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=160103&action=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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