drivers/soc/qcom/smem.c:702:27: sparse: sparse: cast to restricted __le32
From: kernel test robot
Date: Thu Aug 04 2022 - 20:22:06 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c040862bfbd9c5f3cb64e1df1c623e20e38fe656
commit: f1383348ad0fe0d568dfd37f2552b0b4f044dbe5 soc: qcom: smem: validate fields of shared structures
date: 4 months ago
config: sh-randconfig-s041-20220804 (https://download.01.org/0day-ci/archive/20220805/202208050850.XNdMMV1C-lkp@xxxxxxxxx/config)
compiler: sh4-linux-gcc (GCC) 12.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f1383348ad0fe0d568dfd37f2552b0b4f044dbe5
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout f1383348ad0fe0d568dfd37f2552b0b4f044dbe5
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sh SHELL=/bin/bash drivers/soc/qcom/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
sparse warnings: (new ones prefixed by >>)
drivers/soc/qcom/smem.c:430:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_header *header @@ got void [noderef] __iomem *virt_base @@
drivers/soc/qcom/smem.c:430:16: sparse: expected struct smem_header *header
drivers/soc/qcom/smem.c:430:16: sparse: got void [noderef] __iomem *virt_base
drivers/soc/qcom/smem.c:517:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_header *header @@ got void [noderef] __iomem *virt_base @@
drivers/soc/qcom/smem.c:517:16: sparse: expected struct smem_header *header
drivers/soc/qcom/smem.c:517:16: sparse: got void [noderef] __iomem *virt_base
drivers/soc/qcom/smem.c:537:50: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@
drivers/soc/qcom/smem.c:537:50: sparse: expected void *
drivers/soc/qcom/smem.c:537:50: sparse: got void [noderef] __iomem *
drivers/soc/qcom/smem.c:698:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_partition_header *phdr @@ got void [noderef] __iomem *virt_base @@
drivers/soc/qcom/smem.c:698:22: sparse: expected struct smem_partition_header *phdr
drivers/soc/qcom/smem.c:698:22: sparse: got void [noderef] __iomem *virt_base
>> drivers/soc/qcom/smem.c:702:27: sparse: sparse: cast to restricted __le32
>> drivers/soc/qcom/smem.c:702:27: sparse: sparse: cast to restricted __le32
>> drivers/soc/qcom/smem.c:702:27: sparse: sparse: cast to restricted __le32
>> drivers/soc/qcom/smem.c:702:27: sparse: sparse: cast to restricted __le32
>> drivers/soc/qcom/smem.c:702:27: sparse: sparse: cast to restricted __le32
>> drivers/soc/qcom/smem.c:702:27: sparse: sparse: cast to restricted __le32
drivers/soc/qcom/smem.c:706:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_partition_header *phdr @@ got void [noderef] __iomem *virt_base @@
drivers/soc/qcom/smem.c:706:22: sparse: expected struct smem_partition_header *phdr
drivers/soc/qcom/smem.c:706:22: sparse: got void [noderef] __iomem *virt_base
drivers/soc/qcom/smem.c:710:27: sparse: sparse: cast to restricted __le32
drivers/soc/qcom/smem.c:710:27: sparse: sparse: cast to restricted __le32
drivers/soc/qcom/smem.c:710:27: sparse: sparse: cast to restricted __le32
drivers/soc/qcom/smem.c:710:27: sparse: sparse: cast to restricted __le32
drivers/soc/qcom/smem.c:710:27: sparse: sparse: cast to restricted __le32
drivers/soc/qcom/smem.c:710:27: sparse: sparse: cast to restricted __le32
drivers/soc/qcom/smem.c:713:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_header *header @@ got void [noderef] __iomem *virt_base @@
drivers/soc/qcom/smem.c:713:24: sparse: expected struct smem_header *header
drivers/soc/qcom/smem.c:713:24: sparse: got void [noderef] __iomem *virt_base
drivers/soc/qcom/smem.c:726:30: sparse: sparse: incompatible types in comparison expression (different address spaces):
drivers/soc/qcom/smem.c:726:30: sparse: void *
drivers/soc/qcom/smem.c:726:30: sparse: void [noderef] __iomem *
drivers/soc/qcom/smem.c:747:36: sparse: sparse: subtraction of different types can't work (different address spaces)
drivers/soc/qcom/smem.c:756:28: sparse: sparse: subtraction of different types can't work (different address spaces)
