July 2024 - Linux-stable-mirror

[PATCH 04/11] drm/v3d: Validate passed in drm syncobj handles in the timestamp extension

by Tvrtko Ursulin

From: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> If userspace provides an unknown or invalid handle anywhere in the handle array the rest of the driver will not handle that well. Fix it by checking handle was looked up successfully or otherwise fail the extension by jumping into the existing unwind. 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+ Reviewed-by: Maíra Canal <mcanal(a)igalia.com> --- drivers/gpu/drm/v3d/v3d_submit.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c index 50be4e8a7512..9a3e32075ebe 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -498,6 +498,10 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->timestamp_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->timestamp_query.count = timestamp.count; @@ -552,6 +556,10 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->timestamp_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->timestamp_query.count = reset.count; @@ -616,6 +624,10 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->timestamp_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->timestamp_query.count = copy.count; -- 2.44.0

9 months, 2 weeks

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[PATCH 03/11] 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 | 52 ++++++++++++++++++++------------ 3 files changed, 50 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index e208ffdfba32..dd3ead4cb8bd 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 *query_info, unsigned int count); +void v3d_performance_query_info_free(struct v3d_performance_query_info *query_info, + 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 59dc0287dab9..5fbbee47c6b7 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 *query_info, } } +void +v3d_performance_query_info_free(struct v3d_performance_query_info *query_info, + unsigned int count) +{ + if (query_info->queries) { + unsigned int i; + + for (i = 0; i < count; i++) + drm_syncobj_put(query_info->queries[i].syncobj); + + kvfree(query_info->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 121bf1314b80..50be4e8a7512 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -640,6 +640,8 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, u32 __user *syncs; u64 __user *kperfmon_ids; struct drm_v3d_reset_performance_query reset; + unsigned int i, j; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -668,39 +670,43 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, syncs = u64_to_user_ptr(reset.syncs); kperfmon_ids = u64_to_user_ptr(reset.kperfmon_ids); - for (int i = 0; i < reset.count; i++) { + for (i = 0; i < reset.count; i++) { u32 sync; u64 ids; u32 __user *ids_pointer; u32 id; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } - job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); - if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } ids_pointer = u64_to_user_ptr(ids); - for (int j = 0; j < reset.nperfmons; j++) { + for (j = 0; j < reset.nperfmons; j++) { if (copy_from_user(&id, ids_pointer++, sizeof(id))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->performance_query.queries[i].kperfmon_ids[j] = id; } + + job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); } job->performance_query.count = reset.count; job->performance_query.nperfmons = reset.nperfmons; return 0; + +error: + v3d_performance_query_info_free(&job->performance_query, i); + return err; } static int @@ -711,6 +717,8 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, u32 __user *syncs; u64 __user *kperfmon_ids; struct drm_v3d_copy_performance_query copy; + unsigned int i, j; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -742,34 +750,34 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, syncs = u64_to_user_ptr(copy.syncs); kperfmon_ids = u64_to_user_ptr(copy.kperfmon_ids); - for (int i = 0; i < copy.count; i++) { + for (i = 0; i < copy.count; i++) { u32 sync; u64 ids; u32 __user *ids_pointer; u32 id; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } - job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); - if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } ids_pointer = u64_to_user_ptr(ids); - for (int j = 0; j < copy.nperfmons; j++) { + for (j = 0; j < copy.nperfmons; j++) { if (copy_from_user(&id, ids_pointer++, sizeof(id))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->performance_query.queries[i].kperfmon_ids[j] = id; } + + job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); } job->performance_query.count = copy.count; job->performance_query.nperfmons = copy.nperfmons; @@ -782,6 +790,10 @@ 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(&job->performance_query, i); + return err; } /* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data -- 2.44.0

