1 files changed, 44 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0930-drm-amdgpu-Fix-DEBUG_LOCKS_WARN_ON-depth-0-in-amdgpu.patch b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0930-drm-amdgpu-Fix-DEBUG_LOCKS_WARN_ON-depth-0-in-amdgpu.patch
new file mode 100644
index 00000000..9d4a6b42
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0930-drm-amdgpu-Fix-DEBUG_LOCKS_WARN_ON-depth-0-in-amdgpu.patch
@@ -0,0 +1,44 @@
+From d5e7c5c377e4a82fb75ecab9f5de7e972f091be6 Mon Sep 17 00:00:00 2001
+From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
+Date: Thu, 6 Dec 2018 15:51:37 -0500
+Subject: [PATCH 0930/2940] drm/amdgpu: Fix DEBUG_LOCKS_WARN_ON(depth <= 0) in
+ amdgpu_ctx.lock
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+If CS is submitted using guilty ctx, we terminate amdgpu_cs_parser_init
+before locking ctx->lock, latter in amdgpu_cs_parser_fini we still are
+trying to release the lock just becase parser->ctx != NULL.
+
+Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
+Reviewed-by: Christian König <christian.koenig@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+index 0e382b1752f7..2bcd3d74de5d 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+@@ -126,14 +126,14 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs
+ 		goto free_chunk;
+ 	}
+ 
++	mutex_lock(&p->ctx->lock);
++
+ 	/* skip guilty context job */
+ 	if (atomic_read(&p->ctx->guilty) == 1) {
+ 		ret = -ECANCELED;
+ 		goto free_chunk;
+ 	}
+ 
+-	mutex_lock(&p->ctx->lock);
+-
+ 	/* get chunks */
+ 	chunk_array_user = u64_to_user_ptr(cs->in.chunks);
+ 	if (copy_from_user(chunk_array, chunk_array_user,
+-- 
+2.17.1
+