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From: Bart Van Assche <bvanassche@acm.org>
To: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Cc: Damien Le Moal <dlemoal@kernel.org>,
	linux-block@vger.kernel.org, Bart Van Assche <bvanassche@acm.org>
Subject: [PATCH blktests] check: Suppress kmemleak scanning failures
Date: Mon, 23 Mar 2026 13:05:12 -0700	[thread overview]
Message-ID: <20260323200512.1237426-1-bvanassche@acm.org> (raw)

kmemleak disables itself if an internal error has been encountered. If
this happens, any attempt to write into /sys/kernel/debug/kmemleak
triggers the error "Operation not permitted". Suppress this error
message instead of displaying it on stdout.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 check | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/check b/check
index f170458fdb69..d2232828a9e3 100755
--- a/check
+++ b/check
@@ -233,7 +233,7 @@ _check_kmemleak() {
 
 	((KMEMLEAK)) || return 0
 
-	echo scan > "$KMEMLEAK_FILE"
+	{ echo scan > "$KMEMLEAK_FILE"; } 2>/dev/null || return 0
 	sleep 1
 	kmemleak=$(cat "$KMEMLEAK_FILE")
 

             reply	other threads:[~2026-03-23 20:05 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-23 20:05 Bart Van Assche [this message]
2026-03-31  0:36 ` [PATCH blktests] check: Suppress kmemleak scanning failures Shinichiro Kawasaki

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