kern/119564: commit references a PR
dfilter service
dfilter at FreeBSD.ORG
Sat Nov 7 21:50:05 UTC 2009
The following reply was made to PR kern/119564; it has been noted by GNATS.
From: dfilter at FreeBSD.ORG (dfilter service)
To: bug-followup at FreeBSD.org
Cc:
Subject: Re: kern/119564: commit references a PR
Date: Sat, 7 Nov 2009 21:46:44 +0000 (UTC)
Author: attilio
Date: Sat Nov 7 21:46:34 2009
New Revision: 199024
URL: http://svn.freebsd.org/changeset/base/199024
Log:
Use a safety belt for cases where corrupted narg can be passed to the
ktrsyscall(). print_number() does decrement the number of arguments,
leading to infinite loops for negative values.
Reported by: Patrick Lamaiziere <patpr at davenulle dot org>,
Jonathan Pascal <jkpyvxmzsa at mailinator dot com>
Submitted by: jh
PR: bin/120055, kern/119564
MFC: 1 week
Modified:
head/usr.bin/kdump/kdump.c
Modified: head/usr.bin/kdump/kdump.c
==============================================================================
--- head/usr.bin/kdump/kdump.c Sat Nov 7 21:28:21 2009 (r199023)
+++ head/usr.bin/kdump/kdump.c Sat Nov 7 21:46:34 2009 (r199024)
@@ -799,7 +799,7 @@ ktrsyscall(struct ktr_syscall *ktr)
narg--;
}
}
- while (narg) {
+ while (narg > 0) {
print_number(ip,narg,c);
}
(void)putchar(')');
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