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Alex Sverdlin 800ccd2c6f ARM: 9242/1: kasan: Only map modules if CONFIG_KASAN_VMALLOC=n 
[ Upstream commit 823f606ab6 ]

In case CONFIG_KASAN_VMALLOC=y kasan_populate_vmalloc() allocates the
shadow pages dynamically. But even worse is that kasan_release_vmalloc()
releases them, which is not compatible with create_mapping() of
MODULES_VADDR..MODULES_END range:

BUG: Bad page state in process kworker/9:1  pfn:2068b
page:e5e06160 refcount:0 mapcount:0 mapping:00000000 index:0x0
flags: 0x1000(reserved)
raw: 00001000 e5e06164 e5e06164 00000000 00000000 00000000 ffffffff 00000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
bad because of flags: 0x1000(reserved)
Modules linked in: ip_tables
CPU: 9 PID: 154 Comm: kworker/9:1 Not tainted 5.4.188-... #1
Hardware name: LSI Axxia AXM55XX
Workqueue: events do_free_init
unwind_backtrace
show_stack
dump_stack
bad_page
free_pcp_prepare
free_unref_page
kasan_depopulate_vmalloc_pte
__apply_to_page_range
apply_to_existing_page_range
kasan_release_vmalloc
__purge_vmap_area_lazy
_vm_unmap_aliases.part.0
__vunmap
do_free_init
process_one_work
worker_thread
kthread

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-04-19 17:55:34 +08:00
arch ARM: 9242/1: kasan: Only map modules if CONFIG_KASAN_VMALLOC=n 2023-04-19 17:55:34 +08:00
block blk-wbt: call rq_qos_add() after wb_normal is initialized 2023-04-19 17:55:07 +08:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2023-04-19 17:50:34 +08:00
crypto crypto: akcipher - default implementation for setting a private key 2023-04-19 17:55:27 +08:00
Documentation iio: ABI: Fix wrong format of differential capacitance channel ABI. 2023-04-19 17:55:19 +08:00
drivers drm/amd/display: Remove interface for periodic interrupt 1 2023-04-19 17:55:33 +08:00
fs btrfs: don't print information about space cache or tree every remount 2023-04-19 17:55:34 +08:00
include iommu/iova: Fix module config properly 2023-04-19 17:55:27 +08:00
init stack: Declare {randomize_,}kstack_offset to fix Sparse warnings 2023-04-19 17:52:12 +08:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2023-04-19 17:49:52 +08:00
kernel rcu-tasks: Convert RCU_LOCKDEP_WARN() to WARN_ONCE() 2023-04-19 17:55:29 +08:00
lib dyndbg: drop EXPORTed dynamic_debug_exec_queries 2023-04-19 17:55:21 +08:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm mm/mmap: undo ->mmap() when arch_validate_flags() fails 2023-04-19 17:54:23 +08:00
net Bluetooth: L2CAP: Fix user-after-free 2023-04-19 17:55:32 +08:00
samples samples/landlock: Format with clang-format 2023-04-19 17:50:01 +08:00
scripts kbuild: rpm-pkg: fix breakage when V=1 is used 2023-04-19 17:55:28 +08:00
security ima: fix blocking of security.ima xattrs of unsupported algorithms 2023-04-19 17:55:08 +08:00
sound ASoC: SOF: pci: Change DMI match info to support all Chrome platforms 2023-04-19 17:55:33 +08:00
tools kselftest/arm64: Fix validatation termination record after EXTRA_CONTEXT 2023-04-19 17:55:34 +08:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2023-04-19 17:44:58 +08:00
virt KVM: SEV: add cache flush to solve SEV cache incoherency issues 2023-04-19 17:53:56 +08:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
.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 2023-04-19 17:50:59 +08:00
Makefile hardening: Remove Clang's enable flag for -ftrivial-auto-var-init=zero 2023-04-19 17:54:25 +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.