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8551844d2c
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Ping-Ke Shih 8551844d2c wifi: rtw89: fix crash due to null pointer of sta in AP mode 
In AP mode, 'sta' could be NULL if sending broadcast/multicast packets,
so we should check before accessing, or it causes crash:

  BUG: kernel NULL pointer dereference, address: 0000000000000004
  #PF: supervisor read access in kernel mode
  #PF: error_code(0x0000) - not-present page
  PGD 0 P4D 0
  Oops: 0000 [#1] PREEMPT SMP PTI
  CPU: 2 PID: 92 Comm: kworker/u33:0 Tainted: G           OE
  Workqueue: rtw89_tx_wq rtw89_core_txq_work [rtw89_core]
  RIP: 0010:rtw89_core_tx_update_desc_info+0x2cc/0x7d0 [rtw89_core]
  Code: e2 01 41 be 04 00 00 00 41 8b 84 c4 0c 01 00 00 75 0d 45 31 f6 ...
  RSP: 0018:ffffb4cf807afce0 EFLAGS: 00010297
  RAX: 0000000000000001 RBX: ffffb4cf807afd48 RCX: 0000000000000000
  RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
  RBP: ffffb4cf807afd30 R08: ffff9b28c1e59808 R09: ffff9b28c0297100
  R10: 00000000052cf7c4 R11: 00000000052cf7c4 R12: ffff9b28c1602040
  R13: ffff9b28c07b3000 R14: 0000000000000004 R15: 0000000000000000
  FS:  0000000000000000(0000) GS:ffff9b2a73280000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 0000000000000004 CR3: 00000001ca410003 CR4: 00000000000606e0
  Call Trace:
   <TASK>
   rtw89_core_tx_write+0x7c/0x100 [rtw89_core]
   rtw89_core_txq_work+0x1b4/0x530 [rtw89_core]
   process_one_work+0x222/0x3f0
   worker_thread+0x50/0x3f0
   kthread+0x16b/0x190
   ? rescuer_thread+0x3a0/0x3a0
   ? set_kthread_struct+0x50/0x50
   ret_from_fork+0x22/0x30
   </TASK>

Fixes: e5307c9cd7 ("wifi: rtw89: set data lowest rate according to AP supported rate")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230406093009.5869-1-pkshih@realtek.com
2023-04-14 15:25:30 +03:00
arch linux-can-next-for-6.4-20230404-2 2023-04-05 17:06:02 -07:00
block block: remove obsolete config BLOCK_COMPAT 2023-03-16 09:35:44 -06:00
certs Kbuild updates for v6.3 2023-02-26 11:53:25 -08:00
crypto asymmetric_keys: log on fatal failures in PE/pkcs7 2023-03-21 16:23:56 +00:00
Documentation dt-bindings: net: dsa: brcm,sf2: Drop unneeded "#address-cells/#size-cells" 2023-04-05 17:53:33 -07:00
drivers wifi: rtw89: fix crash due to null pointer of sta in AP mode 2023-04-14 15:25:30 +03:00
fs Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-30 14:43:03 -07:00
include wifi: mac80211: add flush_sta method 2023-04-13 16:32:31 +02:00
init bootconfig: Change message if no bootconfig with CONFIG_BOOT_CONFIG_FORCE=y 2023-03-22 22:21:43 +09:00
io_uring Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-30 14:43:03 -07:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-30 14:43:03 -07:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-30 14:43:03 -07:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm 21 hotfixes, 8 of which are cc:stable. 11 are for MM, the remainder are 2023-03-24 18:06:11 -07:00
net wifi: mac80211: add flush_sta method 2023-04-13 16:32:31 +02:00
rust Rust fixes for 6.3-rc1 2023-03-03 14:51:15 -08:00
samples LoongArch changes for v6.3 2023-03-01 09:27:00 -08:00
scripts Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-30 14:43:03 -07:00
security Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-24 10:10:20 -07:00
sound ALSA: hda/realtek: Add quirk for Lenovo ZhaoYang CF4620Z 2023-03-29 14:45:07 +02:00
tools vsock/test: update expected return values 2023-04-04 12:46:24 +02:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt KVM/riscv changes for 6.3 2023-02-15 12:33:28 -05:00
.clang-format cpumask: re-introduce constant-sized cpumask optimizations 2023-03-05 14:30:34 -08:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for *.dtso files 2023-02-26 15:28:23 +09:00
.gitignore kbuild: rpm-pkg: move source components to rpmbuild/SOURCES 2023-03-16 22:45:56 +09:00
.mailmap mailmap: add entries for Richard Leitner 2023-03-23 17:18:35 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS There is no particular theme here - mainly quick hits all over the tree. 2023-02-23 17:55:40 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS linux-can-next-for-6.4-20230404-2 2023-04-05 17:06:02 -07:00
Makefile Linux 6.3-rc4 2023-03-26 14:40:20 -07:00
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.