[Bug 217914] scsi_eh_1 process high cpu after upgrading to 6.5

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--- Comment #5 from dlemoal@xxxxxxxxxx ---
On 9/16/23 07:01, Niklas Cassel wrote:
> On Fri, Sep 15, 2023 at 01:42:18PM -0700, Bart Van Assche wrote:
>> On 9/15/23 12:33, bugzilla-daemon@xxxxxxxxxx wrote:
>>> The users loqs and leonshaw helped to narrow it down to this commit:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=624885209f31eb9985bf51abe204ecbffe2fdeea
>> Damien, can you please take a look?
> Hello Bart,
> It seems like:
> https://lore.kernel.org/linux-scsi/20230915022034.678121-1-dlemoal@xxxxxxxxxx/
> Solves the problem.
> From a quick look at the logs with extra log leves enabled:
> https://pastebin.com/f2LQ8kQD
> command with a non-zero service action issued by scsi_cdl_check() fails,
> and will be added to SCSI EH over and over.

The failure is due to the drive not liking this command. My patch avoids
that command, thus solves the issue with drives that choke on it. However, the
constant retry sound to me like a different bug... We should not retry that
command at all I think. Or maybe limit it to 3 retries.

> Kind regards,
> Niklas

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