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Filename Latest commit message Latest commit date
Xin Long 636d25d557 sctp: not copy sctp_sock pd_lobby in sctp_copy_descendant 
Now sctp_copy_descendant() copies pd_lobby from old sctp scok to new
sctp sock. If sctp_sock_migrate() returns error, it will panic when
releasing new sock and trying to purge pd_lobby due to the incorrect
pointers in pd_lobby.

  [  120.485116] kasan: CONFIG_KASAN_INLINE enabled
  [  120.486270] kasan: GPF could be caused by NULL-ptr deref or user
  [  120.509901] Call Trace:
  [  120.510443]  sctp_ulpevent_free+0x1e8/0x490 [sctp]
  [  120.511438]  sctp_queue_purge_ulpevents+0x97/0xe0 [sctp]
  [  120.512535]  sctp_close+0x13a/0x700 [sctp]
  [  120.517483]  inet_release+0xdc/0x1c0
  [  120.518215]  __sock_release+0x1d2/0x2a0
  [  120.519025]  sctp_do_peeloff+0x30f/0x3c0 [sctp]

We fix it by not copying sctp_sock pd_lobby in sctp_copy_descendan(),
and skb_queue_head_init() can also be removed in sctp_sock_migrate().

Reported-by: syzbot+85e0b422ff140b03672a@syzkaller.appspotmail.com
Fixes: 89664c6236 ("sctp: sctp_sock_migrate() returns error if sctp_bind_addr_dup() fails")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-18 18:23:11 -07:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-03-16 12:20:08 -07:00
block mm: refactor readahead defines in mm.h 2019-03-12 10:04:01 -07:00
certs
crypto lib/lzo: separate lzo-rle from lzo 2019-03-07 18:32:03 -08:00
Documentation doc: fix link to MSG_ZEROCOPY patchset 2019-03-18 09:50:21 -07:00
drivers vxlan: Don't call gro_cells_destroy() before device is unregistered 2019-03-18 17:07:27 -07:00
fs filesystem-dax for 5.1 2019-03-13 09:37:09 -07:00
include sctp: get sctphdr by offset in sctp_compute_cksum 2019-03-18 18:16:12 -07:00
init init/main: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
ipc Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-03-16 12:20:08 -07:00
lib Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:43:42 -07:00
LICENSES
mm filemap: pass vm_fault to the mmap ra helpers 2019-03-14 14:36:20 -07:00
net sctp: not copy sctp_sock pd_lobby in sctp_copy_descendant 2019-03-18 18:23:11 -07:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-11 08:54:01 -07:00
scripts Kconfig updates for v5.1 2019-03-13 10:06:28 -07:00
security selinux/stable-5.1 PR 20190312 2019-03-13 11:10:42 -07:00
sound Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-03-16 12:20:08 -07:00
usr
virt ACPI updates for 5.1-rc1 2019-03-06 13:33:11 -08:00
.clang-format Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:43:42 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
Kbuild Kbuild updates for v5.1 2019-03-10 17:48:21 -07:00
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-14 09:28:12 -07:00
Makefile Kbuild updates for v5.1 2019-03-10 17:48:21 -07:00
README

README 

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.