On Sat, Oct 31, 2020 at 12:35:36PM +0100, Greg Kroah-Hartman wrote: > From: Chris Wilson <[email protected]> > > commit 4fe9af8e881d946bf60790eeb37a7c4f96e28382 upstream. > > Since the debugfs may peek into the GEM contexts as the corresponding > client/fd is being closed, we may try and follow a dangling pointer. > However, the context closure itself is serialised with the ctx->mutex, > so if we hold that mutex as we inspect the state coupled in the context, > we know the pointers within the context are stable and will remain valid > as we inspect their tables. > > Signed-off-by: Chris Wilson <[email protected]> > Cc: CQ Tang <[email protected]> > Cc: Daniel Vetter <[email protected]> > Cc: [email protected] > Reviewed-by: Tvrtko Ursulin <[email protected]> > Link: > https://patchwork.freedesktop.org/patch/msgid/[email protected] > (cherry picked from commit 102f5aa491f262c818e607fc4fee08a724a76c69) > Signed-off-by: Rodrigo Vivi <[email protected]> > Signed-off-by: Greg Kroah-Hartman <[email protected]> > > --- > drivers/gpu/drm/i915/i915_debugfs.c | 2 ++ > 1 file changed, 2 insertions(+)
Oops, nope, this breaks the build here, now dropping it... greg k-h
