Re: [PATCH 5.15 00/57] 5.15.155-rc1 review

[Chuck Lever III]

> On Apr 12, 2024, at 6:25 AM, Harshit Mogalapalli <harshit.m.mogalapalli@xxxxxxxxxx> wrote:
> 
> Hi Greg,
> 
> 
> On 11/04/24 15:27, Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 5.15.155 release.
>> There are 57 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>> Responses should be made by Sat, 13 Apr 2024 09:53:55 +0000.
>> Anything received after that time might be too late.
> 
> I have noticed a regression in lts test case with nfsv4 and this was overlooked in the previous cycle(5.15.154). So the regression is from 153-->154 update. And I think that is due to nfs backports we had in 5.15.154.
> 
> # ./runltp -d /tmpdir -s fcntl17
> 
> <<<test_start>>>
> tag=fcntl17 stime=1712915065
> cmdline="fcntl17"
> contacts=""
> analysis=exit
> <<<test_output>>>
> fcntl17     0  TINFO  :  Enter preparation phase
> fcntl17     0  TINFO  :  Exit preparation phase
> fcntl17     0  TINFO  :  Enter block 1
> fcntl17     0  TINFO  :  child 1 starting
> fcntl17     0  TINFO  :  child 1 pid 22904 locked
> fcntl17     0  TINFO  :  child 2 starting
> fcntl17     0  TINFO  :  child 2 pid 22905 locked
> fcntl17     0  TINFO  :  child 3 starting
> fcntl17     0  TINFO  :  child 3 pid 22906 locked
> fcntl17     0  TINFO  :  child 2 resuming
> fcntl17     0  TINFO  :  child 3 resuming
> fcntl17     0  TINFO  :  child 1 resuming
> fcntl17     0  TINFO  :  child 3 lockw err 35
> fcntl17     0  TINFO  :  child 3 exiting
> fcntl17     0  TINFO  :  child 1 unlocked
> fcntl17     0  TINFO  :  child 1 exiting
> fcntl17     1  TFAIL  :  fcntl17.c:429: Alarm expired, deadlock not detected
> fcntl17     0  TWARN  :  fcntl17.c:430: You may need to kill child processes by hand
> fcntl17     2  TPASS  :  Block 1 PASSED
> fcntl17     0  TINFO  :  Exit block 1
> fcntl17     0  TWARN  :  tst_tmpdir.c:342: tst_rmdir: rmobj(/tmpdir/ltp-jRFBtBQhhx/LTP_fcnp7lqPn) failed: unlink(/tmpdir/ltp-jRFBtBQhhx/LTP_fcnp7lqPn) failed; errno=2: ENOENT
> <<<execution_status>>>
> initiation_status="ok"
> duration=10 termination_type=exited termination_id=5 corefile=no
> cutime=0 cstime=0
> <<<test_end>>>
> <<<test_start>>>
> tag=fcntl17_64 stime=1712915075
> cmdline="fcntl17_64"
> contacts=""
> analysis=exit
> <<<test_output>>>
> incrementing stop
> fcntl17     0  TINFO  :  Enter preparation phase
> fcntl17     0  TINFO  :  Exit preparation phase
> fcntl17     0  TINFO  :  Enter block 1
> fcntl17     0  TINFO  :  child 1 starting
> fcntl17     0  TINFO  :  child 1 pid 22909 locked
> fcntl17     0  TINFO  :  child 2 starting
> fcntl17     0  TINFO  :  child 2 pid 22910 locked
> fcntl17     0  TINFO  :  child 3 starting
> fcntl17     0  TINFO  :  child 3 pid 22911 locked
> fcntl17     0  TINFO  :  child 2 resuming
> fcntl17     0  TINFO  :  child 3 resuming
> fcntl17     0  TINFO  :  child 1 resuming
> fcntl17     0  TINFO  :  child 3 lockw err 35
> fcntl17     0  TINFO  :  child 3 exiting
> fcntl17     0  TINFO  :  child 1 unlocked
> fcntl17     0  TINFO  :  child 1 exiting
> fcntl17     1  TFAIL  :  fcntl17.c:429: Alarm expired, deadlock not detected
> fcntl17     0  TWARN  :  fcntl17.c:430: You may need to kill child processes by hand
> fcntl17     2  TPASS  :  Block 1 PASSED
> fcntl17     0  TINFO  :  Exit block 1
> fcntl17     0  TWARN  :  tst_tmpdir.c:342: tst_rmdir: rmobj(/tmpdir/ltp-jRFBtBQhhx/LTP_fcn9Xy4hM) failed: unlink(/tmpdir/ltp-jRFBtBQhhx/LTP_fcn9Xy4hM) failed; errno=2: ENOENT
> <<<execution_status>>>
> initiation_status="ok"
> duration=10 termination_type=exited termination_id=5 corefile=no
> cutime=0 cstime=0
> <<<test_end>>>
> INFO: ltp-pan reported some tests FAIL
> LTP Version: 20240129-167-gb592cdd0d
> 
> 
> Steps used after installing latest ltp:
> 
> $ mkdir /tmpdir
> $ yum install nfs-utils  -y
> $ echo "/media *(rw,no_root_squash,sync)" >/etc/exports
> $ systemctl start nfs-server.service
> $ mount -o rw,nfsvers=3 127.0.0.1:/media /tmpdir
> $ cd /opt/ltp
> $ ./runltp -d /tmpdir -s fcntl17
> 
> 
> 
> This does not happen in 5.15.153 tag.
> 
> Adding nfs people to the CC list

The reproducer uses NFSv3, but the bug report says NFSv4
at the top.

I was able to reproduce this on my nfsd-5.15.y branch
with NFSv3.

A bisect would be most helpful.


> Thanks,
> Harshit
> 
> 
> 
> 
> 
>> The whole patch series can be found in one patch at:
>> https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.155-rc1.gz
>> or in the git tree and branch at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
>> and the diffstat can be found below.
>> thanks,
>> greg k-h

--
Chuck Lever