Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Danesh Petigara 2f397d4f68 ANDROID: recordmcount: avoid STT_FILE as base for mcount offset relocation ... This problem was observed with a kernel built using clang and LTO. When the section header index of a section that contains mcount calls coincides with SHN_ABS, recordmcount ends up selecting a STT_FILE symbol as the base for mcount offset relocation. Since the STT_FILE symbol value is 0, it's not a suitable candidate as the base for relocation and results in the __mcount_loc table containing an invalid entry causing kernel oops in ftrace_init(): [ 0.000000] ftrace: allocating 45789 entries in 179 pages [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at arch/arm64/kernel/ftrace.c:172 ftrace_make_nop+0x11c/0x150 [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.4.69-0-1pre+ #1 [ 0.000000] Hardware name: BCM972180HB_V20 (DT) [ 0.000000] pstate: 20400085 (nzCv daIf +PAN -UAO) [ 0.000000] pc : ftrace_make_nop+0x11c/0x150 [ 0.000000] lr : ftrace_make_nop+0x5c/0x150 [ 0.000000] sp : ffffffc011a43ef0 [ 0.000000] x29: ffffffc011a43f00 x28: 0000000000000001 [ 0.000000] x27: ffffff8027801380 x26: 0000000000000000 [ 0.000000] x25: ffffff8027880008 x24: 0000000000000000 [ 0.000000] x23: 0000000000000000 x22: 0000000000000008 [ 0.000000] x21: ffffffc010f5acdc x20: 0000000000000000 [ 0.000000] x19: 0000000000000020 x18: ffffffc011a79020 [ 0.000000] x17: 000000000000003c x16: 0000000000000022 [ 0.000000] x15: dead000000000100 x14: 0000000000000001 [ 0.000000] x13: 0000000000000000 x12: 0000000000000000 [ 0.000000] x11: 0000000000000000 x10: 0000000008000000 [ 0.000000] x9 : 0000000000000002 x8 : 0000000000000001 [ 0.000000] x7 : 0000000000000000 x6 : 000000000000003f [ 0.000000] x5 : 00000000000235b8 x4 : 0000000000000001 [ 0.000000] x3 : 0000000000000001 x2 : ffffffc010f5acdc [ 0.000000] x1 : ffffff8027880000 x0 : 0000000000000001 [ 0.000000] Call trace: [ 0.000000] ftrace_make_nop+0x11c/0x150 [ 0.000000] ftrace_process_locs+0x338/0x3e0 [ 0.000000] ftrace_init+0xac/0xdc [ 0.000000] start_kernel+0x194/0x43c [ 0.000000] random: get_random_bytes called from __warn+0xe0/0x138 with crng_init=0 [ 0.000000] ---[ end trace a8999690c4edae16 ]--- [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at kernel/trace/ftrace.c:2008 ftrace_bug+0x94/0x268 [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G W 5.4.69-0-1pre+ #1 [ 0.000000] Hardware name: BCM972180HB_V20 (DT) [ 0.000000] pstate: 60400085 (nZCv daIf +PAN -UAO) [ 0.000000] pc : ftrace_bug+0x94/0x268 [ 0.000000] lr : ftrace_process_locs+0x364/0x3e0 [ 0.000000] sp : ffffffc011a43ef0 [ 0.000000] x29: ffffffc011a43ef0 x28: 0000000000000001 [ 0.000000] x27: ffffff8027801380 x26: 0000000000000000 [ 0.000000] x25: ffffff8027880008 x24: 0000000000000000 [ 0.000000] x23: 0000000000000000 x22: 0000000000000008 [ 0.000000] x21: ffffffc010f5acdc x20: 0000000000000020 [ 0.000000] x19: ffffff8027880000 x18: ffffffc011a79020 [ 0.000000] x17: 000000000000003c x16: 0000000000000022 [ 0.000000] x15: dead000000000100 x14: 0000000000000001 [ 0.000000] x13: 0000000000000000 x12: ffffffc010f5ed94 [ 0.000000] x11: ffffffc011a4f000 x10: ffffffc011a4f000 [ 0.000000] x9 : 0000000000000001 x8 : ffffffc011a4f000 [ 0.000000] x7 : 0000000000000000 x6 : 000000000000003f [ 0.000000] x5 : 00000000000235b8 x4 : 0000000000000001 [ 0.000000] x3 : 0000000000000001 x2 : ffffffc010f5acdc [ 0.000000] x1 : ffffff8027880000 x0 : ffffffc01151ade2 [ 0.000000] Call trace: [ 0.000000] ftrace_bug+0x94/0x268 [ 0.000000] ftrace_process_locs+0x364/0x3e0 [ 0.000000] ftrace_init+0xac/0xdc [ 0.000000] start_kernel+0x194/0x43c [ 0.000000] ---[ end trace a8999690c4edae17 ]--- [ 0.000000] ftrace failed to modify [ 0.000000] [<0000000000000020>] 0x20 [ 0.000000] actual: [ 0.000000] Unable to handle