Patch "drm/amdgpu: fix parser init error path to avoid crash in parser fini" has been added to the 4.9-stable tree

Patch "drm/amdgpu: fix parser init error path to avoid crash in parser fini" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/amdgpu: fix parser init error path to avoid crash in parser fini

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-fix-parser-init-error-path-to-avoid-crash-in-parser-fini.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Mon Dec 18 14:12:34 CET 2017
From: Dave Airlie <airlied@redhat.com>
Date: Fri, 10 Mar 2017 12:13:04 +1000
Subject: drm/amdgpu: fix parser init error path to avoid crash in parser fini

From: Dave Airlie <airlied@redhat.com>


[ Upstream commit 607523d19c9d67ba4cf7bdaced644f11ed04992c ]

If we don't reset the chunk info in the error path, the subsequent
fini path will double free.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -240,6 +240,8 @@ free_partial_kdata:
 	for (; i >= 0; i--)
 		drm_free_large(p->chunks[i].kdata);
 	kfree(p->chunks);
+	p->chunks = NULL;
+	p->nchunks = 0;
 put_ctx:
 	amdgpu_ctx_put(p->ctx);
 free_chunk:


Patches currently in stable-queue which might be from airlied@redhat.com are

queue-4.9/drm-amdgpu-fix-parser-init-error-path-to-avoid-crash-in-parser-fini.patch