git: 3c1e899130a0 - stable/15 - tools/test/stress2/misc/all.debug.inc: skip undefined variables

The branch stable/15 has been updated by se:

URL: https://cgit.FreeBSD.org/src/commit/?id=3c1e899130a0a141c9d166bff2d93bb07f621157

commit 3c1e899130a0a141c9d166bff2d93bb07f621157
Author:     Stefan Eßer <se@FreeBSD.org>
AuthorDate: 2026-06-11 11:15:12 +0000
Commit:     Stefan Eßer <se@FreeBSD.org>
CommitDate: 2026-06-16 10:57:44 +0000

    tools/test/stress2/misc/all.debug.inc: skip undefined variables
    
    On my ZFS based systems, no allocations occur with tags "newblk" or
    "freework". This leads to errors executing the tests that check for
    memory leaks. Skip the checks if the output of wmstat -m does not
    contain lines corresponding to those allocations.
    
    MFC after:      3 days
    
    (cherry picked from commit 6e5b990c509777544b790cc8e490965166d04684)
---
 tools/test/stress2/misc/all.debug.inc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/test/stress2/misc/all.debug.inc b/tools/test/stress2/misc/all.debug.inc
index 4042ca1f7718..419945154791 100644
--- a/tools/test/stress2/misc/all.debug.inc
+++ b/tools/test/stress2/misc/all.debug.inc
@@ -49,13 +49,15 @@ post_debug() {
 		debug_statfs=$debug_new; }
 
 	debug_new=`vmstat -m | grep -w freework | awk '{print $2}'`
-	[ $((debug_new - debug_freework)) -gt 0 -a $debug_new -gt 100 ] &&
+	[ -n "$debug_new" ] &&
+        [ $((debug_new - debug_freework)) -gt 0 -a $debug_new -gt 100 ] &&
 	    { printf "stress2: freework leak: %d/%d.\r\n" \
 	        $((debug_new - debug_freework)) $debug_new > $console
 		debug_freework=$debug_new; }
 
 	debug_new=`vmstat -m | grep -w newblk | awk '{print $2}'`
-	[ $((debug_new - debug_newblk)) -gt 0 -a $debug_new -gt 100 ] &&
+	[ -n "$debug_new" ] &&
+        [ $((debug_new - debug_newblk)) -gt 0 -a $debug_new -gt 100 ] &&
 	    { printf "stress2: newblk leak: %d/%d.\r\n" \
 	        $((debug_new - debug_newblk)) $debug_new > $console
 		debug_newblk=$debug_new; }