tree c777fd8a5fc44492971ac51f8299c4cbfb52f175
parent 2ec5e3a867d63d04932e11c6097f63760d9be3fe
author Randy Dunlap <rdunlap@xenotime.net> 1141865168 -0800
committer David S. Miller <davem@davemloft.net> 1141865168 -0800

[NET] compat ifconf: fix limits

A recent change to compat. dev_ifconf() in fs/compat_ioctl.c
causes ifconf data to be truncated 1 entry too early when copying it
to userspace.  The correct amount of data (length) is returned,
but the final entry is empty (zero, not filled in).
The for-loop 'i' check should use <= to allow the final struct
ifreq32 to be copied.  I also used the ifconf-corruption program
in kernel bugzilla #4746 to make sure that this change does not
re-introduce the corruption.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>