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SubjectRe: 2.6.9-rc2-mm4 ps hang ?
On Fri, 2004-10-01 at 16:49, Andrew Morton wrote:
> Badari Pulavarty <> wrote:
> >
> > Here is the full sysrq-t output.
> What's this guy up to?
> Something is seriously screwed up if it's stuck in try_to_wake_up(). Tried
> generating a few extra traces?
> Then again, maybe we're missing an up_read() somewhere. hrm, I'll check.

It reproduced again. I think this is the one causing all the troubles..

db2fmcd D ffffffff80132e2a 0 10854 7636
00000101bae85ef8 0000000000000002 0000020800000018 00000101d9ddd550
0000000100000084 000001016d490e20 000001016d491158
0000000000000206 ffffffff801353cb
Call Trace:<ffffffff801353cb>{try_to_wake_up+971}
when I tried looking at /proc/10854 - it hung.

elm3b29:~ # cd /proc/10854
elm3b29:/proc/10854 # l

ls D 000000000051bb70 0 28029 27737
00000101ac9b1e28 0000000000000006 702e6d6574737973 ffffffff8054f240
000000000000009f 00000101df4fa9a0 00000101df4facd8
000000d000000002 00000101ac9b1e68
Call Trace:<ffffffff80445692>{__down_read+130}

I have no idea what db2fmcd is stuck on. I will try to find out more..


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