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[ Upstream commitc0c652fc70] If config->aggr_map is NULL and config->aggr_get_id is not NULL, the function print_aggr() will still calling arrg_update_shadow(), which can result in accessing the invalid pointer. Fixes:088519f318("perf stat: Move the display functions to stat-display.c") Signed-off-by: Hongbo Yao <yaohongbo@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wei Li <liwei391@huawei.com> Link: https://lore.kernel.org/lkml/20200608163625.GC3073@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 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.