July 2024 - Linux-stable-mirror

[PATCH 06/12] drm/v3d: Fix potential memory leak in the performance extension

by Tvrtko Ursulin

From: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> If fetching of userspace memory fails during the main loop, all drm sync objs looked up until that point will be leaked because of the missing drm_syncobj_put. Fix it by exporting and using a common cleanup helper. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> Fixes: bae7cb5d6800 ("drm/v3d: Create a CPU job extension for the reset performance query job" Cc: Maíra Canal <mcanal(a)igalia.com> Cc: Iago Toral Quiroga <itoral(a)igalia.com> Cc: <stable(a)vger.kernel.org> # v6.8+ --- drivers/gpu/drm/v3d/v3d_drv.h | 2 ++ drivers/gpu/drm/v3d/v3d_sched.c | 22 ++++++++++++----- drivers/gpu/drm/v3d/v3d_submit.c | 42 ++++++++++++++++++++------------ 3 files changed, 44 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 95651c3c926f..38c80168da51 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -565,6 +565,8 @@ void v3d_mmu_remove_ptes(struct v3d_bo *bo); /* v3d_sched.c */ void __v3d_timestamp_query_info_free(struct v3d_timestamp_query_info *qinfo, unsigned int count); +void __v3d_performance_query_info_free(struct v3d_performance_query_info *qinfo, + unsigned int count); void v3d_job_update_stats(struct v3d_job *job, enum v3d_queue queue); int v3d_sched_init(struct v3d_dev *v3d); void v3d_sched_fini(struct v3d_dev *v3d); diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c index e45d3ddc6f82..173801aa54ee 100644 --- a/drivers/gpu/drm/v3d/v3d_sched.c +++ b/drivers/gpu/drm/v3d/v3d_sched.c @@ -87,20 +87,30 @@ __v3d_timestamp_query_info_free(struct v3d_timestamp_query_info *qinfo, } } +void +__v3d_performance_query_info_free(struct v3d_performance_query_info *qinfo, + unsigned int count) +{ + if (qinfo->queries) { + unsigned int i; + + for (i = 0; i < count; i++) + drm_syncobj_put(qinfo->queries[i].syncobj); + + kvfree(qinfo->queries); + } +} + static void v3d_cpu_job_free(struct drm_sched_job *sched_job) { struct v3d_cpu_job *job = to_cpu_job(sched_job); - struct v3d_performance_query_info *performance_query = &job->performance_query; __v3d_timestamp_query_info_free(&job->timestamp_query, job->timestamp_query.count); - if (performance_query->queries) { - for (int i = 0; i < performance_query->count; i++) - drm_syncobj_put(performance_query->queries[i].syncobj); - kvfree(performance_query->queries); - } + __v3d_performance_query_info_free(&job->performance_query, + job->performance_query.count); v3d_job_cleanup(&job->base); } diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c index 0f1c900c7d35..81afcfccc6bb 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -645,6 +645,7 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, struct drm_v3d_reset_performance_query reset; struct v3d_performance_query_info *qinfo = &job->performance_query; unsigned int i, j; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -680,32 +681,36 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, u32 id; if (get_user(sync, syncs++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } - qinfo->queries[i].syncobj = drm_syncobj_find(file_priv, sync); - if (get_user(ids, kperfmon_ids++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } ids_pointer = u64_to_user_ptr(ids); for (j = 0; j < reset.nperfmons; j++) { if (get_user(id, ids_pointer++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } qinfo->queries[i].kperfmon_ids[j] = id; } + + qinfo->queries[i].syncobj = drm_syncobj_find(file_priv, sync); } qinfo->count = reset.count; qinfo->nperfmons = reset.nperfmons; return 0; + +error: + __v3d_performance_query_info_free(qinfo, i); + return err; } static int @@ -718,6 +723,7 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, struct drm_v3d_copy_performance_query copy; struct v3d_performance_query_info *qinfo = &job->performance_query; unsigned int i, j; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -756,27 +762,27 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, u32 id; if (get_user(sync, syncs++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } - qinfo->queries[i].syncobj = drm_syncobj_find(file_priv, sync); - if (get_user(ids, kperfmon_ids++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } ids_pointer = u64_to_user_ptr(ids); for (j = 0; j < copy.nperfmons; j++) { if (get_user(id, ids_pointer++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } qinfo->queries[i].kperfmon_ids[j] = id; } + + qinfo->queries[i].syncobj = drm_syncobj_find(file_priv, sync); } qinfo->count = copy.count; qinfo->nperfmons = copy.nperfmons; @@ -789,6 +795,10 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, job->copy.stride = copy.stride; return 0; + +error: + __v3d_performance_query_info_free(qinfo, i); + return err; } /* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data -- 2.44.0

