CVS commit: src/sys/kern

["Ryo Shimizu" <ryo%netbsd.org@localhost>]

Module Name:    src
Committed By:   ryo
Date:           Thu Nov 25 02:37:38 UTC 2021

Modified Files:
        src/sys/kern: kern_exec.c

Log Message:
Fix anonymous memory object leak for sigcode.

- Repeating "modload compat_linux && /emul/linux/bin/ls && modunload compat_linux"
  will reproduce this problem.
- It cause in exec_sigcode_map(), anon-object for sigcode was created at
  first exec, but it remained even after exec_remove.
- Fixed that the anon-object for sigcode is created at exec_add(), and the
  anon-object reference is removed at exec_remove().
- sigobject_lock is no longer needed since it is locked by exec_lock.


To generate a diff of this commit:
cvs rdiff -u -r1.511 -r1.512 src/sys/kern/kern_exec.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.