9 months, 2 weeks

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[PATCH 02/11] 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+ Reviewed-by: Maíra Canal <mcanal(a)igalia.com> --- drivers/gpu/drm/v3d/v3d_drv.h | 2 ++ drivers/gpu/drm/v3d/v3d_sched.c | 22 +++++++++++----- drivers/gpu/drm/v3d/v3d_submit.c | 43 ++++++++++++++++++++++---------- 3 files changed, 48 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 099b962bdfde..e208ffdfba32 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 *query_info, + 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..59dc0287dab9 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 *query_info, + unsigned int count) +{ + if (query_info->queries) { + unsigned int i; + + for (i = 0; i < count; i++) + drm_syncobj_put(query_info->queries[i].syncobj); + + kvfree(query_info->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 263fefc1d04f..121bf1314b80 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -452,6 +452,8 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, { u32 __user *offsets, *syncs; struct drm_v3d_timestamp_query timestamp; + unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -480,19 +482,19 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, offsets = u64_to_user_ptr(timestamp.offsets); syncs = u64_to_user_ptr(timestamp.syncs); - for (int i = 0; i < timestamp.count; i++) { + for (i = 0; i < timestamp.count; i++) { u32 offset, sync; if (copy_from_user(&offset, offsets++, sizeof(offset))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].offset = offset; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -500,6 +502,10 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, job->timestamp_query.count = timestamp.count; return 0; + +error: + v3d_timestamp_query_info_free(&job->timestamp_query, i); + return err; } static int @@ -509,6 +515,8 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, { u32 __user *syncs; struct drm_v3d_reset_timestamp_query reset; + unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -533,14 +541,14 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, syncs = u64_to_user_ptr(reset.syncs); - for (int i = 0; i < reset.count; i++) { + for (i = 0; i < reset.count; i++) { u32 sync; job->timestamp_query.queries[i].offset = reset.offset + 8 * i; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -548,6 +556,10 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, job->timestamp_query.count = reset.count; return 0; + +error: + v3d_timestamp_query_info_free(&job->timestamp_query, i); + return err; } /* Get data for the copy timestamp query results job submission. */ @@ -558,7 +570,8 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, { u32 __user *offsets, *syncs; struct drm_v3d_copy_timestamp_query copy; - int i; + unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -591,15 +604,15 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, u32 offset, sync; if (copy_from_user(&offset, offsets++, sizeof(offset))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].offset = offset; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -613,6 +626,10 @@ 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(&job->timestamp_query, i); + return err; } static int -- 2.44.0

9 months, 2 weeks

1
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[PATCH 01/11] 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+ Reviewed-by: Iago Toral Quiroga <itoral(a)igalia.com> Reviewed-by: Maíra Canal <mcanal(a)igalia.com> --- 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

9 months, 2 weeks

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[PATCH 05/11] drm/v3d: Validate passed in drm syncobj handles in the performance extension

by Tvrtko Ursulin

From: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> If userspace provides an unknown or invalid handle anywhere in the handle array the rest of the driver will not handle that well. Fix it by checking handle was looked up successfuly or otherwise fail the extension by jumping into the existing unwind. 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 | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c index e3a00c8394a5..3838ebade45d 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -710,6 +710,10 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, } job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->performance_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->performance_query.count = reset.count; job->performance_query.nperfmons = reset.nperfmons; @@ -790,6 +794,10 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, } job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->performance_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->performance_query.count = copy.count; job->performance_query.nperfmons = copy.nperfmons; -- 2.44.0

9 months, 2 weeks

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[PATCH 04/11] drm/v3d: Validate passed in drm syncobj handles in the timestamp extension

by Tvrtko Ursulin

From: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> If userspace provides an unknown or invalid handle anywhere in the handle array the rest of the driver will not handle that well. Fix it by checking handle was looked up successfully or otherwise fail the extension by jumping into the existing unwind. 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_submit.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c index d626c8539b04..e3a00c8394a5 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -498,6 +498,10 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->timestamp_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->timestamp_query.count = timestamp.count; @@ -552,6 +556,10 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->timestamp_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->timestamp_query.count = reset.count; @@ -616,6 +624,10 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); + if (!job->timestamp_query.queries[i].syncobj) { + err = -ENOENT; + goto error; + } } job->timestamp_query.count = copy.count; -- 2.44.0

