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
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
adjust_autoksyms.sh
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-sysctl-docs
check_extable.sh
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
checksyscalls.sh
checkversion.pl
clang-version.sh
cleanfile
cleanpatch
coccicheck
config
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
export_report.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
extract_xc3028.pl
faddr2line
file-size.sh
find-unused-docs.sh
gcc-goto.sh
gcc-ld
gcc-plugin.sh
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_autoksyms.sh
gen_compile_commands.py
gen_ksymdeps.sh
get_abi.pl
get_dvb_firmware
get_maintainer.pl
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
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
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
Makefile.extrawarn	Makefile.extrawarn: Move sign-compare from W=2 to W=3	2020-08-18 01:52:08 +09:00
Makefile.gcc-plugins
Makefile.headersinst
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
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
Makefile.ubsan	kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled	2020-08-10 01:32:59 +09:00
Makefile.userprogs
makelst
markup_oops.pl
mkcompile_h
mkmakefile
mksysmap
mkuboot.sh
module-common.lds
modules-check.sh
namespace.pl
nsdeps	scripts: add dummy report mode to add_namespace.cocci	2020-07-10 14:19:58 +02:00
objdiff
parse-maintainers.pl
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.pl
setlocalversion
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
spdxcheck-test.sh
spdxcheck.py
spelling.txt	scripts/spelling.txt: add "arbitrary" typo	2020-10-13 18:38:26 -07:00
sphinx-pre-install
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
unifdef.c
ver_linux
xen-hypercalls.sh
xz_wrap.sh