From mboxrd@z Thu Jan 1 00:00:00 1970 From: Petr Vorel Date: Wed, 31 Jul 2019 08:33:20 +0200 Subject: [LTP] [PATCH] zram01: Fix division by 0 Message-ID: <20190731063320.4898-1-pvorel@suse.cz> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ltp@lists.linux.it Sometimes free reports no memory use by zram, which leads to division by 0: zram01 8 TINFO: zram used 0M, zram disk sizes 104857600M /opt/ltp/testcases/bin/zram01.sh: line 87: 100 * 104857600 / 0: division by 0 (error token is "0") TBROK the test in that case. Signed-off-by: Petr Vorel --- testcases/kernel/device-drivers/zram/zram01.sh | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/testcases/kernel/device-drivers/zram/zram01.sh b/testcases/kernel/device-drivers/zram/zram01.sh index 7d3951aa5..79e18cbb7 100755 --- a/testcases/kernel/device-drivers/zram/zram01.sh +++ b/testcases/kernel/device-drivers/zram/zram01.sh @@ -82,6 +82,11 @@ zram_fill_fs() total_size=$(($total_size + $s)) done + if [ $used_mem -eq 0 ]; then + tst_resm TBROK "no memory used by zram" + return + fi + tst_resm TINFO "zram used ${used_mem}M, zram disk sizes ${total_size}M" local v=$((100 * $total_size / $used_mem)) -- 2.22.0