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Jeremy Sowden 6be8e297f9 lapb: fixed leak of control-blocks.
lapb_register calls lapb_create_cb, which initializes the control-
block's ref-count to one, and __lapb_insert_cb, which increments it when
adding the new block to the list of blocks.

lapb_unregister calls __lapb_remove_cb, which decrements the ref-count
when removing control-block from the list of blocks, and calls lapb_put
itself to decrement the ref-count before returning.

However, lapb_unregister also calls __lapb_devtostruct to look up the
right control-block for the given net_device, and __lapb_devtostruct
also bumps the ref-count, which means that when lapb_unregister returns
the ref-count is still 1 and the control-block is leaked.

Call lapb_put after __lapb_devtostruct to fix leak.

Reported-by: syzbot+afb980676c836b4a0afa@syzkaller.appspotmail.com
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-16 20:44:20 -07:00
arch bpf, x64: fix stack layout of JITed bpf code 2019-06-14 18:02:25 -07:00
block
certs
crypto
Documentation tcp: add tcp_rx_skb_cache sysctl 2019-06-14 20:18:28 -07:00
drivers be2net: Fix number of Rx queues used for flow hashing 2019-06-16 13:47:41 -07:00
fs
include Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-06-15 18:19:47 -07:00
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kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-06-15 18:19:47 -07:00
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net lapb: fixed leak of control-blocks. 2019-06-16 20:44:20 -07:00
samples
scripts
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tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-06-15 18:19:47 -07:00
usr
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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.