Shay Drory cb1aa1da04 RDMA/mlx4: Do not map the core_clock page to user space unless enabled ... commit 404e5a1269 upstream. Currently when mlx4 maps the hca_core_clock page to the user space there are read-modifiable registers, one of which is semaphore, on this page as well as the clock counter. If user reads the wrong offset, it can modify the semaphore and hang the device. Do not map the hca_core_clock page to the user space unless the device has been put in a backwards compatibility mode to support this feature. After this patch, mlx4 core_clock won't be mapped to user space on the majority of existing devices and the uverbs device time feature in ibv_query_rt_values_ex() will be disabled. Fixes: 52033cfb5a ("IB/mlx4: Add mmap call to map the hardware clock") Link: https://lore.kernel.org/r/9632304e0d6790af84b3b706d8c18732bc0d5e27.1622726305.git.leonro@nvidia.com Signed-off-by: Shay Drory <shayd@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-06-16 12:01:44 +02:00
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cmd.h
cq.h	RDMA/mlx4: Redo TX checksum offload in line with docs	2020-01-03 16:37:58 -04:00
device.h	RDMA/mlx4: Do not map the core_clock page to user space unless enabled	2021-06-16 12:01:44 +02:00
doorbell.h
driver.h
qp.h	IB/mlx4: Replace zero-length array with flexible-array	2020-05-09 20:49:13 -07:00
srq.h