On Mon, Jul 22, 2013 at 11:50:24AM +0200, Dominic Fandrey wrote: > Occasionally stopping amd freezes my system. It's a rare occurrence, > and I haven't found a reliable way to reproduce it. > > It's also a real freeze, so there's no way to get into the debugger > or grab a core dump. I only can perform the 4 seconds hard shutdown to > revive the system. > > I run amd through sysutils/automounter, which is a scripting solution > that generates an amd.map file based on encountered devices and devd > events. The SIGHUP it sends to amd to tell it the map file was updated > does not cause problems, only a SIGKILL may cause the freeze. > > Nothing was mounted (by amd) during the last freeze. > > I don't see any angle to tackle this, but I'm throwing it out here > any way, in the hopes that someone actually has an idea how to approach > the issue.
Are you sure that the machine did not paniced ? Do you have serial console ? The amd(8) locks itself into memory, most likely due to the fear of deadlock. There are some known issues with user wirings in stable/9. If the problem you see is indeed due to wiring, you might try to apply r253187-r253191.
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