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Suren Baghdasaryan 0db6f8d782 alloc_tag: load module tags into separate contiguous memory 
When a module gets unloaded there is a possibility that some of the
allocations it made are still used and therefore the allocation tags
corresponding to these allocations are still referenced.  As such, the
memory for these tags can't be freed.  This is currently handled as an
abnormal situation and module's data section is not being unloaded.  To
handle this situation without keeping module's data in memory, allow
codetags with longer lifespan than the module to be loaded into their own
separate memory.  The in-use memory areas and gaps after module unloading
in this separate memory are tracked using maple trees.  Allocation tags
arrange their separate memory so that it is virtually contiguous and that
will allow simple allocation tag indexing later on in this patchset.  The
size of this virtually contiguous memory is set to store up to 100000
allocation tags.

[surenb@google.com: fix empty codetag module section handling]
  Link: https://lkml.kernel.org/r/20241101000017.3856204-1-surenb@google.com
[akpm@linux-foundation.org: update comment, per Dan]
Link: https://lkml.kernel.org/r/20241023170759.999909-4-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Daniel Gomez <da.gomez@samsung.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: David Rientjes <rientjes@google.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Minchan Kim <minchan@google.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Petr Pavlu <petr.pavlu@suse.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: Sourav Panda <souravpanda@google.com>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Xiongwei Song <xiongwei.song@windriver.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-11-07 14:25:16 -08:00
..
atomic locking/atomic: scripts: fix ${atomic}_sub_and_test() kerneldoc 2024-06-05 15:52:34 +02:00
basic fixdep: use xmalloc() 2024-09-01 20:34:49 +09:00
clang-tools gen_compile_commands: fix invalid escape sequence warning 2024-02-15 06:57:19 +09:00
coccinelle Reduce Coccinelle choices in string_choices.cocci 2024-09-28 21:33:11 +02:00
dtc dt: dt-extract-compatibles: Extract compatibles from function parameters 2024-09-05 10:17:03 -05:00
dummy-tools kbuild: dummy-tools: pretend we understand -fpatchable-function-entry 2023-11-01 23:24:56 +09:00
gcc-plugins gcc-plugins: randstruct: Remove GCC 4.7 or newer requirement 2024-08-05 14:34:23 -07:00
gdb scripts/gdb: add 'lx-kasan_mem_to_shadow' command 2024-09-01 20:43:29 -07:00
genksyms kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
include scripts: import more list macros 2024-10-07 02:12:27 +09:00
ipe scripts: add boot policy generation program 2024-08-20 14:03:39 -04:00
kconfig kconfig: show sub-menu entries even if the prompt is hidden 2024-10-31 21:42:20 +09:00
ksymoops
mod modpost: fix input MODULE_DEVICE_TABLE() built for 64-bit on 32-bit host 2024-11-03 23:58:56 +09:00
package kbuild: deb-pkg: add pkg.linux-upstream.nokerneldbg build profile 2024-10-31 21:41:02 +09:00
selinux selinux: remove runtime disable message in the install_policy.sh script 2022-09-20 14:12:25 -04:00
tracing tracing: Always use canonical ftrace path 2023-02-18 14:34:09 -05:00
.gitignore rust: support running Rust documentation tests as KUnit ones 2023-07-19 09:32:53 -06:00
as-version.sh kbuild: Update assembler calls to use proper flags and language target 2023-01-26 12:41:38 +09:00
asn1_compiler.c ASN.1: Fix check for strdup() success 2023-04-21 08:58:00 -07:00
bloat-o-meter scripts/bloat-o-meter: count weak symbol sizes 2023-08-21 13:46:25 -07:00
bootgraph.pl
bpf_doc.py scripts/bpf_doc: Use silent mode when exec make cmd 2024-03-15 14:46:31 +01:00
build-version kbuild: move init/build-version to scripts/ 2024-07-16 01:08:37 +09:00
cc-can-link.sh
cc-version.sh scripts: Remove ICC-related dead code 2023-04-24 10:18:32 -07:00
