* [PATCH AUTOSEL 6.6 09/11] drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers
[not found] <20231112132736.175494-1-sashal@kernel.org>
@ 2023-11-12 13:27 ` Sasha Levin
2023-11-12 18:00 ` Alex Deucher
2023-11-12 13:27 ` [PATCH AUTOSEL 6.6 10/11] drm/amd/display: Avoid NULL dereference of timing generator Sasha Levin
1 sibling, 1 reply; 5+ messages in thread
From: Sasha Levin @ 2023-11-12 13:27 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Sasha Levin, airlied, dri-devel, amd-gfx, Mario Limonciello,
Alex Deucher, Christian König
From: Alex Deucher <alexander.deucher@amd.com>
[ Upstream commit 49afe91370b86566857a3c2c39612cf098110885 ]
For pptable structs that use flexible array sizes, use flexible arrays.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2039926
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h | 4 ++--
.../amd/pm/powerplay/hwmgr/vega10_pptable.h | 24 +++++++++----------
2 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h
index 7a31cfa5e7fb4..df7cab1a571b3 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h
@@ -367,7 +367,7 @@ typedef struct _ATOM_Tonga_VCE_State_Record {
typedef struct _ATOM_Tonga_VCE_State_Table {
UCHAR ucRevId;
UCHAR ucNumEntries;
- ATOM_Tonga_VCE_State_Record entries[1];
+ ATOM_Tonga_VCE_State_Record entries[];
} ATOM_Tonga_VCE_State_Table;
typedef struct _ATOM_Tonga_PowerTune_Table {
@@ -481,7 +481,7 @@ typedef struct _ATOM_Tonga_Hard_Limit_Record {
typedef struct _ATOM_Tonga_Hard_Limit_Table {
UCHAR ucRevId;
UCHAR ucNumEntries;
- ATOM_Tonga_Hard_Limit_Record entries[1];
+ ATOM_Tonga_Hard_Limit_Record entries[];
} ATOM_Tonga_Hard_Limit_Table;
typedef struct _ATOM_Tonga_GPIO_Table {
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
index 8b0590b834cca..de2926df5ed74 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
@@ -129,7 +129,7 @@ typedef struct _ATOM_Vega10_State {
typedef struct _ATOM_Vega10_State_Array {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Vega10_State states[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_State states[]; /* Dynamically allocate entries. */
} ATOM_Vega10_State_Array;
typedef struct _ATOM_Vega10_CLK_Dependency_Record {
@@ -169,37 +169,37 @@ typedef struct _ATOM_Vega10_GFXCLK_Dependency_Table {
typedef struct _ATOM_Vega10_MCLK_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Vega10_MCLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_MCLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Vega10_MCLK_Dependency_Table;
typedef struct _ATOM_Vega10_SOCCLK_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Vega10_SOCCLK_Dependency_Table;
typedef struct _ATOM_Vega10_DCEFCLK_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Vega10_DCEFCLK_Dependency_Table;
typedef struct _ATOM_Vega10_PIXCLK_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Vega10_PIXCLK_Dependency_Table;
typedef struct _ATOM_Vega10_DISPCLK_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries.*/
- ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Vega10_DISPCLK_Dependency_Table;
typedef struct _ATOM_Vega10_PHYCLK_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Vega10_PHYCLK_Dependency_Table;
typedef struct _ATOM_Vega10_MM_Dependency_Record {
@@ -213,7 +213,7 @@ typedef struct _ATOM_Vega10_MM_Dependency_Record {
typedef struct _ATOM_Vega10_MM_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries */
- ATOM_Vega10_MM_Dependency_Record entries[1]; /* Dynamically allocate entries */
+ ATOM_Vega10_MM_Dependency_Record entries[]; /* Dynamically allocate entries */
} ATOM_Vega10_MM_Dependency_Table;
typedef struct _ATOM_Vega10_PCIE_Record {
@@ -225,7 +225,7 @@ typedef struct _ATOM_Vega10_PCIE_Record {
typedef struct _ATOM_Vega10_PCIE_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries */
- ATOM_Vega10_PCIE_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Vega10_PCIE_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Vega10_PCIE_Table;
