forked from TencentOS/TencentOS-kernel
a32a2e1954
commit 595a334148449bd1d27cf5d6fcb3b0d718cb1b9f upstream.
If the dw_edma_alloc_burst() function fails then we free "chunk" but
it's still on the "desc->chunk->list" list so it will lead to a use
after free. Also the "->chunks_alloc" count is incremented when it
shouldn't be.
In current kernels small allocations are guaranteed to succeed and
dw_edma_alloc_burst() can't fail so this will not actually affect
runtime.
Fixes: e63d79d1ffcd ("dmaengine: Add Synopsys eDMA IP core driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Link: https://lore.kernel.org/r/X9dTBFrUPEvvW7qc@mwanda
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| .. | ||
| Kconfig | ||
| Makefile | ||
| dw-edma-core.c | ||
| dw-edma-core.h | ||
| dw-edma-pcie.c | ||
| dw-edma-v0-core.c | ||
| dw-edma-v0-core.h | ||
| dw-edma-v0-debugfs.c | ||
| dw-edma-v0-debugfs.h | ||
| dw-edma-v0-regs.h | ||