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From: Randy Dunlap <rdunlap@infradead.org>
To: Michal Hocko <mhocko@kernel.org>, Dmitry Vyukov <dvyukov@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Linux-MM <linux-mm@kvack.org>,
	Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: mmots build error: version control conflict marker in file
Date: Tue, 19 Dec 2017 12:00:12 -0800	[thread overview]
Message-ID: <7cec6594-94c7-a238-4046-0061a9adc20d@infradead.org> (raw)
In-Reply-To: <20171219090319.GD2787@dhcp22.suse.cz>

On 12/19/2017 01:03 AM, Michal Hocko wrote:
> [CC Johannes]
> 
> On Tue 19-12-17 09:36:20, Dmitry Vyukov wrote:
>> Hello,
>>
>> syzbot hit the following crash on 80f3359313dfd0e574d0d245dd93a7c3bf39e1fa
>> git://git.cmpxchg.org/linux-mmots.git master
>>
>> failed to run /usr/bin/make [make bzImage -j 32
>> CC=/syzkaller/gcc/bin/gcc]: exit status 2
>> scripts/kconfig/conf  --silentoldconfig Kconfig
>>   CHK     include/config/kernel.release
>>   CHK     include/generated/uapi/linux/version.h
>>   UPD     include/config/kernel.release
>>   CHK     scripts/mod/devicetable-offsets.h
>>   CHK     include/generated/utsrelease.h
>>   UPD     include/generated/utsrelease.h
>>   CHK     include/generated/bounds.h
>>   CHK     include/generated/timeconst.h
>>   CC      arch/x86/kernel/asm-offsets.s
>> In file included from ./arch/x86/include/asm/cpufeature.h:5:0,
>>                  from ./arch/x86/include/asm/thread_info.h:53,
>>                  from ./include/linux/thread_info.h:38,
>>                  from ./arch/x86/include/asm/preempt.h:7,
>>                  from ./include/linux/preempt.h:81,
>>                  from ./include/linux/spinlock.h:51,
>>                  from ./include/linux/mmzone.h:8,
>>                  from ./include/linux/gfp.h:6,
>>                  from ./include/linux/slab.h:15,
>>                  from ./include/linux/crypto.h:24,
>>                  from arch/x86/kernel/asm-offsets.c:9:
>> ./arch/x86/include/asm/processor.h:340:1: error: version control
>> conflict marker in file
>>  <<<<<<< HEAD
>>  ^~~~~~~
>> ./arch/x86/include/asm/processor.h:346:24: error: field a??stacka?? has
>> incomplete type
>>   struct SYSENTER_stack stack;
>>                         ^~~~~
>> ./arch/x86/include/asm/processor.h:347:1: error: version control
>> conflict marker in file
>>  =======
>>  ^~~~~~~
>> Kbuild:56: recipe for target 'arch/x86/kernel/asm-offsets.s' failed
>> make[1]: *** [arch/x86/kernel/asm-offsets.s] Error 1
>> Makefile:1090: recipe for target 'prepare0' failed
>> make: *** [prepare0] Error 2
> 

Wow. arch/x86/include/asm/processor.h around line 340++ looks like this:

<<<<<<< HEAD
struct SYSENTER_stack {
	unsigned long		words[64];
};

struct SYSENTER_stack_page {
	struct SYSENTER_stack stack;
=======
struct entry_stack {
	unsigned long		words[64];
};

struct entry_stack_page {
	struct entry_stack stack;
>>>>>>> linux-next/akpm-base
} __aligned(PAGE_SIZE);



-- 
~Randy

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  reply	other threads:[~2017-12-19 20:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-19  8:36 mmots build error: version control conflict marker in file Dmitry Vyukov
2017-12-19  9:03 ` Michal Hocko
2017-12-19 20:00   ` Randy Dunlap [this message]
2017-12-19 20:01     ` Randy Dunlap
2017-12-20  9:16       ` Dmitry Vyukov
2017-12-19 23:53     ` Andrew Morton
2017-12-20  9:17       ` Dmitry Vyukov

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