check_extable.sh scripts: check_extable: fix typo in user error message 2021-09-08 11:50:28 -07:00
check-git kbuild: use git-archive for source package creation 2023-03-16 22:46:12 +09:00
check-sysctl-docs scripts: check-sysctl-docs: handle per-namespace sysctls 2024-02-23 12:13:09 +01:00
check-uapi.sh check-uapi: Introduce check-uapi.sh 2023-12-29 22:25:20 +09:00
check-variable-fonts.sh docs: scripts/check-variable-fonts.sh: Improve commands for detection 2024-05-02 10:14:52 -06:00
checkdeclares.pl scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
checkincludes.pl
checkkconfigsymbols.py scripts: handle BrokenPipeError for python scripts 2023-01-26 12:43:33 +09:00
checkpatch.pl net: drop special comment style 2024-08-23 10:21:02 +01:00
checkstack.pl scripts/checkstack.pl: fix no space expression between sp and offset 2023-12-29 12:22:28 -08:00
checksyscalls.sh checksyscalls: ignore fstat to silence build warning on LoongArch 2023-03-23 17:18:32 -07:00
checktransupdate.py scripts: fix all issues reported by pylint 2024-07-29 15:34:22 -06:00
checkversion.pl scripts: checkversion: modernize linux/version.h search strings 2021-08-05 20:55:39 +09:00
cleanfile
cleanpatch
coccicheck scripts: coccicheck: Use /usr/bin/env 2023-02-25 20:11:06 +01:00
config kconfig: config script: add a little user help 2021-01-04 10:38:11 +09:00
const_structs.checkpatch sound updates for 6.11-rc1 2024-07-19 12:39:34 -07:00
decode_stacktrace.sh scripts/decode_stacktrace.sh: add '-h' flag 2024-09-01 20:43:41 -07:00
decodecode scripts/decodecode: add support for LoongArch 2023-12-29 12:22:25 -08:00
depmod.sh kbuild: move depmod rule to scripts/Makefile.modinst 2023-08-29 22:38:23 +09:00
dev-needs.sh
diffconfig scripts: handle BrokenPipeError for python scripts 2023-01-26 12:43:33 +09:00
documentation-file-ref-check scripts: documentation-file-ref-check: fix bpf selftests path 2021-10-26 09:42:29 -06:00
export_report.pl
extract_xc3028.pl
extract-ikconfig scripts/extract-ikconfig: add zstd compression support 2022-08-29 13:58:47 +09:00
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
faddr2line scripts/faddr2line: Check only two symbols when calculating symbol size 2024-07-02 23:38:37 -07:00
file-size.sh
find-unused-docs.sh
gcc-x86_32-has-stack-protector.sh kbuild: Fix '-S -c' in x86 stack protector scripts 2024-07-29 03:47:00 +09:00
gcc-x86_64-has-stack-protector.sh kbuild: Fix '-S -c' in x86 stack protector scripts 2024-07-29 03:47:00 +09:00
gen-randstruct-seed.sh randstruct: Move seed generation into scripts/basic/ 2022-05-08 01:33:07 -07:00
generate_builtin_ranges.awk kbuild: generate offset range data for builtin modules 2024-09-20 09:21:43 +09:00
generate_initcall_order.pl init: lto: ensure initcall ordering 2021-01-14 08:21:09 -08:00
generate_rust_analyzer.py rust: Support latest version of rust-analyzer 2024-08-07 01:16:52 +02:00
generate_rust_target.rs kbuild: rust: Enable KASAN support 2024-09-16 18:04:37 +02:00
get_abi.pl scripts/get_abi.pl: ignore some temp files 2024-01-03 14:02:17 -07:00
get_dvb_firmware
get_feat.pl scripts: get_feat.pl: use /usr/bin/env to find perl 2022-06-30 12:22:17 -06:00
get_maintainer.pl get_maintainer: add --bug option to print bug reporting info 2024-08-26 16:10:12 -06:00
gfp-translate scripts: fix gfp-translate after ___GFP_*_BITS conversion to an enum 2024-09-01 17:59:01 -07:00
git.orderFile scripts: Introduce a default git.orderFile 2023-12-29 22:25:20 +09:00
head-object-list.txt powerpc: Remove core support for 40x 2024-06-28 22:28:47 +10:00
headerdep.pl
headers_install.sh m68k: Avoid CONFIG_COLDFIRE switch in uapi header 2024-05-07 08:55:23 +10:00
insert-sys-cert.c
install.sh kbuild: Create INSTALL_PATH directory if it does not exist 2024-07-20 13:34:54 +09:00
jobserver-exec scripts: support GNU make 4.4 in jobserver-exec 2023-01-16 20:15:20 +09:00
kallsyms.c kallsyms: change overflow variable to bool type 2024-09-20 09:21:52 +09:00
Kbuild.include kbuild: raise the minimum GNU Make requirement to 4.0 2024-07-16 16:07:14 +09:00
