linux-stable/scripts
Ilya Leoshkevich ff3f7465ee scripts/gdb: fix debugging modules compiled with hot/cold partitioning
[ Upstream commit 8731acc506 ]

gcc's -freorder-blocks-and-partition option makes it group frequently
and infrequently used code in .text.hot and .text.unlikely sections
respectively.  At least when building modules on s390, this option is
used by default.

gdb assumes that all code is located in .text section, and that .text
section is located at module load address.  With such modules this is no
longer the case: there is code in .text.hot and .text.unlikely, and
either of them might precede .text.

Fix by explicitly telling gdb the addresses of code sections.

It might be tempting to do this for all sections, not only the ones in
the white list.  Unfortunately, gdb appears to have an issue, when
telling it about e.g. loadable .note.gnu.build-id section causes it to
think that non-loadable .note.Linux section is loaded at address 0,
which in turn causes NULL pointers to be resolved to bogus symbols.  So
keep using the white list approach for the time being.

Link: http://lkml.kernel.org/r/20191028152734.13065-1-iii@linux.ibm.com
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-12-05 09:19:44 +01:00
..
basic kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
coccinelle fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-05-08 07:21:51 +02:00
dtc scripts/dtc: consolidate include path options in Makefile 2018-08-22 23:21:36 +09:00
gcc-plugins randstruct: Check member structs in is_pure_ops_struct() 2019-10-05 13:10:02 +02:00
gdb scripts/gdb: fix debugging modules compiled with hot/cold partitioning 2019-12-05 09:19:44 +01:00
genksyms genksyms: Teach parser about 128-bit built-in types 2019-07-31 07:27:02 +02:00
kconfig kconfig: Clear "written" flag to avoid data loss 2019-08-06 19:06:53 +02:00
ksymoops
mod modpost: file2alias: check prototype of handler 2019-04-27 09:36:39 +02:00
package kbuild: deb-pkg: fix bindeb-pkg breakage when O= is used 2019-04-17 08:38:45 +02:00
selinux selinux: use kernel linux/socket.h for genheaders and mdp 2019-05-04 09:20:10 +02:00
tracing scripts: Add Python 3 support to tracing/draw_functrace.py 2018-07-29 11:08:38 +09:00
.gitignore kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
adjust_autoksyms.sh kbuild: remove CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX 2018-05-17 22:44:57 +09:00
asn1_compiler.c kbuild: rename *-asn1.[ch] to *.asn1.[ch] 2018-04-07 19:04:02 +09:00
bin2c.c kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
bloat-o-meter syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention 2018-04-09 16:47:28 +02:00
bootgraph.pl
bpf_helpers_doc.py bpf: change eBPF helper doc parsing script to allow for smaller indent 2018-05-17 17:34:43 +02:00
cc-can-link.sh bpfilter: check compiler capability in Kconfig 2018-06-28 13:36:39 +09:00
check_00index.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py
checkpatch.pl checkpatch: add __ro_after_init to known $Attribute 2018-09-04 16:45:02 -07:00
checkstack.pl scripts/checkstack.pl: Fix arm64 wrong or unknown architecture 2019-06-25 11:35:58 +08:00
checksyscalls.sh
checkversion.pl
clang-version.sh kbuild: Add a space after ! to prevent parsing as file pattern 2018-08-22 23:21:40 +09:00
cleanfile
cleanpatch
coccicheck coccicheck: return proper error code on fail 2018-08-14 08:58:56 +09:00
config
conmakehash.c
const_structs.checkpatch
decode_stacktrace.sh scripts/decode_stacktrace: match basepath using shell prefix operator, not regex 2019-09-16 08:21:44 +02:00
decodecode scripts/decodecode: make it take multiline Code line 2018-01-31 17:18:34 -08:00
depmod.sh kbuild: modules_install: warn when missing System.map file 2018-09-09 09:14:07 +09:00
diffconfig
documentation-file-ref-check scripts/documentation-file-ref-check: ignore sched-pelt false positive 2018-07-02 11:25:00 -06:00
export_report.pl
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux scripts: teach extract-vmlinux about LZ4 and ZSTD 2018-07-08 09:32:32 +09:00
extract_xc3028.pl MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
faddr2line scripts/faddr2line: make the new code listing format optional 2018-06-05 09:04:37 -07:00
