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[ Upstream commit951c6db954] syzbot reported a memory leak when an allocation fails within genradix_prealloc() for output streams. That's because genradix_prealloc() leaves initialized members initialized when the issue happens and SCTP stack will abort the current initialization but without cleaning up such members. The fix here is to always call genradix_free() when genradix_prealloc() fails, for output and also input streams, as it suffers from the same issue. Reported-by: syzbot+772d9e36c490b18d51d1@syzkaller.appspotmail.com Fixes:2075e50caf("sctp: convert to genradix") Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Tested-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 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.