Kconfig.include kbuild: rust: add CONFIG_RUSTC_LLVM_VERSION 2024-10-13 22:22:28 +02:00
kernel-doc mm/slab: Plumb kmem_buckets into __do_kmalloc_node() 2024-07-03 12:24:19 +02:00
ld-version.sh kbuild: Make ld-version.sh more robust against version string changes 2024-07-15 03:13:32 +09:00
leaking_addresses.pl leaking_addresses: Provide mechanism to scan binary files 2024-02-29 13:38:03 -08:00
Lindent
link-vmlinux.sh Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00
macro_checker.py scripts: add macro_checker script to check unused parameters in macros 2024-09-01 20:43:28 -07:00
make_fit.py scripts/make_fit: Support decomposing DTBs 2024-07-16 01:08:37 +09:00
Makefile scripts: add boot policy generation program 2024-08-20 14:03:39 -04:00
Makefile.asm-headers kbuild: fix rebuild of generic syscall headers 2024-07-18 10:01:55 -07:00
Makefile.btf kbuild,bpf: Add module-specific pahole flags for distilled base BTF 2024-06-21 14:45:07 -07:00
Makefile.build Rust changes for v6.12 2024-09-25 10:25:40 -07:00
Makefile.clang Kbuild updates for v6.5 2023-07-01 09:24:31 -07:00
Makefile.clean kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
Makefile.compiler kbuild: fix issues with rustc-option 2024-10-10 22:34:41 +02:00
Makefile.debug kbuild: rust: use -Zdebuginfo-compression 2024-04-02 17:41:22 +02:00
Makefile.defconf kbuild: defconf: use SRCARCH to find merged configs 2024-01-28 01:13:37 +09:00
Makefile.dtbinst kbuild: Install dtb files as 0644 in Makefile.dtbinst 2024-06-26 00:18:57 +09:00
Makefile.dtbs kbuild: move non-boot built-in DTBs to .rodata section 2024-09-30 20:42:52 +09:00
Makefile.extrawarn kbuild: enable -Wcast-function-type-strict unconditionally 2024-05-19 14:36:16 -07:00
Makefile.gcc-plugins gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file 2022-08-16 12:25:53 -07:00
Makefile.headersinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.host kbuild: add intermediate targets for Flex/Bison in scripts/Makefile.host 2024-09-08 12:15:46 +09:00
Makefile.kasan kbuild: rust: Enable KASAN support 2024-09-16 18:04:37 +02:00
Makefile.kcov
Makefile.kcsan kcsan: Ignore GCC 11+ warnings about TSan runtime support 2021-12-09 16:42:27 -08:00
Makefile.kmsan kmsan: add KMSAN runtime core 2022-10-03 14:03:19 -07:00
Makefile.lib Rust changes for v6.12 2024-09-25 10:25:40 -07:00
Makefile.modfinal kbuild: remove append operation on cmd_ld_ko_o 2024-09-20 09:21:53 +09:00
Makefile.modinst Modules changes for v6.12-rc1 2024-09-28 09:06:15 -07:00
Makefile.modpost Kbuild updates for v6.10 2024-05-18 12:39:20 -07:00
Makefile.package kbuild: rpm-pkg: disable kernel-devel package when cross-compiling 2024-10-31 21:40:46 +09:00
Makefile.randstruct randstruct: Enable Clang support 2022-05-08 01:33:07 -07:00
Makefile.ubsan ubsan: Reintroduce signed overflow sanitizer 2024-02-20 20:44:49 -08:00
Makefile.userprogs kbuild: support 'userldlibs' syntax 2023-11-01 23:26:01 +09:00
Makefile.vdsoinst more s390 updates for 6.10 merge window 2024-05-21 12:09:36 -07:00
Makefile.vmlinux kbuild: generate offset range data for builtin modules 2024-09-20 09:21:43 +09:00
Makefile.vmlinux_o kbuild: generate offset range data for builtin modules 2024-09-20 09:21:43 +09:00
makelst
markup_oops.pl
min-tool-version.sh rust: upgrade to Rust 1.78.0 2024-05-05 20:17:25 +02:00
misc-check kbuild: make W=1 warn files that are tracked but ignored by git 2023-01-22 23:43:33 +09:00
mkcompile_h Revert "kbuild: Make scripts/compile.h when sh != bash" 2022-09-29 04:40:15 +09:00
mksysmap kbuild: change scripts/mksysmap into sed script 2024-05-29 16:40:03 +09:00
mkuboot.sh
module-common.c kbuild: compile constant module information only once 2024-09-07 17:24:08 +09:00
module.lds.S alloc_tag: load module tags into separate contiguous memory 2024-11-07 14:25:16 -08:00
modules-check.sh kbuild: change module.order to list *.o instead of *.ko 2022-12-14 15:42:40 +09:00
nsdeps scripts/nsdeps: adjust to the format change of *.mod files 2022-06-08 20:14:13 +09:00