drivers/soc/qcom/smem.c:765:36: sparse: sparse: subtraction of different types can't work (different address spaces)
drivers/soc/qcom/smem.c:780:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_header *header @@ got void [noderef] __iomem *virt_base @@
drivers/soc/qcom/smem.c:780:16: sparse: expected struct smem_header *header
drivers/soc/qcom/smem.c:780:16: sparse: got void [noderef] __iomem *virt_base
drivers/soc/qcom/smem.c:813:57: sparse: sparse: restricted __le32 degrades to integer
drivers/soc/qcom/smem.c:834:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_partition_header *header @@ got void [noderef] __iomem * @@
drivers/soc/qcom/smem.c:834:16: sparse: expected struct smem_partition_header *header
drivers/soc/qcom/smem.c:834:16: sparse: got void [noderef] __iomem *
drivers/soc/qcom/smem.c:985:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_ptable *ptable @@ got void [noderef] __iomem * @@
drivers/soc/qcom/smem.c:985:22: sparse: expected struct smem_ptable *ptable
drivers/soc/qcom/smem.c:985:22: sparse: got void [noderef] __iomem *
drivers/soc/qcom/smem.c:1094:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct smem_header *header @@ got void [noderef] __iomem *virt_base @@
drivers/soc/qcom/smem.c:1094:16: sparse: expected struct smem_header *header
drivers/soc/qcom/smem.c:1094:16: sparse: got void [noderef] __iomem *virt_base
drivers/soc/qcom/smem.c:1115:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got restricted __le32 * @@
drivers/soc/qcom/smem.c:1115:16: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/soc/qcom/smem.c:1115:16: sparse: got restricted __le32 *
drivers/soc/qcom/smem.c:1115:52: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got restricted __le32 * @@
drivers/soc/qcom/smem.c:1115:52: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/soc/qcom/smem.c:1115:52: sparse: got restricted __le32 *
vim +702 drivers/soc/qcom/smem.c
504
505 static void *qcom_smem_get_global(struct qcom_smem *smem,
506 unsigned item,
507 size_t *size)
508 {
509 struct smem_header *header;
510 struct smem_region *region;
511 struct smem_global_entry *entry;
512 u64 entry_offset;
513 u32 e_size;
514 u32 aux_base;
515 unsigned i;
516
> 517 header = smem->regions[0].virt_base;
518 entry = &header->toc[item];
519 if (!entry->allocated)
520 return ERR_PTR(-ENXIO);
521
522 aux_base = le32_to_cpu(entry->aux_base) & AUX_BASE_MASK;
523
524 for (i = 0; i < smem->num_regions; i++) {
525 region = &smem->regions[i];
526
527 if ((u32)region->aux_base == aux_base || !aux_base) {
528 e_size = le32_to_cpu(entry->size);
529 entry_offset = le32_to_cpu(entry->offset);
530
531 if (WARN_ON(e_size + entry_offset > region->size))
532 return ERR_PTR(-EINVAL);
533
534 if (size != NULL)
535 *size = e_size;
536
537 return region->virt_base + entry_offset;
538 }
539 }
540
541 return ERR_PTR(-ENOENT);
542 }
543
544 static void *qcom_smem_get_private(struct qcom_smem *smem,
545 struct smem_partition *part,
546 unsigned item,
547 size_t *size)
548 {
549 struct smem_private_entry *e, *end;
550 struct smem_partition_header *phdr;
551 void *item_ptr, *p_end;
552 u32 padding_data;
553 u32 e_size;
554
555 phdr = (struct smem_partition_header __force *)part->virt_base;
556 p_end = (void *)phdr + part->size;
557
558 e = phdr_to_first_uncached_entry(phdr);
559 end = phdr_to_last_uncached_entry(phdr);
560
561 while (e < end) {
562 if (e->canary != SMEM_PRIVATE_CANARY)
563 goto invalid_canary;
564
565 if (le16_to_cpu(e->item) == item) {
566 if (size != NULL) {
567 e_size = le32_to_cpu(e->size);
568 padding_data = le16_to_cpu(e->padding_data);
569
570 if (WARN_ON(e_size > part->size || padding_data > e_size))
571 return ERR_PTR(-EINVAL);
572
573 *size = e_size - padding_data;
574 }
575
576 item_ptr = uncached_entry_to_item(e);
577 if (WARN_ON(item_ptr > p_end))
578 return ERR_PTR(-EINVAL);
579
580 return item_ptr;
