5.15-stable review patch. If anyone has any objections, please let me know.
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From: Chris Wilson chris.p.wilson@intel.com
commit 78a033433a5ae4fee85511ee075bc9a48312c79e upstream.
If we abort driver initialisation in the middle of gt/engine discovery, some engines will be fully setup and some not. Those incompletely setup engines only have 'engine->release == NULL' and so will leak any of the common objects allocated.
v2: - Drop the destroy_pinned_context() helper for now. It's not really worth it with just a single callsite at the moment. (Janusz)
Signed-off-by: Chris Wilson chris.p.wilson@intel.com Cc: Janusz Krzysztofik janusz.krzysztofik@linux.intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com Reviewed-by: Janusz Krzysztofik janusz.krzysztofik@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20220915232654.3283095-2-matth... Signed-off-by: Zhi Yang Zhi.Yang@windriver.com Signed-off-by: He Zhe zhe.he@windriver.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -983,8 +983,13 @@ int intel_engines_init(struct intel_gt * return err;
err = setup(engine); - if (err) + if (err) { + intel_engine_cleanup_common(engine); return err; + } + + /* The backend should now be responsible for cleanup */ + GEM_BUG_ON(engine->release == NULL);
err = engine_init_common(engine); if (err)