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author | 2017-08-10 10:30:29 -0700 | |
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committer | 2017-08-10 10:30:29 -0700 | |
commit | 26273939ace935dd7553b31d279eab30b40f7b9a (patch) | |
tree | 0730a25482747182b19983ffc450e40c3108f331 /net/packet | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc (diff) | |
parent | packet: fix tp_reserve race in packet_set_ring (diff) | |
download | linux-26273939ace935dd7553b31d279eab30b40f7b9a.tar.gz linux-26273939ace935dd7553b31d279eab30b40f7b9a.tar.bz2 linux-26273939ace935dd7553b31d279eab30b40f7b9a.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix handling of initial STATE message in TIPC, from Jon Paul Maloy.
2) Fix stats handling in bcm_sysport_get_stats(), from Florian
Fainelli.
3) Reject 16777215 VNI value in geneve_validate(), from Girish
Moodalbail.
4) Fix initial IGMP sysctl setting regression, from Nikolay Borisov.
5) Once a UFO fragmented frame is treated as UFO, we should continue
doing so. Likewise once a frame has been segmented, we should
continue doing that and not try to convert it to a UFO frame. From
Willem de Bruijn.
6) Test the AF_PACKET RX/TX ring pg_vec state under the socket lock to
prevent races. From Willem de Bruijn.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
packet: fix tp_reserve race in packet_set_ring
udp: consistently apply ufo or fragmentation
net: sched: set xt_tgchk_param par.nft_compat as 0 in ipt_init_target
igmp: Fix regression caused by igmp sysctl namespace code.
geneve: maximum value of VNI cannot be used
net: systemport: Fix software statistics for SYSTEMPORT Lite
tipc: remove premature ESTABLISH FSM event at link synchronization
Diffstat (limited to 'net/packet')
-rw-r--r-- | net/packet/af_packet.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 0615c2a950fa..008a45ca3112 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -3700,14 +3700,19 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv if (optlen != sizeof(val)) return -EINVAL; - if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) - return -EBUSY; if (copy_from_user(&val, optval, sizeof(val))) return -EFAULT; if (val > INT_MAX) return -EINVAL; - po->tp_reserve = val; - return 0; + lock_sock(sk); + if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) { + ret = -EBUSY; + } else { + po->tp_reserve = val; + ret = 0; + } + release_sock(sk); + return ret; } case PACKET_LOSS: { |