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From: kbuild test robot <lkp@intel.com>
To: changbin.du@intel.com
Cc: kbuild-all@01.org, yamada.masahiro@socionext.com,
	michal.lkml@markovi.net, tglx@linutronix.de, mingo@redhat.com,
	akpm@linux-foundation.org, rostedt@goodmis.org,
	rdunlap@infradead.org, x86@kernel.org, lgirdwood@gmail.com,
	broonie@kernel.org, arnd@arndb.de, linux-kbuild@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
	Changbin Du <changbin.du@intel.com>
Subject: Re: [PATCH v3 3/5] kernel hacking: new config NO_AUTO_INLINE to disable compiler auto-inline optimizations
Date: Sun, 6 May 2018 14:15:03 +0800	[thread overview]
Message-ID: <201805061240.ppEGoBZR%fengguang.wu@intel.com> (raw)
In-Reply-To: <1525566016-30172-4-git-send-email-changbin.du@intel.com>

[-- Attachment #1: Type: text/plain, Size: 18596 bytes --]

Hi Changbin,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.17-rc3 next-20180504]
[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/changbin-du-intel-com/kernel-hacking-GCC-optimization-for-better-debug-experience-Og/20180506-110946
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

   arch/x86/entry/vsyscall/vsyscall_64.c: In function 'emulate_vsyscall':
>> arch/x86/entry/vsyscall/vsyscall_64.c:127:19: warning: 'syscall_nr' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int vsyscall_nr, syscall_nr, tmp;
                      ^~~~~~~~~~

