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| author | Eric Dumazet <edumazet@google.com> | 2019-05-28 02:56:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-29 03:22:15 +0300 |
| commit | ae7352d384a552d8c799c242e74a934809990a71 (patch) | |
| tree | 9e0f7e4476b524263e403ff8be2acb6a9746cddb /net/ieee802154 | |
| parent | 6b73d19711d0989cbdcd19c61faa0f79a1a5e466 (diff) | |
| download | linux-ae7352d384a552d8c799c242e74a934809990a71.tar.xz | |
inet: frags: call inet_frags_fini() after unregister_pernet_subsys()
Both IPv6 and 6lowpan are calling inet_frags_fini() too soon.
inet_frags_fini() is dismantling a kmem_cache, that might be needed
later when unregister_pernet_subsys() eventually has to remove
frags queues from hash tables and free them.
This fixes potential use-after-free, and is a prereq for the following patch.
Fixes: d4ad4d22e7ac ("inet: frags: use kmem_cache for inet_frag_queue")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154')
| -rw-r--r-- | net/ieee802154/6lowpan/reassembly.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ieee802154/6lowpan/reassembly.c b/net/ieee802154/6lowpan/reassembly.c index e59c3b708969..5b56f16ed86b 100644 --- a/net/ieee802154/6lowpan/reassembly.c +++ b/net/ieee802154/6lowpan/reassembly.c @@ -540,7 +540,7 @@ err_sysctl: void lowpan_net_frag_exit(void) { - inet_frags_fini(&lowpan_frags); lowpan_frags_sysctl_unregister(); unregister_pernet_subsys(&lowpan_frags_ops); + inet_frags_fini(&lowpan_frags); } |