Bug#580312: multipath-tools: multipathd segfaults when restarted

[Vincent McIntyre]

Package: multipath-tools
Version: 0.4.8-14+lenny2
Severity: normal

*** Please type your report below this line ***

I have a simple setup with a Promise VTrak E610f direct-connected
to a Dell 2950 with LSI FC949SE card. There is only one FC connection.
Two LUNs are exposed by the Promise.

# multipath -l
mpath1 (2227300015530e20d) dm-1 Promise ,VTrak E610f 
[size=13T][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=0][active]
  \_ 0:0:0:1 sdf 8:80  [active][undef]
  mpath0 (2228f000155e2acda) dm-0 Promise ,VTrak E610f
  [size=13T][features=1 queue_if_no_path][hwhandler=0]
  \_ round-robin 0 [prio=0][active]
   \_ 0:0:0:0 sda 8:0   [active][undef]

When rebooting, or sometimes doing /etc/init.d/multipath-tools restart,
multipathd segfaults, e.g.
   kernel: [  511.240204] multipathd[6331]: segfault at ffffffff00645a68 ip 7ffe3777ea0e sp 4000fd30 error 4 in libc-2.7.so[7ffe3770b000+14a000]

and another
   kernel: [ 1150.730222] multipathd[6379]: segfault at a ip 7f02665569fb sp 7fffffffe0a0 error 4 in libc-2.7.so[7f02664e3000+14a000]

It doesn't occur reliably.
I've tried with and without the /dev/mapper/mpathN-part1 partitions 
mounted. I haven't tried restarting/rebooting when under load.

This may be the same bug as 519252. If so, it seems it isn't quite fixed.
I have a system available for testing but it needs to run lenny packages
or lenny-backports in a pinch.

Kind regards
Vince

-- Package-specific info:
Contents of /etc/multipath.conf:
defaults {
 	user_friendly_names	yes
}
blacklist {
 	devnode	"^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
 	devnode	"^hd[a-z][[0-9]*]"
 	devnode	"^cciss!c[0-9]d[0-9]*[p[0-9]*]"
 	device {
 		vendor MegaRAID
 	}
 	device {
 		vendor APPLE
 	}
 	device {
 		vendor ATA
 	}
 	device {
 		vendor DELL
 	}
}
devices {
 	device {
 		vendor			"Promise"
 		product			"VTrak"
 		path_grouping_policy	multibus
 		getuid_callout		"/lib/udev/scsi_id -g -u -s /block/%n"
 		path_checker		readsector0
 		path_selector		"round-robin 0"
 		hardware_handler	"0"
 		failback		immediate
 		rr_weight		uniform
 		rr_min_io		100
 		no_path_retry		20
 		features		"1 queue_if_no_path"
 		product_blacklist	"VTrak V-LUN"
 	}
}


-- System Information:
Debian Release: 5.0.4
   APT prefers stable
   APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages multipath-tools depends on:
ii  initscripts              2.86.ds1-61     Scripts for initializing and shutt
ii  kpartx                   0.4.8-14+lenny2 create device mappings for partiti
ii  libaio1                  0.3.107-3       Linux kernel AIO access library - 
ii  libc6                    2.7-18lenny2    GNU C Library: Shared libraries
ii  libdevmapper1.02.1       2:1.02.27-4     The Linux Kernel Device Mapper use
ii  libncurses5              5.7+20081213-1  shared libraries for terminal hand
ii  libreadline5             5.2-3.1         GNU readline and history libraries
ii  lsb-base                 3.2-20          Linux Standard Base 3.2 init scrip
ii  udev                     0.125-7+lenny3  /dev/ and hotplug management daemo

multipath-tools recommends no packages.

Versions of packages multipath-tools suggests:
pn  multipath-tools-boot          <none>     (no description available)

-- no debconf information