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Aaron Ma 888d89034f wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read 
Kernel NULL pointer dereference when ACPI SAR table isn't implemented well.
Fix the error code of return to mark the ACPI SAR table as invalid.

[    5.077128] mt7921e 0000:06:00.0: sar cnt = 0
[    5.077381] BUG: kernel NULL pointer dereference, address:
0000000000000004
[    5.077630] #PF: supervisor read access in kernel mode
[    5.077883] #PF: error_code(0x0000) - not-present page
[    5.078138] PGD 0 P4D 0
[    5.078398] Oops: 0000 [#1] PREEMPT SMP NOPTI
[    5.079202] RIP: 0010:mt7921_init_acpi_sar+0x106/0x220
[mt7921_common]
...
[    5.080786] Call Trace:
[    5.080786]  <TASK>
[    5.080786]  mt7921_register_device+0x37d/0x490 [mt7921_common]
[    5.080786]  mt7921_pci_probe.part.0+0x2ee/0x310 [mt7921e]
[    5.080786]  mt7921_pci_probe+0x52/0x70 [mt7921e]
[    5.080786]  local_pci_probe+0x47/0x90
[    5.080786]  pci_call_probe+0x55/0x190
[    5.080786]  pci_device_probe+0x84/0x120

Fixes: f965333e49 ("mt76: mt7921: introduce ACPI SAR support")
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
History 2023-02-03 14:47:17 +01:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-02 14:49:55 -08:00
block block-6.2-2023-01-20 2023-01-20 12:44:41 -08:00
certs certs: make system keyring depend on built-in x509 parser 2022-09-24 04:31:18 +09:00
crypto wifi: cfg80211: Deduplicate certificate loading 2023-01-19 14:46:45 +01:00
Documentation dt-bindings: net: Add Motorcomm yt8xxx ethernet phy 2023-02-03 09:34:50 +00:00
drivers wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read 2023-02-03 14:47:17 +01:00
fs Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-02 14:49:55 -08:00
include netfilter: flowtable: cache info of last offload 2023-02-03 09:31:24 +00:00
init bpf-next-for-netdev 2023-01-28 00:00:14 -08:00
io_uring io_uring: always prep_async for drain requests 2023-01-27 06:29:29 -07:00
ipc Non-MM patches for 6.2-rc1. 2022-12-12 17:28:58 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-02 14:49:55 -08:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-02 14:49:55 -08:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm Revert "mm/compaction: fix set skip in fast_find_migrateblock" 2023-01-29 10:38:43 -08:00
net netfilter: nf_conntrack: allow early drop of offloaded UDP conns 2023-02-03 09:31:24 +00:00
rust rust: print: avoid evaluating arguments in pr_* macros in unsafe blocks 2023-01-16 00:54:35 +01:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-02 14:49:55 -08:00
scripts Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-02 14:49:55 -08:00
security tomoyo: Update website link 2023-01-13 23:11:38 +09:00
sound sound fixes for 6.2-rc7 2023-02-01 10:26:23 -08:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-02 14:49:55 -08:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt VFIO fixes for v6.2-rc6 2023-01-23 11:56:07 -08:00
.clang-format iommufd for 6.2 2022-12-14 09:15:43 -08:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.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 dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore *.rpm 2022-12-30 17:22:14 +09:00
.mailmap mailmap: add John Crispin's entry 2023-02-02 11:35:33 -08:00
.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 MAINTAINERS: update SCTP maintainers 2023-02-02 11:35:33 -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 dt-bindings: net: Add Motorcomm yt8xxx ethernet phy 2023-02-03 09:34:50 +00:00
Makefile Linux 6.2-rc6 2023-01-29 13:59:43 -08:00
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.