objdiff kbuild: clean .tmp_* pattern by make clean 2022-06-05 06:20:57 +09:00
objdump-func scripts/objdump-func: Support multiple functions 2023-04-14 16:08:28 +02:00
orc_hash.sh x86/unwind/orc: Add ELF section with ORC version identifier 2023-06-16 17:17:42 +02:00
pahole-version.sh kbuild: Add CONFIG_PAHOLE_VERSION 2022-02-02 11:19:33 +01:00
parse-maintainers.pl
patch-kernel
profile2linkerlist.pl
prune-kernel scripts/prune-kernel: Use kernel-install if available 2022-05-11 21:46:38 +09:00
recordmcount.c scripts: clean up IA-64 code 2023-12-03 18:51:48 +09:00
recordmcount.h recordmcount: Correct st_shndx handling 2021-06-18 09:09:17 -04:00
recordmcount.pl riscv: remove MCOUNT_NAME workaround 2024-02-22 15:38:54 -08:00
relocs_check.sh powerpc: Move script to check relocations at compile time in scripts/ 2023-04-19 07:46:31 -07:00
remove-stale-files fortify: refactor test_fortify Makefile to fix some build problems 2024-08-15 09:26:02 -07:00
rust_is_available_bindgen_0_66.h rust: warn about bindgen versions 0.66.0 and 0.66.1 2024-07-10 10:28:52 +02:00
rust_is_available_bindgen_libclang.h scripts: add rust_is_available.sh 2022-09-28 09:02:06 +02:00
rust_is_available_test.py rust: warn about bindgen versions 0.66.0 and 0.66.1 2024-07-10 10:28:52 +02:00
rust_is_available.sh rust: warn about bindgen versions 0.66.0 and 0.66.1 2024-07-10 10:28:52 +02:00
rustc-llvm-version.sh kbuild: rust: avoid errors with old rustcs without LLVM patch version 2024-10-28 00:27:16 +01:00
rustc-version.sh kbuild: rust: add CONFIG_RUSTC_VERSION 2024-09-05 22:44:18 +02:00
rustdoc_test_builder.rs rust: support running Rust documentation tests as KUnit ones 2023-07-19 09:32:53 -06:00
rustdoc_test_gen.rs rust: support running Rust documentation tests as KUnit ones 2023-07-19 09:32:53 -06:00
setlocalversion scripts/setlocalversion: also consider annotated tags of the form vx.y.z-${file_localversion} 2023-08-08 01:08:54 +09:00
show_delta scripts/show_delta: add __main__ judgement before main code 2023-10-18 14:43:23 -07:00
sign-file.c sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
sorttable.c LoongArch: extable: Add type and data fields 2022-12-14 08:36:11 +08:00
sorttable.h x86,objtool: Split UNWIND_HINT_EMPTY in two 2023-03-23 23:18:58 +01:00
spdxcheck-test.sh docs: move Linux logo into a new images folder 2022-06-01 09:32:45 -06:00
spdxcheck.py scripts/spdxcheck: Add count of missing files to stats output 2024-05-04 19:00:54 +02:00
spdxexclude scripts/spdxcheck: Exclude top-level README 2022-05-18 15:35:42 +02:00
spelling.txt kernel-wide: fix spelling mistakes like "assocative" -> "associative" 2024-06-28 19:36:28 -07:00
sphinx-pre-install scripts: sphinx-pre-install: remove unnecessary double check for $cur_version 2024-09-05 14:32:36 -06:00
split-man.pl tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
ssl-common.h sign-file,extract-cert: avoid using deprecated ERR_get_error_line() 2024-09-20 19:49:52 +03:00
stackdelta
stackusage
subarch.include scripts: subarch.include: fix SUBARCH on macOS hosts 2024-09-10 13:56:37 +09:00
syscall.tbl syscalls: add back legacy __NR_nfsservctl macro 2024-08-06 08:57:02 +02:00
syscallhdr.sh scripts: check duplicated syscall number in syscall table 2021-07-09 04:00:39 +09:00
syscallnr.sh scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
syscalltbl.sh x86/syscall: Mark exit[_group] syscall handlers __noreturn 2024-06-28 15:23:38 +02:00
tags.sh scripts/tags.sh: remove find_sources 2024-01-04 17:01:15 +01:00
tools-support-relr.sh Makefile: use -z pack-relative-relocs 2023-04-17 11:23:06 +09:00
unifdef.c scripts/unifdef: avoid constexpr keyword 2024-04-23 00:09:41 +09:00
ver_linux Removed the oprofiled version option 2021-05-03 17:23:06 -06:00
verify_builtin_ranges.awk scripts: add verifier script for builtin module range data 2024-09-20 09:21:52 +09:00
xen-hypercalls.sh scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
xz_wrap.sh xz: adjust arch-specific options for better kernel compression 2024-09-01 20:43:27 -07:00