>Synopsis: intermittent double free in smtpd
>Category: system
>Environment:
System : OpenBSD 5.0
Details : OpenBSD 5.0-current (GENERIC) #6: Tue Aug 23 09:39:23 PDT
2011
[email protected]:/usr/src/sys/arch/i386/compile/GENERIC
Architecture: OpenBSD.i386
Machine : i386
>Description:
I run smtpd -vd and occasionally get the following error, upon which smtpd
halts:
smtpd in realloc(): error: chunk is already free 0x81c24200
An example output from smtpd -vd is below:
smtp_new: incoming client on listener: 0x8928f800
session_pickup: greeting client
command: EHLO args: shear.ucar.edu
command: MAIL From args: <[email protected]> SIZE=3182
session_rfc5321_mail_handler: sending notification to mfa
smtp: got imsg_mfa_mail/rcpt
smtp: imsg_queue_create_message returned
command: RCPT To args: <[email protected]>
aliases_exist: 'aiden' exists with 1 expansion nodes
aliases_get: returned 1 aliases
lka_resolve_node: node is local username: irene
smtp: got imsg_queue_commit_envelopes
command: DATA args: (null)
smtp: imsg_queue_message_file returned
smtpd in realloc(): error: chunk is already free 0x81c24200
smtp: got imsg_queue_commit_message
control process exiting
lost child: runner terminated; signal 6
mail delivery agent exiting
queue handler exiting
cb7a2f95: from=<[email protected]>, size=3382, nrcpts=1,
proto=ESMTP, relay=lists.openbsd.org [192.43.244.163]
mail filter exiting
lookup agent exiting
mail transfer agent exiting
smtp server exiting
parent terminating
>How-To-Repeat:
This error is intermittent -- this does not happen on every email
processed.
>Fix:
not known
dmesg:
OpenBSD 5.0-current (GENERIC) #6: Tue Aug 23 09:39:23 PDT 2011
[email protected]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Pentium(R) 4 CPU 2.26GHz ("GenuineIntel" 686-class) 2.28 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,CNXT-ID,xTPR
real mem = 2138570752 (2039MB)
avail mem = 2093527040 (1996MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 08/06/04, BIOS32 rev. 0 @ 0xfa170, SMBIOS
rev. 2.3 @ 0xf0100 (33 entries)
bios0: vendor Award Software International, Inc. version "F5" date 08/06/2004
bios0: Gigabyte Technology Co., Ltd. 8I845GVMRZ
acpi0 at bios0: rev 0
acpi0: sleep states S0 S1 S4 S5
acpi0: tables DSDT FACP APIC
acpi0: wakeup devices SLPB(S5) HUB0(S4) USB0(S1) USB1(S1) USB2(S1) USBE(S1)
PCI0(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 133MHz
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (HUB0)
acpicpu0 at acpi0
acpibtn0 at acpi0: PWRB
acpibtn1 at acpi0: SLPB
bios0: ROM list: 0xc0000/0xb200! 0xcc000/0x1000
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82845G Host" rev 0x03
vga1 at pci0 dev 2 function 0 "Intel 82845G Video" rev 0x03
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
intagp0 at vga1
agp0 at intagp0: aperture at 0xe0000000, size 0x8000000
inteldrm0 at vga1: apic 2 int 16
drm0 at inteldrm0
ppb0 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0x82
pci1 at ppb0 bus 1
em0 at pci1 dev 1 function 0 "Intel PRO/1000GT (82541GI)" rev 0x05: apic 2 int
21, address 00:1b:21:88:f6:1b
ichpcib0 at pci0 dev 31 function 0 "Intel 82801DB LPC" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 82801DB IDE" rev 0x02: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
wd0 at pciide0 channel 0 drive 0: <ST3160021A>
wd0: 16-sector PIO, LBA48, 152627MB, 312581808 sectors
wd1 at pciide0 channel 0 drive 1: <ST3750640A>
wd1: 16-sector PIO, LBA48, 715404MB, 1465149168 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
wd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 5
pciide0: channel 1 disabled (no drives)
ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x02: apic 2 int 17
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 1GB DDR SDRAM non-parity PC3200CL3.0
spdmem1 at iic0 addr 0x51: 1GB DDR SDRAM non-parity PC3200CL3.0
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
spkr0 at pcppi0
it0 at isa0 port 0x2e/2: IT8712F rev 5, EC port 0x290
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
mtrr: Pentium Pro MTRR support
vscsi0 at root
scsibus0 at vscsi0: 256 targets
softraid0 at root
scsibus1 at softraid0: 256 targets
root on wd0a swap on wd0b dump on wd0b
usbdevs:
usbdevs: no USB controllers found
smtpd.conf:
listen on lo0
listen on em0
map "aliases" { source db "/etc/mail/aliases.db" }
accept from all for domain "purplesmoke.org" alias aliases deliver to mda
"procmail -f -"
accept from all for domain "sullivan.in" alias aliases deliver to mda "procmail
-f -"
accept from all for local alias aliases deliver to mda "procmail -f -"
accept from local for all relay
