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Tue, 16 Apr 2024 10:09:27 +0800 (CST) From: Yu Kuai To: linux-block@vger.kernel.org, saranyamohan@google.com, axboe@kernel.dk, tj@kernel.org Cc: yukuai3@huawei.com, yukuai1@huaweicloud.com, yangerkun@huawei.com Subject: [PATCH blktests 4/5] tests/throtl: add a new test 004 Date: Tue, 16 Apr 2024 10:00:41 +0800 Message-Id: <20240416020042.509291-5-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240416020042.509291-1-yukuai1@huaweicloud.com> References: <20240416020042.509291-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgAX5g7U3R1mMNVnKA--.11112S8 X-Coremail-Antispam: 1UD129KBjvJXoW7ur43Zw4xKw1xtFW5ArWfuFg_yoW5JF1xpr WUGa1Fyr4xCFnIqr13KanrZayrZws5Zr4Sy3srJr1SyFyjq34UJr1Ikr1SvFZ5CF9xWryr ZF48XrWfK3W8GrDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9C14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCF04k20xvY0x0EwIxGrw CFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE 14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2 IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxK x2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI 0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUQSdkUUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai Test delete the disk while IO is throttled, regerssion test for: commit 884f0e84f1e3 ("blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()") commit 8f9e7b65f833 ("block: cancel all throttled bios in del_gendisk()") Signed-off-by: Yu Kuai --- tests/throtl/004 | 79 ++++++++++++++++++++++++++++++++++++++++++++ tests/throtl/004.out | 4 +++ 2 files changed, 83 insertions(+) create mode 100755 tests/throtl/004 create mode 100644 tests/throtl/004.out diff --git a/tests/throtl/004 b/tests/throtl/004 new file mode 100755 index 0000000..d07f9d5 --- /dev/null +++ b/tests/throtl/004 @@ -0,0 +1,79 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-3.0+ +# Copyright (C) 2024 Yu Kuai +# +# Test delete the disk while IO is throttled, regerssion test for +# commit 884f0e84f1e3 ("blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()") +# commit 8f9e7b65f833 ("block: cancel all throttled bios in del_gendisk()") + +. tests/throtl/rc + +DESCRIPTION="delete disk while IO is throttled" +QUICK=1 + +CG=/sys/fs/cgroup +TEST_DIR=$CG/blktests_throtl +devname=nullb0 +dev="" + +set_up_test() { + if ! _init_null_blk nr_devices=0; then + return 1; + fi + + if ! _configure_null_blk $devname power=1; then + return 1; + fi + + dev=$(cat /sys/block/$devname/dev) + echo +io > $CG/cgroup.subtree_control + mkdir $TEST_DIR + + return 0; +} + +clean_up_test() { + rmdir $TEST_DIR + echo -io > $CG/cgroup.subtree_control + _exit_null_blk +} + +config_throtl() { + limit=$((1024 * 1024)) + echo "$dev wbps=$limit" > $TEST_DIR/io.max +} + +test_io() { + config_throtl + + { + sleep 0.1 + start_time=$(date +%s.%N) + + dd of=/dev/$devname if=/dev/zero bs=10M count=1 oflag=direct status=none + + end_time=$(date +%s.%N) + elapsed=$(echo "$end_time - $start_time" | bc) + printf "%.0f\n" "$elapsed" + } & + + pid=$! + echo $! > $TEST_DIR/cgroup.procs + + sleep 1 + echo 0 > /sys/kernel/config/nullb/$devname/power + wait $pid +} + +test() { + echo "Running ${TEST_NAME}" + + if ! set_up_test; then + return 1; + fi + + test_io + + clean_up_test + echo "Test complete" +} diff --git a/tests/throtl/004.out b/tests/throtl/004.out new file mode 100644 index 0000000..03331fe --- /dev/null +++ b/tests/throtl/004.out @@ -0,0 +1,4 @@ +Running throtl/004 +dd: error writing '/dev/nullb0': Input/output error +1 +Test complete