9 months, 2 weeks

2
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[PATCH 03/11] 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 | 50 ++++++++++++++++++++------------ 3 files changed, 49 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index e208ffdfba32..dd3ead4cb8bd 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 *query_info, unsigned int count); +void v3d_performance_query_info_free(struct v3d_performance_query_info *query_info, + 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 59dc0287dab9..5fbbee47c6b7 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 *query_info, } } +void +v3d_performance_query_info_free(struct v3d_performance_query_info *query_info, + unsigned int count) +{ + if (query_info->queries) { + unsigned int i; + + for (i = 0; i < count; i++) + drm_syncobj_put(query_info->queries[i].syncobj); + + kvfree(query_info->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 121bf1314b80..d626c8539b04 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -640,6 +640,8 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, u32 __user *syncs; u64 __user *kperfmon_ids; struct drm_v3d_reset_performance_query reset; + unsigned int i, j; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -668,39 +670,43 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, syncs = u64_to_user_ptr(reset.syncs); kperfmon_ids = u64_to_user_ptr(reset.kperfmon_ids); - for (int i = 0; i < reset.count; i++) { + for (i = 0; i < reset.count; i++) { u32 sync; u64 ids; u32 __user *ids_pointer; u32 id; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } - job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); - if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } ids_pointer = u64_to_user_ptr(ids); - for (int j = 0; j < reset.nperfmons; j++) { + for (j = 0; j < reset.nperfmons; j++) { if (copy_from_user(&id, ids_pointer++, sizeof(id))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->performance_query.queries[i].kperfmon_ids[j] = id; } + + job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); } job->performance_query.count = reset.count; job->performance_query.nperfmons = reset.nperfmons; return 0; + +error: + v3d_performance_query_info_free(&job->performance_query, i); + return err; } static int @@ -711,6 +717,8 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, u32 __user *syncs; u64 __user *kperfmon_ids; struct drm_v3d_copy_performance_query copy; + unsigned int i, j; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -749,27 +757,27 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, u32 id; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } - job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); - if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } ids_pointer = u64_to_user_ptr(ids); - for (int j = 0; j < copy.nperfmons; j++) { + for (j = 0; j < copy.nperfmons; j++) { if (copy_from_user(&id, ids_pointer++, sizeof(id))) { - kvfree(job->performance_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->performance_query.queries[i].kperfmon_ids[j] = id; } + + job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); } job->performance_query.count = copy.count; job->performance_query.nperfmons = copy.nperfmons; @@ -782,6 +790,10 @@ 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(&job->performance_query, i); + return err; } /* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data -- 2.44.0