file-size.sh kbuild: Use ls(1) instead of stat(1) to obtain file size 2018-03-26 02:01:24 +09:00
find-unused-docs.sh
gcc-goto.sh jump_label: move 'asm goto' support test to Kconfig 2019-06-04 08:02:34 +02:00
gcc-ld
gcc-plugin.sh
gcc-version.sh
gcc-x86_32-has-stack-protector.sh stack-protector: test compiler capability in Kconfig and drop AUTO mode 2018-06-08 18:56:00 +09:00
gcc-x86_64-has-stack-protector.sh stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y 2018-06-25 23:21:13 +09:00
get_dvb_firmware
get_maintainer.pl get_maintainer: allow option --mpath <directory> to read all files in <directory> 2018-08-22 10:52:48 -07:00
gfp-translate
headerdep.pl
headers.sh
headers_check.pl
headers_install.sh kbuild: Improve portability of some sed invocations 2018-03-26 02:01:18 +09:00
insert-sys-cert.c
kallsyms.c kallsyms: exclude kasan local symbols on s390 2019-07-31 07:27:05 +02:00
Kbuild.include x86/build: Remove jump label quirk for GCC older than 4.5.2 2018-08-30 11:37:08 +02:00
Kconfig.include kbuild: Check for unknown options with cc-option usage in Kconfig and clang 2019-08-25 10:47:56 +02:00
kernel-doc scripts/kernel-doc: Escape all literal braces in regexes 2018-08-06 13:36:20 -06:00
ld-version.sh
leaking_addresses.pl leaking_addresses: check if file name contains address 2018-04-07 08:50:34 +10:00
Lindent
link-vmlinux.sh kbuild: rename LDFLAGS to KBUILD_LDFLAGS 2018-08-24 08:22:08 +09:00
Makefile kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS 2018-07-18 01:18:05 +09:00
Makefile.asm-generic
Makefile.build x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support 2018-12-05 19:32:01 +01:00
Makefile.clean kbuild: remove deprecated host-progs variable 2018-08-09 21:51:17 +09:00
Makefile.dtbinst
Makefile.extrawarn Kbuild: suppress packed-not-aligned warning for default setting only 2018-01-18 09:37:53 +09:00
Makefile.gcc-plugins gcc-plugins: Regularize Makefile.gcc-plugins 2018-07-24 16:11:07 -07:00
Makefile.headersinst
Makefile.host kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS 2018-07-18 01:18:05 +09:00
Makefile.kasan kasan: rework Kconfig settings 2018-02-06 18:32:47 -08:00
Makefile.kcov kcov: test compiler capability in Kconfig and correct dependency 2018-06-11 09:14:08 +09:00
Makefile.lib kbuild: rename LDFLAGS to KBUILD_LDFLAGS 2018-08-24 08:22:08 +09:00
Makefile.modbuiltin Kbuild: Makefile.modbuiltin: include auto.conf and tristate.conf mandatory 2018-08-03 00:47:00 +09:00
Makefile.modinst kbuild: remove duplicated comments about PHONY 2018-07-06 22:04:03 +09:00
Makefile.modpost kbuild: modpost: handle KBUILD_EXTRA_SYMBOLS only for external modules 2019-08-25 10:47:55 +02:00
Makefile.modsign kbuild: remove duplicated comments about PHONY 2018-07-06 22:04:03 +09:00
Makefile.ubsan lib/ubsan: remove null-pointer checks 2018-08-10 20:19:58 -07:00
makelst
markup_oops.pl
mkcompile_h
mkmakefile
mksysmap
mkuboot.sh
module-common.lds
namespace.pl namespace: fix namespace.pl script to support relative paths 2019-10-29 09:19:36 +01:00
objdiff
parse-maintainers.pl
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c scripts: Fixed printf format mismatch 2018-05-29 22:04:12 +09:00
recordmcount.h recordmcount: Fix spurious mcount entries on powerpc 2019-07-31 07:27:03 +02:00
recordmcount.pl nds32/ftrace: Add RECORD_MCOUNT support 2018-09-04 14:45:18 +08:00
setlocalversion scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks 2019-11-06 13:05:27 +01:00
show_delta
sign-file.c
sortextable.c
sortextable.h
spdxcheck.py scripts/spdxcheck.py: always open files in binary mode 2018-12-19 19:19:50 +01:00
spelling.txt treewide: correct "differenciate" and "instanciate" typos 2018-08-23 18:48:43 -07:00
sphinx-pre-install scripts/sphinx-pre-install: fix script for RHEL/CentOS 2019-08-16 10:12:44 +02:00
split-man.pl MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
stackdelta
stackusage
subarch.include selftests: add headers_install to lib.mk 2018-09-05 08:12:09 -06:00
tags.sh Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-07-18 19:32:54 -07:00
unifdef.c unifdef: use memcpy instead of strncpy 2018-12-08 12:59:06 +01:00
ver_linux ver_linux: Do not check for ver_linux pattern in version function 2018-07-07 17:44:52 +02:00
xen-hypercalls.sh
xz_wrap.sh