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| author |   Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr> | 2015-02-03 19:05:18 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-02-04 20:26:12 -0800 |
| commit | b057df24a7536cce6c372efe9d0e3d1558afedf4 (patch) | |
| tree | 4c062e5a5eb0c470ff686b741d85814ba66a593a /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | pkt_sched: fq: avoid hang when quantum 0 (diff) | |
| download | wireguard-linux-b057df24a7536cce6c372efe9d0e3d1558afedf4.tar.xz wireguard-linux-b057df24a7536cce6c372efe9d0e3d1558afedf4.zip | |
cls_api.c: Fix dumping of non-existing actions' stats.
In tcf_exts_dump_stats(), ensure that exts->actions is not empty before
accessing the first element of that list and calling tcf_action_copy_stats()
on it. This fixes some random segvs when adding filters of type "basic" with
no particular action.
This also fixes the dumping of those "no-action" filters, which more often
than not made calls to tcf_action_copy_stats() fail and consequently netlink
attributes added by the caller to be removed by a call to nla_nest_cancel().
Fixes: 33be62715991 ("net_sched: act: use standard struct list_head")
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions