On Wed, 14 Aug 2013, Gavin Atkinson wrote:
On Mon, 12 Aug 2013, AN wrote:
FreeBSD FBSD10 10.0-CURRENT FreeBSD 10.0-CURRENT #78 r253966: Mon Aug 5
14:42:05 CDT 2013 root@FBSD10:/usr/obj/usr/src/sys/MYKERNEL amd64
# svn info
Path: .
Working Copy Root Path: /usr/src
URL: svn://svn.freebsd.org/base/head
Relative URL: ^/head
Repository Root: svn://svn.freebsd.org/base
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 254252
Node Kind: directory
Schedule: normal
Last Changed Author: ed
Last Changed Rev: 254252
Last Changed Date: 2013-08-12 13:17:45 -0500 (Mon, 12 Aug 2013)
[...]
/usr/src/lib/bind/dns/../../../contrib/bind9/lib/dns/zone.c:14682:11: warning:
null character ignored
[-Wnull-character]
isc_time_
^
/usr/src/lib/bind/dns/../../../contrib/bind9/lib/dns/zone.c:14682:12: warning:
null character ignored
[-Wnull-character]
isc_time_<U+0000>
^
/usr/src/lib/bind/dns/../../../contrib/bind9/lib/dns/zone.c:14682:13: warning:
null character ignored
[-Wnull-character]
isc_time_<U+0000><U+0000>
^
[...]
/usr/src/lib/bind/dns/../../../contrib/bind9/lib/dns/zone.c:14682:23: warning:
null character ignored
[-Wnull-character]
isc_time_<U+0000><U+0000><U+0000><U+0000><U+0000><U+0000><U+0000><U+0000><U+0000><U+0000><U+0000><U+0000>
^
OK, this doesn't look good. Somehow, that file appears to contain a load
of \0 characters.
Looking into where exactly in the file this appears (lines 14678-14688):
set_resigntime(zone);
UNLOCK_ZONE(zone);
}
isc_time_settoepoch(&zone->refreshkeytime);
/*
* If we're doing key maintenance, set the key refresh timer to
* the next scheduled key event or to one hour in the future,
* whichever is sooner.
*/
The null characters start exactly at 0x60000 into the file, a page
boundary:
005ffd0 6e 74 69 6d 65 28 7a 6f 6e 65 29 3b 0a 09 09 55 |ntime(zone);...U|
005ffe0 4e 4c 4f 43 4b 5f 5a 4f 4e 45 28 7a 6f 6e 65 29 |NLOCK_ZONE(zone)|
005fff0 3b 0a 09 7d 0a 0a 09 69 73 63 5f 74 69 6d 65 5f |;..}...isc_time_|
0060000 73 65 74 74 6f 65 70 6f 63 68 28 26 7a 6f 6e 65 |settoepoch(&zone|
0060010 2d 3e 72 65 66 72 65 73 68 6b 65 79 74 69 6d 65 |->refreshkeytime|
0060020 29 3b 0a 0a 09 2f 2a 0a 09 20 2a 20 49 66 20 77 |);.../*.. * If w|
So, at least one whole page has been replaced by a page of zeros. This
feels like it could actually be a VM issue, though it could also be
storage. What drives are you using on this system (AHCI? SSD?), and are
you using anything like e.g. geom_mirror? A full dmesg may be useful.
Gavin
Hi Gavin:
Thanks for your reply. I am using AHCI on a single disk. I believe what
happened was that I had some disk corruption recently, fixed by a full
fsck in single user mode. After fixing that and rebooting I started to
see this problem. I was able to fix it by deleting /usr/src and doing a
fresh svn co. Now buildworld compiles successfully. So, it was a local
problem on this machine and not anything with the source code as I did not
see anyone else report this problem.
Thanks again for your help, sorry for the noise.
Andy
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