Borislav Petkov d72e720a19 scripts/decodecode: add the capability to supply the program counter ... So that comparing with objdump output from vmlinux can ease pinpointing where the trapping instruction actually is. An example is better than a thousand words: $ PC=0xffffffff8329a927 ./scripts/decodecode < ~/tmp/syz/gfs2.splat [ 477.379104][T23917] Code: 48 83 ec 28 48 89 3c 24 48 89 54 24 08 e8 c1 b4 4a fe 48 8d bb 00 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 97 05 00 00 48 8b 9b 00 01 00 00 48 85 db 0f 84 All code ======== ffffffff8329a8fd: 48 83 ec 28 sub $0x28,%rsp ffffffff8329a901: 48 89 3c 24 mov %rdi,(%rsp) ffffffff8329a905: 48 89 54 24 08 mov %rdx,0x8(%rsp) ffffffff8329a90a: e8 c1 b4 4a fe callq 0xffffffff81745dd0 ffffffff8329a90f: 48 8d bb 00 01 00 00 lea 0x100(%rbx),%rdi ffffffff8329a916: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax ffffffff8329a91d: fc ff df ffffffff8329a920: 48 89 fa mov %rdi,%rdx ffffffff8329a923: 48 c1 ea 03 shr $0x3,%rdx ffffffff8329a927:* 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction ffffffff8329a92b: 0f 85 97 05 00 00 jne 0xffffffff8329aec8 ffffffff8329a931: 48 8b 9b 00 01 00 00 mov 0x100(%rbx),%rbx ffffffff8329a938: 48 85 db test %rbx,%rbx ffffffff8329a93b: 0f .byte 0xf ffffffff8329a93c: 84 .byte 0x84 Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Marc Zyngier <maz@misterjones.org> Cc: Will Deacon <will@kernel.org> Cc: Rabin Vincent <rabin@rab.in> Link: https://lkml.kernel.org/r/20200930111416.GF6810@zn.tnic Link: https://lkml.kernel.org/r/20200929113238.GC21110@zn.tnic Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2020-10-13 18:38:26 -07:00
..
atomic	Merge branch 'kcsan' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into locking/core	2020-10-09 08:56:02 +02:00
basic	kbuild: introduce hostprogs-always-y and userprogs-always-y	2020-08-10 01:32:59 +09:00
coccinelle	scripts: device_attr_show.cocci: update location of sysfs doc	2020-09-10 10:47:52 -06:00
dtc	scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting	2020-09-29 15:48:08 -05:00
dummy-tools	kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig	2020-04-09 00:13:45 +09:00
gcc-plugins	Kbuild updates for v5.9	2020-08-09 14:10:26 -07:00
gdb	scripts/gdb: fix python 3.8 SyntaxWarning	2020-08-12 10:58:02 -07:00
genksyms	genksyms: keywords: Use __restrict not _restrict	2020-08-18 20:16:46 +09:00
kconfig	kconfig: qconf: revive help message in the info view	2020-09-20 12:58:54 +09:00
ksymoops
mod	Kbuild updates for v5.9	2020-08-09 14:10:26 -07:00
package	kbuild: Replace HTTP links with HTTPS ones	2020-08-10 01:32:59 +09:00
selinux	Kbuild updates for v5.9	2020-08-09 14:10:26 -07:00
tracing
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
adjust_autoksyms.sh	kbuild: split adjust_autoksyms.sh in two parts	2020-03-03 20:49:21 +09:00
asn1_compiler.c
bin2c.c
bloat-o-meter	scripts/bloat-o-meter: Support comparing library archives	2020-08-07 11:33:21 -07:00
bootgraph.pl
bpf_helpers_doc.py	bpf: Introduce SK_LOOKUP program type with a dedicated attach point	2020-07-17 20:18:16 -07:00
cc-can-link.sh
check_extable.sh
check-sysctl-docs	docs: add a script to check sysctl docs	2020-02-25 03:35:16 -07:00
