Re: kern/55671: USB drives fail to attach after appreciable uptime on -current

[Paul Goyette <paul%whooppee.com@localhost>]

The following reply was made to PR kern/55671; it has been noted by GNATS.

From: Paul Goyette <paul%whooppee.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: david%gutteridge.ca@localhost
Subject: Re: kern/55671: USB drives fail to attach after appreciable uptime
 on -current
Date: Sat, 19 Sep 2020 13:16:37 -0700 (PDT)

 > [ 251998.035287] umass0 at uhub5 port 2 configuration 1 interface 0
 > [ 251998.035287] umass0: Verbatim (0x08ec) Store 'n' Go (0x0008), rev 2.00/1.00, addr 4
 > [ 251998.035287] umass0: using SCSI over Bulk-Only
 > [ 251998.055287] umass0: autoconfiguration error: failed to create xfers
 
 IIRC, the "failed to create xfers" means that kernel virtual address
 space has become too fragmented to allocate the required structures.
 
 See my earlier PR kern/54997
 
 
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