[Bug 1509863] Re: Syscall param ioctl(SIOCGIFINDEX) points to uninitialised byte(s) in GetNetworkInterfaceIndexByName

[Sebastien Bacher]

Thanks, maybe you could report the issue upstream on
http://www.avahi.org/report ?

** Changed in: avahi (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1509863

Title:
  Syscall param ioctl(SIOCGIFINDEX) points to uninitialised byte(s) in
  GetNetworkInterfaceIndexByName

Status in avahi package in Ubuntu:
  New

Bug description:
  Issuing two dbus method calls of GetNetworkInterfaceIndexByName, first
  with a short string and then with a long one, makes avahi-daemon point
  to uninitialised bytes when calling ioctl(SIOCGIFINDEX), according to
  valgrind.

  DEBUG:root:TEST #1201: org.freedesktop.Avahi / org.freedesktop.Avahi.Server->GetNetworkInterfaceIndexByName with (('en0',),)
  DEBUG:root:TEST #1202: org.freedesktop.Avahi / org.freedesktop.Avahi.Server->GetNetworkInterfaceIndexByName with (('AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA',),)

  ==7836== Syscall param ioctl(SIOCGIFINDEX) points to uninitialised byte(s)
  ==7836==    at 0x6206337: ioctl (syscall-template.S:81)
  ==7836==    by 0x6228076: if_nametoindex (if_index.c:48)
  ==7836==    by 0x40EAE0: msg_server_impl (dbus-protocol.c:376)
  ==7836==    by 0x5ACBE95: ??? (in /lib/x86_64-linux-gnu/libdbus-1.so.3.7.6)
  ==7836==    by 0x5ABEA20: dbus_connection_dispatch (in /lib/x86_64-linux-gnu/libdbus-1.so.3.7.6)
  ==7836==    by 0x414B35: dispatch_timeout_callback (dbus-watch-glue.c:105)
  ==7836==    by 0x4E3E647: avahi_simple_poll_dispatch (in /usr/lib/x86_64-linux-gnu/libavahi-common.so.3.5.3)
  ==7836==    by 0x406FD9: main (main.c:1256)
  ==7836==  Address 0xfff0004b0 is on thread 1's stack
  ==7836==  Uninitialised value was created by a stack allocation
  ==7836==    at 0x405D60: ??? (in /tmp/avahi-daemon-noasan)
  ==7836==

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