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| author | Willem de Bruijn | 2015-06-17 21:59:34 +0200 |
|---|---|---|
| committer | David S. Miller | 2015-06-21 19:24:37 +0200 |
| commit | 468479e6043c84f5a65299cc07cb08a22a28c2b1 (patch) | |
| tree | 09c287dc76541605f72e2f56cb61317906b56b6a /drivers/clk/clk-fixed-rate.c | |
| parent | mac80211: fix locking in update_vlan_tailroom_need_count() (diff) | |
| download | kernel-qcow2-linux-468479e6043c84f5a65299cc07cb08a22a28c2b1.tar.gz kernel-qcow2-linux-468479e6043c84f5a65299cc07cb08a22a28c2b1.tar.xz kernel-qcow2-linux-468479e6043c84f5a65299cc07cb08a22a28c2b1.zip | |
packet: avoid out of bounds read in round robin fanout
PACKET_FANOUT_LB computes f->rr_cur such that it is modulo
f->num_members. It returns the old value unconditionally, but
f->num_members may have changed since the last store. Ensure
that the return value is always < num.
When modifying the logic, simplify it further by replacing the loop
with an unconditional atomic increment.
Fixes: dc99f600698d ("packet: Add fanout support.")
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/clk/clk-fixed-rate.c')
0 files changed, 0 insertions, 0 deletions