Re: nfs setgid inheritance test

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, Dec 31, 2022 at 02:25:52AM +0000, cuiyue-fnst@xxxxxxxxxxx wrote:
> Hi, Christian
> 
> Thank you for your response.
> 
> > Afaict, nothing has changed and the test should still be skipped.
> > I'm not sure I ever send a patch to skip this test specifically for nfs though. I
> > might just not have gotten around to that.
> > 
> > Can you please also send the exact steps for reproducing this issue?
> 
> The reproducing steps is as follows:
> 
> Client & Server:
> 1. Install xfstests
> 2. # yum install libcap-devel
> 
> Server:
> 1. Set exports file.
> # echo "/nfstest      *(rw,insecure,no_subtree_check,no_root_squash,fsid=1)
> /nfsscratch      *(rw,insecure,no_subtree_check,no_root_squash,fsid=2)" >/etc/exports
> 2. Restart services.
> # systemctl restart rpcbind.service 
> # systemctl restart nfs-server.service
> # systemctl restart rpc-statd.service 
> 
> Client:
> 1. Create mount point 
> # mkdir -p /mnt/test
> # mkdir -p /mnt/scratch
> 2. Cofigure NFS parameters.
> # echo "FSTYP=nfs
> TEST_DEV=server_IP:/nfstest
> TEST_DIR=/mnt/test
> SCRATCH_DEV=server_IP:/nfsscratch
> SCRATCH_MNT=/mnt/scratch
> export KEEP_DMESG=yes
> NFS_MOUNT_OPTIONS=\"-o vers=3\"">/var/lib/xfstests/local.config
> 3. Test
> # ./check -d generic/633

The tests should pass with "no_root_squash" set. The root cause of the
original issue was that files created by root are squashed to 65534
which breaks setgid inheritance rules for S_ISGID directories.

But without root squashing the tests should succeed. If I reproduce this
exactly with your instructions on a v6.2-rc1 kernel I get a success as
expected.

I don't think you've told me What kernel you are testing this on?

> 
> Thanks,
> cuiyue
> 
> ★☆★☆★☆★☆FNSTオンラインへようこそ★☆★☆★☆★☆
>    FNST最新情報盛りたくさん!
>    http://online.fnst.cn.fujitsu.com/fnst-news
> ★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆
> 
> > -----Original Message-----
> > From: Christian Brauner <brauner@xxxxxxxxxx>
> > Sent: Friday, December 30, 2022 11:48 PM
> > To: Cui, Yue <cuiyue-fnst@xxxxxxxxxxx>
> > Cc: Christian Brauner <christian@xxxxxxxxxx>; linux-nfs@xxxxxxxxxxxxxxx
> > Subject: Re: nfs setgid inheritance test
> > 
> > On Fri, Dec 30, 2022 at 11:11:56AM +0000, cuiyue-fnst@xxxxxxxxxxx wrote:
> > > Hi, Christian
> > >
> > > When I test xfstests on NFS(with no_root_squash), generic/633 fails like this:
> > >
> > > generic/633       [failed, exit status 1]- output mismatch (see
> > /var/lib/xfstests/results//generic/633.out.bad)
> > >     --- tests/generic/633.out     2022-11-23 09:13:48.919484895 -0500
> > >     +++ /var/lib/xfstests/results//generic/633.out.bad   2022-11-24
> > 05:53:40.836484895 -0500
> > >     @@ -1,2 +1,4 @@
> > >      QA output created by 633
> > >      Silence is golden
> > >     +vfstest.c: 1642: setgid_create - Success - failure: is_setgid
> > >     +vfstest.c: 1882: run_test - Operation not supported - failure: create
> > operations in directories with setgid bit set
> > >     ...
> > >     (Run 'diff -u /var/lib/xfstests/tests/generic/633.out
> > > /var/lib/xfstests/results//generic/633.out.bad'  to see the entire
> > > diff)
> > >
> > > We have reported this problem on Feburary.
> > >
> > https://lore.kernel.org/linux-nfs/OS3PR01MB770539462BE3E7959DAF8B57893
> > > 89@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#u
> > >
> > > At that time, the conclusion is NFS should skip this test.
> > > But I cannot find this patch in the latest xfstests.
> > > Does NFS still need to skip this test now?
> > 
> > Afaict, nothing has changed and the test should still be skipped.
> > I'm not sure I ever send a patch to skip this test specifically for nfs though. I
> > might just not have gotten around to that.
> > 
> > Can you please also send the exact steps for reproducing this issue?



[Index of Archives]     [Linux Filesystem Development]     [Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Yosemite Info]     [Linux SCSI]

  Powered by Linux