8 months, 3 weeks

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[PATCH 05/12] drm/v3d: Fix potential memory leak in the timestamp extension

by Tvrtko Ursulin

From: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> If fetching of userspace memory fails during the main loop, all drm sync objs looked up until that point will be leaked because of the missing drm_syncobj_put. Fix it by exporting and using a common cleanup helper. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> Fixes: 9ba0ff3e083f ("drm/v3d: Create a CPU job extension for the timestamp query job") Cc: Maíra Canal <mcanal(a)igalia.com> Cc: Iago Toral Quiroga <itoral(a)igalia.com> Cc: <stable(a)vger.kernel.org> # v6.8+ --- drivers/gpu/drm/v3d/v3d_drv.h | 2 ++ drivers/gpu/drm/v3d/v3d_sched.c | 22 ++++++++++++++------ drivers/gpu/drm/v3d/v3d_submit.c | 35 +++++++++++++++++++++++--------- 3 files changed, 43 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 099b962bdfde..95651c3c926f 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -563,6 +563,8 @@ void v3d_mmu_insert_ptes(struct v3d_bo *bo); void v3d_mmu_remove_ptes(struct v3d_bo *bo); /* v3d_sched.c */ +void __v3d_timestamp_query_info_free(struct v3d_timestamp_query_info *qinfo, + unsigned int count); void v3d_job_update_stats(struct v3d_job *job, enum v3d_queue queue); int v3d_sched_init(struct v3d_dev *v3d); void v3d_sched_fini(struct v3d_dev *v3d); diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c index 03df37a3acf5..e45d3ddc6f82 100644 --- a/drivers/gpu/drm/v3d/v3d_sched.c +++ b/drivers/gpu/drm/v3d/v3d_sched.c @@ -73,18 +73,28 @@ v3d_sched_job_free(struct drm_sched_job *sched_job) v3d_job_cleanup(job); } +void +__v3d_timestamp_query_info_free(struct v3d_timestamp_query_info *qinfo, + unsigned int count) +{ + if (qinfo->queries) { + unsigned int i; + + for (i = 0; i < count; i++) + drm_syncobj_put(qinfo->queries[i].syncobj); + + kvfree(qinfo->queries); + } +} + static void v3d_cpu_job_free(struct drm_sched_job *sched_job) { struct v3d_cpu_job *job = to_cpu_job(sched_job); - struct v3d_timestamp_query_info *timestamp_query = &job->timestamp_query; struct v3d_performance_query_info *performance_query = &job->performance_query; - if (timestamp_query->queries) { - for (int i = 0; i < timestamp_query->count; i++) - drm_syncobj_put(timestamp_query->queries[i].syncobj); - kvfree(timestamp_query->queries); - } + __v3d_timestamp_query_info_free(&job->timestamp_query, + job->timestamp_query.count); if (performance_query->queries) { for (int i = 0; i < performance_query->count; i++) diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c index c960bc6ca32d..0f1c900c7d35 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -454,6 +454,7 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, struct drm_v3d_timestamp_query timestamp; struct v3d_timestamp_query_info *qinfo = &job->timestamp_query; unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -486,15 +487,15 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, u32 offset, sync; if (get_user(offset, offsets++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } qinfo->queries[i].offset = offset; if (get_user(sync, syncs++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } qinfo->queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -502,6 +503,10 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, qinfo->count = timestamp.count; return 0; + +error: + __v3d_timestamp_query_info_free(qinfo, i); + return err; } static int @@ -513,6 +518,7 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, struct drm_v3d_reset_timestamp_query reset; struct v3d_timestamp_query_info *qinfo = &job->timestamp_query; unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -543,8 +549,8 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, qinfo->queries[i].offset = reset.offset + 8 * i; if (get_user(sync, syncs++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } qinfo->queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -552,6 +558,10 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, qinfo->count = reset.count; return 0; + +error: + __v3d_timestamp_query_info_free(qinfo, i); + return err; } /* Get data for the copy timestamp query results job submission. */ @@ -564,6 +574,7 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, struct drm_v3d_copy_timestamp_query copy; struct v3d_timestamp_query_info *qinfo = &job->timestamp_query; unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -596,15 +607,15 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, u32 offset, sync; if (get_user(offset, offsets++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } qinfo->queries[i].offset = offset; if (get_user(sync, syncs++)) { - kvfree(qinfo->queries); - return -EFAULT; + err = -EFAULT; + goto error; } qinfo->queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -618,6 +629,10 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, job->copy.stride = copy.stride; return 0; + +error: + __v3d_timestamp_query_info_free(qinfo, i); + return err; } static int -- 2.44.0

