mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-06 19:08:57 +09:00
0e6aa61b54
[ Upstream commit 556f93b90c1872ad85e216e613c0b33803e621cb ]
In function create_ib_ah() the following line attempts
to left shift the return value of mlx5r_ib_rate() by 4
and store it in the stat_rate_sl member of av:
However the code overlooks the fact that mlx5r_ib_rate()
may return -EINVAL if the rate passed to it is less than
IB_RATE_2_5_GBPS or greater than IB_RATE_800_GBPS.
Because of this, the code may invoke undefined behaviour when
shifting a signed negative value when doing "-EINVAL << 4".
To fix this check for errors before assigning stat_rate_sl and
propagate any error value to the callers.
Fixes: c534ffda781f ("RDMA/mlx5: Fix AH static rate parsing")
Signed-off-by: Qasim Ijaz <qasdev00@gmail.com>
Link: https://patch.msgid.link/20250304140246.205919-1-qasdev00@gmail.com
Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.