Author: jhb
Date: Thu Feb 5 23:01:36 2009
New Revision: 188209
URL: http://svn.freebsd.org/changeset/base/188209
Log:
Drop the kernel linker lock while running SYSUNINIT routines and removing
sysctls during a linker file unload. We drop the lock when doing similar
operations during a linker file load. To close races, clear the LINKED
flag before dropping the lock so that the linker file is no longer visible
to userland.
MFC after: 1 week
Modified:
head/sys/kern/kern_linker.c
Modified: head/sys/kern/kern_linker.c
==============================================================================
--- head/sys/kern/kern_linker.c Thu Feb 5 22:19:13 2009 (r188208)
+++ head/sys/kern/kern_linker.c Thu Feb 5 23:01:36 2009 (r188209)
@@ -643,8 +643,11 @@ linker_file_unload(linker_file_t file, i
* link error.
*/
if (file->flags & LINKER_FILE_LINKED) {
+ file->flags &= ~LINKER_FILE_LINKED;
+ KLD_UNLOCK();
linker_file_sysuninit(file);
linker_file_unregister_sysctls(file);
+ KLD_LOCK();
}
TAILQ_REMOVE(&linker_files, file, link);
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
