Date: Wed, 19 May 1999 05:39:06 -0700 (PDT) From: lha@stacken.kth.se To: freebsd-gnats-submit@freebsd.org Subject: kern/11779: kernel panic in module_release Message-ID: <19990519123906.1E72814EA6@hub.freebsd.org>
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>Number: 11779
>Category: kern
>Synopsis: kernel panic in module_release
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed May 19 05:40:00 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Love
>Release: current
>Organization:
Stacken
>Environment:
FreeBSD mulet.e.kth.se 4.0-CURRENT FreeBSD 4.0-CURRENT #2: Wed May 19 14:26:24 CEST 1999 root@mulet.e.kth.se:/usr/src/sys/compile/MULET i386
>Description:
page fault in module_release when doing a kld_unload
The pagefault is in the last TAILQ_REMOVE in module_release (kern/kern_module.c:1.17)
stacktrace:
module_release
linker_file_unload
kld_unload
syscall
>How-To-Repeat:
load and unload a kld
>Fix:
The following patch seams to fix the bug, and this code was
remove in patch kern/kern_module.c: 1.16 to 1.17 by peter
--- kern_module.c.old Wed May 19 14:08:25 1999
+++ kern_module.c Wed May 19 14:16:08 1999
@@ -136,6 +136,7 @@
container = linker_current_file;
if (container)
TAILQ_INSERT_TAIL(&container->modules, newmod, flink);
+ newmod->file = container;
return 0;
}
>Release-Note:
>Audit-Trail:
>Unformatted:
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