diff options
| author | Jon Maloy <jon.maloy@ericsson.com> | 2018-01-17 16:42:46 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-01-19 15:12:21 -0500 |
| commit | 60c2530696320ee6ffe4491c17079fa403790c98 (patch) | |
| tree | 619bdaecd86e48c1962a6866e40ada7e09c5addc /net/ipv4/tcp_input.c | |
| parent | 30c3e9d470358a6741e00e1034a1ea85c6a516f0 (diff) | |
tipc: fix race between poll() and setsockopt()
Letting tipc_poll() dereference a socket's pointer to struct tipc_group
entails a race risk, as the group item may be deleted in a concurrent
tipc_sk_join() or tipc_sk_leave() thread.
We now move the 'open' flag in struct tipc_group to struct tipc_sock,
and let the former retain only a pointer to the moved field. This will
eliminate the race risk.
Reported-by: syzbot+799dafde0286795858ac@syzkaller.appspotmail.com
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
0 files changed, 0 insertions, 0 deletions