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

[Guido Günther]

Hi Vincent,
On Wed, May 05, 2010 at 04:26:33PM +1000, Vincent McIntyre wrote:
> 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.
Could you run multipathd under valgrind please?
Cheers,
 -- Guido