vim +/syscall_nr +127 arch/x86/entry/vsyscall/vsyscall_64.c

4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  122  
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  123  bool emulate_vsyscall(struct pt_regs *regs, unsigned long address)
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  124  {
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  125  	struct task_struct *tsk;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  126  	unsigned long caller;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01 @127  	int vsyscall_nr, syscall_nr, tmp;
2a53ccbc arch/x86/entry/vsyscall/vsyscall_64.c Ingo Molnar       2016-07-15  128  	int prev_sig_on_uaccess_err;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  129  	long ret;
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  130  	unsigned long orig_dx;
7460ed28 arch/x86_64/kernel/vsyscall.c         John Stultz       2007-02-16  131  
c9712944 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-07-13  132  	/*
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  133  	 * No point in checking CS -- the only way to get here is a user mode
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  134  	 * trap to a high address, which means that we're in 64-bit user code.
c9712944 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-07-13  135  	 */
7460ed28 arch/x86_64/kernel/vsyscall.c         John Stultz       2007-02-16  136  
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  137  	WARN_ON_ONCE(address != regs->ip);
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  138  
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  139  	if (vsyscall_mode == NONE) {
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  140  		warn_bad_vsyscall(KERN_INFO, regs,
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  141  				  "vsyscall attempted with vsyscall=none");
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  142  		return false;
c9712944 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-07-13  143  	}
7460ed28 arch/x86_64/kernel/vsyscall.c         John Stultz       2007-02-16  144  
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  145  	vsyscall_nr = addr_to_vsyscall_nr(address);
c149a665 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-03  146  
c149a665 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-03  147  	trace_emulate_vsyscall(vsyscall_nr);
c149a665 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-03  148  
c9712944 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-07-13  149  	if (vsyscall_nr < 0) {
c9712944 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-07-13  150  		warn_bad_vsyscall(KERN_WARNING, regs,
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  151  				  "misaligned vsyscall (exploit attempt or buggy program) -- look up the vsyscall kernel parameter if you need a workaround");
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  152  		goto sigsegv;
7460ed28 arch/x86_64/kernel/vsyscall.c         John Stultz       2007-02-16  153  	}
7460ed28 arch/x86_64/kernel/vsyscall.c         John Stultz       2007-02-16  154  
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  155  	if (get_user(caller, (unsigned long __user *)regs->sp) != 0) {
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  156  		warn_bad_vsyscall(KERN_WARNING, regs,
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  157  				  "vsyscall with bad stack (exploit attempt?)");
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  158  		goto sigsegv;
^1da177e arch/x86_64/kernel/vsyscall.c         Linus Torvalds    2005-04-16  159  	}
^1da177e arch/x86_64/kernel/vsyscall.c         Linus Torvalds    2005-04-16  160  
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  161  	tsk = current;
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  162  
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  163  	/*
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  164  	 * Check for access_ok violations and find the syscall nr.
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  165  	 *
46ed99d1 arch/x86/kernel/vsyscall_64.c         Emil Goode        2012-04-01  166  	 * NULL is a valid user pointer (in the access_ok sense) on 32-bit and
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  167  	 * 64-bit, so we don't need to special-case it here.  For all the
46ed99d1 arch/x86/kernel/vsyscall_64.c         Emil Goode        2012-04-01  168  	 * vsyscalls, NULL means "don't write anything" not "write it at
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  169  	 * address 0".
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  170  	 */
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  171  	switch (vsyscall_nr) {
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  172  	case 0:
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  173  		if (!write_ok_or_segv(regs->di, sizeof(struct timeval)) ||
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  174  		    !write_ok_or_segv(regs->si, sizeof(struct timezone))) {
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  175  			ret = -EFAULT;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  176  			goto check_fault;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  177  		}
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  178  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  179  		syscall_nr = __NR_gettimeofday;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  180  		break;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  181  
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  182  	case 1:
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  183  		if (!write_ok_or_segv(regs->di, sizeof(time_t))) {
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  184  			ret = -EFAULT;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  185  			goto check_fault;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  186  		}
5651721e arch/x86/kernel/vsyscall_64.c         Will Drewry       2012-07-13  187  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  188  		syscall_nr = __NR_time;
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  189  		break;
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  190  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  191  	case 2:
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  192  		if (!write_ok_or_segv(regs->di, sizeof(unsigned)) ||
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  193  		    !write_ok_or_segv(regs->si, sizeof(unsigned))) {
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  194  			ret = -EFAULT;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  195  			goto check_fault;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  196  		}
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  197  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  198  		syscall_nr = __NR_getcpu;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  199  		break;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  200  	}
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  201  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  202  	/*
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  203  	 * Handle seccomp.  regs->ip must be the original value.
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  204  	 * See seccomp_send_sigsys and Documentation/prctl/seccomp_filter.txt.
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  205  	 *
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  206  	 * We could optimize the seccomp disabled case, but performance
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  207  	 * here doesn't matter.
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  208  	 */
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  209  	regs->orig_ax = syscall_nr;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  210  	regs->ax = -ENOSYS;
2f275de5 arch/x86/entry/vsyscall/vsyscall_64.c Andy Lutomirski   2016-05-27  211  	tmp = secure_computing(NULL);
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  212  	if ((!tmp && regs->orig_ax != syscall_nr) || regs->ip != address) {
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  213  		warn_bad_vsyscall(KERN_DEBUG, regs,
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  214  				  "seccomp tried to change syscall nr or ip");
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  215  		do_exit(SIGSYS);
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  216  	}
26893107 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2014-11-04  217  	regs->orig_ax = -1;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  218  	if (tmp)
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  219  		goto do_ret;  /* skip requested */
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  220  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  221  	/*
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  222  	 * With a real vsyscall, page faults cause SIGSEGV.  We want to
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  223  	 * preserve that behavior to make writing exploits harder.
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  224  	 */
2a53ccbc arch/x86/entry/vsyscall/vsyscall_64.c Ingo Molnar       2016-07-15  225  	prev_sig_on_uaccess_err = current->thread.sig_on_uaccess_err;
2a53ccbc arch/x86/entry/vsyscall/vsyscall_64.c Ingo Molnar       2016-07-15  226  	current->thread.sig_on_uaccess_err = 1;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  227  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  228  	ret = -EFAULT;
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  229  	switch (vsyscall_nr) {
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  230  	case 0:
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  231  		/* this decodes regs->di and regs->si on its own */
d5a00528 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-09  232  		ret = __x64_sys_gettimeofday(regs);
5651721e arch/x86/kernel/vsyscall_64.c         Will Drewry       2012-07-13  233  		break;
5651721e arch/x86/kernel/vsyscall_64.c         Will Drewry       2012-07-13  234  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  235  	case 1:
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  236  		/* this decodes regs->di on its own */
d5a00528 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-09  237  		ret = __x64_sys_time(regs);
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  238  		break;
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  239  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  240  	case 2:
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  241  		/* while we could clobber regs->dx, we didn't in the past... */
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  242  		orig_dx = regs->dx;
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  243  		regs->dx = 0;
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  244  		/* this decodes regs->di, regs->si and regs->dx on its own */
d5a00528 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-09  245  		ret = __x64_sys_getcpu(regs);
fa697140 arch/x86/entry/vsyscall/vsyscall_64.c Dominik Brodowski 2018-04-05  246  		regs->dx = orig_dx;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  247  		break;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  248  	}
8c73626a arch/x86/kernel/vsyscall_64.c         John Stultz       2010-07-13  249  
2a53ccbc arch/x86/entry/vsyscall/vsyscall_64.c Ingo Molnar       2016-07-15  250  	current->thread.sig_on_uaccess_err = prev_sig_on_uaccess_err;
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  251  
87b526d3 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2012-10-01  252  check_fault:
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  253  	if (ret == -EFAULT) {
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  254  		/* Bad news -- userspace fed a bad pointer to a vsyscall. */
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  255  		warn_bad_vsyscall(KERN_INFO, regs,
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  256  				  "vsyscall fault (exploit attempt?)");
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  257  
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  258  		/*
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  259  		 * If we failed to generate a signal for any reason,
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  260  		 * generate one here.  (This should be impossible.)
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  261  		 */
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  262  		if (WARN_ON_ONCE(!sigismember(&tsk->pending.signal, SIGBUS) &&
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  263  				 !sigismember(&tsk->pending.signal, SIGSEGV)))
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  264  			goto sigsegv;
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  265  
4fc34901 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-11-07  266  		return true;  /* Don't emulate the ret. */
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  267  	}
8c73626a arch/x86/kernel/vsyscall_64.c         John Stultz       2010-07-13  268  
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  269  	regs->ax = ret;
8c73626a arch/x86/kernel/vsyscall_64.c         John Stultz       2010-07-13  270  
5651721e arch/x86/kernel/vsyscall_64.c         Will Drewry       2012-07-13  271  do_ret:
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  272  	/* Emulate a ret instruction. */
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  273  	regs->ip = caller;
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  274  	regs->sp += 8;
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  275  	return true;
c08c8205 arch/x86_64/kernel/vsyscall.c         Vojtech Pavlik    2006-09-26  276  
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  277  sigsegv:
5cec93c2 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-06-05  278  	force_sig(SIGSEGV, current);
3ae36655 arch/x86/kernel/vsyscall_64.c         Andy Lutomirski   2011-08-10  279  	return true;
^1da177e arch/x86_64/kernel/vsyscall.c         Linus Torvalds    2005-04-16  280  }
^1da177e arch/x86_64/kernel/vsyscall.c         Linus Torvalds    2005-04-16  281  

