sub_spt.
Besides, leave the handle of spt destroy to caller function instead
of callee function when error occurs.
Fixes: b901b252b6cf ("drm/i915/gvt: Add 2M huge gtt support")
Signed-off-by: Zheng Wang
Reviewed-by: Zhenyu Wang
---
v6:
- remove the code for setting unused variable to NU
cation.
Best regards,
Zheng Wang
--
2.25.1
dd 2M huge gtt support")
Signed-off-by: Zheng Wang
---
v4:
- fix by undo the mapping of DMA address and free sub_spt suggested by Zhi
v3:
- correct spelling mistake and remove unused variable suggested by Greg
v2: https://lore.kernel.org/all/20221006165845.1735393-1-zyytlz...@163.com/
sub_spt.
Besides, leave the handle of spt destroy to caller function instead of
callee function when error occurs.
Fixes: b901b252b6cf ("drm/i915/gvt: Add 2M huge gtt support")
Signed-off-by: Zheng Wang
---
v5:
- remove unnecessary switch-case code for there is only one particular case,
c
isunderstand your meaning, feel free to let me know.
Working on a new fix now.
Best regards,
Zheng Wang
dd 2M huge gtt support")
Signed-off-by: Zheng Wang
---
v4:
- fix by undo the mapping of DMA address and free sub_spt suggested by Zhi
v3:
- correct spelling mistake and remove unused variable suggested by Greg
v2: https://lore.kernel.org/all/20221006165845.1735393-1-zyytlz...@163.com/
: Zheng Wang
Signed-off-by: Zheng Wang
---
v3:
- correct spelling mistake and remove unused variable suggested by Greg
v2: https://lore.kernel.org/all/20221006165845.1735393-1-zyytlz...@163.com/
v1: https://lore.kernel.org/all/20220928033340.1063949-1-zyytlz...@163.com/
---
drivers/gpu/drm/i915
: Zheng Wang
Signed-off-by: Zheng Wang
---
v2:
- split initial function into two api function suggested by Greg
v1: https://lore.kernel.org/all/20220928033340.1063949-1-zyytlz...@163.com/
---
drivers/gpu/drm/i915/gvt/gtt.c | 31 +--
1 file changed, 21 insertions(+), 10
dd 2M huge gtt support")
Reported-by: Zheng Wang
Signed-off-by: Zheng Wang
---
drivers/gpu/drm/i915/gvt/gtt.c | 16 +---
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index ce0eb03709c3..550519f0acca 10
From afe79848cb74cc8e45ab426d13fa2394c87e0422 Mon Sep 17 00:00:00 2001
From: xmzyshypnc <1002992...@qq.com>
Date: Fri, 16 Sep 2022 23:48:23 +0800
Subject: [PATCH] drm/i915/gvt: fix double-free bug in split_2MB_gtt_entry
There is a double-free security bug in split_2MB_gtt_entry.
Here is a callin
ut the caller does not notice that, and it will call
ppgtt_free_spt again in error path.
Fix this by only freeing spt in ppgtt_invalidate_spt in good case.
Reported-by: Zheng Wang Zhuorao Yang
Signed-off-by: Zheng Wang
---
drivers/gpu/drm/i915/gvt/gtt.c | 16 +---
1 file chan
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