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| author | Alexander Drozdov <al.drozdov@gmail.com> | 2015-07-28 10:57:01 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-29 07:09:58 (GMT) |
| commit | dbd46ab412b8fb395f2b0ff6f6a7eec9df311550 (patch) | |
| tree | 119701e15a3be300e89a3cfd2860e51f16ea86ad /Documentation/lockup-watchdogs.txt | |
| parent | 11c91ef98f37cd743098de26160fffd7f9bd40e1 (diff) | |
| download | linux-dbd46ab412b8fb395f2b0ff6f6a7eec9df311550.tar.xz | |
packet: tpacket_snd(): fix signed/unsigned comparison
tpacket_fill_skb() can return a negative value (-errno) which
is stored in tp_len variable. In that case the following
condition will be (but shouldn't be) true:
tp_len > dev->mtu + dev->hard_header_len
as dev->mtu and dev->hard_header_len are both unsigned.
That may lead to just returning an incorrect EMSGSIZE errno
to the user.
Fixes: 52f1454f629fa ("packet: allow to transmit +4 byte in TX_RING slot for VLAN case")
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/lockup-watchdogs.txt')
0 files changed, 0 insertions, 0 deletions