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linux-yocto/scripts
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Gregory Herrero 3428843036 recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64. 
commit ea0eada456 upstream.

Currently, if a section has a relocation to '_mcount' symbol, a new
__mcount_loc entry will be added whatever the relocation type is.
This is problematic when a relocation to '_mcount' is in the middle of a
section and is not a call for ftrace use.

Such relocation could be generated with below code for example:
    bool is_mcount(unsigned long addr)
    {
        return (target == (unsigned long) &_mcount);
    }

With this snippet of code, ftrace will try to patch the mcount location
generated by this code on module load and fail with:

    Call trace:
     ftrace_bug+0xa0/0x28c
     ftrace_process_locs+0x2f4/0x430
     ftrace_module_init+0x30/0x38
     load_module+0x14f0/0x1e78
     __do_sys_finit_module+0x100/0x11c
     __arm64_sys_finit_module+0x28/0x34
     el0_svc_common+0x88/0x194
     el0_svc_handler+0x38/0x8c
     el0_svc+0x8/0xc
    ---[ end trace d828d06b36ad9d59 ]---
    ftrace failed to modify
    [<ffffa2dbf3a3a41c>] 0xffffa2dbf3a3a41c
     actual:   66:a9:3c:90
    Initializing ftrace call sites
    ftrace record flags: 2000000
     (0)
    expected tramp: ffffa2dc6cf66724

So Limit the relocation type to R_AARCH64_CALL26 as in perl version of
recordmcount.

