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Filename Latest commit message Latest commit date
Zhang Changzhong c01ac092d9 xfrm6: fix inet6_dev refcount underflow problem 
[ Upstream commit cc9b364bb1d58d3dae270c7a931a8cc717dc2b3b ]

There are race conditions that may lead to inet6_dev refcount underflow
in xfrm6_dst_destroy() and rt6_uncached_list_flush_dev().

One of the refcount underflow bugs is shown below:
	(cpu 1)                	|	(cpu 2)
xfrm6_dst_destroy()             |
  ...                           |
  in6_dev_put()                 |
				|  rt6_uncached_list_flush_dev()
  ...				|    ...
				|    in6_dev_put()
  rt6_uncached_list_del()       |    ...
  ...                           |

xfrm6_dst_destroy() calls rt6_uncached_list_del() after in6_dev_put(),
so rt6_uncached_list_flush_dev() has a chance to call in6_dev_put()
again for the same inet6_dev.

Fix it by moving in6_dev_put() after rt6_uncached_list_del() in
xfrm6_dst_destroy().

Fixes: 510c321b55 ("xfrm: reuse uncached_list to track xdsts")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-25 11:53:25 +02:00
arch s390/pci: fix iommu bitmap allocation 2023-10-25 11:53:24 +02:00
block
certs
crypto X.509: if signature is unsupported skip validation 2023-09-23 10:59:55 +02:00
Documentation Documentation: sysctl: align cells in second content column 2023-10-25 11:53:20 +02:00
drivers phy: mapphone-mdm6600: Fix pinctrl_pm handling for sleep pins 2023-10-25 11:53:25 +02:00
fs btrfs: fix some -Wmaybe-uninitialized warnings in ioctl.c 2023-10-25 11:53:23 +02:00
include Bluetooth: hci_sock: Correctly bounds check and pad HCI_MON_NEW_INDEX name 2023-10-25 11:53:25 +02:00
init
ipc
kernel perf: Disallow mis-matched inherited group reads 2023-10-25 11:53:24 +02:00
lib lib/test_meminit: fix off-by-one error in test_pages() 2023-10-25 11:53:17 +02:00
LICENSES
mm tmpfs: verify {g,u}id mount options correctly 2023-09-23 10:59:40 +02:00
net xfrm6: fix inet6_dev refcount underflow problem 2023-10-25 11:53:25 +02:00
samples
scripts modpost: add missing else to the "of" check 2023-10-10 21:46:44 +02:00
security ima: rework CONFIG_IMA dependency block 2023-10-10 21:46:46 +02:00
sound ASoC: pxa: fix a memory leak in probe() 2023-10-25 11:53:24 +02:00
tools cpupower: add Makefile dependencies for install targets 2023-10-10 21:46:45 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
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COPYING
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Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.258 2023-10-10 21:46:46 +02:00
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.