Petr Tesarik ce7612496a swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC ... commit 53c87e846e upstream. Limit the free list length to the size of the IO TLB. Transient pool can be smaller than IO_TLB_SEGSIZE, but the free list is initialized with the assumption that the total number of slots is a multiple of IO_TLB_SEGSIZE. As a result, swiotlb_area_find_slots() may allocate slots past the end of a transient IO TLB buffer. Reported-by: Niklas Schnelle <schnelle@linux.ibm.com> Closes: https://lore.kernel.org/linux-iommu/104a8c8fedffd1ff8a2890983e2ec1c26bff6810.camel@linux.ibm.com/ Fixes: 79636caad3 ("swiotlb: if swiotlb is full, fall back to a transient memory pool") Cc: stable@vger.kernel.org Signed-off-by: Petr Tesarik <petr.tesarik1@huawei-partners.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-11-28 17:20:13 +00:00
..
coherent.c
contiguous.c	Revert "dma-contiguous: check for memory region overlap"	2023-09-08 05:58:32 -03:00
debug.c	dma-debug: don't call __dma_entry_alloc_check_leak() under free_entries_lock	2023-08-30 11:29:08 +02:00
debug.h
direct.c	swiotlb: if swiotlb is full, fall back to a transient memory pool	2023-08-01 18:02:20 +02:00
direct.h
dummy.c
Kconfig	dma-contiguous: fix the Kconfig entry for CONFIG_DMA_NUMA_CMA	2023-08-30 13:52:53 +02:00
Makefile
map_benchmark.c
mapping.c	dma-mapping: move arch_dma_set_mask() declaration to header	2023-07-31 17:54:28 +02:00
ops_helpers.c
pool.c	dma-pool: remove a __maybe_unused label in atomic_pool_expand	2023-08-31 14:12:37 +02:00
remap.c
swiotlb.c	swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC	2023-11-28 17:20:13 +00:00