Bug 158231 - [nullfs] panic on unmounting nullfs mounted over ufs on usb stick that got detached
Summary: [nullfs] panic on unmounting nullfs mounted over ufs on usb stick that got de...
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: Unspecified
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-06-23 20:00 UTC by Paul B. Mahol
Modified: 2017-12-31 22:32 UTC (History)
0 users

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Paul B. Mahol 2011-06-23 20:00:22 UTC 
panic when umounting nullfs if target is gone.

How-To-Repeat: Mount usb stick, da0s1a (ufs fs) on /mnt mount point. Now use nullfs to mount usb file system directory onto / subdirectory on ada0s1a, for example:

mount_nullfs /mnt/path/to/dir /usr/some/stuff_on_hard_disk

Umount (force) or detach usb stick. Force umount of nullfs, kernel will panic.
Comment 1 Mark Linimon freebsd_committer freebsd_triage 2011-06-24 01:33:29 UTC 
Responsible Changed
From-To: freebsd-bugs->freebsd-fs

Over to maintainer(s).
Comment 2 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 07:59:07 UTC 
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

Mail being skipped