Re: kern/52147: deadlock when booting from USB disk

[christos%zoulas.com@localhost (Christos Zoulas)]

On Apr 12,  8:08pm, jaromir.dolecek%gmail.com@localhost (=?UTF-8?B?SmFyb23DrXIgRG9sZcSNZWs=?=) wrote:
-- Subject: Re: kern/52147: deadlock when booting from USB disk

| Yes, the offending MODE SENSE was silenced, it doesn't try to print
| anything out. But it could easily be reintroduced if we add there
| something else, which would cause the same problem again. Having
| something inherently deadlocking is quite dangerous.
| 
| Given that scsiverbose is only cosmetic and completely optional (code
| prints some relevant info out even without it), I think it makes sense
| to leave it up to explicit user action to have it loaded.

I think it is better to just fix it not to deadlock, this is why I was
asking for a stack trace... This has never been a problem so far; it
got introduced by adding the mode-sense code. Yes, I agree it could
be re-introduced again, but manually loading modules goes against the
principle of having module loading/unloading be seamless and not noticed
by the user.

christos