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authorPeter Huang (Peng) <peter.huangpeng@huawei.com>2012-04-19 20:12:51 +0000
committerBen Hutchings <ben@decadent.org.uk>2012-06-10 14:42:03 +0100
commitf653363b91b7a2a9bf739b834c6830cd409c74b0 (patch)
tree30b061d30f5e092b094dfabf747c04f075cd6f75 /include/net/dst.h
parent4a590034d6d5d5863d3f9a1915452026ee031a93 (diff)
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set fake_rtable's dst to NULL to avoid kernel Oops
[ Upstream commit a881e963c7fe1f226e991ee9bbe8907acda93294 ] bridge: set fake_rtable's dst to NULL to avoid kernel Oops when bridge is deleted before tap/vif device's delete, kernel may encounter an oops because of NULL reference to fake_rtable's dst. Set fake_rtable's dst to NULL before sending packets out can solve this problem. v4 reformat, change br_drop_fake_rtable(skb) to {} v3 enrich commit header v2 introducing new flag DST_FAKE_RTABLE to dst_entry struct. [ Use "do { } while (0)" for nop br_drop_fake_rtable() implementation -DaveM ] Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Peter Huang <peter.huangpeng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include/net/dst.h')
-rw-r--r--include/net/dst.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index 75766b4..65bca65 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -54,6 +54,7 @@ struct dst_entry {
#define DST_NOCACHE 0x0010
#define DST_NOCOUNT 0x0020
#define DST_NOPEER 0x0040
+#define DST_FAKE_RTABLE 0x0080
short error;
short obsolete;