<html><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <div class="moz-cite-prefix">On 2023-10-18 21:56, Jesse Zhang wrote: </div> <blockquote type="cite" cite="mid:20231019015609.299859-1-jesse.zhang@amd.com"> <pre class="moz-quote-pre" wrap="">[ 567.613292] shift exponent 255 is too large for 64-bit type 'long unsigned int' [ 567.614498] CPU: 5 PID: 238 Comm: kworker/5:1 Tainted: G OE 6.2.0-34-generic #34~22.04.1-Ubuntu [ 567.614502] Hardware name: AMD Splinter/Splinter-RPL, BIOS WS43927N_871 09/25/2023 [ 567.614504] Workqueue: events send_exception_work_handler [amdgpu] [ 567.614748] Call Trace: [ 567.614750] <TASK> [ 567.614753] dump_stack_lvl+0x48/0x70 [ 567.614761] dump_stack+0x10/0x20 [ 567.614763] __ubsan_handle_shift_out_of_bounds+0x156/0x310 [ 567.614769] ? srso_alias_return_thunk+0x5/0x7f [ 567.614773] ? update_sd_lb_stats.constprop.0+0xf2/0x3c0 [ 567.614780] svm_range_split_by_granularity.cold+0x2b/0x34 [amdgpu] [ 567.615047] ? srso_alias_return_thunk+0x5/0x7f [ 567.615052] svm_migrate_to_ram+0x185/0x4d0 [amdgpu] [ 567.615286] do_swap_page+0x7b6/0xa30 [ 567.615291] ? srso_alias_return_thunk+0x5/0x7f [ 567.615294] ? __free_pages+0x119/0x130 [ 567.615299] handle_pte_fault+0x227/0x280 [ 567.615303] __handle_mm_fault+0x3c0/0x720 [ 567.615311] handle_mm_fault+0x119/0x330 [ 567.615314] ? lock_mm_and_find_vma+0x44/0x250 [ 567.615318] do_user_addr_fault+0x1a9/0x640 [ 567.615323] exc_page_fault+0x81/0x1b0 [ 567.615328] asm_exc_page_fault+0x27/0x30 [ 567.615332] RIP: 0010:__get_user_8+0x1c/0x30 Suggested-by: Philip Yang <a class="moz-txt-link-rfc2396E" href="mailto:Philip.Yang@amd.com"><Philip.Yang@amd.com></a> Signed-off-by: Jesse Zhang <a class="moz-txt-link-rfc2396E" href="mailto:Jesse.Zhang@amd.com"><Jesse.Zhang@amd.com></a> --- drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 62 +--------------------------- drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 3 -- 2 files changed, 1 insertion(+), 64 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index 54af7a2b29f8..ccaf86a4c02a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -781,7 +781,7 @@ svm_range_apply_attrs(struct kfd_process *p, struct svm_range *prange, prange->flags &= ~attrs[i].value; break; case KFD_IOCTL_SVM_ATTR_GRANULARITY: - prange->granularity = attrs[i].value; + prange->granularity = attrs[i].value & 0x3F;</pre> </blockquote> Thinks again, this should be prange->granularity = min_t(uint32_t, attrs[i].value, 0x3F); Please separate to another patch to remove svm_range_split_by_granularity. Regards, Philip <blockquote type="cite" cite="mid:20231019015609.299859-1-jesse.zhang@amd.com"> <pre class="moz-quote-pre" wrap=""> break; default: WARN_ONCE(1, "svm_range_check_attrs wasn't called?"); @@ -1139,66 +1139,6 @@ svm_range_add_child(struct svm_range *prange, struct mm_struct *mm, list_add_tail(&pchild->child_list, &prange->child_list); } -/** - * svm_range_split_by_granularity - collect ranges within granularity boundary - * - * @p: the process with svms list - * @mm: mm structure - * @addr: the vm fault address in pages, to split the prange - * @parent: parent range if prange is from child list - * @prange: prange to split - * - * Trims @prange to be a single aligned block of prange->granularity if - * possible. The head and tail are added to the child_list in @parent. - * - * Context: caller must hold mmap_read_lock and prange->lock - * - * Return: - * 0 - OK, otherwise error code - */ -int -svm_range_split_by_granularity(struct kfd_process *p, struct mm_struct *mm, - unsigned long addr, struct svm_range *parent, - struct svm_range *prange) -{ - struct svm_range *head, *tail; - unsigned long start, last, size; - int r; - - /* Align splited range start and size to granularity size, then a single - * PTE will be used for whole range, this reduces the number of PTE - * updated and the L1 TLB space used for translation. - */ - size = 1UL << prange->granularity; - start = ALIGN_DOWN(addr, size); - last = ALIGN(addr + 1, size) - 1; - - pr_debug("svms 0x%p split [0x%lx 0x%lx] to [0x%lx 0x%lx] size 0x%lx\n", - prange->svms, prange->start, prange->last, start, last, size); - - if (start > prange->start) { - r = svm_range_split(prange, start, prange->last, &head); - if (r) - return r; - svm_range_add_child(parent, mm, head, SVM_OP_ADD_RANGE); - } - - if (last < prange->last) { - r = svm_range_split(prange, prange->start, last, &tail); - if (r) - return r; - svm_range_add_child(parent, mm, tail, SVM_OP_ADD_RANGE); - } - - /* xnack on, update mapping on GPUs with ACCESS_IN_PLACE */ - if (p->xnack_enabled && prange->work_item.op == SVM_OP_ADD_RANGE) { - prange->work_item.op = SVM_OP_ADD_RANGE_AND_MAP; - pr_debug("change prange 0x%p [0x%lx 0x%lx] op %d\n", - prange, prange->start, prange->last, - SVM_OP_ADD_RANGE_AND_MAP); - } - return 0; -} static bool svm_nodes_in_same_hive(struct kfd_node *node_a, struct kfd_node *node_b) { diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h index be11ba0c4289..026863a0abcd 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h @@ -172,9 +172,6 @@ struct kfd_node *svm_range_get_node_by_id(struct svm_range *prange, int svm_range_vram_node_new(struct kfd_node *node, struct svm_range *prange, bool clear); void svm_range_vram_node_free(struct svm_range *prange); -int svm_range_split_by_granularity(struct kfd_process *p, struct mm_struct *mm, - unsigned long addr, struct svm_range *parent, - struct svm_range *prange); int svm_range_restore_pages(struct amdgpu_device *adev, unsigned int pasid, uint32_t vmid, uint32_t node_id, uint64_t addr, bool write_fault); </pre> </blockquote> </body> </html>