Lance Richardson 1fe97f68fc dma: fix call order in dmam_free_coherent ... [ Upstream commit 28e8b7406d ] dmam_free_coherent() frees a DMA allocation, which makes the freed vaddr available for reuse, then calls devres_destroy() to remove and free the data structure used to track the DMA allocation. Between the two calls, it is possible for a concurrent task to make an allocation with the same vaddr and add it to the devres list. If this happens, there will be two entries in the devres list with the same vaddr and devres_destroy() can free the wrong entry, triggering the WARN_ON() in dmam_match. Fix by destroying the devres entry before freeing the DMA allocation. Tested: kokonut //net/encryption http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03 Fixes: 9ac7849e35 ("devres: device resource management") Signed-off-by: Lance Richardson <rlance@google.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-08-03 08:54:36 +02:00
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coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 15:35:26 -08:00
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	dma-debug: teach add_dma_entry() about DMA_ATTR_SKIP_CPU_SYNC	2021-10-18 12:46:45 +02:00
direct.c	dma-direct: Leak pages on dma_set_decrypted() failure	2024-04-13 13:07:32 +02:00
direct.h	dma-mapping: force bouncing if the kmalloc() size is not cache-line-aligned	2023-06-19 16:19:23 -07:00
dummy.c	dma-mapping: return error code from dma_dummy_map_sg()	2021-08-09 17:13:06 +02:00
Kconfig	dma-contiguous: fix the Kconfig entry for CONFIG_DMA_NUMA_CMA	2023-08-30 13:52:53 +02:00
Makefile	dma-mapping: remove CONFIG_DMA_REMAP	2022-03-03 14:00:57 +03:00
map_benchmark.c	dma-mapping: benchmark: avoid needless copy_to_user if benchmark fails	2024-07-11 12:49:20 +02:00
mapping.c	dma: fix call order in dmam_free_coherent	2024-08-03 08:54:36 +02:00
ops_helpers.c	dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}	2021-07-16 11:30:26 +02:00
pool.c	dma-pool: remove a __maybe_unused label in atomic_pool_expand	2023-08-31 14:12:37 +02:00
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-06-07 15:06:28 +02:00
swiotlb.c	swiotlb: extend buffer pre-padding to alloc_align_mask if necessary	2024-06-21 14:38:46 +02:00