:::::: The code at line 127 was first introduced by commit
:::::: 87b526d349b04c31d7b3a40b434eb3f825d22305 seccomp: Make syscall skipping and nr changes more consistent

:::::: TO: Andy Lutomirski <luto@amacapital.net>
:::::: CC: James Morris <james.l.morris@oracle.com>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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  parent reply	other threads:[~2018-05-06  6:15 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-06  0:20 [PATCH v3 0/5] kernel hacking: GCC optimization for better debug experience (-Og) changbin.du
2018-05-06  0:20 ` [PATCH v3 1/5] x86/mm: surround level4_kernel_pgt with #ifdef CONFIG_X86_5LEVEL...#endif changbin.du
2018-05-06  0:20 ` [PATCH v3 2/5] regulator: add dummy function of_find_regulator_by_node changbin.du
2018-05-09  8:21   ` Mark Brown
2018-05-09  8:13     ` Du, Changbin
2018-05-09  8:39       ` Mark Brown
2018-05-06  0:20 ` [PATCH v3 3/5] kernel hacking: new config NO_AUTO_INLINE to disable compiler auto-inline optimizations changbin.du
2018-05-06  5:50   ` kbuild test robot
2018-05-06  6:15   ` kbuild test robot [this message]
2018-05-06  0:20 ` [PATCH v3 4/5] kernel hacking: new config CC_OPTIMIZE_FOR_DEBUGGING to apply GCC -Og optimization changbin.du
2018-05-06  0:20 ` [PATCH v3 5/5] asm-generic: fix build error in fix_to_virt with CONFIG_CC_OPTIMIZE_FOR_DEBUGGING changbin.du

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