diff options
| author | Eric Dumazet <edumazet@google.com> | 2013-01-22 06:33:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-22 14:14:47 -0500 |
| commit | a05948f296ce103989b28a2606e47d2e287c3c89 (patch) | |
| tree | 075e9ca6c41cf06103fd44326b6db419011713a4 /net/core/scm.c | |
| parent | d721a1752ba544df8d7d36959038b26bc92bdf80 (diff) | |
netxen: fix off by one bug in netxen_release_tx_buffer()
Christoph Paasch found netxen could trigger a BUG in its dismantle
phase, in netxen_release_tx_buffer(), using full size TSO packets.
cmd_buf->frag_count includes the skb->data part, so the loop must
start at index 1 instead of 0, or else we can make an out
of bound access to cmd_buff->frag_array[MAX_SKB_FRAGS + 2]
Christoph provided the fixes in netxen_map_tx_skb() function.
In case of a dma mapping error, its better to clear the dma fields
so that we don't try to unmap them again in netxen_release_tx_buffer()
Reported-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Cc: Sony Chacko <sony.chacko@qlogic.com>
Cc: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/scm.c')
0 files changed, 0 insertions, 0 deletions