testimage: Exclude wtmp from target-dumper commands

wtmp is filled with binary data which the run_serial command can't cope with.
Catting this results in confusion of the serial interface and potentially large
backlogs of data in the buffers which can hang qemu.

Exclude the problematic files from the command.

(From OE-Core rev: 2afd9a6002cba2a23dd62a1805b4be04083c041b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 599ac08a6f6fb3f6a89a897c8e06367c63c2f979)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/testimage.bbclass b/meta/classes/testimage.bbclass
index 34173ce68d..6864eeed2f 100644
--- a/meta/classes/testimage.bbclass
+++ b/meta/classes/testimage.bbclass
@@ -112,7 +112,7 @@ testimage_dump_target () {
     netstat -an
     ip address
     # Next command will dump logs from /var/log/
-    find /var/log/ -type f 2>/dev/null -exec echo "====================" \; -exec echo {} \; -exec echo "====================" \; -exec cat {} \; -exec echo "" \;
+    find /var/log/ -type f -name !wtmp* 2>/dev/null -exec echo "====================" \; -exec echo {} \; -exec echo "====================" \; -exec cat {} \; -exec echo "" \;
 }
 
 testimage_dump_host () {