Fixes: af64d2aa87 ("ftrace: Add arm64 support to recordmcount")
Signed-off-by: Gregory Herrero <gregory.herrero@oracle.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20200717143338.19302-1-gregory.herrero@oracle.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2020-09-04 10:33:10 -04:00
..
atomic locking/atomics: Don't assume that scripts are executable 2019-04-19 14:21:43 +02:00
basic fixdep: check return value of printf() and putchar() 2019-07-31 07:24:44 +02:00
coccinelle treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505 2019-06-19 17:11:22 +02:00
dtc scripts/dtc: Remove redundant YYLOC global declaration 2020-05-21 19:08:05 -04:00
gcc-plugins gcc-common.h: Update for GCC 10 2020-06-08 13:47:03 -04:00
gdb scripts/gdb: fix lx-symbols 'gdb.error' while loading modules 2020-08-03 14:03:44 -04:00
genksyms genksyms: Teach parser about 128-bit built-in types 2019-07-31 07:24:43 +02:00
kconfig kconfig: qconf: Fix a few alignment issues 2020-06-04 16:26:40 -04:00
ksymoops
mod kbuild: modversions: Fix relative CRC byte order interpretation 2019-03-28 23:46:56 +09:00
package kbuild/deb-pkg: annotate libelf-dev dependency as :native 2020-03-30 20:27:44 -04:00
selinux treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
tracing treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
.gitignore
adjust_autoksyms.sh treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
asn1_compiler.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
bin2c.c
bloat-o-meter
bootgraph.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391 2019-06-05 17:37:11 +02:00
bpf_helpers_doc.py bpf: fix script for generating man page on BPF helpers 2019-05-13 01:12:45 +02:00
cc-can-link.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
checkpatch.pl checkpatch.pl: Update DT vendor prefix check 2019-05-22 14:54:49 -05:00
checkstack.pl scripts/checkstack.pl: Fix arm64 wrong or unknown architecture 2019-06-05 02:33:10 +09:00
checksyscalls.sh checksyscalls: fix up mq_timedreceive and stat exceptions 2019-02-19 21:27:53 +01:00
checkversion.pl
clang-version.sh kbuild: update comment block of scripts/clang-version.sh 2019-03-04 22:34:54 +09:00
cleanfile
cleanpatch
coccicheck
config scripts/config: allow colons in option strings for sed 2020-06-04 16:28:13 -04:00
conmakehash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 54 2019-05-24 17:36:42 +02:00
const_structs.checkpatch
decode_stacktrace.sh scripts/decode_stacktrace: strip basepath from all paths 2020-08-03 14:03:44 -04:00
decodecode scripts/decodecode: fix trapping instruction formatting 2020-06-04 16:28:43 -04:00
depmod.sh
diffconfig
documentation-file-ref-check scripts/documentation-file-ref-check: detect broken :doc:foo 2019-05-03 06:45:22 -06:00
export_report.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209 2019-05-30 11:29:53 -07:00
extract_xc3028.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339 2019-06-05 17:37:07 +02:00
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378 2019-06-05 17:37:10 +02:00
faddr2line
file-size.sh
find-unused-docs.sh scripts/find-unused-docs: Fix massive false positives 2020-05-04 08:43:35 -04:00
gcc-goto.sh jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00
gcc-ld
gcc-plugin.sh
gcc-version.sh kbuild: clean up scripts/gcc-version.sh 2019-03-04 22:35:04 +09:00
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_compile_commands.py gen_compile_commands: lower the entry count threshold 2019-08-16 10:11:08 +02:00
gen_ksymdeps.sh
get_dvb_firmware treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
get_maintainer.pl
gfp-translate treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
headerdep.pl
headers_check.pl
headers_install.sh
headers.sh
insert-sys-cert.c
kallsyms.c scripts/kallsyms: fix definitely-lost memory leak 2020-03-07 18:24:40 -05:00
Kbuild.include kbuild: improve cc-option to clean up all temporary files 2020-07-16 10:19:40 -04:00
Kconfig.include kconfig: introduce m32-flag and m64-flag 2020-06-01 20:25:33 -04:00
kernel-doc kernel-doc: suppress 'not described' warnings for embedded struct fields 2019-01-16 15:04:01 -07:00
ld-version.sh
leaking_addresses.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
Lindent
link-vmlinux.sh bpf, btf: Always output invariant hit in pahole DWARF to BTF transform 2020-05-15 17:16:54 -04:00
Makefile scripts/gdb: do not descend into scripts/gdb from scripts 2019-02-27 21:40:09 +09:00
Makefile.asm-generic kbuild: force all architectures except um to include mandatory-y 2019-03-17 12:56:32 +09:00
Makefile.build Kbuild updates for v5.2 2019-05-08 12:25:12 -07:00
Makefile.clean
Makefile.dtbinst
Makefile.extrawarn kbuild: add all Clang-specific flags unconditionally 2019-05-18 11:49:53 +09:00
Makefile.gcc-plugins gcc-plugins: structleak: Generalize to all variable types 2019-03-04 09:29:41 -08:00
Makefile.headersinst kbuild: generate asm-generic wrappers if mandatory headers are missing 2019-01-06 09:46:51 +09:00
Makefile.host kbuild: remove 'addtree' and 'flags' magic for header search paths 2019-05-18 11:49:57 +09:00
Makefile.kasan kasan/arm64: fix CONFIG_KASAN_SW_TAGS && KASAN_INLINE 2019-10-05 13:13:40 +02:00
Makefile.kcov treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile.lib kbuild: fix DT binding schema rule again to avoid needless rebuilds 2020-05-15 17:18:36 -04:00
Makefile.modbuiltin kbuild: use $(srctree) instead of KBUILD_SRC to check out-of-tree build 2019-04-02 23:28:04 +09:00
Makefile.modinst Revert "modsign: Abort modules_install when signing fails" 2019-03-17 12:56:31 +09:00
Makefile.modpost kbuild: modpost: handle KBUILD_EXTRA_SYMBOLS only for external modules 2019-08-25 10:10:31 -04:00
Makefile.modsign
Makefile.ubsan ubsan: Remove vla bound checks. 2019-05-06 11:12:09 -07:00
makelst
markup_oops.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373 2019-06-05 17:37:10 +02:00
mkcompile_h kbuild: remove unnecessary in-subshell execution 2019-01-28 09:11:17 +09:00
mkmakefile kbuild: mkmakefile: generate a simple wrapper of top Makefile 2019-04-02 23:27:38 +09:00
mksysmap mksysmap: Fix the mismatch of '.L' symbols in System.map 2020-07-13 11:56:00 -04:00
mkuboot.sh
module-common.lds
modules-check.sh kbuild: do not check name uniqueness of builtin modules 2019-05-21 08:54:05 +09:00
namespace.pl namespace: fix namespace.pl script to support relative paths 2019-11-25 11:04:05 -05:00
objdiff treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199 2019-05-30 11:29:23 -07:00
parse-maintainers.pl parse-maintainers: Mark as executable 2020-05-21 19:07:17 -04:00
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64. 2020-09-04 10:33:10 -04:00
recordmcount.h recordmcount: Fix spurious mcount entries on powerpc 2019-07-31 07:24:44 +02:00
recordmcount.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
setlocalversion
show_delta treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 438 2019-06-05 17:37:17 +02:00
sign-file.c
sortextable.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378 2019-06-05 17:37:10 +02:00
sortextable.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378 2019-06-05 17:37:10 +02:00
spdxcheck-test.sh scripts: add spdxcheck.py self test 2018-12-28 12:11:44 -08:00
spdxcheck.py spdxcheck.py: fix directory structures 2019-06-01 15:51:31 -07:00
spelling.txt scripts/spelling.txt: add more spellings to spelling.txt 2019-03-07 18:31:59 -08:00
sphinx-pre-install scripts/sphinx-pre-install: fix latexmk dependencies 2019-08-16 10:10:59 +02:00
split-man.pl
stackdelta
stackusage
subarch.include
tags.sh treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
unifdef.c
ver_linux ver_linux: Assign constant RE to variable name for clarity 2019-01-22 13:34:35 +01:00
xen-hypercalls.sh
xz_wrap.sh