ab5b526da0
Individual dumpit ops (start, dumpit, done) are locked by genl_lock if !family->parallel_ops. However, multiple genl_family_rcv_msg_dumpit() calls may in in flight in parallel. Each has a separate struct genl_dumpit_info allocated but they share the same family->attrbuf. Fix this by allocating separate memory for attrs for dumpit ops, for non-parallel_ops (for parallel_ops it is done already). Reported-by: syzbot+495688b736534bb6c6ad@syzkaller.appspotmail.com Reported-by: syzbot+ff59dc711f2cff879a05@syzkaller.appspotmail.com Reported-by: syzbot+dbe02e13bcce52bcf182@syzkaller.appspotmail.com Reported-by: syzbot+9cb7edb2906ea1e83006@syzkaller.appspotmail.com Fixes: bf813b0afeae ("net: genetlink: parse attrs and store in contect info struct during dumpit") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
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.