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net: fool proof dev_valid_name()
authorEric Dumazet <edumazet@google.com>
Thu, 5 Apr 2018 13:39:26 +0000 (06:39 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 13 Apr 2018 17:52:24 +0000 (19:52 +0200)
commitf377efac04e88a9fcfe1332c7d590398cf320553
tree0f4e3109d8f98a25d1a9096a34698fe612ded575tree | snapshot
parent8666081f2b185994e799f8c3abb655749b46db61commit | diff
net: fool proof dev_valid_name()

[ Upstream commit a9d48205d0aedda021fc3728972a9e9934c2b9de ]

We want to use dev_valid_name() to validate tunnel names,
so better use strnlen(name, IFNAMSIZ) than strlen(name) to make
sure to not upset KASAN.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/core/dev.c diff | blob | blame | history
Arne's tree of linux kernel.