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authorVegard Nossum <vegard.nossum@oracle.com>2016-07-05 21:12:53 +0200
committerDavid S. Miller <davem@davemloft.net>2016-07-05 14:08:47 -0700
commitab58298cf459fcd4f588a401d36abf0bd2215b51 (patch)
tree58c77416b58a2b50ff681d1e3fde2444d17fdc98 /tools
parentf5d6516120ee5c777fb7b1ba9d39031881ad511b (diff)
downloadlinux-ab58298cf459fcd4f588a401d36abf0bd2215b51.tar.gz
net: fix decnet rtnexthop parsing
dn_fib_count_nhs() could enter an infinite loop if nhp->rtnh_len == 0 (i.e. if userspace passes a malformed netlink message). Let's use the helpers from net/nexthop.h which take care of all this stuff. We can do exactly the same as e.g. fib_count_nexthops() and fib_get_nhs() from net/ipv4/fib_semantics.c. This fixes the softlockup for me. Cc: Thomas Graf <tgraf@suug.ch> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
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