From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: arch/powerpc/include/asm/hw_irq.h:293:17: sparse: sparse: context imbalance in 'serial8250_console_write' - wrong count at exit
Date: Mon, 02 Nov 2020 12:19:24 +0800 [thread overview]
Message-ID: <202011021216.q87dS6II-lkp@intel.com> (raw)
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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Christophe Leroy <christophe.leroy@c-s.fr>
CC: Michael Ellerman <mpe@ellerman.id.au>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3cea11cd5e3b00d91caf0b4730194039b45c5891
commit: b020aa9d1e875c1c91b1390acdf42320e7060d84 powerpc: cleanup hw_irq.h
date: 12 months ago
:::::: branch date: 6 hours ago
:::::: commit date: 12 months ago
config: powerpc64-randconfig-s032-20201031 (attached as .config)
compiler: powerpc-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-76-gf680124b-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b020aa9d1e875c1c91b1390acdf42320e7060d84
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout b020aa9d1e875c1c91b1390acdf42320e7060d84
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
"sparse warnings: (new ones prefixed by >>)"
drivers/tty/serial/8250/8250_port.c: note: in included file (through include/linux/io.h, include/linux/irq.h, arch/powerpc/include/asm/hardirq.h, ...):
arch/powerpc/include/asm/io.h:149:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:144:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:150:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:145:1: sparse: sparse: dereference of noderef expression
drivers/tty/serial/8250/8250_port.c: note: in included file (through arch/powerpc/include/asm/irqflags.h, include/linux/irqflags.h, include/linux/spinlock.h, ...):
>> arch/powerpc/include/asm/hw_irq.h:293:17: sparse: sparse: context imbalance in 'serial8250_console_write' - wrong count at exit
vim +/serial8250_console_write +293 arch/powerpc/include/asm/hw_irq.h
df9ee29270c11db arch/powerpc/include/asm/hw_irq.h David Howells 2010-10-07 287
df9ee29270c11db arch/powerpc/include/asm/hw_irq.h David Howells 2010-10-07 288 static inline void arch_local_irq_restore(unsigned long flags)
df9ee29270c11db arch/powerpc/include/asm/hw_irq.h David Howells 2010-10-07 289 {
b020aa9d1e875c1 arch/powerpc/include/asm/hw_irq.h Christophe Leroy 2019-08-29 290 if (IS_ENABLED(CONFIG_BOOKE))
b020aa9d1e875c1 arch/powerpc/include/asm/hw_irq.h Christophe Leroy 2019-08-29 291 wrtee(flags);
b020aa9d1e875c1 arch/powerpc/include/asm/hw_irq.h Christophe Leroy 2019-08-29 292 else
df9ee29270c11db arch/powerpc/include/asm/hw_irq.h David Howells 2010-10-07 @293 mtmsr(flags);
df9ee29270c11db arch/powerpc/include/asm/hw_irq.h David Howells 2010-10-07 294 }
^1da177e4c3f415 include/asm-ppc64/hw_irq.h Linus Torvalds 2005-04-16 295
:::::: The code at line 293 was first introduced by commit
:::::: df9ee29270c11dba7d0fe0b83ce47a4d8e8d2101 Fix IRQ flag handling naming
:::::: TO: David Howells <dhowells@redhat.com>
:::::: CC: David Howells <dhowells@redhat.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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reply other threads:[~2020-11-02 4:19 UTC|newest]
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