checkincludes.pl
checkkconfigsymbols.py	kconfig: remove '---help---' support	2020-08-14 13:30:03 +09:00
checkpatch.pl	checkpatch: fix the usage of capture group ( ... )	2020-09-05 12:14:29 -07:00
checkstack.pl	scripts/checkstack.pl: fix arm sp regex	2020-05-26 00:03:16 +09:00
checksyscalls.sh
checkversion.pl
clang-version.sh
cleanfile
cleanpatch
coccicheck
config	scripts/config: allow colons in option strings for sed	2020-04-23 01:10:16 +09:00
const_structs.checkpatch	const_structs.checkpatch: add regulator_ops	2020-08-07 11:33:21 -07:00
decode_stacktrace.sh	scripts/decode_stacktrace.sh: guess path to vmlinux by release name	2020-08-07 11:33:21 -07:00
decodecode	scripts/decodecode: add the capability to supply the program counter	2020-10-13 18:38:26 -07:00
depmod.sh
diffconfig
documentation-file-ref-check	scripts: documentation-file-ref-check: Add line break before exit	2020-04-15 15:13:13 -06:00
export_report.pl	modpost: move the namespace field in Module.symvers last	2020-03-17 08:59:03 +09:00
extract_xc3028.pl
extract-cert.c	extract-cert: add static to local data	2020-08-18 20:16:46 +09:00
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
faddr2line
file-size.sh
find-unused-docs.sh	scripts/find-unused-docs: Fix massive false positives	2020-01-27 14:25:06 -07:00
gcc-goto.sh
gcc-ld
gcc-plugin.sh	gcc-plugins: drop support for GCC <= 4.7	2020-04-09 00:13:45 +09:00
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_autoksyms.sh	kbuild: generate autoksyms.h early	2020-03-03 20:49:21 +09:00
gen_compile_commands.py	gen_compile_commands: lower the entry count threshold	2019-07-27 12:18:19 +09:00
gen_ksymdeps.sh
get_abi.pl
get_dvb_firmware
get_maintainer.pl	get_maintainer: fix unexpected behavior for path/to//file (double slashes)	2020-06-04 19:06:24 -07:00
gfp-translate
headerdep.pl
headers_check.pl
headers_install.sh	Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-08-07 13:29:39 -07:00
insert-sys-cert.c
jobserver-exec	docs, parallelism: Rearrange how jobserver reservations are made	2019-11-22 10:35:18 -07:00
kallsyms.c	scripts/kallsyms: skip ppc compiler stub *.long_branch.* / *.plt_branch.*	2020-09-25 00:41:54 +09:00
Kbuild.include	kbuild: stop filtering out $(GCC_PLUGINS_CFLAGS) from cc-option base	2020-08-10 01:32:59 +09:00
Kconfig.include	kconfig: unify cc-option and as-option	2020-06-17 10:38:42 +09:00
kernel-doc	kernel-doc: add support for ____cacheline_aligned attribute	2020-09-16 12:27:28 -06:00
ld-version.sh
leaking_addresses.pl
Lindent
link-vmlinux.sh	Kbuild updates for v5.9	2020-08-09 14:10:26 -07:00
Makefile	kbuild: introduce hostprogs-always-y and userprogs-always-y	2020-08-10 01:32:59 +09:00
Makefile.asm-generic
Makefile.build	kbuild: sort hostprogs before passing it to ifneq	2020-08-10 01:32:59 +09:00
Makefile.clean	kbuild: introduce hostprogs-always-y and userprogs-always-y	2020-08-10 01:32:59 +09:00
Makefile.dtbinst	kbuild: refactor Makefile.dtbinst more	2020-03-25 10:19:43 +09:00
Makefile.extrawarn	Makefile.extrawarn: Move sign-compare from W=2 to W=3	2020-08-18 01:52:08 +09:00
Makefile.gcc-plugins	gcc-plugins/stackleak: Use asm instrumentation to avoid useless register saving	2020-06-24 07:48:28 -07:00
