Bug 160541 - [vimage][pf][patch] panic: userret: Returning on td 0xxxxxxxxx (pid xxxx, pftop) with vnet 0xxxxxxxxx set in pfioctl
Summary: [vimage][pf][patch] panic: userret: Returning on td 0xxxxxxxxx (pid xxxx, pft...
Status: Closed DUPLICATE of bug 194515
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 9.0-CURRENT
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-virtualization (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-09-07 15:20 UTC by nvass
Modified: 2014-12-13 12:56 UTC (History)
1 user (show)

See Also:

Attachments
file.diff (1.14 KB, patch)
2011-09-07 15:20 UTC, nvass 		no flags Details | Diff
View All Add an attachment (proposed patch, testcase, etc.)

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Description nvass 2011-09-07 15:20:06 UTC 
A VIMAGE kernel panics when certain pf IOCTLs are used. The
panic is triggered by pftop for example.

Unread portion of the kernel message buffer:
panic: userret: Returning on td 0xc3a0e2e0 (pid 1311, pftop) with vnet 0xc35a9000 set in pfioctl
cpuid = 0
KDB: enter: panic
Physical memory: 491 MB
Dumping 55 MB: 40 24 8

Fix: For certain IOCTLs, CURVNET_RESTORE() is not called
upon return from pfioctl():/sys/contrib/pf/net/pf_ioctl.c

Patch attached with submission follows:
How-To-Repeat: build a VIMAGE kernel
build pftop port
kldload pf
run pftop and cycle through the views
the kernel will panic
Comment 1 Mark Linimon freebsd_committer freebsd_triage 2011-09-08 07:12:12 UTC 
Responsible Changed
From-To: freebsd-bugs->freebsd-pf

Over to maintainer(s).
Comment 2 Bjoern A. Zeeb freebsd_committer freebsd_triage 2011-09-09 22:45:13 UTC 
Responsible Changed
From-To: freebsd-pf->freebsd-virtualization

Re-assign to right mailing list
Comment 3 Craig Rodrigues freebsd_committer freebsd_triage 2014-12-13 12:56:24 UTC 

*** This bug has been marked as a duplicate of bug 194515 ***