On Mon, 2 Jun 2003, Jeff Roberson wrote:
If you have had issues with libthr on SMP or umtx panics, the following patch may solve these issues.
http://www.chesapeake.net/~jroberson/umtxlocks.diff
This patch fixes several race conditions and other issues with umtx.
Actually, no it doesn't. I was able to use kern_umtx v 1.3 only if I removed atapicam from my kernel config. These patches (now committed?) panic the system whether I use atapicam or not. With kern_umtx v1.2 there is no panic at all, with or without atapicam.
Actually, I think it's cam in general that's causing the panic with these changes.
Please see kern/52718
I didn't see a backtrace in the PR. Is there one that you can share with us?
Scott
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