9 months, 2 weeks

3
2
0 0

[PATCH 02/11] 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 | 43 ++++++++++++++++++++++---------- 3 files changed, 48 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 099b962bdfde..e208ffdfba32 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 *query_info, + 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..59dc0287dab9 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 *query_info, + unsigned int count) +{ + if (query_info->queries) { + unsigned int i; + + for (i = 0; i < count; i++) + drm_syncobj_put(query_info->queries[i].syncobj); + + kvfree(query_info->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 263fefc1d04f..121bf1314b80 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -452,6 +452,8 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, { u32 __user *offsets, *syncs; struct drm_v3d_timestamp_query timestamp; + unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -480,19 +482,19 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, offsets = u64_to_user_ptr(timestamp.offsets); syncs = u64_to_user_ptr(timestamp.syncs); - for (int i = 0; i < timestamp.count; i++) { + for (i = 0; i < timestamp.count; i++) { u32 offset, sync; if (copy_from_user(&offset, offsets++, sizeof(offset))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].offset = offset; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -500,6 +502,10 @@ v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv, job->timestamp_query.count = timestamp.count; return 0; + +error: + v3d_timestamp_query_info_free(&job->timestamp_query, i); + return err; } static int @@ -509,6 +515,8 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, { u32 __user *syncs; struct drm_v3d_reset_timestamp_query reset; + unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -533,14 +541,14 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, syncs = u64_to_user_ptr(reset.syncs); - for (int i = 0; i < reset.count; i++) { + for (i = 0; i < reset.count; i++) { u32 sync; job->timestamp_query.queries[i].offset = reset.offset + 8 * i; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -548,6 +556,10 @@ v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv, job->timestamp_query.count = reset.count; return 0; + +error: + v3d_timestamp_query_info_free(&job->timestamp_query, i); + return err; } /* Get data for the copy timestamp query results job submission. */ @@ -558,7 +570,8 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, { u32 __user *offsets, *syncs; struct drm_v3d_copy_timestamp_query copy; - int i; + unsigned int i; + int err; if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -591,15 +604,15 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv, u32 offset, sync; if (copy_from_user(&offset, offsets++, sizeof(offset))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].offset = offset; if (copy_from_user(&sync, syncs++, sizeof(sync))) { - kvfree(job->timestamp_query.queries); - return -EFAULT; + err = -EFAULT; + goto error; } job->timestamp_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync); @@ -613,6 +626,10 @@ 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(&job->timestamp_query, i); + return err; } static int -- 2.44.0

9 months, 2 weeks

2
1
0 0

[PATCH 0/2] media: ov5675: Fixup ov5675 reset failures

by Bryan O'Donoghue

One long running saga for me on the Lenovo X13s is the occasional failure to either probe or subsequently bring-up the ov5675 main RGB sensor on the laptop. Initially I suspected the PMIC for this part as the PMIC is using a new interface on an I2C bus instead of an SPMI bus. In particular I thought perhaps the I2C write to PMIC had completed but the regulator output hadn't become stable from the perspective of the SoC. This however doesn't appear to be the case - I can introduce a delay of milliseconds on the PMIC path without resolving the sensor reset problem. Secondly I thought about reset pin polarity or drive-strength but, again playing about with both didn't yield decent results. I also played with the duration of reset to no avail. The error manifested as an I2C write timeout to the sensor which indicated that the chip likely hadn't come out reset. An intermittent fault appearing in perhaps 1/10 or 1/20 reset cycles. Looking at the expression of the reset we see that there is a minimum time expressed in XVCLK cycles between reset completion and first I2C transaction to the sensor. The specification calls out the minimum delay @ 8192 XVCLK cycles and the ov5675 driver meets that timing almost exactly. A little too exactly - testing finally showed that we were too racy with respect to the minimum quiescence between reset completion and first command to the chip. Fixing this error I choose to base the fix again on the number of clocks but to also support any clock rate the chip could support by moving away from a define to reading and using the XVCLK. True enough only 19.2 MHz is currently supported but for the hypothetical case where some other frequency is supported in the future, I wanted the fix introduced in this series to still hold. Hence this series: 1. Allows for any clock rate to be used in the valid range for the reset. 2. Elongates the post-reset period based on clock cycles which can now vary. Patch #2 can still be backported to stable irrespective of patch #1. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue(a)linaro.org> --- Bryan O'Donoghue (2): media: ov5675: Derive delay cycles from the clock rate reported media: ov5675: Elongate reset to first transaction minimum gap drivers/media/i2c/ov5675.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) --- base-commit: 523b23f0bee3014a7a752c9bb9f5c54f0eddae88 change-id: 20240710-linux-next-ov5675-60b0e83c73f1 Best regards, -- Bryan O'Donoghue <bryan.odonoghue(a)linaro.org>

9 months, 2 weeks

3
10
0 0

[PATCH AUTOSEL 4.19 1/7] 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 6759cab82a723..6f747c59cd652 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1527,16 +1527,47 @@ 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

9 months, 2 weeks

2
7
0 0

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