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Brian Norris 1aa48f0886 Revert "mwifiex: restructure rx_reorder_tbl_lock usage"
This reverts commit 5188d5453b, because it
introduced lock recursion:

  BUG: spinlock recursion on CPU#2, kworker/u13:1/395
   lock: 0xffffffc0e28a47f0, .magic: dead4ead, .owner: kworker/u13:1/395, .owner_cpu: 2
  CPU: 2 PID: 395 Comm: kworker/u13:1 Not tainted 4.20.0-rc4+ #2
  Hardware name: Google Kevin (DT)
  Workqueue: MWIFIEX_RX_WORK_QUEUE mwifiex_rx_work_queue [mwifiex]
  Call trace:
   dump_backtrace+0x0/0x140
   show_stack+0x20/0x28
   dump_stack+0x84/0xa4
   spin_bug+0x98/0xa4
   do_raw_spin_lock+0x5c/0xdc
   _raw_spin_lock_irqsave+0x38/0x48
   mwifiex_flush_data+0x2c/0xa4 [mwifiex]
   call_timer_fn+0xcc/0x1c4
   run_timer_softirq+0x264/0x4f0
   __do_softirq+0x1a8/0x35c
   do_softirq+0x54/0x64
   netif_rx_ni+0xe8/0x120
   mwifiex_recv_packet+0xfc/0x10c [mwifiex]
   mwifiex_process_rx_packet+0x1d4/0x238 [mwifiex]
   mwifiex_11n_dispatch_pkt+0x190/0x1ac [mwifiex]
   mwifiex_11n_rx_reorder_pkt+0x28c/0x354 [mwifiex]
   mwifiex_process_sta_rx_packet+0x204/0x26c [mwifiex]
   mwifiex_handle_rx_packet+0x15c/0x16c [mwifiex]
   mwifiex_rx_work_queue+0x104/0x134 [mwifiex]
   worker_thread+0x4cc/0x72c
   kthread+0x134/0x13c
   ret_from_fork+0x10/0x18

This was clearly not tested well at all. I simply performed 'wget' in a
loop and it fell over within a few seconds.

Fixes: 5188d5453b ("mwifiex: restructure rx_reorder_tbl_lock usage")
Cc: <stable@vger.kernel.org>
Cc: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-12-13 15:53:27 +02:00
arch arm64 fixes: 2018-11-24 09:42:32 -08:00
block SCSI: fix queue cleanup race before queue initialization is done 2018-11-14 08:19:10 -07:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto crypto: user - Zeroize whole structure given to user space 2018-11-09 17:35:43 +08:00
Documentation XArray updates for 4.20-rc4 2018-11-24 18:44:01 -08:00
drivers Revert "mwifiex: restructure rx_reorder_tbl_lock usage" 2018-12-13 15:53:27 +02:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs NFS client bugfixes for Linux 4.20 2018-11-25 09:19:58 -08:00
include Two dma-direct / swiotlb regressions fixes 2018-11-25 09:24:40 -08:00
init memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
ipc ipc: IPCMNI limit check for semmni 2018-10-31 08:54:14 -07:00
kernel swiotlb: Skip cache maintenance on map error 2018-11-21 18:47:58 +01:00
lib XArray updates for 4.20-rc4 2018-11-24 18:44:01 -08:00
LICENSES This is a fairly typical cycle for documentation. There's some welcome 2018-10-24 18:01:11 +01:00
mm mm/memblock.c: fix a typo in __next_mem_pfn_range() comments 2018-11-18 10:15:10 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-11-24 09:19:38 -08:00
samples VFIO updates for v4.20 2018-10-31 11:01:38 -07:00
scripts scripts/spdxcheck.py: make python3 compliant 2018-11-18 10:15:10 -08:00
security selinux/stable-4.20 PR 20181115 2018-11-15 11:26:09 -06:00
sound ALSA: hda/ca0132 - fix AE-5 pincfg 2018-11-19 12:18:43 +01:00
tools Power management fixes for 4.20-rc4 2018-11-23 10:52:57 -08:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt Revert "mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks" 2018-10-26 16:25:19 -07:00
.clang-format page cache: Convert find_get_pages_contig to XArray 2018-10-21 10:46:34 -04:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap mailmap: Update email for Punit Agrawal 2018-11-05 10:02:11 +00:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS MAINTAINERS: change Sparse's maintainer 2018-11-25 09:17:43 -08:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS MAINTAINERS: change Sparse's maintainer 2018-11-25 09:17:43 -08:00
Makefile Linux 4.20-rc4 2018-11-25 14:19:31 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.