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authorEric Dumazet <edumazet@google.com>2018-04-04 08:35:10 -0700
committerDavid S. Miller <davem@davemloft.net>2018-04-04 12:04:59 -0400
commit3d23401283e80ceb03f765842787e0e79ff598b7 (patch)
treea07bee3cbc8781374c747f6cbb20c51d6a650aad /net/ieee802154
parent4b2e6877b8793b60abb75c15abaaa4377807a358 (diff)
downloadlinux-3d23401283e80ceb03f765842787e0e79ff598b7.tar.bz2
inet: frags: fix ip6frag_low_thresh boundary
Giving an integer to proc_doulongvec_minmax() is dangerous on 64bit arches, since linker might place next to it a non zero value preventing a change to ip6frag_low_thresh. ip6frag_low_thresh is not used anymore in the kernel, but we do not want to prematuraly break user scripts wanting to change it. Since specifying a minimal value of 0 for proc_doulongvec_minmax() is moot, let's remove these zero values in all defrag units. Fixes: 6e00f7dd5e4e ("ipv6: frags: fix /proc/sys/net/ipv6/ip6frag_low_thresh") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154')
-rw-r--r--net/ieee802154/6lowpan/reassembly.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/net/ieee802154/6lowpan/reassembly.c b/net/ieee802154/6lowpan/reassembly.c
index 44f148a6bb57..1790b65944b3 100644
--- a/net/ieee802154/6lowpan/reassembly.c
+++ b/net/ieee802154/6lowpan/reassembly.c
@@ -411,7 +411,6 @@ err:
}
#ifdef CONFIG_SYSCTL
-static long zero;
static struct ctl_table lowpan_frags_ns_ctl_table[] = {
{
@@ -428,7 +427,6 @@ static struct ctl_table lowpan_frags_ns_ctl_table[] = {
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = proc_doulongvec_minmax,
- .extra1 = &zero,
.extra2 = &init_net.ieee802154_lowpan.frags.high_thresh
},
{