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From: Rong Chen <rong.a.chen@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
	kernel test robot <lkp@intel.com>
Cc: Kees Cook <keescook@chromium.org>, Jann Horn <jannh@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	lkp@01.org,
	Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Andy Lutomirski <luto@amacapital.net>,
	Alexei Starovoitov <alexei.starovoitov@gmail.com>,
	Nadav Amit <namit@vmware.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Andy Lutomirski <luto@kernel.org>,
	Joel Fernandes <joel@joelfernandes.org>,
	yhs@fb.com, Andrew Morton <akpm@linux-foundation.org>,
	Shuah Khan <shuah@kernel.org>, Ingo Molnar <mingo@kernel.org>,
	Changbin Du <changbin.du@gmail.com>
Subject: Re: [LKP] [uaccess] 780464aed0: WARNING:at_arch/x86/include/asm/uaccess.h:#strnlen_user/0x
Date: Mon, 4 Mar 2019 11:20:19 +0800	[thread overview]
Message-ID: <d0cfee27-b2e8-e1ce-1fb9-5ada0c632777@intel.com> (raw)
In-Reply-To: <CAHk-=wij8VLupHh1U-fFhFBjin9Fch3mG2_2=aL9h1L+WBvm2g@mail.gmail.com>


On 3/4/19 3:53 AM, Linus Torvalds wrote:
> On Sun, Mar 3, 2019 at 9:40 AM kernel test robot <lkp@intel.com> wrote:
>> commit: 780464aed08ad00aa6d5f81ac8bef2e714dc8b06 ("[PATCH v5 2/6] uaccess: Use user_access_ok() in user_access_begin()")
> Hmm. Not an upstream commit ID, so this is presumably a backport.
>
> Ok, let's see what it is using the web link:
>
>> url: https://github.com/0day-ci/linux/commits/Masami-Hiramatsu/tracing-probes-uaccess-Add-support-user-space-access/20190303-203749
> Yeah, that just gives a github 404 error.


Sorry for the broken link,  It's ok now.

Best Regards,
Rong Chen


>
> I'm _assuming_ it's the WARN_ON_IN_IRQ() in the access_ok().
>
> Which doesn't much make sense either (why wouldn't it happen in
> mainline)? But without a useful web link to see what is actually being
> tested, I guess it's not something I can even look at...
>
>                        Linus
> _______________________________________________
> LKP mailing list
> LKP@lists.01.org
> https://lists.01.org/mailman/listinfo/lkp

WARNING: multiple messages have this Message-ID (diff)
From: Rong Chen <rong.a.chen@intel.com>
To: lkp@lists.01.org
Subject: Re: [uaccess] 780464aed0: WARNING:at_arch/x86/include/asm/uaccess.h:#strnlen_user/0x
Date: Mon, 04 Mar 2019 11:20:19 +0800	[thread overview]
Message-ID: <d0cfee27-b2e8-e1ce-1fb9-5ada0c632777@intel.com> (raw)
In-Reply-To: <CAHk-=wij8VLupHh1U-fFhFBjin9Fch3mG2_2=aL9h1L+WBvm2g@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 1071 bytes --]


On 3/4/19 3:53 AM, Linus Torvalds wrote:
> On Sun, Mar 3, 2019 at 9:40 AM kernel test robot <lkp@intel.com> wrote:
>> commit: 780464aed08ad00aa6d5f81ac8bef2e714dc8b06 ("[PATCH v5 2/6] uaccess: Use user_access_ok() in user_access_begin()")
> Hmm. Not an upstream commit ID, so this is presumably a backport.
>
> Ok, let's see what it is using the web link:
>
>> url: https://github.com/0day-ci/linux/commits/Masami-Hiramatsu/tracing-probes-uaccess-Add-support-user-space-access/20190303-203749
> Yeah, that just gives a github 404 error.


Sorry for the broken link,  It's ok now.

Best Regards,
Rong Chen


>
> I'm _assuming_ it's the WARN_ON_IN_IRQ() in the access_ok().
>
> Which doesn't much make sense either (why wouldn't it happen in
> mainline)? But without a useful web link to see what is actually being
> tested, I guess it's not something I can even look at...
>
>                        Linus
> _______________________________________________
> LKP mailing list
> LKP(a)lists.01.org
> https://lists.01.org/mailman/listinfo/lkp

  parent reply	other threads:[~2019-03-04  3:20 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-28 16:02 [PATCH v5 0/6] tracing/probes: uaccess: Add support user-space access Masami Hiramatsu
2019-02-28 16:02 ` [PATCH v5 1/6] uaccess: Add user_access_ok() Masami Hiramatsu
2019-02-28 16:03 ` [PATCH v5 2/6] uaccess: Use user_access_ok() in user_access_begin() Masami Hiramatsu
2019-03-03 17:39   ` [uaccess] 780464aed0: WARNING:at_arch/x86/include/asm/uaccess.h:#strnlen_user/0x kernel test robot
2019-03-03 17:39     ` kernel test robot
2019-03-03 19:53     ` Linus Torvalds
2019-03-03 19:53       ` Linus Torvalds
2019-03-04  1:14       ` Masami Hiramatsu
2019-03-04  1:14         ` Masami Hiramatsu
2019-03-04  2:37         ` Linus Torvalds
2019-03-04  2:37           ` Linus Torvalds
2019-03-04  9:06           ` Masami Hiramatsu
2019-03-04  9:06             ` Masami Hiramatsu
2019-03-04 15:16             ` Masami Hiramatsu
2019-03-04 15:16               ` Masami Hiramatsu
2019-03-04 15:58               ` Jann Horn
2019-03-04 15:58                 ` Jann Horn
2019-03-04 18:59             ` Linus Torvalds
2019-03-04 18:59               ` Linus Torvalds
2019-03-05  2:36               ` Masami Hiramatsu
2019-03-05  2:36                 ` Masami Hiramatsu
2019-03-05  8:22                 ` Masami Hiramatsu
2019-03-05  8:22                   ` Masami Hiramatsu
2019-03-05  9:01                   ` Masami Hiramatsu
2019-03-05  9:01                     ` Masami Hiramatsu
2019-03-05  9:07                 ` Peter Zijlstra
2019-03-05  9:07                   ` Peter Zijlstra
2019-03-05 13:58                   ` Masami Hiramatsu
2019-03-05 13:58                     ` Masami Hiramatsu
2019-03-05 14:53                     ` Peter Zijlstra
2019-03-05 14:53                       ` Peter Zijlstra
2019-03-05 15:18                       ` Masami Hiramatsu
2019-03-05 15:18                         ` Masami Hiramatsu
2019-03-04  3:20       ` Rong Chen [this message]
2019-03-04  3:20         ` Rong Chen
2019-02-28 16:03 ` [PATCH v5 3/6] uaccess: Add non-pagefault user-space read functions Masami Hiramatsu
2019-02-28 22:49   ` Yonghong Song
2019-03-01  2:29     ` Masami Hiramatsu
2019-03-01  6:30       ` Yonghong Song
2019-02-28 16:04 ` [PATCH v5 4/6] tracing/probe: Add ustring type for user-space string Masami Hiramatsu
2019-02-28 16:04 ` [PATCH v5 5/6] tracing/probe: Support user-space dereference Masami Hiramatsu
2019-02-28 16:05 ` [PATCH v5 6/6] selftests/ftrace: Add user-memory access syntax testcase Masami Hiramatsu

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