linux-kernel - Re: [PATCH] apparmor: don't try to replace stale label in ptraceme check

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Date:   Sun, 30 Sep 2018 12:34:15 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Jann Horn <jannh@...gle.com>
Cc:     kbuild-all@...org, John Johansen <john.johansen@...onical.com>,
        apparmor@...ts.ubuntu.com, jannh@...gle.com,
        linux-kernel@...r.kernel.org, Cyrill Gorcunov <gorcunov@...il.com>,
        kernel test robot <rong.a.chen@...el.com>
Subject: Re: [PATCH] apparmor: don't try to replace stale label in ptraceme
 check

Hi Jann,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on security/next]
[also build test WARNING on v4.19-rc5 next-20180928]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Jann-Horn/apparmor-don-t-try-to-replace-stale-label-in-ptraceme-check/20180929-101346
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git next
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/tty/serial/8250/8250_port.c:332:14: warning: symbol 'au_serial_in' was not declared. Should it be static?
   drivers/tty/serial/8250/8250_port.c:342:6: warning: symbol 'au_serial_out' was not declared. Should it be static?
>> include/linux/spinlock.h:354:9: warning: context imbalance in 'serial8250_console_write' - unexpected unlock

vim +/serial8250_console_write +354 include/linux/spinlock.h

c2f21ce2 Thomas Gleixner 2009-12-02  351  
3490565b Denys Vlasenko  2015-07-13  352  static __always_inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
c2f21ce2 Thomas Gleixner 2009-12-02  353  {
c2f21ce2 Thomas Gleixner 2009-12-02 @354  	raw_spin_unlock_irqrestore(&lock->rlock, flags);
c2f21ce2 Thomas Gleixner 2009-12-02  355  }
c2f21ce2 Thomas Gleixner 2009-12-02  356  

:::::: The code at line 354 was first introduced by commit
:::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new raw_spinlock

:::::: TO: Thomas Gleixner <tglx@...utronix.de>
:::::: CC: Thomas Gleixner <tglx@...utronix.de>

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