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Commit 1bf40954 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
Browse files

[PACKET]: Fix /proc/net/packet crash due to bogus private pointer 



The seq_open_net patch changed the meaning of seq->private.
Unfortunately it missed two spots in AF_PACKET, which still
used the old way of dereferencing seq->private, thus causing
weird and wonderful crashes when reading /proc/net/packet.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2d4d2980

net/packet/af_packet.c

+2 −2
Original line number Diff line number Diff line
@@ -1878,7 +1878,7 @@ static void *packet_seq_start(struct seq_file *seq, loff_t *pos) 


static void *packet_seq_next(struct seq_file *seq, void *v, loff_t *pos)

{

	struct net *net = seq->private;

	struct net *net = seq_file_net(seq);

	++*pos;

	return  (v == SEQ_START_TOKEN)

		? sk_head(&net->packet.sklist)
@@ -1887,7 +1887,7 @@ static void *packet_seq_next(struct seq_file *seq, void *v, loff_t *pos) 


static void packet_seq_stop(struct seq_file *seq, void *v)

{

	struct net *net = seq->private;

	struct net *net = seq_file_net(seq);

	read_unlock(&net->packet.sklist_lock);

}