Bug#1043404: Acknowledgement (with linux 6.4.4 mariadbd is at 100% wait for one cpu)

[Séverine Wiltgen <severine.wiltgen@mediapart.fr>]

Hello,

I have the same problem again but this time with kernel 
linux-image-6.5.0-1-amd64      6.5.3-1

uname -a gives
Linux 6.5.0-1-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.5.3-1 (2023-09-13) 
x86_64 GNU/Linux

This time, no need to run any particular services, the server is a fresh 
install with no added packages (no mariadb running). In a top, i can see 
this, the process which uses cpu is scsi_eh_1.

%Cpu0  :  0.0 us,  2.7 sy,  0.0 ni,  0.0 id, 97.3 wa,  0.0 hi,  0.0 si, 
0.0 st
%Cpu1  :  0.3 us,  0.3 sy,  0.0 ni, 68.1 id, 30.9 wa,  0.0 hi,  0.3 si, 
0.0 st
MiB Mem :   3913.1 total,   3643.2 free,    323.7 used,    127.2 buff/cache
MiB Swap:    976.0 total,    976.0 free,      0.0 used.   3589.3 avail Mem

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ 
COMMAND
    170 root      20   0       0      0      0 D  67.4   0.0   3:18.88 
scsi_eh_1

This appears just after a reboot, there are no running commands  writing 
to disk.

When I reboot on the previous kernel (linux-image-6.4.0-4-amd64 
6.4.13-1), I don't have the same issue.
I have this problem on several servers, but I am not sure this is the 
same issue than my firt report. A google search with scsi_eh_1 high cpu 
use shows this bug for example
https://lore.kernel.org/all/7611d95d0aada3814a5b140661b3b5188b8b86bb.camel@redhat.com/T/

Thanks,
--
Séverine Wiltgen
0658739663
Administratrice Système
Pôle exploitation
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