PR/59527 CVS commit: src/sys/netinet

["Ryota Ozaki" <ozaki-r%netbsd.org@localhost>]

The following reply was made to PR kern/59527; it has been noted by GNATS.

From: "Ryota Ozaki" <ozaki-r%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/59527 CVS commit: src/sys/netinet
Date: Thu, 17 Jul 2025 06:48:39 +0000

 Module Name:	src
 Committed By:	ozaki-r
 Date:		Thu Jul 17 06:48:39 UTC 2025
 
 Modified Files:
 	src/sys/netinet: ip_output.c
 
 Log Message:
 in: avoid racy ifa_acquire(rt->rt_ifa) in ip_output()
 
 If a rtentry is being destroyed asynchronously, ifa referenced by rt_ifa
 can be destructed and taking ifa_acquire(rt->rt_ifa) aborts with a
 KASSERT failure.  Fortunately, the ifa is not actually freed because of
 a reference by rt_ifa, it can be available (except some functions like
 psref) so as long the rtentry is held.
 
 PR kern/59527
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.329 -r1.330 src/sys/netinet/ip_output.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.