kernel read from unreadable memory at virtual address 0000000000000020 [ 0.000000] Mem abort info: [ 0.000000] ESR = 0x96000005 [ 0.000000] EC = 0x25: DABT (current EL), IL = 32 bits [ 0.000000] SET = 0, FnV = 0 [ 0.000000] EA = 0, S1PTW = 0 [ 0.000000] Data abort info: [ 0.000000] ISV = 0, ISS = 0x00000005 [ 0.000000] CM = 0, WnR = 0 [ 0.000000] [0000000000000020] user address but active_mm is swapper [ 0.000000] Internal error: Oops: 96000005 [#1] PREEMPT SMP [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G W 5.4.69-0-1pre+ #1 [ 0.000000] Hardware name: BCM972180HB_V20 (DT) [ 0.000000] pstate: 60400085 (nZCv daIf +PAN -UAO) [ 0.000000] pc : print_ip_ins+0x48/0x80 [ 0.000000] lr : print_ip_ins+0x2c/0x80 [ 0.000000] sp : ffffffc011a43eb0 [ 0.000000] x29: ffffffc011a43eb0 x28: 0000000000000001 [ 0.000000] x27: ffffff8027801380 x26: 0000000000000000 [ 0.000000] x25: ffffff8027880008 x24: 0000000000000000 [ 0.000000] x23: ffffffc0115f1abc x22: ffffffc01160e929 [ 0.000000] x21: 0000000000000000 x20: ffffffc011577a9c [ 0.000000] x19: 0000000000000020 x18: ffffffc011a79028 [ 0.000000] x17: 000000000000002c x16: ffffffc010f33fec [ 0.000000] x15: 0000000000000004 x14: ffff0000ffffff00 [ 0.000000] x13: 0000000000000000 x12: 0000000000000000 [ 0.000000] x11: 0000000000000000 x10: 00000000ffffffff [ 0.000000] x9 : 0000000000000000 x8 : 0000000000000000 [ 0.000000] x7 : 3030303030303030 x6 : ffffffc011c031a3 [ 0.000000] x5 : 000000000000000b x4 : ffffffc011c00866 [ 0.000000] x3 : 0000000000000020 x2 : 000000000000000b [ 0.000000] x1 : ffffffc011c00871 x0 : 000000000000000b [ 0.000000] Call trace: [ 0.000000] print_ip_ins+0x48/0x80 [ 0.000000] ftrace_bug+0xcc/0x268 [ 0.000000] ftrace_process_locs+0x364/0x3e0 [ 0.000000] ftrace_init+0xac/0xdc [ 0.000000] start_kernel+0x194/0x43c [ 0.000000] Code: aa1f03f5 9124a6d6 912af2f7 912a7294 (38756a62) [ 0.000000] ---[ end trace a8999690c4edae18 ]--- [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task! This can be fixed by avoiding STT_FILE symbols as the base for mcount offset relocation. Bug: 168835511 Signed-off-by: Danesh Petigara <danesh.petigara@broadcom.com> Signed-off-by: Pierre Couillaud <pierre@broadcom.com> Change-Id: I9e73706d5104bfa81bccd091e956660364f294de		2020-10-22 19:57:13 +00:00
..
atomic
basic	kbuild: remove unneeded comments and code from scripts/basic/Makefile	2019-08-29 23:54:29 +09:00
coccinelle	scripts: add dummy report mode to add_namespace.cocci	2020-08-11 15:33:35 +02:00
dtc	scripts/dtc: Remove redundant YYLOC global declaration	2020-04-01 11:02:00 +02:00
gcc-plugins	gcc-common.h: Update for GCC 10	2020-05-27 17:46:24 +02:00
gdb	scripts/gdb: fix lx-symbols 'gdb.error' while loading modules	2020-07-29 10:18:35 +02:00
genksyms	genksyms: convert to SPDX License Identifier for lex.l and parse.y	2019-09-14 11:40:13 +09:00
kconfig	kconfig: qconf: fix signal connection to invalid slots	2020-08-26 10:41:04 +02:00
ksymoops
mod	UPSTREAM: scripts: Fix the inclusion order in modpost	2020-04-27 18:37:46 -07:00
package	kbuild/deb-pkg: annotate libelf-dev dependency as :native	2020-01-17 19:49:07 +01:00
selinux
tracing
.gitignore
adjust_autoksyms.sh	FROMLIST: kbuild: split adjust_autoksyms.sh in two parts	2020-02-27 15:13:00 +00:00
asn1_compiler.c
bin2c.c
bloat-o-meter
bootgraph.pl
bpf_helpers_doc.py
cc-can-link.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py
checkpatch.pl	UPSTREAM: update to latest version of scripts/checkpatch.pl	2020-08-14 13:16:17 +02:00
checkstack.pl
checksyscalls.sh
checkversion.pl
clang-android.sh
clang-version.sh
cleanfile
cleanpatch
coccicheck
config	scripts/config: allow colons in option strings for sed	2020-05-10 10:31:27 +02:00
conmakehash.c
const_structs.checkpatch
decode_stacktrace.sh	scripts/decode_stacktrace: strip basepath from all paths	2020-07-29 10:18:35 +02:00
