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author | Florian Westphal <fw@strlen.de> | 2019-06-17 16:02:27 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2019-06-17 16:27:42 -0700 |
commit | 40008e921133f95685ca4dfd7233b3df96af2bd6 (patch) | |
tree | 338373f2866142f36d2f67893f2bebae50f35ed2 /net/sched | |
parent | net: dsa: sja1105: fix ptp link error (diff) | |
download | linux-dev-40008e921133f95685ca4dfd7233b3df96af2bd6.tar.xz linux-dev-40008e921133f95685ca4dfd7233b3df96af2bd6.zip |
net: ipv4: remove erroneous advancement of list pointer
Causes crash when lifetime expires on an adress as garbage is
dereferenced soon after.
This used to look like this:
for (ifap = &ifa->ifa_dev->ifa_list;
*ifap != NULL; ifap = &(*ifap)->ifa_next) {
if (*ifap == ifa) ...
but this was changed to:
struct in_ifaddr *tmp;
ifap = &ifa->ifa_dev->ifa_list;
tmp = rtnl_dereference(*ifap);
while (tmp) {
tmp = rtnl_dereference(tmp->ifa_next); // Bogus
if (rtnl_dereference(*ifap) == ifa) {
...
ifap = &tmp->ifa_next; // Can be NULL
tmp = rtnl_dereference(*ifap); // Dereference
}
}
Remove the bogus assigment/list entry skip.
Fixes: 2638eb8b50cf ("net: ipv4: provide __rcu annotation for ifa_list")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
0 files changed, 0 insertions, 0 deletions