typedef struct _ATOM_Vega10_Voltage_Lookup_Record {
@@ -235,7 +235,7 @@ typedef struct _ATOM_Vega10_Voltage_Lookup_Record {
typedef struct _ATOM_Vega10_Voltage_Lookup_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries */
- ATOM_Vega10_Voltage_Lookup_Record entries[1]; /* Dynamically allocate entries */
+ ATOM_Vega10_Voltage_Lookup_Record entries[]; /* Dynamically allocate entries */
} ATOM_Vega10_Voltage_Lookup_Table;
typedef struct _ATOM_Vega10_Fan_Table {
@@ -327,7 +327,7 @@ typedef struct _ATOM_Vega10_VCE_State_Record {
typedef struct _ATOM_Vega10_VCE_State_Table {
UCHAR ucRevId;
UCHAR ucNumEntries;
- ATOM_Vega10_VCE_State_Record entries[1];
+ ATOM_Vega10_VCE_State_Record entries[];
} ATOM_Vega10_VCE_State_Table;
typedef struct _ATOM_Vega10_PowerTune_Table {
@@ -427,7 +427,7 @@ typedef struct _ATOM_Vega10_Hard_Limit_Record {
typedef struct _ATOM_Vega10_Hard_Limit_Table {
UCHAR ucRevId;
UCHAR ucNumEntries;
- ATOM_Vega10_Hard_Limit_Record entries[1];
+ ATOM_Vega10_Hard_Limit_Record entries[];
} ATOM_Vega10_Hard_Limit_Table;
typedef struct _Vega10_PPTable_Generic_SubTable_Header {
--
2.42.0
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH AUTOSEL 6.6 10/11] drm/amd/display: Avoid NULL dereference of timing generator
[not found] <20231112132736.175494-1-sashal@kernel.org>
2023-11-12 13:27 ` [PATCH AUTOSEL 6.6 09/11] drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers Sasha Levin
@ 2023-11-12 13:27 ` Sasha Levin
1 sibling, 0 replies; 5+ messages in thread
From: Sasha Levin @ 2023-11-12 13:27 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Sasha Levin, airlied, amd-gfx, Daniel Wheeler, Hersen Wu,
dri-devel, Wayne Lin, Alex Deucher, Jun Lei, christian.koenig
From: Wayne Lin <wayne.lin@amd.com>
[ Upstream commit b1904ed480cee3f9f4036ea0e36d139cb5fee2d6 ]
[Why & How]
Check whether assigned timing generator is NULL or not before
accessing its funcs to prevent NULL dereference.
Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 01fe2d2fd2417..ebe571fcefe32 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -582,7 +582,7 @@ uint32_t dc_stream_get_vblank_counter(const struct dc_stream_state *stream)
for (i = 0; i < MAX_PIPES; i++) {
struct timing_generator *tg = res_ctx->pipe_ctx[i].stream_res.tg;
- if (res_ctx->pipe_ctx[i].stream != stream)
+ if (res_ctx->pipe_ctx[i].stream != stream || !tg)
continue;
return tg->funcs->get_frame_count(tg);
@@ -641,7 +641,7 @@ bool dc_stream_get_scanoutpos(const struct dc_stream_state *stream,
for (i = 0; i < MAX_PIPES; i++) {
struct timing_generator *tg = res_ctx->pipe_ctx[i].stream_res.tg;
- if (res_ctx->pipe_ctx[i].stream != stream)
+ if (res_ctx->pipe_ctx[i].stream != stream || !tg)
continue;
tg->funcs->get_scanoutpos(tg,
--
2.42.0
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH AUTOSEL 6.6 09/11] drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers
2023-11-12 13:27 ` [PATCH AUTOSEL 6.6 09/11] drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers Sasha Levin
@ 2023-11-12 18:00 ` Alex Deucher
2023-11-12 18:51 ` Sasha Levin
0 siblings, 1 reply; 5+ messages in thread
From: Alex Deucher @ 2023-11-12 18:00 UTC (permalink / raw)
To: Sasha Levin
Cc: airlied, linux-kernel, dri-devel, amd-gfx, Alex Deucher, stable,
Christian König, Mario Limonciello
On Sun, Nov 12, 2023 at 8:27 AM Sasha Levin <sashal@kernel.org> wrote:
>
> From: Alex Deucher <alexander.deucher@amd.com>
>
> [ Upstream commit 49afe91370b86566857a3c2c39612cf098110885 ]
>
> For pptable structs that use flexible array sizes, use flexible arrays.
>
> Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2039926
> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
> Acked-by: Christian König <christian.koenig@amd.com>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
I don't think any of these UBSAN flexible array changes are stable material.
