diff options
| author | Matthew Auld <matthew.auld@intel.com> | 2024-08-21 20:19:18 +0300 |
|---|---|---|
| committer | Matthew Brost <matthew.brost@intel.com> | 2024-08-22 05:38:24 +0300 |
| commit | 321d6b4b9cbe3dd0bc99937d5e5b4d730b5b5798 (patch) | |
| tree | cf87d5ea26fae54917d2301f95fa9e20f2d76c62 | |
| parent | 40520283e0fd11237ed9dfc0991503b3403d5fa4 (diff) | |
| download | linux-321d6b4b9cbe3dd0bc99937d5e5b4d730b5b5798.tar.xz | |
drm/xe: fixup xe_alloc_pf_queue
kzalloc expects number of bytes, therefore we should convert the number
of dw into bytes, otherwise we are likely just accessing beyond the
array causing all kinds of carnage. Also fixup the error handling while
we are here.
v2:
- Prefer kcalloc (dim)
Fixes: 3338e4f90c14 ("drm/xe: Use topology to determine page fault queue size")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Stuart Summers <stuart.summers@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240821171917.417386-2-matthew.auld@intel.com
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_pagefault.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_pagefault.c b/drivers/gpu/drm/xe/xe_gt_pagefault.c index 401c0527d914..0be4687bfc20 100644 --- a/drivers/gpu/drm/xe/xe_gt_pagefault.c +++ b/drivers/gpu/drm/xe/xe_gt_pagefault.c @@ -417,7 +417,10 @@ static int xe_alloc_pf_queue(struct xe_gt *gt, struct pf_queue *pf_queue) (num_eus + XE_NUM_HW_ENGINES) * PF_MSG_LEN_DW; pf_queue->gt = gt; - pf_queue->data = kzalloc(pf_queue->num_dw, GFP_KERNEL); + pf_queue->data = kcalloc(pf_queue->num_dw, sizeof(u32), GFP_KERNEL); + if (!pf_queue->data) + return -ENOMEM; + spin_lock_init(&pf_queue->lock); INIT_WORK(&pf_queue->worker, pf_queue_work_func); |