mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-05 02:21:52 +09:00
11b694387a
[ Upstream commit101f0cd4f2] UBSAN triggers the following undefined behaviour warnings: [...] [ 13.236124] UBSAN: Undefined behaviour in drivers/net/ethernet/amazon/ena/ena_eth_com.c:468:22 [ 13.240043] shift exponent 64 is too large for 64-bit type 'long long unsigned int' [...] [ 13.744769] UBSAN: Undefined behaviour in drivers/net/ethernet/amazon/ena/ena_eth_com.c:373:4 [ 13.748694] shift exponent 64 is too large for 64-bit type 'long long unsigned int' [...] When splitting the address to high and low, GENMASK_ULL is used to generate a bitmask with dma_addr_bits field from io_sq (in ena_com_prepare_tx and ena_com_add_single_rx_desc). The problem is that dma_addr_bits is not initialized with a proper value (besides being cleared in ena_com_create_io_queue). Assign dma_addr_bits the correct value that is stored in ena_dev when initializing the SQ. Fixes:1738cd3ed3("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)") Signed-off-by: Gal Pressman <pressmangal@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.