[Bug 202482] [patch] [regression] mbuf(9): m_unshare() drops m_pkthdr after r248371

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202482

Gleb Smirnoff  changed:

   What|Removed |Added

 Status|New |In Progress
   Assignee|freebsd-bugs@FreeBSD.org|gleb...@freebsd.org

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[Bug 202482] [patch] [regression] mbuf(9): m_unshare() drops m_pkthdr after r248371

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202482

Bug ID: 202482
   Summary: [patch] [regression] mbuf(9): m_unshare() drops
m_pkthdr after r248371
   Product: Base System
   Version: 11.0-CURRENT
  Hardware: Any
OS: Any
Status: New
  Keywords: patch, regression
  Severity: Affects Some People
  Priority: ---
 Component: kern
  Assignee: freebsd-bugs@FreeBSD.org
  Reporter: s3er...@gmail.com
  Keywords: patch, regression

Created attachment 160103
  -- https://bugs.freebsd.org/bugzilla/attachment.cgi?id=160103action=edit
Reverse patch for r248371

This change causes kernel panics on some configurations.

How-to-reproduce:
Add a wireless card without hardware encryption into a bridge.
While sending a packet, m_unshare() in ieee80211_mbuf_adjust() will discard
m-m_pkthdr.rcvif after it was initialized in the ieee80211_vap_pkt_send_dest()
(mbuf must be marked as read-only).

The patch reverts this commit.

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[Bug 202482] [patch] [regression] mbuf(9): m_unshare() drops m_pkthdr after r248371

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202482

Andriy Voskoboinyk s3er...@gmail.com changed:

   What|Removed |Added

 Blocks||195074

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