linux-kernel - [PATCH next] drm/amdgpu: unlock and cleanup on error in amdgpu_cs_parser

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Message-ID: <aPi53iS_z4y4uVef@stanley.mountain>
Date: Wed, 22 Oct 2025 14:02:54 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Sunil Khatri <sunil.khatri@....com>
Cc: Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Srinivasan Shanmugam <srinivasan.shanmugam@....com>,
	Liu01 Tong <Tong.Liu01@....com>,
	Tvrtko Ursulin <tvrtko.ursulin@...lia.com>,
	Mario Limonciello <mario.limonciello@....com>,
	amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH next] drm/amdgpu: unlock and cleanup on error in
 amdgpu_cs_parser_bos()

If amdgpu_hmm_range_alloc() fails then free the previous iterations and
call mutex_unlock(&p->bo_list->bo_list_mutex) before returning.

Fixes: e095b55155ef ("drm/amdgpu: use user provided hmm_range buffer in amdgpu_ttm_tt_get_user_pages")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index ecdfe6cb36cc..dac0b15823f2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -892,8 +892,10 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
 		struct amdgpu_bo *bo = e->bo;
 
 		e->range = amdgpu_hmm_range_alloc(NULL);
-		if (unlikely(!e->range))
-			return -ENOMEM;
+		if (unlikely(!e->range)) {
+			r = -ENOMEM;
+			goto out_free_user_pages;
+		}
 
 		r = amdgpu_ttm_tt_get_user_pages(bo, e->range);
 		if (r)
-- 
2.51.0