[Qemu-devel] [Bug 676029] [NEW] Silently fail with wrong vde socket dir

[Qemu-devel] [Bug 676029] [NEW] Silently fail with wrong vde socket dir

[Étienne BERSAC]

Public bug reported:

Hi,

Using qemu 0.12.5, kvm silently fail with exit code 1 when using -net
vde and a wrong path for sock. Actually, the sock option is mean to be
the socket dir of the vde_switch, not the socket itself.

With -net vde,sock=/var/run/vde/vde0/ctl , strace ends with the
following messages :

connect(7, {sa_family=AF_FILE, path="/var/run/vde/vde0/ctl/ctl"}, 110) = -1 ENOTDIR (Not a directory)
close(7)                                = 0
close(8)                                = 0
exit_group(1)                           = ?
root ~# 

Please add a meaningful message.

Regards,
Étienne

** Affects: qemu
     Importance: Undecided
         Status: New

-- 
Silently fail with wrong vde socket dir
https://bugs.launchpad.net/bugs/676029
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Status in QEMU: New

Bug description:
Hi,

Using qemu 0.12.5, kvm silently fail with exit code 1 when using -net vde and a wrong path for sock. Actually, the sock option is mean to be the socket dir of the vde_switch, not the socket itself.

With -net vde,sock=/var/run/vde/vde0/ctl , strace ends with the following messages :

connect(7, {sa_family=AF_FILE, path="/var/run/vde/vde0/ctl/ctl"}, 110) = -1 ENOTDIR (Not a directory)
close(7)                                = 0
close(8)                                = 0
exit_group(1)                           = ?
root ~# 

Please add a meaningful message.

Regards,
Étienne

[Qemu-devel] [Bug 676029] Re: Silently fail with wrong vde socket dir

[Jes Sorensen]

Hello,

Could you please provide more data, what kinda of system and version are
you running on?

Jes

-- 
Silently fail with wrong vde socket dir
https://bugs.launchpad.net/bugs/676029
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: New

Bug description:
Hi,

Using qemu 0.12.5, kvm silently fail with exit code 1 when using -net vde and a wrong path for sock. Actually, the sock option is mean to be the socket dir of the vde_switch, not the socket itself.

With -net vde,sock=/var/run/vde/vde0/ctl , strace ends with the following messages :

connect(7, {sa_family=AF_FILE, path="/var/run/vde/vde0/ctl/ctl"}, 110) = -1 ENOTDIR (Not a directory)
close(7)                                = 0
close(8)                                = 0
exit_group(1)                           = ?
root ~# 

Please add a meaningful message.

Regards,
Étienne

[Qemu-devel] [Bug 676029] Re: Silently fail with wrong vde socket dir

[Michael Tokarev]

There's no need to add any more specific information.  The bug's in the
code in qemu.

net/vde.c:

static int net_vde_init(VLANState *vlan, const char *model,
                        const char *name, const char *sock,
                        int port, const char *group, int mode)
{
...
    vde = vde_open(init_sock, (char *)"QEMU", &args);
    if (!vde){
        return -1;
    }
...
}

There's no message generated there.  Callers merely pass the failure up
the road, where it's finally handled as exit(1).  If _anything_ is wrong
in vde_open() (which can fail due to variety of reasons, including wrong
path to the listening socket and what not), nothing will indicate that,
just a trivial, silent exit.

** Changed in: qemu
       Status: New => Confirmed

-- 
Silently fail with wrong vde socket dir
https://bugs.launchpad.net/bugs/676029
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Confirmed

Bug description:
Hi,

Using qemu 0.12.5, kvm silently fail with exit code 1 when using -net vde and a wrong path for sock. Actually, the sock option is mean to be the socket dir of the vde_switch, not the socket itself.

With -net vde,sock=/var/run/vde/vde0/ctl , strace ends with the following messages :

connect(7, {sa_family=AF_FILE, path="/var/run/vde/vde0/ctl/ctl"}, 110) = -1 ENOTDIR (Not a directory)
close(7)                                = 0
close(8)                                = 0
exit_group(1)                           = ?
root ~# 

Please add a meaningful message.

Regards,
Étienne

[Qemu-devel] [Bug 676029] Re: Silently fail with wrong vde socket dir

[Jes Sorensen]

Given that you know what the problem is, it would probably have been
faster to post a patch than just updating the bug and marking it
confirmed....

-- 
Silently fail with wrong vde socket dir
https://bugs.launchpad.net/bugs/676029
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

Status in QEMU: Confirmed

Bug description:
Hi,

Using qemu 0.12.5, kvm silently fail with exit code 1 when using -net vde and a wrong path for sock. Actually, the sock option is mean to be the socket dir of the vde_switch, not the socket itself.

With -net vde,sock=/var/run/vde/vde0/ctl , strace ends with the following messages :

connect(7, {sa_family=AF_FILE, path="/var/run/vde/vde0/ctl/ctl"}, 110) = -1 ENOTDIR (Not a directory)
close(7)                                = 0
close(8)                                = 0
exit_group(1)                           = ?
root ~# 

Please add a meaningful message.

Regards,
Étienne

[Qemu-devel] [Bug 676029] Re: Silently fail with wrong vde socket dir

[Thomas Huth]

A fix for this problem has finally been contributed here:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=7587855cd23755a7a6bd

** Changed in: qemu
       Status: Confirmed => Fix Released

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/676029

Title:
  Silently fail with wrong vde socket dir

Status in QEMU:
  Fix Released

Bug description:
  Hi,

  Using qemu 0.12.5, kvm silently fail with exit code 1 when using -net
  vde and a wrong path for sock. Actually, the sock option is mean to be
  the socket dir of the vde_switch, not the socket itself.

  With -net vde,sock=/var/run/vde/vde0/ctl , strace ends with the
  following messages :

  connect(7, {sa_family=AF_FILE, path="/var/run/vde/vde0/ctl/ctl"}, 110) = -1 ENOTDIR (Not a directory)
  close(7)                                = 0
  close(8)                                = 0
  exit_group(1)                           = ?
  root ~# 

  Please add a meaningful message.

  Regards,
  Étienne

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