On Tue, Nov 05, 2019 at 12:44:06PM -0500, Brennan Vincent wrote: > (Note: I have also posted this to the forums, but upon reading the forum > guidelines more carefully I realized the mailing list is probably a better > venue. So if you are also a forum reader, I apologize for the extra churn.) > > Hello, I am running 13-CURRENT (compiled recently from source using default > build settings) and recently I have been kernel panics every so often. They > can happen at any time but seem to be more likely when the system is running > a graphical environment and is at high load (e.g., during `make -j64 > buildworld`). > > I have configured my system to collect core dumps: my swap partition is 50 GB > (large enough to contain any conceivable minidump), `dumpon` reports that it > is indeed configured as a dump partition, and I have `savecore_enable="YES"` > in /etc/rc.conf. I also have the sysctl `debug.debugger_on_panic` set to 0, > which seems to be necessary for core dumps to happen (instead of breaking > into the debugger on panic). Before, when that sysctl was set to 1, my > graphical environment would hand; now it reboots. The changing behavior > depending on the value of `debug.debugger_on_panic` is what makes me think > this really is a kernel panic, as opposed to some other possible issue that > could cause a crash. > > The weird thing is that when I manually cause a panic via `sudo sysctl > debug.kdb.panic=1` , my system reboots as expected, and a core dump **does** > get generated and saved in /var/crash! So it's only the mysterious random > crashes that aren't causing core dumps. > > Can anyone help me figure out why core dumps are not getting generated, and > how I can possibly debug what is going on?
Are you using one of the DRM graphics drivers? I've found that setting dev.drm.skip_ddb="1" in loader.conf is sometimes necessary. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"