Makefile.headersinst	kbuild: move headers_check rule to usr/include/Makefile	2019-11-15 00:23:10 +09:00
Makefile.host	kbuild: sort hostprogs before passing it to ifneq	2020-08-10 01:32:59 +09:00
Makefile.kasan	kasan: allow enabling stack tagging for tag-based mode	2020-08-07 11:33:28 -07:00
Makefile.kcov	kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled	2020-08-10 01:32:59 +09:00
Makefile.kcsan	kcsan: Support compounded read-write instrumentation	2020-08-24 15:09:32 -07:00
Makefile.lib	Kbuild updates for v5.9	2020-08-09 14:10:26 -07:00
Makefile.modfinal	kbuild: move modkern_{c,a}flags to Makefile.lib from Makefile.build	2019-08-22 01:14:11 +09:00
Makefile.modinst
Makefile.modpost	kbuild: remove redundant FORCE definition in scripts/Makefile.modpost	2020-08-02 23:09:16 +09:00
Makefile.modsign
Makefile.package	kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables	2020-06-11 20:14:41 +09:00
Makefile.ubsan	kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled	2020-08-10 01:32:59 +09:00
Makefile.userprogs	kbuild: add infrastructure to build userspace programs	2020-05-17 18:52:01 +09:00
makelst
markup_oops.pl
mkcompile_h	kbuild: use CONFIG_CC_VERSION_TEXT to construct LINUX_COMPILER macro	2020-05-12 13:28:33 +09:00
mkmakefile	kbuild: get rid of $(realpath ...) from scripts/mkmakefile	2019-08-29 23:54:29 +09:00
mksysmap	mksysmap: Fix the mismatch of '.L' symbols in System.map	2020-06-06 23:39:20 +09:00
mkuboot.sh
module-common.lds
modules-check.sh	kbuild: make module name conflict fatal error	2020-05-26 00:03:16 +09:00
namespace.pl	namespace: fix namespace.pl script to support relative paths	2019-10-05 15:29:49 +09:00
nsdeps	scripts: add dummy report mode to add_namespace.cocci	2020-07-10 14:19:58 +02:00
objdiff
parse-maintainers.pl	parse-maintainers: Do not sort section content by default	2020-03-26 15:08:27 -07:00
patch-kernel
profile2linkerlist.pl
prune-kernel
recordmcount.c	recordmcount: Fix build failure on non arm64	2020-08-10 15:22:06 +01:00
recordmcount.h	recordmcount: support >64k sections	2020-06-16 21:21:00 -04:00
recordmcount.pl
setlocalversion	scripts: setlocalversion: replace backquote to dollar parenthesis	2019-11-11 20:10:01 +09:00
show_delta
sign-file.c
sorttable.c	s390/kernel: expand exception table logic to allow new handling options	2020-07-20 10:55:50 +02:00
sorttable.h	scripts/sorttable: Implement build-time ORC unwind table sorting	2019-12-13 10:47:58 +01:00
spdxcheck-test.sh
spdxcheck.py
spelling.txt	scripts/spelling.txt: add "arbitrary" typo	2020-10-13 18:38:26 -07:00
sphinx-pre-install	docs: Don't push Sphinx upgrades quite so readily	2020-06-26 09:31:53 -06:00
split-man.pl
stackdelta
stackusage
subarch.include
tags.sh	Merge branch 'locking/urgent' into locking/core, to pick up fixes	2020-10-09 08:55:17 +02:00
tools-support-relr.sh	scripts/tools-support-relr.sh: un-quote variables	2019-11-13 10:52:05 +00:00
unifdef.c
ver_linux	ver_linux: Query ld cache for versions of libc/libcpp run-time	2020-02-10 13:35:15 -08:00
xen-hypercalls.sh
xz_wrap.sh	kbuild: add variables for compression tools	2020-06-06 23:42:01 +09:00