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.
Daniel Borkmann
authored
Commit c4c84f6f ("bpf: drop unnecessary bpf_capable() check in BPF_MAP_FREEZE command") moved the permissions check outside of the freeze_mutex in the map_freeze() handler. The error paths still jumps to the err_put which tries to unlock the freeze_mutex even though it was not locked in the first place. Fix it. Fixes: c4c84f6f ("bpf: drop unnecessary bpf_capable() check in BPF_MAP_FREEZE command") Reported-by: syzbot+8982e75c2878b9ffeac5@syzkaller.appspotmail.com Signed-off-by:Daniel Borkmann <daniel@iogearbox.net>