[Bug 203985] splash reboots machine under load

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Oct 23 14:56:42 UTC 2015


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203985

            Bug ID: 203985
           Summary: splash reboots machine under load
           Product: Base System
           Version: 10.2-RELEASE
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: ml at netfence.it

I had a machine which kept rebooting spontaneously: no crash dump, no message,
nothing; only a sudden reboot with nothing in the logs.
Adding INVARIANTS, WITNESS, SOCKBUF_DEBUG, DEBUG_VFS_LOCKS, DEBUG_MEMGUARD and
DIAGNOSTIC did not produce any message.
I threw DDB into the picture, but it won't be brough up; only a plain reboot.

The culprit seems to be splash, as this behaviour stopped when I disabled it.



Steps to reproduce:
_ install 10.1 or 10.2 i386 (no installed port or running deamon needed);
_ put the following lines in /boot/loader.conf:
  splash_bmp_load="YES"
  bitmap_load="YES"
  bitmap_name="/boot/splash.bmp"
_ choose a 320x200x8 image for /boot/splash.bmp;
_ issue a "make kernel": it will rarely get to the end, most of the times
rebooting within seconds.

Put 'blanktime="NO"' in /etc/rc.conf and kernel can be built again.


This happens on i386, but not on amd64.

Altough I have no 9.x or earlier box to try now, I've been using this config
for several years and never experienced this problem.

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