[dpdk-dev] [Bug 320] mlx4: info get fails in secondary process

[Stephen Hemminger]

On Fri, 12 Jul 2019 20:04:26 +0000
bugzilla at dpdk.org wrote:

> https://bugs.dpdk.org/show_bug.cgi?id=320
> 
>             Bug ID: 320
>            Summary: mlx4: info get fails in secondary process
>            Product: DPDK
>            Version: 19.08
>           Hardware: All
>                 OS: All
>             Status: UNCONFIRMED
>           Severity: normal
>           Priority: Normal
>          Component: other
>           Assignee: dev at dpdk.org
>           Reporter: stephen at networkplumber.org
>   Target Milestone: ---
> 
> Attempts to do dev_info_get in secondary process fail because the driver handle
> to infiniband (priv->ctx) is not valid in secondary process. This leads to:
> 
> #0  0x00007ffff5d06ab4 in _IO_vfprintf_internal (s=s at entry=0x7fffffffe3c0,
> format=<optimized out>, format at entry=0x7ffff496a605 "%s/device/net",
> ap=ap at entry=0x7fffffffe528) at vfprintf.c:1635
> #1  0x00007ffff5d32599 in _IO_vsnprintf (string=0x7fffffffe4b0 "",
> maxlen=<optimized out>, format=0x7ffff496a605 "%s/device/net",
> args=args at entry=0x7fffffffe528) at vsnprintf.c:119
> #2  0x00007ffff5d0fd32 in __snprintf (s=s at entry=0x0, maxlen=maxlen at entry=0,
> format=format at entry=0x7ffff496a605 "%s/device/net") at snprintf.c:34
> #3  0x00007ffff4720b8b in mlx4_get_ifname (priv=priv at entry=0xc0137e93c0,
> ifname=ifname at entry=0x7fffffffe690) at
> /usr/src/redhat/BUILD/dpdk-18.11/drivers/net/mlx4/mlx4_ethdev.c:71
> #4  0x00007ffff47214e4 in mlx4_dev_infos_get (dev=<optimized out>,
> info=0x7fffffffe6e0) at
> /usr/src/redhat/BUILD/dpdk-18.11/drivers/net/mlx4/mlx4_ethdev.c:583
> #5  0x00007ffff44b896c in rte_eth_dev_info_get (port_id=port_id at entry=0,
> dev_info=dev_info at entry=0x7fffffffe6e0) at
> /usr/src/redhat/BUILD/dpdk-18.11/lib/librte_ethdev/rte_ethdev.c:2532
> 

I am testing a patch for this.