[AX25]: Make ax2asc thread-proof

Ax2asc was still using a static buffer for all invocations which isn't
exactly SMP-safe.  Change ax2asc to take an additional result buffer as
the argument.  Change all callers to provide such a buffer.

Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index ea43dfb774e2..ed705ddad56b 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1874,6 +1874,7 @@ static void ax25_info_stop(struct seq_file *seq, void *v)
 static int ax25_info_show(struct seq_file *seq, void *v)
 {
         ax25_cb *ax25 = v;
+        char buf[11];
         int k;
 
 
@@ -1885,13 +1886,13 @@ static int ax25_info_show(struct seq_file *seq, void *v)
         seq_printf(seq, "%8.8lx %s %s%s ",
                    (long) ax25,
                    ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
-                   ax2asc(&ax25->source_addr),
+                   ax2asc(buf, &ax25->source_addr),
                    ax25->iamdigi? "*":"");
-        seq_printf(seq, "%s", ax2asc(&ax25->dest_addr));
+        seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
 
         for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
                 seq_printf(seq, ",%s%s",
-                           ax2asc(&ax25->digipeat->calls[k]),
+                           ax2asc(buf, &ax25->digipeat->calls[k]),
                            ax25->digipeat->repeated[k]? "*":"");
         }