Robert Huff wrote:
Jonathan Chen writes:
> I am seeing the following messages, which appear to indicate a memory
> overwrite:
> Waiting (max 60 seconds) for system processs 'vnlru' to stop...done
> Waiting (max 60 seconds) for system processs 'bufdaemon' to stop...done
> a
> iStyinncgi n(gm adxi s6k0s ,s evcnoonddess) rfeomra isnyisntge.m. .pr0o
> cess 'syncer' to stop...0 0 done
> All buffers synced.
> Uptime: 8m9s
It's an interleaved buffer messages on SMP systems. The problem is
known, but I haven't heard of a proposed solution yet.
There is no fix.
The workaround is to increase the size of the kernel printf()
buffer. I don't remember how you do that ... but this is not a new
issue - chech the archives for details.
I would like to propose a fix. Care to test it?
Just apply this patch and add the following line to your /etc/rc.conf file.
shutdown_clean_enable="YES"
--- rc.shutdown 2008-02-20 19:28:45.000000000 +0100
+++ /etc/rc.shutdown 2008-02-20 19:59:03.000000000 +0100
@@ -43,10 +43,21 @@
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin
export HOME PATH
+# The next three lines belong into /etc/defaults/rc.conf.
+shutdown_clean_enable="NO" # Set to YES to stop all but the first CPU
+ # core to prevent mixed buffer output
+ # upon shutdown.
+
. /etc/rc.subr
load_rc_config 'XXX'
+# Fall back to single core mode to guarantee clean output.
+if checkyesno shutdown_clean_enable; then
+ bitmask="$(jot -s '' -b1 $(expr $(sysctl -n hw.ncpu) - 1))0"
+ sysctl machdep.hlt_cpus=$bitmask
+fi
+
# reverse_list list
# print the list in reverse order
#
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