Hi there,


we got the same issue (CentOS Stream 9), the CPUX is stucks, we can see massive CPU usage on a single kworker+cifsiod
And we find that the culpid (after testing multiple CIFS version, even SMB) was the upgrade of the cifs-utils, from 6.14-1.el9 to 7.0-1.el9 which happened before the week end (we didn't saw it then, no load)
Here some details, maybe to help :


We are mounting a Windows 2012 server, using CIFS 3.0 : 
//server/directory /mnt/directory cifs nobrl,rw,noperm,user=XXXXX,pass=XXXXX,mfsymlinks,uid=2000,gid=2000,dir_mode=0755,file_mode=0755,vers=3.0 0 0


Here, the latest kernel as per the 22th of March 2023 installed :
Linux WWWWW 5.14.0-285.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Mar 7 17:32:48 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux


Here, the situation DNF wise (after we locked to the previous cifs-utils)

Installed Packages
cifs-utils.x86_64                                                                                                      6.14-1.el9                                                                                                      @baseos
Available Packages
cifs-utils.x86_64                                                                                                      6.11-5.el9                                                                                                      baseos 
cifs-utils.x86_64                                                                                                      6.14-1.el9                                                                                                      baseos 
cifs-utils.x86_64                                                                                                      7.0-1.el9                                                                                                       baseos

Hello,

There is a similar bug bz2177562 and it is fixed from kernel-5.14.0-301.el9. Could you try to test on kernel-5.14.0-301.el9 or later version?

Thanks.

@xiaoli feng => To be clear, you means update :
   _ udapte the CIFS utils pacakges
   _ update the kernel to at least 5.14.0-301.el9

isn't it ?


Right now this is what I run perfectly stable :


[tecnotree@teamcity-repository9 ~]$ sudo dnf --showduplicates list cifs-utils
Last metadata expiration check: 2:10:27 ago on Mon 15 May 2023 08:12:29 AM EEST.
Installed Packages
cifs-utils.x86_64                                                                            6.14-1.el9                                                                             @baseos
Available Packages
cifs-utils.x86_64                                                                            6.11-5.el9                                                                             baseos 
cifs-utils.x86_64                                                                            6.14-1.el9                                                                             baseos 
cifs-utils.x86_64                                                                            7.0-1.el9                                                                              baseos 
[tecnotree@teamcity-repository9 ~]$ uname -a
Linux teamcity-repository9.tecnotree.com 5.14.0-307.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Wed May 3 06:16:28 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux


And it's perfectly stable since we rollbacked the cifs-utils and any kernels

I cannot access the bug 2177562 so I'm not even sure this is related.
But I'll try to update this week end, and see if the server can sustain the week end (it uses to break after few hours)

I am running into this issue too after upgrading to 5.14.0-284.11.1.el9_2.  Will a fix for it be released soon?

Same here, most of the time when waking up from suspend.

Sorry for the late response but after the latest update of CentOS it worked again for me. That's why i didn't response earlier. I left everything the same and didn't change anything and it startet working again. The update was somewhere around early Mai.

If that was a kernel update for CentOS 9 stream then I suspect it hasn't been released yet for RHEL (and therefore Alma and Rocky Linux).

Is there any timeline of when the fix will be released for RHEL 9?

This should be fixed in kernel-5.14.0-284.17.1.el9_2

Thanks, do you know when kernel-5.14.0-284.17.1.el9_2 will be released?

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