8 months, 3 weeks

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[PATCH 01/12] drm/v3d: Prevent out of bounds access in performance query extensions

by Tvrtko Ursulin

From: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> Check that the number of perfmons userspace is passing in the copy and reset extensions is not greater than the internal kernel storage where the ids will be copied into. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> Fixes: bae7cb5d6800 ("drm/v3d: Create a CPU job extension for the reset performance query job" Cc: Maíra Canal <mcanal(a)igalia.com> Cc: Iago Toral Quiroga <itoral(a)igalia.com> Cc: <stable(a)vger.kernel.org> # v6.8+ --- drivers/gpu/drm/v3d/v3d_submit.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c index 88f63d526b22..263fefc1d04f 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -637,6 +637,9 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, if (copy_from_user(&reset, ext, sizeof(reset))) return -EFAULT; + if (reset.nperfmons > V3D_MAX_PERFMONS) + return -EINVAL; + job->job_type = V3D_CPU_JOB_TYPE_RESET_PERFORMANCE_QUERY; job->performance_query.queries = kvmalloc_array(reset.count, @@ -708,6 +711,9 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, if (copy.pad) return -EINVAL; + if (copy.nperfmons > V3D_MAX_PERFMONS) + return -EINVAL; + job->job_type = V3D_CPU_JOB_TYPE_COPY_PERFORMANCE_QUERY; job->performance_query.queries = kvmalloc_array(copy.count, -- 2.44.0

8 months, 3 weeks

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[PATCH AUTOSEL 5.15 01/17] Input: elantech - fix touchpad state on resume for Lenovo N24

by Sasha Levin

From: Jonathan Denose <jdenose(a)google.com> [ Upstream commit a69ce592cbe0417664bc5a075205aa75c2ec1273 ] The Lenovo N24 on resume becomes stuck in a state where it sends incorrect packets, causing elantech_packet_check_v4 to fail. The only way for the device to resume sending the correct packets is for it to be disabled and then re-enabled. This change adds a dmi check to trigger this behavior on resume. Signed-off-by: Jonathan Denose <jdenose(a)google.com> Link: https://lore.kernel.org/r/20240503155020.v2.1.Ifa0e25ebf968d8f307f58d678036… Signed-off-by: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/input/mouse/elantech.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 4e38229404b4b..b4723ea395eb9 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1476,16 +1476,47 @@ static void elantech_disconnect(struct psmouse *psmouse) psmouse->private = NULL; } +/* + * Some hw_version 4 models fail to properly activate absolute mode on + * resume without going through disable/enable cycle. + */ +static const struct dmi_system_id elantech_needs_reenable[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Lenovo N24 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "81AF"), + }, + }, +#endif + { } +}; + /* * Put the touchpad back into absolute mode when reconnecting */ static int elantech_reconnect(struct psmouse *psmouse) { + int err; + psmouse_reset(psmouse); if (elantech_detect(psmouse, 0)) return -1; + if (dmi_check_system(elantech_needs_reenable)) { + err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE); + if (err) + psmouse_warn(psmouse, "failed to deactivate mouse on %s: %d\n", + psmouse->ps2dev.serio->phys, err); + + err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); + if (err) + psmouse_warn(psmouse, "failed to reactivate mouse on %s: %d\n", + psmouse->ps2dev.serio->phys, err); + } + if (elantech_set_absolute_mode(psmouse)) { psmouse_err(psmouse, "failed to put touchpad back into absolute mode.\n"); -- 2.43.0

