linux-kernel - [PATCH] drm/nouveau/gr/gf100-: unlock mutex failing to create golden context

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Message-ID: <20231103024119.15031-1-dakr@redhat.com>
Date:   Fri,  3 Nov 2023 03:41:06 +0100
From:   Danilo Krummrich <dakr@...hat.com>
To:     nouveau@...ts.freedesktop.org, faith@...strand.net
Cc:     lyude@...hat.com, kherbst@...hat.com, airlied@...il.com,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Danilo Krummrich <dakr@...hat.com>, stable@...r.kernel.org
Subject: [PATCH] drm/nouveau/gr/gf100-: unlock mutex failing to create golden context

Do not return from gf100_gr_chan_new() with fecs mutex held when failing
to create the golden context image.

Cc: <stable@...r.kernel.org> # v6.2+
Fixes: ca081fff6ecc ("drm/nouveau/gr/gf100-: generate golden context during first object alloc")
Signed-off-by: Danilo Krummrich <dakr@...hat.com>
---
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index c494a1ff2d57..f72d3aa33442 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -442,6 +442,7 @@ gf100_gr_chan_new(struct nvkm_gr *base, struct nvkm_chan *fifoch,
 	if (gr->data == NULL) {
 		ret = gf100_grctx_generate(gr, chan, fifoch->inst);
 		if (ret) {
+			mutex_unlock(&gr->fecs.mutex);
 			nvkm_error(&base->engine.subdev, "failed to construct context\n");
 			return ret;
 		}
-- 
2.41.0