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SubjectRe: CFS review

* Rene Herman <rene.herman@gmail.com> wrote:

> Realised the BUGs may mean the kernel DRM people could want to be in CC...

and note that the schedule() call in there is not part of the crash
backtrace:

> >Call Trace:
> > [<c10fa54b>] drm_lock+0x255/0x2de
> > [<c10ff28d>] mga_dma_buffers+0x0/0x2e3
> > [<c10f87fc>] drm_ioctl+0x142/0x18a
> > [<c1005973>] do_IRQ+0x97/0xb0
> > [<c10f86ba>] drm_ioctl+0x0/0x18a
> > [<c10f86ba>] drm_ioctl+0x0/0x18a
> > [<c105b0d7>] do_ioctl+0x87/0x9f
> > [<c105b32c>] vfs_ioctl+0x23d/0x250
> > [<c11b533e>] schedule+0x2d0/0x2e6
> > [<c105b372>] sys_ioctl+0x33/0x4d
> > [<c1003d1e>] syscall_call+0x7/0xb

it just happened to be on the kernel stack. Nor is the do_IRQ() entry
real. Both are frequent functions (and were executed recently) that's
why they were still in the stackframe.

Ingo
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