8 months, 3 weeks

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[PATCH AUTOSEL 6.1 01/27] Input: elantech - fix touchpad state on resume for Lenovo N24

by Sasha Levin

From: Jonathan Denose <jdenose(a)google.com> [ Upstream commit a69ce592cbe0417664bc5a075205aa75c2ec1273 ] The Lenovo N24 on resume becomes stuck in a state where it sends incorrect packets, causing elantech_packet_check_v4 to fail. The only way for the device to resume sending the correct packets is for it to be disabled and then re-enabled. This change adds a dmi check to trigger this behavior on resume. Signed-off-by: Jonathan Denose <jdenose(a)google.com> Link: https://lore.kernel.org/r/20240503155020.v2.1.Ifa0e25ebf968d8f307f58d678036… Signed-off-by: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/input/mouse/elantech.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 4e38229404b4b..b4723ea395eb9 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1476,16 +1476,47 @@ static void elantech_disconnect(struct psmouse *psmouse) psmouse->private = NULL; } +/* + * Some hw_version 4 models fail to properly activate absolute mode on + * resume without going through disable/enable cycle. + */ +static const struct dmi_system_id elantech_needs_reenable[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Lenovo N24 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "81AF"), + }, + }, +#endif + { } +}; + /* * Put the touchpad back into absolute mode when reconnecting */ static int elantech_reconnect(struct psmouse *psmouse) { + int err; + psmouse_reset(psmouse); if (elantech_detect(psmouse, 0)) return -1; + if (dmi_check_system(elantech_needs_reenable)) { + err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE); + if (err) + psmouse_warn(psmouse, "failed to deactivate mouse on %s: %d\n", + psmouse->ps2dev.serio->phys, err); + + err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); + if (err) + psmouse_warn(psmouse, "failed to reactivate mouse on %s: %d\n", + psmouse->ps2dev.serio->phys, err); + } + if (elantech_set_absolute_mode(psmouse)) { psmouse_err(psmouse, "failed to put touchpad back into absolute mode.\n"); -- 2.43.0

8 months, 3 weeks

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[PATCH AUTOSEL 6.6 01/33] Input: elantech - fix touchpad state on resume for Lenovo N24

by Sasha Levin

From: Jonathan Denose <jdenose(a)google.com> [ Upstream commit a69ce592cbe0417664bc5a075205aa75c2ec1273 ] The Lenovo N24 on resume becomes stuck in a state where it sends incorrect packets, causing elantech_packet_check_v4 to fail. The only way for the device to resume sending the correct packets is for it to be disabled and then re-enabled. This change adds a dmi check to trigger this behavior on resume. Signed-off-by: Jonathan Denose <jdenose(a)google.com> Link: https://lore.kernel.org/r/20240503155020.v2.1.Ifa0e25ebf968d8f307f58d678036… Signed-off-by: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/input/mouse/elantech.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 4e38229404b4b..b4723ea395eb9 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1476,16 +1476,47 @@ static void elantech_disconnect(struct psmouse *psmouse) psmouse->private = NULL; } +/* + * Some hw_version 4 models fail to properly activate absolute mode on + * resume without going through disable/enable cycle. + */ +static const struct dmi_system_id elantech_needs_reenable[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Lenovo N24 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "81AF"), + }, + }, +#endif + { } +}; + /* * Put the touchpad back into absolute mode when reconnecting */ static int elantech_reconnect(struct psmouse *psmouse) { + int err; + psmouse_reset(psmouse); if (elantech_detect(psmouse, 0)) return -1; + if (dmi_check_system(elantech_needs_reenable)) { + err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE); + if (err) + psmouse_warn(psmouse, "failed to deactivate mouse on %s: %d\n", + psmouse->ps2dev.serio->phys, err); + + err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); + if (err) + psmouse_warn(psmouse, "failed to reactivate mouse on %s: %d\n", + psmouse->ps2dev.serio->phys, err); + } + if (elantech_set_absolute_mode(psmouse)) { psmouse_err(psmouse, "failed to put touchpad back into absolute mode.\n"); -- 2.43.0

