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

[Michael van Elst <mlelstv%serpens.de@localhost>]

The following reply was made to PR kern/52147; it has been noted by GNATS.

From: Michael van Elst <mlelstv%serpens.de@localhost>
To: Christos Zoulas <christos%zoulas.com@localhost>
Cc: =?iso-8859-1?Q?Jarom=EDr?= Dole?ek <jaromir.dolecek%gmail.com@localhost>,
        gnats-bugs%netbsd.org@localhost, Jaromir Dolecek <jdolecek%netbsd.org@localhost>,
        gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/52147: deadlock when booting from USB disk
Date: Thu, 13 Apr 2017 01:15:55 +0200

 On Wed, Apr 12, 2017 at 02:25:13PM -0400, Christos Zoulas wrote:
 
 > I think it is better to just fix it not to deadlock, this is why I was
 > asking for a stack trace...
 
 Typed manually from the screenshots....
 
 mi_switch
 sleepq_block
 cv_wait
 biowait
 breadn
 ufs_blkatoff
 ufs_lookup
 VOP_LOOKUP
 lookup_once
 namei_tryemulroot
 namei
 vn_open
 kobj_load_vfs
 module_load_vfs
 module_do_load
 module_autoload
 scsipi_print_sense_stub
 scsipi_interpret_sense
 scsipi_complete
 scsipi_execute_xs
 scsipi_command
 scsipi_mode_sense_big
 sd_mode_sense
 sdioctl
 spec_ioctl
 VOP_IOCTL
 spec_ioctl
 VOP_IOCTL
 wapbl_start
 ffs_wapbl_start
 ffs_mount
 VFS_MOUNT
 do_sys_mount
 sys___mount50
 syscall
 
 
 
 Greetings,
 -- 
                                 Michael van Elst
 Internet: mlelstv%serpens.de@localhost
                                 "A potential Snark may lurk in every tree."