Bug 1222 - [Anck 4.19][ck26_rc3][xfs文件系统]xfstests ext4-overlay overlay/074 name_to_handle: Value too large for defined data type
Summary: [Anck 4.19][ck26_rc3][xfs文件系统]xfstests ext4-overlay overlay/074 name_to_handl...
Status: RESOLVED FIXED
Alias: None
Product: ANCK 4.19 Dev
Classification: ANCK
Component: fs (show other bugs) fs
Version: 4.19-026.x
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: hongnan_Li
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-13 17:04 UTC by kangjiangbo
Modified: 2022-05-17 10:33 UTC (History)
3 users (show)

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Description kangjiangbo 2022-05-13 17:04:10 UTC 
Description of problem:
xfs文件系统，xfstests ext4-overlay overlay/074 name_to_handle: Value too large for defined data type
x86和arm均存在该问题,非regression，RC1版本亦存在此问题
an8成功

失败几率：必现

Version-Release number of selected component (if applicable):
# uname -r
4.19.91-26_rc3.an7.aarch64
# uname -r
4.19.91-26_rc3.an7.x86_64

# cat /etc/os-release
NAME="Anolis OS"
VERSION="7.7"
ID="anolis"
ID_LIKE="rhel fedora centos"
VERSION_ID="7.7"
PRETTY_NAME="Anolis OS 7.7"
ANSI_COLOR="0;31"
HOME_URL="https://openanolis.cn/"
BUG_REPORT_URL="https://bugs.openanolis.cn/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"



How reproducible:
1. 准备环境
#准备disk1 disk2测试盘，视本地环境修改
disk1=vdb1
disk2=vdb2

dmsetup remove_all
wipefs -a --force /dev/$disk1
wipefs -a --force /dev/$disk2

mkfs -t ext4 -q -F /dev/$disk1
mkfs -t ext4 -q -F /dev/$disk2

export TEST_DIR=/fs/$disk1
export TEST_DEV=/dev/$disk1
export FSTYP=ext4
export SCRATCH_MNT=/fs/scratch
mkdir /fs/$disk1 -p
mkdir /fs/scratch -p
export SCRATCH_DEV=/dev/$disk2

2. 下载xfstests测试代码

3. 编译测试源码
cd xfstests-dev
export CFLAGS="-fcommon"
make
make install


Actual results:
./check -overlay tests/overlay/074
FSTYP         -- overlay
PLATFORM      -- Linux/aarch64 iZ2zebfu2pfe96wy4xb5lsZ 4.19.91-26_rc3.an7.aarch64 #1 SMP Tue May 10 20:56:42 CST 2022
MKFS_OPTIONS  -- /fs/vdb2
MOUNT_OPTIONS -- /fs/vdb2 /fs/vdb2/ovl-mnt

overlay/074     - output mismatch (see /tmp/tone/run/xfstests/results//overlay/074.out.bad)
    --- tests/overlay/074.out   2022-05-11 18:45:58.325458449 +0800
    +++ /tmp/tone/run/xfstests/results//overlay/074.out.bad     2022-05-13 17:01:58.626601503 +0800
    @@ -1,2 +1,3 @@
     QA output created by 074
    +/fs/vdb2/ovl-mnt/testdir/file000000: name_to_handle: Value too large for defined data type
     Silence is golden
    ...
    (Run 'diff -u /tmp/tone/run/xfstests/tests/overlay/074.out /tmp/tone/run/xfstests/results//overlay/074.out.bad'  to see the entire diff)
Ran: overlay/074
Failures: overlay/074
Failed 1 of 1 tests

Expected results:

Additional info:
xfsprogs-4.5.0-22.an7
xfsprogs-4.19.0-5.0.1.an7
均失败
x86和arm均存在该问题,非regression，RC1版本亦存在此问题
an8成功
Comment 1 hongnan_Li alibaba_cloud_group 2022-05-16 16:16:58 UTC 
该测试用例用于测试以下两个overlayfs bugs:
1. Failure to query file handle size
    Fixed by kernel commit 144da23beab8:
        ovl: return required buffer size for file handles
2. Kernel OOPS on open by hand crafted malformed file handle
    Fixed by kernel commit 9aafc1b01873:
        ovl: potential crash in ovl_fid_to_fh()

第一个fix补丁待合入。
Comment 2 hongnan_Li alibaba_cloud_group 2022-05-17 10:33:42 UTC 
merged at:
https://gitee.com/anolis/cloud-kernel/pulls/373