Alex
> ---
> .../drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h | 4 ++--
> .../amd/pm/powerplay/hwmgr/vega10_pptable.h | 24 +++++++++----------
> 2 files changed, 14 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h
> index 7a31cfa5e7fb4..df7cab1a571b3 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h
> @@ -367,7 +367,7 @@ typedef struct _ATOM_Tonga_VCE_State_Record {
> typedef struct _ATOM_Tonga_VCE_State_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries;
> - ATOM_Tonga_VCE_State_Record entries[1];
> + ATOM_Tonga_VCE_State_Record entries[];
> } ATOM_Tonga_VCE_State_Table;
>
> typedef struct _ATOM_Tonga_PowerTune_Table {
> @@ -481,7 +481,7 @@ typedef struct _ATOM_Tonga_Hard_Limit_Record {
> typedef struct _ATOM_Tonga_Hard_Limit_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries;
> - ATOM_Tonga_Hard_Limit_Record entries[1];
> + ATOM_Tonga_Hard_Limit_Record entries[];
> } ATOM_Tonga_Hard_Limit_Table;
>
> typedef struct _ATOM_Tonga_GPIO_Table {
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
> index 8b0590b834cca..de2926df5ed74 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
> @@ -129,7 +129,7 @@ typedef struct _ATOM_Vega10_State {
> typedef struct _ATOM_Vega10_State_Array {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries. */
> - ATOM_Vega10_State states[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_State states[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_State_Array;
>
> typedef struct _ATOM_Vega10_CLK_Dependency_Record {
> @@ -169,37 +169,37 @@ typedef struct _ATOM_Vega10_GFXCLK_Dependency_Table {
> typedef struct _ATOM_Vega10_MCLK_Dependency_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries. */
> - ATOM_Vega10_MCLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_MCLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_MCLK_Dependency_Table;
>
> typedef struct _ATOM_Vega10_SOCCLK_Dependency_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries. */
> - ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_SOCCLK_Dependency_Table;
>
> typedef struct _ATOM_Vega10_DCEFCLK_Dependency_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries. */
> - ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_DCEFCLK_Dependency_Table;
>
> typedef struct _ATOM_Vega10_PIXCLK_Dependency_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries. */
> - ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_PIXCLK_Dependency_Table;
>
> typedef struct _ATOM_Vega10_DISPCLK_Dependency_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries.*/
> - ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_DISPCLK_Dependency_Table;
>
> typedef struct _ATOM_Vega10_PHYCLK_Dependency_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries. */
> - ATOM_Vega10_CLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_CLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_PHYCLK_Dependency_Table;
>
> typedef struct _ATOM_Vega10_MM_Dependency_Record {
> @@ -213,7 +213,7 @@ typedef struct _ATOM_Vega10_MM_Dependency_Record {
> typedef struct _ATOM_Vega10_MM_Dependency_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries */
> - ATOM_Vega10_MM_Dependency_Record entries[1]; /* Dynamically allocate entries */
> + ATOM_Vega10_MM_Dependency_Record entries[]; /* Dynamically allocate entries */
> } ATOM_Vega10_MM_Dependency_Table;
>
> typedef struct _ATOM_Vega10_PCIE_Record {
> @@ -225,7 +225,7 @@ typedef struct _ATOM_Vega10_PCIE_Record {
> typedef struct _ATOM_Vega10_PCIE_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries */
> - ATOM_Vega10_PCIE_Record entries[1]; /* Dynamically allocate entries. */
> + ATOM_Vega10_PCIE_Record entries[]; /* Dynamically allocate entries. */
> } ATOM_Vega10_PCIE_Table;
>
> typedef struct _ATOM_Vega10_Voltage_Lookup_Record {
> @@ -235,7 +235,7 @@ typedef struct _ATOM_Vega10_Voltage_Lookup_Record {
> typedef struct _ATOM_Vega10_Voltage_Lookup_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries; /* Number of entries */
> - ATOM_Vega10_Voltage_Lookup_Record entries[1]; /* Dynamically allocate entries */
> + ATOM_Vega10_Voltage_Lookup_Record entries[]; /* Dynamically allocate entries */
> } ATOM_Vega10_Voltage_Lookup_Table;
