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[ Upstream commit26b7d1a271] smatch reports the warning below: drivers/infiniband/core/uverbs_std_types_counters.c:110 ib_uverbs_handler_UVERBS_METHOD_COUNTERS_READ() error: 'uattr' dereferencing possible ERR_PTR() The return value of uattr maybe ERR_PTR(-ENOENT), fix this by checking the value of uattr before using it. Fixes:ebb6796bd3("IB/uverbs: Add read counters support") Signed-off-by: Xiang Yang <xiangyang3@huawei.com> Link: https://lore.kernel.org/r/20230804022525.1916766-1-xiangyang3@huawei.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.