PR/39913 CVS commit: src/sys/kern

["Juergen Hannken-Illjes" <hannken%netbsd.org@localhost>]

The following reply was made to PR kern/39913; it has been noted by GNATS.

From: "Juergen Hannken-Illjes" <hannken%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/39913 CVS commit: src/sys/kern
Date: Wed, 17 Jan 2024 10:18:42 +0000

 Module Name:	src
 Committed By:	hannken
 Date:		Wed Jan 17 10:18:41 UTC 2024
 
 Modified Files:
 	src/sys/kern: init_main.c kern_hook.c
 
 Log Message:
 Protect kernel hooks exechook, exithook and forkhook with rwlock.
 Lock as writer on establish/disestablish and as reader on list traverse.
 
 For exechook ride "exec_lock" as it is already take as reader when
 traversing the list.  Add local locks for exithook and forkhook.
 
 Move exec_init before signal_init as signal_init calls exechook_establish()
 that needs "exec_lock".
 
 PR kern/39913 "exec, fork, exit hooks need locking"
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.546 -r1.547 src/sys/kern/init_main.c
 cvs rdiff -u -r1.14 -r1.15 src/sys/kern/kern_hook.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.