468332K)
> using 4256 buffers containing 26849280 bytes (26220K) of memory
> mainbus0 (root)
> bios0 at mainbus0: AT/286+(00) BIOS, date 08/18/05, BIOS32 rev. 0 @ 0xffe90, 
> SMBIOS rev. 2.3 @ 0xf0450 (92 entries)
> bios0: Dell Inc. PowerEdge SC1420
> apm0 at bios0: Power Management spec V1.2
> apm0: AC on, battery charge unknown
> apm0: flags 30102 dobusy 0 doidle 1
> pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
> pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfeb00/256 (14 entries)
> pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801EB/ER LPC" rev 0x00)
> pcibios0: PCI bus #6 is the last bus
> bios0: ROM list: 0xc0000/0x8000 0xc8000/0x800 0xc8800/0x1800! 0xca000/0x2000
> cpu0 at mainbus0
> pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> pchb0 at pci0 dev 0 function 0 "Intel E7520 MCH" rev 0x09
> "Intel E7520 MCH ERR" rev 0x09 at pci0 dev 0 function 1 not configured
> ppb0 at pci0 dev 2 function 0 "Intel MCH PCIE" rev 0x09
> pci1 at ppb0 bus 1
> ppb1 at pci1 dev 0 function 0 "Intel PCIE-PCIE" rev 0x00
> pci2 at ppb1 bus 2
> vga1 at pci2 dev 12 function 0 "ATI Mach64 GO" rev 0x27
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> ppb2 at pci1 dev 0 function 2 "Intel PCIE-PCIE" rev 0x00
> pci3 at ppb2 bus 3
> xl0 at pci3 dev 13 function 0 "3Com 3c905C 100Base-TX" rev 0x74: irq 10, 
> address 00:50:da:28:37:7f
> bmtphy0 at xl0 phy 24: Broadcom 3C905C internal PHY, rev. 6
> em0 at pci3 dev 14 function 0 "Intel PRO/1000MT (82545GM)" rev 0x04: irq 11, 
> address 00:12:3f:61:7a:75
> ppb3 at pci0 dev 3 function 0 "Intel MCH PCIE" rev 0x09
> pci4 at ppb3 bus 4
> ppb4 at pci0 dev 4 function 0 "Intel MCH PCIE" rev 0x09
> pci5 at ppb4 bus 5
> uhci0 at pci0 dev 29 function 0 "Intel 82801EB/ER USB" rev 0x02: irq 11
> usb0 at uhci0: USB revision 1.0
> uhub0 at usb0
> uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
> uhub0: 2 ports with 2 removable, self powered
> uhci1 at pci0 dev 29 function 1 "Intel 82801EB/ER USB" rev 0x02: irq 10
> usb1 at uhci1: USB revision 1.0
> uhub1 at usb1
> uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
> uhub1: 2 ports with 2 removable, self powered
> uhci2 at pci0 dev 29 function 2 "Intel 82801EB/ER USB" rev 0x02: irq 9
> usb2 at uhci2: USB revision 1.0
> uhub2 at usb2
> uhub2: Intel UHCI root hub, rev 1.00/1.00, addr 1
> uhub2: 2 ports with 2 removable, self powered
> uhci3 at pci0 dev 29 function 3 "Intel 82801EB/ER USB" rev 0x02: irq 11
> usb3 at uhci3: USB revision 1.0
> uhub3 at usb3
> uhub3: Intel UHCI root hub, rev 1.00/1.00, addr 1
> uhub3: 2 ports with 2 removable, self powered
> ehci0 at pci0 dev 29 function 7 "Intel 82801EB/ER USB2" rev 0x02: irq 5
> usb4 at ehci0: USB revision 2.0
> uhub4 at usb4
> uhub4: Intel EHCI root hub, rev 2.00/1.00, addr 1
> uhub4: 8 ports with 8 removable, self powered
> ppb5 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0xc2
> pci6 at ppb5 bus 6
> ichpcib0 at pci0 dev 31 function 0 "Intel 82801EB/ER LPC" rev 0x02
> pciide0 at pci0 dev 31 function 1 "Intel 82801EB/ER IDE" rev 0x02: DMA, 
> channel 0 configured to compatibility, channel 1 conf
> igured to compatibility
> pciide0: channel 0 ignored (disabled)
> atapiscsi0 at pciide0 channel 1 drive 0
> scsibus0 at atapiscsi0: 2 targets
> cd0 at scsibus0 targ 0 lun 0: <LITE-ON, CD-ROM LTN-489S, 8DS2> SCSI0 5/cdrom 
> removable
> cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> pciide1 at pci0 dev 31 function 2 "Intel 82801EB SATA" rev 0x02: DMA, channel 
> 0 configured to native-PCI, channel 1 configure
> d to native-PCI
> pciide1: using irq 9 for native-PCI interrupt
> wd0 at pciide1 channel 0 drive 0: <WDC WD800JD-75LSA0>
> wd0: 16-sector PIO, LBA48, 76293MB, 156250000 sectors
> wd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 5
> wd1 at pciide1 channel 1 drive 0: <WDC WD800JD-75LSA0>
> wd1: 16-sector PIO, LBA48, 76293MB, 156250000 sectors
> wd1(pciide1:1:0): using PIO mode 4, Ultra-DMA mode 5
> ichiic0 at pci0 dev 31 function 3 "Intel 82801EB/ER SMBus" rev 0x02: irq 10
> iic0 at ichiic0
> adt0 at iic0 addr 0x2e: emc6w201 rev 0xb1
> isa0 at ichpcib0
> 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
> pcppi0 at isa0 port 0x61
> midi0 at pcppi0: <PC speaker>
> spkr0 at pcppi0
> lpt0 at isa0 port 0x378/4 irq 7
> npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
> pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> pccom0: console
> pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> biomask ff65 netmask ff65 ttymask ffe7
> pctr: user-level cycle counter enabled
> Kernelized RAIDframe activated
> cd0(atapiscsi0:0:0): Check Condition (error 0x70) on opcode 0x0
>    SENSE KEY: Not Ready
>     ASC/ASCQ: Medium Not Present
> raid0 (root): (RAID Level 1) total number of sectors is 4194176 (2047 MB)
> raid1 (root): (RAID Level 1) total number of sectors is 151791744 (74117 MB) 
> as root
> dkcsum: wd0 matches BIOS drive 0x80
> dkcsum: wd1 matches BIOS drive 0x81
> swapmount: no device
> carp: pfsync0 demoted group carp to 1
>
>

l8*
 	-lava (Brian A. Seklecki - Pittsburgh, PA, USA)
 	       http://www.spiritual-machines.org/

"...from back in the heady days when "helpdesk" meant nothing, "diskquota"
meant everything, and lives could be bought and sold for a couple of pages
of laser printout - and frequently were."

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