Bug 203985 - splash reboots machine under load
Summary: splash reboots machine under load
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 10.2-RELEASE
Hardware: i386 Any
: --- Affects Many People
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-10-23 14:56 UTC by ml
Modified: 2015-10-23 14:56 UTC (History)
0 users

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Description ml 2015-10-23 14:56:42 UTC 
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.