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The source for the Linux kernel used in Windows Subsystem for Linux 2 (WSL2)
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Luiz Augusto von Dentz ee7c5e814f Bluetooth: RFCOMM: Fix possible deadlock on socket shutdown/release 
[ Upstream commit 812e92b824 ]

Due to change to switch to use lock_sock inside rfcomm_sk_state_change
the socket shutdown/release procedure can cause a deadlock:

    rfcomm_sock_shutdown():
      lock_sock();
      __rfcomm_sock_close():
        rfcomm_dlc_close():
          __rfcomm_dlc_close():
            rfcomm_dlc_lock();
            rfcomm_sk_state_change():
              lock_sock();

To fix this when the call __rfcomm_sock_close is now done without
holding the lock_sock since rfcomm_dlc_lock exists to protect
the dlc data there is no need to use lock_sock in that code path.

Link: https://lore.kernel.org/all/CAD+dNTsbuU4w+Y_P7o+VEN7BYCAbZuwZx2+tH+OTzCdcZF82YA@mail.gmail.com/
Fixes: b7ce436a5d ("Bluetooth: switch to lock_sock in RFCOMM")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2022-10-26 12:34:44 +02:00
Documentation fs: record I_DIRTY_TIME even if inode already has I_DIRTY_INODE 2022-10-26 12:34:27 +02:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
arch x86/resctrl: Fix to restore to original value when re-enabling hardware prefetch register 2022-10-26 12:34:40 +02:00
block blk-wbt: call rq_qos_add() after wb_normal is initialized 2022-10-26 12:34:33 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:22:01 +02:00
crypto KEYS: asymmetric: enforce SM2 signature use pkey algo 2022-08-17 14:24:28 +02:00
drivers wifi: mt76: mt7915: do not check state before configuring implicit beamform 2022-10-26 12:34:43 +02:00
fs NFSD: Fix handling of oversized NFSv4 COMPOUND requests 2022-10-26 12:34:38 +02:00
include bpf: Fix reference state management for synchronous callbacks 2022-10-26 12:34:39 +02:00
init stack: Declare {randomize_,}kstack_offset to fix Sparse warnings 2022-08-17 14:23:10 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-09 10:23:10 +02:00
kernel bpf: btf: fix truncated last_member_type_id in btf_struct_resolve 2022-10-26 12:34:42 +02:00
lib crypto: lib - remove unneeded selection of XOR_BLOCKS 2022-09-05 10:30:03 +02:00
mm mm/mmap: undo ->mmap() when arch_validate_flags() fails 2022-10-26 12:34:24 +02:00
net Bluetooth: RFCOMM: Fix possible deadlock on socket shutdown/release 2022-10-26 12:34:44 +02:00
samples samples/landlock: Format with clang-format 2022-06-09 10:23:23 +02:00
scripts selinux: use "grep -E" instead of "egrep" 2022-10-26 12:34:35 +02:00
security ima: fix blocking of security.ima xattrs of unsupported algorithms 2022-10-26 12:34:35 +02:00
sound ASoC: wcd934x: fix order of Slimbus unprepare/disable 2022-10-26 12:34:21 +02:00
tools selftests/xsk: Avoid use-after-free on ctx 2022-10-26 12:34:41 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:27:15 +01:00
virt KVM: SEV: add cache flush to solve SEV cache incoherency issues 2022-09-23 14:15:52 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Input: goodix - add a goodix.h header file 2022-07-12 16:34:51 +02:00
Makefile hardening: Remove Clang's enable flag for -ftrivial-auto-var-init=zero 2022-10-26 12:34:28 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.