Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 13 Jan 2012 13:08:08 -0800 | Subject | Re: x86/mce: machine check warning during poweroff |
| |
On Fri, Jan 13, 2012 at 12:53 PM, Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> wrote: > > Wait a minute, did you mention "second attempt"? I think I have something > interesting..
Yes, I think you're hitting the exact same thing.
I *think* that what is going on is that we free some data structure too early, and we didn't use to free them before. I tried to see if I could catch it with slab and list debugging, but I didn't see anything, and the machine I used for suspend/resume had other issues too (wireless network - which is the *only* network on that machine - hung on resume), so I ended up punting and just disabling MCE to concentrate on those issues.
On eof the differences between sysdev and 'struct device' is that sysdev doesn't bother refcounting parents etc. So there could have been some refcount problem that was never relevant with the old sysdev code. I dunno.
The wireless issues got resolved for me, and I haven't gotten back to MCE yet. I was *really* hoping that somebody else could figure it out, since I'm not the only one seeing it..
Linus
| |