581 }
582
583 e = uncached_entry_next(e);
584 }
585
586 if (WARN_ON((void *)e > p_end))
587 return ERR_PTR(-EINVAL);
588
589 /* Item was not found in the uncached list, search the cached list */
590
591 e = phdr_to_first_cached_entry(phdr, part->cacheline);
592 end = phdr_to_last_cached_entry(phdr);
593
594 if (WARN_ON((void *)e < (void *)phdr || (void *)end > p_end))
595 return ERR_PTR(-EINVAL);
596
597 while (e > end) {
598 if (e->canary != SMEM_PRIVATE_CANARY)
599 goto invalid_canary;
600
601 if (le16_to_cpu(e->item) == item) {
602 if (size != NULL) {
603 e_size = le32_to_cpu(e->size);
604 padding_data = le16_to_cpu(e->padding_data);
605
606 if (WARN_ON(e_size > part->size || padding_data > e_size))
607 return ERR_PTR(-EINVAL);
608
609 *size = e_size - padding_data;
610 }
611
612 item_ptr = cached_entry_to_item(e);
613 if (WARN_ON(item_ptr < (void *)phdr))
614 return ERR_PTR(-EINVAL);
615
616 return item_ptr;
617 }
618
619 e = cached_entry_next(e, part->cacheline);
620 }
621
622 if (WARN_ON((void *)e < (void *)phdr))
623 return ERR_PTR(-EINVAL);
624
625 return ERR_PTR(-ENOENT);
626
627 invalid_canary:
628 dev_err(smem->dev, "Found invalid canary in hosts %hu:%hu partition\n",
629 le16_to_cpu(phdr->host0), le16_to_cpu(phdr->host1));
630
631 return ERR_PTR(-EINVAL);
632 }
633
634 /**
635 * qcom_smem_get() - resolve ptr of size of a smem item
636 * @host: the remote processor, or -1
637 * @item: smem item handle
638 * @size: pointer to be filled out with size of the item
639 *
640 * Looks up smem item and returns pointer to it. Size of smem
641 * item is returned in @size.
642 */
643 void *qcom_smem_get(unsigned host, unsigned item, size_t *size)
644 {
645 struct smem_partition *part;
646 unsigned long flags;
647 int ret;
648 void *ptr = ERR_PTR(-EPROBE_DEFER);
649
650 if (!__smem)
651 return ptr;
652
653 if (WARN_ON(item >= __smem->item_count))
654 return ERR_PTR(-EINVAL);
655
656 ret = hwspin_lock_timeout_irqsave(__smem->hwlock,
657 HWSPINLOCK_TIMEOUT,
658 &flags);
659 if (ret)
660 return ERR_PTR(ret);
661
662 if (host < SMEM_HOST_COUNT && __smem->partitions[host].virt_base) {
663 part = &__smem->partitions[host];
664 ptr = qcom_smem_get_private(__smem, part, item, size);
665 } else if (__smem->global_partition.virt_base) {
666 part = &__smem->global_partition;
667 ptr = qcom_smem_get_private(__smem, part, item, size);
668 } else {
669 ptr = qcom_smem_get_global(__smem, item, size);
670 }
671
672 hwspin_unlock_irqrestore(__smem->hwlock, &flags);
673
674 return ptr;
675
676 }
677 EXPORT_SYMBOL(qcom_smem_get);
678
679 /**
680 * qcom_smem_get_free_space() - retrieve amount of free space in a partition
681 * @host: the remote processor identifying a partition, or -1
682 *
683 * To be used by smem clients as a quick way to determine if any new
684 * allocations has been made.
685 */
686 int qcom_smem_get_free_space(unsigned host)
687 {
688 struct smem_partition *part;
689 struct smem_partition_header *phdr;
690 struct smem_header *header;
691 unsigned ret;
692
693 if (!__smem)
694 return -EPROBE_DEFER;
695
696 if (host < SMEM_HOST_COUNT && __smem->partitions[host].virt_base) {
697 part = &__smem->partitions[host];
698 phdr = part->virt_base;
699 ret = le32_to_cpu(phdr->offset_free_cached) -
700 le32_to_cpu(phdr->offset_free_uncached);
701
> 702 if (ret > le32_to_cpu(part->size))
703 return -EINVAL;
704 } else if (__smem->global_partition.virt_base) {
705 part = &__smem->global_partition;
706 phdr = part->virt_base;
707 ret = le32_to_cpu(phdr->offset_free_cached) -
708 le32_to_cpu(phdr->offset_free_uncached);
709
710 if (ret > le32_to_cpu(part->size))
711 return -EINVAL;
712 } else {
713 header = __smem->regions[0].virt_base;
714 ret = le32_to_cpu(header->available);
715
716 if (ret > __smem->regions[0].size)
717 return -EINVAL;
718 }
719
720 return ret;
721 }
722 EXPORT_SYMBOL(qcom_smem_get_free_space);
723
--
0-DAY CI Kernel Test Service
https://01.org/lkp