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Date: Wed, 22 Dec 2021 01:14:50 +0800
From: kernel test robot <lkp@...el.com>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Frederic Weisbecker <frederic@...nel.org>
Subject: [frederic-dynticks:preempt/arm-v4 2/5] lib/Kconfig.debug:536:error:
recursive dependency detected!
tree: https://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git preempt/arm-v4
head: 6fc1c7e3d83c4e06b019b041894d9bb25f37ac6c
commit: 44d4846a007823ebf184ef1861a37362a43c6434 [2/5] arm64: implement support for static call trampolines
config: arm64-randconfig-r022-20211220
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6c2bf01270a8a52b7986d5c49eaa7ad1c7083ec5)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git/commit/?id=44d4846a007823ebf184ef1861a37362a43c6434
git remote add frederic-dynticks https://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
git fetch --no-tags frederic-dynticks preempt/arm-v4
git checkout 44d4846a007823ebf184ef1861a37362a43c6434
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 randconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
>> lib/Kconfig.debug:536:error: recursive dependency detected!
lib/Kconfig.debug:536: symbol DEBUG_FS is selected by ZSMALLOC_STAT
mm/Kconfig:705: symbol ZSMALLOC_STAT depends on ZSMALLOC
mm/Kconfig:694: symbol ZSMALLOC is selected by ZSWAP_ZPOOL_DEFAULT_ZSMALLOC
mm/Kconfig:644: symbol ZSWAP_ZPOOL_DEFAULT_ZSMALLOC is part of choice <choice>
mm/Kconfig:618: choice <choice> contains symbol <choice>
mm/Kconfig:618: choice <choice> contains symbol ZSWAP
mm/Kconfig:534: symbol ZSWAP depends on CRYPTO
crypto/Kconfig:16: symbol CRYPTO is selected by SND_SOC_CROS_EC_CODEC
sound/soc/codecs/Kconfig:583: symbol SND_SOC_CROS_EC_CODEC is selected by SND_SOC_AMD_RV_RT5682_MACH
sound/soc/amd/Kconfig:32: symbol SND_SOC_AMD_RV_RT5682_MACH depends on GPIOLIB
drivers/gpio/Kconfig:14: symbol GPIOLIB is selected by CEC_GPIO
drivers/media/cec/platform/Kconfig:43: symbol CEC_GPIO depends on PREEMPTION
kernel/Kconfig.preempt:92: symbol PREEMPTION is selected by PREEMPT_BUILD
kernel/Kconfig.preempt:9: symbol PREEMPT_BUILD is selected by PREEMPT_DYNAMIC
kernel/Kconfig.preempt:96: symbol PREEMPT_DYNAMIC depends on HAVE_PREEMPT_DYNAMIC
arch/Kconfig:1266: symbol HAVE_PREEMPT_DYNAMIC depends on HAVE_STATIC_CALL
arch/Kconfig:1259: symbol HAVE_STATIC_CALL is selected by LTO_CLANG_THIN
arch/Kconfig:697: symbol LTO_CLANG_THIN is part of choice <choice>
arch/Kconfig:663: choice <choice> contains symbol LTO_CLANG_FULL
arch/Kconfig:678: symbol LTO_CLANG_FULL is part of choice HAS_LTO_CLANG
arch/Kconfig:649: symbol HAS_LTO_CLANG depends on GCOV_KERNEL
kernel/gcov/Kconfig:4: symbol GCOV_KERNEL depends on DEBUG_FS
For a resolution refer to Documentation/kbuild/kconfig-language.rst
subsection "Kconfig recursive dependency limitations"
vim +536 lib/Kconfig.debug
6210b6402f582b Changbin Du 2019-12-06 492
6dfc06651b3d29 Dave Hansen 2013-07-01 493 config MAGIC_SYSRQ
6dfc06651b3d29 Dave Hansen 2013-07-01 494 bool "Magic SysRq key"
6dfc06651b3d29 Dave Hansen 2013-07-01 495 depends on !UML
6dfc06651b3d29 Dave Hansen 2013-07-01 496 help
6dfc06651b3d29 Dave Hansen 2013-07-01 497 If you say Y here, you will have some control over the system even
6dfc06651b3d29 Dave Hansen 2013-07-01 498 if the system crashes for example during kernel debugging (e.g., you
6dfc06651b3d29 Dave Hansen 2013-07-01 499 will be able to flush the buffer cache to disk, reboot the system
6dfc06651b3d29 Dave Hansen 2013-07-01 500 immediately or dump some status information). This is accomplished
6dfc06651b3d29 Dave Hansen 2013-07-01 501 by pressing various keys while holding SysRq (Alt+PrintScreen). It
6dfc06651b3d29 Dave Hansen 2013-07-01 502 also works on a serial console (on PC hardware at least), if you
6dfc06651b3d29 Dave Hansen 2013-07-01 503 send a BREAK and then within 5 seconds a command keypress. The
f8998c226587fb Hans Holmberg 2017-03-16 504 keys are documented in <file:Documentation/admin-guide/sysrq.rst>.
f8998c226587fb Hans Holmberg 2017-03-16 505 Don't say Y unless you really know what this hack does.
