Author: rstone
Date: Tue Nov 8 15:17:54 2011
New Revision: 227342
URL: http://svn.freebsd.org/changeset/base/227342
Log:
The in-kernel CTF parser caches the result of its first attempt to parse
CTF data from a module. On subsequent attempts to retrieve CTF data for
a module, return an error if there no CTF data.
This fixes a panic if you try to enable fbt probes on a module with CTF
data twice.
Submitted by: Paul Ambrose (ambrosehua AT gmail DOT com)
MFC after: 3 days
Modified:
head/sys/kern/kern_ctf.c
Modified: head/sys/kern/kern_ctf.c
==============================================================================
--- head/sys/kern/kern_ctf.c Tue Nov 8 14:47:28 2011 (r227341)
+++ head/sys/kern/kern_ctf.c Tue Nov 8 15:17:54 2011 (r227342)
@@ -90,7 +90,7 @@ link_elf_ctf_get(linker_file_t lf, linke
* ctfcnt to -1. See below.
*/
if (ef->ctfcnt < 0)
- return (0);
+ return (EFTYPE);
/* Now check if we've already loaded the CTF data.. */
if (ef->ctfcnt > 0) {
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