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Zhaoyang Huang 9773a886f2 arm64: Set __nocfi on swsusp_arch_resume() commit `e2f8216ca2` upstream. A DABT is reported[1] on an android based system when resume from hiberate. This happens because swsusp_arch_suspend_exit() is marked with SYM_CODE_() and does not have a CFI hash, but swsusp_arch_resume() will attempt to verify the CFI hash when calling a copy of swsusp_arch_suspend_exit(). Given that there's an existing requirement that the entrypoint to swsusp_arch_suspend_exit() is the first byte of the .hibernate_exit.text section, we cannot fix this by marking swsusp_arch_suspend_exit() with SYM_FUNC_(). The simplest fix for now is to disable the CFI check in swsusp_arch_resume(). Mark swsusp_arch_resume() as __nocfi to disable the CFI check. [1] [ 22.991934][ T1] Unable to handle kernel paging request at virtual address 0000000109170ffc [ 22.991934][ T1] Mem abort info: [ 22.991934][ T1] ESR = 0x0000000096000007 [ 22.991934][ T1] EC = 0x25: DABT (current EL), IL = 32 bits [ 22.991934][ T1] SET = 0, FnV = 0 [ 22.991934][ T1] EA = 0, S1PTW = 0 [ 22.991934][ T1] FSC = 0x07: level 3 translation fault [ 22.991934][ T1] Data abort info: [ 22.991934][ T1] ISV = 0, ISS = 0x00000007, ISS2 = 0x00000000 [ 22.991934][ T1] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 22.991934][ T1] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 22.991934][ T1] [0000000109170ffc] user address but active_mm is swapper [ 22.991934][ T1] Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP [ 22.991934][ T1] Dumping ftrace buffer: [ 22.991934][ T1] (ftrace buffer empty) [ 22.991934][ T1] Modules linked in: [ 22.991934][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.6.98-android15-8-g0b1d2aee7fc3-dirty-4k #1 688c7060a825a3ac418fe53881730b355915a419 [ 22.991934][ T1] Hardware name: Unisoc UMS9360-base Board (DT) [ 22.991934][ T1] pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 22.991934][ T1] pc : swsusp_arch_resume+0x2ac/0x344 [ 22.991934][ T1] lr : swsusp_arch_resume+0x294/0x344 [ 22.991934][ T1] sp : ffffffc08006b960 [ 22.991934][ T1] x29: ffffffc08006b9c0 x28: 0000000000000000 x27: 0000000000000000 [ 22.991934][ T1] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000820 [ 22.991934][ T1] x23: ffffffd0817e3000 x22: ffffffd0817e3000 x21: 0000000000000000 [ 22.991934][ T1] x20: ffffff8089171000 x19: ffffffd08252c8c8 x18: ffffffc080061058 [ 22.991934][ T1] x17: 00000000529c6ef0 x16: 00000000529c6ef0 x15: 0000000000000004 [ 22.991934][ T1] x14: ffffff8178c88000 x13: 0000000000000006 x12: 0000000000000000 [ 22.991934][ T1] x11: 0000000000000015 x10: 0000000000000001 x9 : ffffffd082533000 [ 22.991934][ T1] x8 : 0000000109171000 x7 : 205b5d3433393139 x6 : 392e32322020205b [ 22.991934][ T1] x5 : 000000010916f000 x4 : 000000008164b000 x3 : ffffff808a4e0530 [ 22.991934][ T1] x2 : ffffffd08058e784 x1 : 0000000082326000 x0 : 000000010a283000 [ 22.991934][ T1] Call trace: [ 22.991934][ T1] swsusp_arch_resume+0x2ac/0x344 [ 22.991934][ T1] hibernation_restore+0x158/0x18c [ 22.991934][ T1] load_image_and_restore+0xb0/0xec [ 22.991934][ T1] software_resume+0xf4/0x19c [ 22.991934][ T1] software_resume_initcall+0x34/0x78 [ 22.991934][ T1] do_one_initcall+0xe8/0x370 [ 22.991934][ T1] do_initcall_level+0xc8/0x19c [ 22.991934][ T1] do_initcalls+0x70/0xc0 [ 22.991934][ T1] do_basic_setup+0x1c/0x28 [ 22.991934][ T1] kernel_init_freeable+0xe0/0x148 [ 22.991934][ T1] kernel_init+0x20/0x1a8 [ 22.991934][ T1] ret_from_fork+0x10/0x20 [ 22.991934][ T1] Code: a9400a61 f94013e0 f9438923 f9400a64 (b85fc110) Co-developed-by: Jeson Gao <jeson.gao@unisoc.com> Signed-off-by: Jeson Gao <jeson.gao@unisoc.com> Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com> Acked-by: Will Deacon <will@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: <stable@vger.kernel.org> [catalin.marinas@arm.com: commit log updated by Mark Rutland] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2026-01-30 10:28:45 +01:00
