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commitfd0815f632upstream. Events should only be added to a groups rb tree if they have not been removed from their context by list_del_event(). Since remove_on_exec made it possible to call list_del_event() on individual events before they are detached from their group, perf_group_detach() should check each sibling's attach_state before calling add_event_to_groups() on it. Fixes:2e498d0a74("perf: Add support for event removal on exec") Signed-off-by: Budimir Markovic <markovicbudimir@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/ZBFzvQV9tEqoHEtH@gentoo Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.