>
> typedef struct _ATOM_Vega10_Fan_Table {
> @@ -327,7 +327,7 @@ typedef struct _ATOM_Vega10_VCE_State_Record {
> typedef struct _ATOM_Vega10_VCE_State_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries;
> - ATOM_Vega10_VCE_State_Record entries[1];
> + ATOM_Vega10_VCE_State_Record entries[];
> } ATOM_Vega10_VCE_State_Table;
>
> typedef struct _ATOM_Vega10_PowerTune_Table {
> @@ -427,7 +427,7 @@ typedef struct _ATOM_Vega10_Hard_Limit_Record {
> typedef struct _ATOM_Vega10_Hard_Limit_Table {
> UCHAR ucRevId;
> UCHAR ucNumEntries;
> - ATOM_Vega10_Hard_Limit_Record entries[1];
> + ATOM_Vega10_Hard_Limit_Record entries[];
> } ATOM_Vega10_Hard_Limit_Table;
>
> typedef struct _Vega10_PPTable_Generic_SubTable_Header {
> --
> 2.42.0
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH AUTOSEL 6.6 09/11] drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers
2023-11-12 18:00 ` Alex Deucher
@ 2023-11-12 18:51 ` Sasha Levin
2023-11-14 9:31 ` Pavel Machek
0 siblings, 1 reply; 5+ messages in thread
From: Sasha Levin @ 2023-11-12 18:51 UTC (permalink / raw)
To: Alex Deucher
Cc: airlied, linux-kernel, dri-devel, amd-gfx, Alex Deucher, stable,
Christian König, Mario Limonciello
On Sun, Nov 12, 2023 at 01:00:37PM -0500, Alex Deucher wrote:
>On Sun, Nov 12, 2023 at 8:27 AM Sasha Levin <sashal@kernel.org> wrote:
>>
>> From: Alex Deucher <alexander.deucher@amd.com>
>>
>> [ Upstream commit 49afe91370b86566857a3c2c39612cf098110885 ]
>>
>> For pptable structs that use flexible array sizes, use flexible arrays.
>>
>> Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2039926
>> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
>> Acked-by: Christian König <christian.koenig@amd.com>
>> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>> Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>I don't think any of these UBSAN flexible array changes are stable material.
I'll drop it, but in general we've been taking kasan/ubsan/kcsan/...
annotation fixes since it enables (easier) testing on the LTS trees, and
for example finding issues specific to those LTS trees.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH AUTOSEL 6.6 09/11] drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers
2023-11-12 18:51 ` Sasha Levin
@ 2023-11-14 9:31 ` Pavel Machek
0 siblings, 0 replies; 5+ messages in thread
From: Pavel Machek @ 2023-11-14 9:31 UTC (permalink / raw)
To: Sasha Levin
Cc: airlied, linux-kernel, dri-devel, Alex Deucher, amd-gfx, stable,
Christian König, Mario Limonciello
[-- Attachment #1: Type: text/plain, Size: 1126 bytes --]
Hi!
> > > From: Alex Deucher <alexander.deucher@amd.com>
> > >
> > > [ Upstream commit 49afe91370b86566857a3c2c39612cf098110885 ]
> > >
> > > For pptable structs that use flexible array sizes, use flexible arrays.
> > >
> > > Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2039926
> > > Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
> > > Acked-by: Christian König <christian.koenig@amd.com>
> > > Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> > > Signed-off-by: Sasha Levin <sashal@kernel.org>
> >
> > I don't think any of these UBSAN flexible array changes are stable material.
>
> I'll drop it, but in general we've been taking kasan/ubsan/kcsan/...
> annotation fixes since it enables (easier) testing on the LTS trees, and
> for example finding issues specific to those LTS trees.
I believe they should not be in stable, either.
In any case, Documentation/process/stable-kernel-rules.rst should be
updated, because it contradicts current practice.
Best regards,
Pavel
--
People of Russia, stop Putin before his war on Ukraine escalates.
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^ permalink raw reply [flat|nested] 5+ messages in thread
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2023-11-12 13:27 ` [PATCH AUTOSEL 6.6 09/11] drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers Sasha Levin
2023-11-12 18:00 ` Alex Deucher
2023-11-12 18:51 ` Sasha Levin
2023-11-14 9:31 ` Pavel Machek
2023-11-12 13:27 ` [PATCH AUTOSEL 6.6 10/11] drm/amd/display: Avoid NULL dereference of timing generator Sasha Levin
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