arch	arm64: Set __nocfi on swsusp_arch_resume()	2026-01-30 10:28:45 +01:00
block	block: fix NULL pointer dereference in blk_zone_reset_all_bio_endio()	2026-01-08 10:15:06 +01:00
certs	sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3	2024-09-20 19:52:48 +03:00
crypto	crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec	2026-01-30 10:28:39 +01:00
Documentation	fou: Don't allow 0 for FOU_ATTR_IPPROTO.	2026-01-30 10:28:39 +01:00
drivers	wifi: rsi: Fix memory corruption due to not set vif driver data size	2026-01-30 10:28:45 +01:00
fs	btrfs: fix missing fields in superblock backup with BLOCK_GROUP_TREE	2026-01-30 10:28:37 +01:00
include	comedi: Fix getting range information for subdevices 16 to 255	2026-01-30 10:28:40 +01:00
init	init: handle bootloader identifier in kernel parameters	2025-10-19 16:33:50 +02:00
io_uring	io_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop	2026-01-30 10:28:41 +01:00
ipc	ipc: fix to protect IPCS lookups using RCU	2025-06-27 11:11:22 +01:00
kernel	sched/fair: Fix pelt clock sync when entering idle	2026-01-30 10:28:42 +01:00
lib	lib/buildid: use __kernel_read() for sleepable context	2026-01-23 11:18:43 +01:00
LICENSES	LICENSES: add 0BSD license text	2024-09-01 20:43:24 -07:00
mm	mm/rmap: fix two comments related to huge_pmd_unshare()	2026-01-30 10:28:41 +01:00
net	net/sched: act_ife: avoid possible NULL deref	2026-01-30 10:28:43 +01:00
rust	rust: kbuild: workaround `rustdoc` doctests modifier bug	2025-11-24 10:36:07 +01:00
samples	samples/ftrace: Adjust LoongArch register restore order in direct calls	2026-01-08 10:14:50 +01:00
scripts	kconfig: fix static linking of nconf	2026-01-30 10:28:41 +01:00
security	keys/trusted_keys: fix handle passed to tpm_buf_append_name during unseal	2026-01-30 10:28:44 +01:00
sound	ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()	2026-01-30 10:28:45 +01:00
tools	vsock/test: fix seqpacket message bounds test	2026-01-30 10:28:43 +01:00
usr	kbuild: uapi: Strip comments before size type check	2025-11-13 15:34:35 -05:00
virt	KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot	2026-01-08 10:14:21 +01:00
.clang-format	clang-format: Update with v6.11-rc1's `for_each` macro list	2024-08-02 13:20:31 +02:00
.clippy.toml	rust: give Clippy the minimum supported Rust version	2025-08-01 09:48:44 +01:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.editorconfig	.editorconfig: remove trim_trailing_whitespace option	2024-06-13 16:47:52 +02:00
.get_maintainer.ignore	Add Jeff Kirsher to .get_maintainer.ignore	2024-03-08 11:36:54 +00:00
.gitattributes	.gitattributes: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	rust: introduce `.clippy.toml`	2025-03-13 13:01:42 +01:00
.mailmap	mailmap: add entry for Thorsten Blum	2024-11-07 14:14:59 -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: Remove self from DSA entry	2024-11-03 12:52:38 -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	staging: rtl8712: Remove driver using deprecated API wext	2025-12-07 06:25:02 +09:00
Makefile	Linux 6.12.67	2026-01-23 11:18:52 +01:00
README	README: Fix spelling	2024-03-18 03:36:32 -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 reStructuredText 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.