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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-18 16:49:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-18 16:49:34 -0800 |
| commit | 17e232b6d2feddd0285e59dbe641c0efe67a5ee6 (patch) | |
| tree | 598584ca5d9aa5a86f4cfea1a0363c1af8d07de5 /kernel/dma | |
| parent | 77c9622d87d21d989eb1a866e4df8eb5e3ce00e0 (diff) | |
| parent | 7c65aa3cc072cee76f577262fbe381a111a98774 (diff) | |
| download | linux-17e232b6d2feddd0285e59dbe641c0efe67a5ee6.tar.gz linux-17e232b6d2feddd0285e59dbe641c0efe67a5ee6.tar.bz2 linux-17e232b6d2feddd0285e59dbe641c0efe67a5ee6.zip | |
Merge tag 'dma-mapping-6.8-2024-01-18' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
- fix kerneldoc warnings (Randy Dunlap)
- better bounds checking in swiotlb (ZhangPeng)
* tag 'dma-mapping-6.8-2024-01-18' of git://git.infradead.org/users/hch/dma-mapping:
dma-debug: fix kernel-doc warnings
swiotlb: check alloc_size before the allocation of a new memory pool
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/debug.c | 3 | ||||
| -rw-r--r-- | kernel/dma/swiotlb.c | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index 1a5c86dd87d5..a6e3792b15f8 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -62,7 +62,8 @@ enum map_err_types { * @pfn: page frame of the start address * @offset: offset of mapping relative to pfn * @map_err_type: track whether dma_mapping_error() was checked - * @stacktrace: support backtraces when a violation is detected + * @stack_len: number of backtrace entries in @stack_entries + * @stack_entries: stack of backtrace history */ struct dma_debug_entry { struct list_head list; diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 97c298b210bc..b079a9a8e087 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -1136,6 +1136,9 @@ static int swiotlb_find_slots(struct device *dev, phys_addr_t orig_addr, int cpu, i; int index; + if (alloc_size > IO_TLB_SEGSIZE * IO_TLB_SIZE) + return -1; + cpu = raw_smp_processor_id(); for (i = 0; i < default_nareas; ++i) { index = swiotlb_search_area(dev, cpu, i, orig_addr, alloc_size, |