decodecode	scripts/decodecode: fix trapping instruction formatting	2020-05-14 07:58:29 +02:00
depmod.sh
diffconfig
documentation-file-ref-check
export_report.pl	modpost: move the namespace field in Module.symvers last	2020-03-25 08:25:55 +01:00
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
extract_xc3028.pl
faddr2line
file-size.sh
find-unused-docs.sh	scripts/find-unused-docs: Fix massive false positives	2020-02-11 04:35:23 -08:00
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	ANDROID: kbuild: align UNUSED_KSYMS_WHITELIST with upstream	2020-03-10 13:10:27 +00:00
gen_compile_commands.py
gen_ksymdeps.sh
generate_initcall_order.pl	ANDROID: init: ensure initcall ordering with LTO	2019-11-27 12:49:11 -08:00
get_abi.pl
get_dvb_firmware
get_maintainer.pl
gfp-translate
headerdep.pl
headers_check.pl
headers_install.sh	scripts: headers_install: Exit with error on config leak	2020-06-24 17:50:33 +02:00
insert-sys-cert.c
kallsyms.c	ANDROID: kallsyms: increase KSYM_NAME_LEN	2020-08-04 19:33:41 +00:00
Kbuild.include	kbuild: improve cc-option to clean up all temporary files	2020-06-30 15:37:05 -04:00
Kconfig.include	kconfig: introduce m32-flag and m64-flag	2020-04-08 09:08:37 +02:00
kernel-doc	kernel-doc: Allow anonymous enum	2019-08-12 15:00:37 -06:00
ld-version.sh
leaking_addresses.pl
Lindent
link-vmlinux.sh	This is the 5.4.47 stable release	2020-06-18 10:05:17 +02:00
Makefile	ANDROID: kbuild: don't preprocess module-lto.lds	2020-08-19 09:15:50 -07:00
Makefile.asm-generic
Makefile.build	This is the 5.4.24 stable release	2020-03-05 17:42:40 +01:00
Makefile.clean	kbuild: clean up subdir-ymn calculation in Makefile.clean	2019-08-29 23:54:29 +09:00
Makefile.dtbinst
Makefile.extrawarn	kbuild: Disable -Wpointer-to-enum-cast	2020-03-25 08:25:54 +01:00
Makefile.gcc-plugins
Makefile.headersinst	kbuild: move headers_check rule to usr/include/Makefile	2020-03-05 16:43:47 +01:00
Makefile.host	kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)	2019-09-04 23:12:50 +09:00
Makefile.kasan	kasan/arm64: fix CONFIG_KASAN_SW_TAGS && KASAN_INLINE	2019-08-15 13:24:04 +01:00
Makefile.kcov
Makefile.lib	ANDROID: GKI: scripts: Makefile: update the lz4 command (#2)	2020-07-01 19:16:31 +00:00
Makefile.modbuiltin
Makefile.modfinal	ANDROID: kbuild: fix dynamic ftrace with clang LTO	2019-11-27 12:49:10 -08:00
Makefile.modinst
Makefile.modpost	ANDROID: kbuild: add support for Clang LTO	2019-11-27 12:49:10 -08:00
Makefile.modsign
Makefile.package	kbuild: pkg: rename scripts/package/Makefile to scripts/Makefile.package	2019-08-25 07:42:00 +09:00
Makefile.ubsan
makelst
markup_oops.pl
mkcompile_h	UPSTREAM: kbuild: use CONFIG_CC_VERSION_TEXT to construct LINUX_COMPILER macro	2020-09-24 10:02:57 +00:00
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	2020-06-24 17:50:19 +02:00
mkuboot.sh
module-common.lds
module-lto.lds	ANDROID: kbuild: don't preprocess module-lto.lds	2020-08-19 09:15:50 -07:00
modules-check.sh
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	2020-08-11 15:33:35 +02:00
objdiff
parse-maintainers.pl	parse-maintainers: Mark as executable	2020-03-25 08:25:49 +01:00
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c	Revert "ANDROID: Revert: Merge 5.4.60 into android11-5.4"	2020-08-23 13:12:51 +02:00
recordmcount.h	ANDROID: recordmcount: avoid STT_FILE as base for mcount offset relocation	2020-10-22 19:57:13 +00:00
recordmcount.pl
setlocalversion	ANDROID: update the kernel release format for GKI	2020-07-27 22:22:25 +00:00
show_delta
sign-file.c
sortextable.c
sortextable.h
spdxcheck-test.sh
spdxcheck.py
spelling.txt
sphinx-pre-install
split-man.pl
stackdelta
stackusage
subarch.include
tags.sh
tools-support-relr.sh	scripts/tools-support-relr.sh: un-quote variables	2019-11-13 10:52:05 +00:00
unifdef.c
ver_linux
xen-hypercalls.sh
xz_wrap.sh