8 months, 3 weeks

1
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Re: [PATCH 6.9 000/197] 6.9.9-rc1 review

by Ronald Warsow

Hi Greg no regressions here on x86_64 (RKL, Intel 11th Gen. CPU) Thanks Tested-by: Ronald Warsow <rwarsow(a)gmx.de>

8 months, 3 weeks

1
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[PATCH v2] drm/amd/display: Add otg_master NULL check within init_pipe_slice_table_from_context

by Ma Ke

To avoid reports of NULL_RETURN warning, we should add otg_master NULL check. Cc: stable(a)vger.kernel.org Fixes: c51d87202d1f ("drm/amd/display: do not attempt ODM power optimization if minimal transition doesn't exist") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- Changes in v2: - added the recipient's email address, due to the prolonged absence of a response from the recipient. - added Cc stable. --- drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c index f6fe0a64beac..8972598ca77f 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c @@ -1177,6 +1177,9 @@ static void init_pipe_slice_table_from_context( stream = context->streams[i]; otg_master = resource_get_otg_master_for_stream( &context->res_ctx, stream); + if (!otg_master) + continue; + count = resource_get_odm_slice_count(otg_master); update_slice_table_for_stream(table, stream, count); -- 2.25.1

8 months, 3 weeks

2
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[PATCH] EDAC/altera: Fix possible null pointer dereference

by Ma Ke

In altr_s10_sdram_check_ecc_deps(), of_get_address() may return NULL which is later dereferenced. Fix this bug by adding NULL check. Cc: stable(a)vger.kernel.org Fixes: e1bca853dddc ("EDAC/altera: Add SDRAM ECC check for U-Boot") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- drivers/edac/altera_edac.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c index fe89f5c4837f..d6bf0eebeb41 100644 --- a/drivers/edac/altera_edac.c +++ b/drivers/edac/altera_edac.c @@ -1086,6 +1086,7 @@ static int altr_s10_sdram_check_ecc_deps(struct altr_edac_device_dev *device) struct arm_smccc_res result; struct device_node *np; phys_addr_t sdram_addr; + const __be32 *sdram_addrp; u32 read_reg; int ret; @@ -1093,8 +1094,14 @@ static int altr_s10_sdram_check_ecc_deps(struct altr_edac_device_dev *device) if (!np) goto sdram_err; - sdram_addr = of_translate_address(np, of_get_address(np, 0, - NULL, NULL)); + sdram_addrp = of_get_address(np, 0, NULL, NULL); + if (!sdram_addrp) + return -EINVAL; + + sdram_addr = of_translate_address(np, sdram_addrp); + if (!sdram_addr) + return -EINVAL; + of_node_put(np); sdram_ecc_addr = (unsigned long)sdram_addr + prv->ecc_en_ofst; arm_smccc_smc(INTEL_SIP_SMC_REG_READ, sdram_ecc_addr, -- 2.25.1

8 months, 3 weeks

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[PATCH] wifi: ath12k: fix soft lockup on suspend

by Johan Hovold

The ext interrupts are enabled when the firmware has been started, but this may never happen, for example, if the board configuration file is missing. When the system is later suspended, the driver unconditionally tries to disable interrupts, which results in an irq disable imbalance and causes the driver to spin indefinitely in napi_synchronize(). Make sure that the interrupts have been enabled before attempting to disable them. Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Cc: stable(a)vger.kernel.org # 6.3 Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> --- drivers/net/wireless/ath/ath12k/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c index 16af046c33d9..55fde0d33183 100644 --- a/drivers/net/wireless/ath/ath12k/pci.c +++ b/drivers/net/wireless/ath/ath12k/pci.c @@ -472,7 +472,8 @@ static void __ath12k_pci_ext_irq_disable(struct ath12k_base *ab) { int i; - clear_bit(ATH12K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags); + if (!test_and_clear_bit(ATH12K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags)) + return; for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) { struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i]; -- 2.44.1

8 months, 3 weeks

2
1
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Linux-stable-mirror July 2024