8446f1d391f3d2 Ingo Molnar 2005-09-06 506
8eaede49dfdc1f Ben Hutchings 2013-10-07 507 config MAGIC_SYSRQ_DEFAULT_ENABLE
8eaede49dfdc1f Ben Hutchings 2013-10-07 508 hex "Enable magic SysRq key functions by default"
8eaede49dfdc1f Ben Hutchings 2013-10-07 509 depends on MAGIC_SYSRQ
8eaede49dfdc1f Ben Hutchings 2013-10-07 510 default 0x1
8eaede49dfdc1f Ben Hutchings 2013-10-07 511 help
8eaede49dfdc1f Ben Hutchings 2013-10-07 512 Specifies which SysRq key functions are enabled by default.
8eaede49dfdc1f Ben Hutchings 2013-10-07 513 This may be set to 1 or 0 to enable or disable them all, or
f8998c226587fb Hans Holmberg 2017-03-16 514 to a bitmask as described in Documentation/admin-guide/sysrq.rst.
8eaede49dfdc1f Ben Hutchings 2013-10-07 515
732dbf3a6104a3 Felix Fietkau 2016-12-22 516 config MAGIC_SYSRQ_SERIAL
732dbf3a6104a3 Felix Fietkau 2016-12-22 517 bool "Enable magic SysRq key over serial"
732dbf3a6104a3 Felix Fietkau 2016-12-22 518 depends on MAGIC_SYSRQ
732dbf3a6104a3 Felix Fietkau 2016-12-22 519 default y
732dbf3a6104a3 Felix Fietkau 2016-12-22 520 help
732dbf3a6104a3 Felix Fietkau 2016-12-22 521 Many embedded boards have a disconnected TTL level serial which can
732dbf3a6104a3 Felix Fietkau 2016-12-22 522 generate some garbage that can lead to spurious false sysrq detects.
732dbf3a6104a3 Felix Fietkau 2016-12-22 523 This option allows you to decide whether you want to enable the
732dbf3a6104a3 Felix Fietkau 2016-12-22 524 magic SysRq key.
732dbf3a6104a3 Felix Fietkau 2016-12-22 525
68af43173d3fce Dmitry Safonov 2020-03-02 526 config MAGIC_SYSRQ_SERIAL_SEQUENCE
68af43173d3fce Dmitry Safonov 2020-03-02 527 string "Char sequence that enables magic SysRq over serial"
68af43173d3fce Dmitry Safonov 2020-03-02 528 depends on MAGIC_SYSRQ_SERIAL
68af43173d3fce Dmitry Safonov 2020-03-02 529 default ""
68af43173d3fce Dmitry Safonov 2020-03-02 530 help
68af43173d3fce Dmitry Safonov 2020-03-02 531 Specifies a sequence of characters that can follow BREAK to enable
68af43173d3fce Dmitry Safonov 2020-03-02 532 SysRq on a serial console.
68af43173d3fce Dmitry Safonov 2020-03-02 533
d3394b3d51828d Dmitry Safonov 2020-03-06 534 If unsure, leave an empty string and the option will not be enabled.
d3394b3d51828d Dmitry Safonov 2020-03-06 535
ec29a5c197e6ef Changbin Du 2019-12-06 @536 config DEBUG_FS
ec29a5c197e6ef Changbin Du 2019-12-06 537 bool "Debug Filesystem"
ec29a5c197e6ef Changbin Du 2019-12-06 538 help
ec29a5c197e6ef Changbin Du 2019-12-06 539 debugfs is a virtual file system that kernel developers use to put
ec29a5c197e6ef Changbin Du 2019-12-06 540 debugging files into. Enable this option to be able to read and
ec29a5c197e6ef Changbin Du 2019-12-06 541 write to these files.
ec29a5c197e6ef Changbin Du 2019-12-06 542
ec29a5c197e6ef Changbin Du 2019-12-06 543 For detailed documentation on the debugfs API, see
ec29a5c197e6ef Changbin Du 2019-12-06 544 Documentation/filesystems/.
ec29a5c197e6ef Changbin Du 2019-12-06 545
ec29a5c197e6ef Changbin Du 2019-12-06 546 If unsure, say N.
ec29a5c197e6ef Changbin Du 2019-12-06 547
:::::: The code at line 536 was first introduced by commit
:::::: ec29a5c197e6ef88fd94a2f3ea087037ae8acc21 kernel-hacking: move DEBUG_FS to 'Generic Kernel Debugging Instruments'
:::::: TO: Changbin Du <changbin.du@...il.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
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