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Filename Latest commit message Latest commit date
He, Bo cef0d4948c HID: debug: fix race condition with between rdesc_show() and device removal
There is a race condition that could happen if hid_debug_rdesc_show()
is running while hdev is in the process of going away (device removal,
system suspend, etc) which could result in NULL pointer dereference:

	 BUG: unable to handle kernel paging request at 0000000783316040
	 CPU: 1 PID: 1512 Comm: getevent Tainted: G     U     O 4.19.20-quilt-2e5dc0ac-00029-gc455a447dd55 #1
	 RIP: 0010:hid_dump_device+0x9b/0x160
	 Call Trace:
	  hid_debug_rdesc_show+0x72/0x1d0
	  seq_read+0xe0/0x410
	  full_proxy_read+0x5f/0x90
	  __vfs_read+0x3a/0x170
	  vfs_read+0xa0/0x150
	  ksys_read+0x58/0xc0
	  __x64_sys_read+0x1a/0x20
	  do_syscall_64+0x55/0x110
	  entry_SYSCALL_64_after_hwframe+0x49/0xbe

Grab driver_input_lock to make sure the input device exists throughout the
whole process of dumping the rdesc.

[jkosina@suse.cz: update changelog a bit]
Signed-off-by: he, bo <bo.he@intel.com>
Signed-off-by: "Zhang, Jun" <jun.zhang@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-03-19 15:41:08 +01:00
arch Merge branch 'akpm' (patches from Andrew) 2019-03-07 19:25:37 -08:00
block for-linus-20190215 2019-02-15 09:12:28 -08:00
certs kbuild: remove redundant target cleaning on failure 2019-01-06 09:46:51 +09:00
crypto lib/lzo: separate lzo-rle from lzo 2019-03-07 18:32:03 -08:00
Documentation Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-03-08 08:58:25 -08:00
drivers HID: debug: fix race condition with between rdesc_show() and device removal 2019-03-19 15:41:08 +01:00
fs Merge branch 'akpm' (patches from Andrew) 2019-03-07 19:25:37 -08:00
include Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-03-08 08:58:25 -08:00
init Merge branch 'akpm' (patches from Andrew) 2019-03-07 19:25:37 -08:00
ipc ipc/sem.c: replace kvmalloc/memset with kvzalloc and use struct_size 2019-03-07 18:32:02 -08:00
kernel Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-03-08 08:58:25 -08:00
lib Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-03-08 08:58:25 -08:00
LICENSES
mm Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-03-07 17:43:58 -08:00
net Merge branch 'akpm' (patches from Andrew) 2019-03-06 10:31:36 -08:00
samples Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-03-08 08:58:25 -08:00
scripts scripts/gdb: replace flags (MS_xyz -> SB_xyz) 2019-03-07 18:32:02 -08:00
security audit/stable-5.1 PR 20190305 2019-03-07 12:20:11 -08:00
sound Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
tools Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-03-08 08:58:25 -08:00
usr user/Makefile: Fix typo and capitalization in comment section 2018-12-11 00:18:03 +09:00
virt ACPI updates for 5.1-rc1 2019-03-06 13:33:11 -08:00
.clang-format clang-format: Update .clang-format with the latest for_each macro list 2019-01-19 19:26:06 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore kbuild: Add support for DT binding schema checks 2018-12-13 09:41:32 -06:00
.mailmap .mailmap: Add Mathieu Othacehe 2019-02-21 11:41:19 +00:00
COPYING
CREDITS Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
Kbuild Merge branch 'locking/atomics' into locking/core, to pick up WIP commits 2019-02-11 14:27:05 +01:00
Kconfig
MAINTAINERS Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-03-08 08:58:25 -08:00
Makefile Driver core patches for 5.1-rc1 2019-03-06 14:52:48 -08:00
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.