On 2/4/21 11:27 PM, Zorro Lang wrote:
On Thu, Feb 04, 2021 at 10:31:59PM +0530, Aneesh Kumar K.V wrote:
On 2/4/21 10:23 PM, Jens Axboe wrote:
On 2/1/21 11:30 PM, Aneesh Kumar K.V wrote:
On 2/2/21 11:50 AM, Christophe Leroy wrote:
Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
On 2/2/21
On Thu, Feb 04, 2021 at 10:31:59PM +0530, Aneesh Kumar K.V wrote:
> On 2/4/21 10:23 PM, Jens Axboe wrote:
> > On 2/1/21 11:30 PM, Aneesh Kumar K.V wrote:
> > > On 2/2/21 11:50 AM, Christophe Leroy wrote:
> > > >
> > > >
> > > > Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
> > > > > On 2/2/21
On 2/4/21 10:01 AM, Aneesh Kumar K.V wrote:
> On 2/4/21 10:23 PM, Jens Axboe wrote:
>> On 2/1/21 11:30 PM, Aneesh Kumar K.V wrote:
>>> On 2/2/21 11:50 AM, Christophe Leroy wrote:
Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
> On 2/2/21 11:32 AM, Christophe Leroy wrote:
>
On 2/4/21 10:23 PM, Jens Axboe wrote:
On 2/1/21 11:30 PM, Aneesh Kumar K.V wrote:
On 2/2/21 11:50 AM, Christophe Leroy wrote:
Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
On 2/2/21 11:32 AM, Christophe Leroy wrote:
Le 02/02/2021 à 06:55, Aneesh Kumar K.V a écrit :
Aneesh Kumar K.V
On 2/1/21 11:30 PM, Aneesh Kumar K.V wrote:
> On 2/2/21 11:50 AM, Christophe Leroy wrote:
>>
>>
>> Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
>>> On 2/2/21 11:32 AM, Christophe Leroy wrote:
Le 02/02/2021 à 06:55, Aneesh Kumar K.V a écrit :
> Aneesh Kumar K.V writes:
>
Excerpts from Aneesh Kumar K.V's message of February 2, 2021 4:30 pm:
> On 2/2/21 11:50 AM, Christophe Leroy wrote:
>>
>>
>> Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
>>> On 2/2/21 11:32 AM, Christophe Leroy wrote:
Le 02/02/2021 à 06:55, Aneesh Kumar K.V a écrit :
> Ane
On 2/2/21 11:50 AM, Christophe Leroy wrote:
Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
On 2/2/21 11:32 AM, Christophe Leroy wrote:
Le 02/02/2021 à 06:55, Aneesh Kumar K.V a écrit :
Aneesh Kumar K.V writes:
Nicholas Piggin writes:
Excerpts from Michael Ellerman's message of Jan
Le 02/02/2021 à 07:16, Aneesh Kumar K.V a écrit :
On 2/2/21 11:32 AM, Christophe Leroy wrote:
Le 02/02/2021 à 06:55, Aneesh Kumar K.V a écrit :
Aneesh Kumar K.V writes:
Nicholas Piggin writes:
Excerpts from Michael Ellerman's message of January 30, 2021 9:22 pm:
Christophe Leroy wr
On 2/2/21 11:32 AM, Christophe Leroy wrote:
Le 02/02/2021 à 06:55, Aneesh Kumar K.V a écrit :
Aneesh Kumar K.V writes:
Nicholas Piggin writes:
Excerpts from Michael Ellerman's message of January 30, 2021 9:22 pm:
Christophe Leroy writes:
+Aneesh
Le 29/01/2021 à 07:52, Zorro Lang a éc
Le 02/02/2021 à 06:55, Aneesh Kumar K.V a écrit :
Aneesh Kumar K.V writes:
Nicholas Piggin writes:
Excerpts from Michael Ellerman's message of January 30, 2021 9:22 pm:
Christophe Leroy writes:
+Aneesh
Le 29/01/2021 à 07:52, Zorro Lang a écrit :
..
[ 96.200296] [ cut
Aneesh Kumar K.V writes:
> Nicholas Piggin writes:
>
>> Excerpts from Michael Ellerman's message of January 30, 2021 9:22 pm:
>>> Christophe Leroy writes:
+Aneesh
Le 29/01/2021 à 07:52, Zorro Lang a écrit :
>>> ..
> [ 96.200296] [ cut here ]
> [
Nicholas Piggin writes:
> Excerpts from Michael Ellerman's message of January 30, 2021 9:22 pm:
>> Christophe Leroy writes:
>>> +Aneesh
>>>
>>> Le 29/01/2021 à 07:52, Zorro Lang a écrit :
>> ..
[ 96.200296] [ cut here ]
[ 96.200304] Bug: Read fault blocked b
Excerpts from Michael Ellerman's message of January 30, 2021 9:22 pm:
> Christophe Leroy writes:
>> +Aneesh
>>
>> Le 29/01/2021 à 07:52, Zorro Lang a écrit :
> ..
>>> [ 96.200296] [ cut here ]
>>> [ 96.200304] Bug: Read fault blocked by KUAP!
>>> [ 96.200309] WARNING:
Christophe Leroy writes:
> +Aneesh
>
> Le 29/01/2021 à 07:52, Zorro Lang a écrit :
..
>> [ 96.200296] [ cut here ]
>> [ 96.200304] Bug: Read fault blocked by KUAP!
>> [ 96.200309] WARNING: CPU: 3 PID: 1876 at arch/powerpc/mm/fault.c:229
>> bad_kernel_fault+0x180/0x31
+Aneesh
Le 29/01/2021 à 07:52, Zorro Lang a écrit :
On Thu, Jan 28, 2021 at 03:44:21PM +0100, Christophe Leroy wrote:
Le 28/01/2021 à 15:42, Jens Axboe a écrit :
On 1/28/21 6:52 AM, Zorro Lang wrote:
On Wed, Jan 27, 2021 at 08:06:37PM -0700, Jens Axboe wrote:
On 1/27/21 8:13 PM, Zorro Lang
On Thu, Jan 28, 2021 at 03:44:21PM +0100, Christophe Leroy wrote:
>
>
> Le 28/01/2021 à 15:42, Jens Axboe a écrit :
> > On 1/28/21 6:52 AM, Zorro Lang wrote:
> > > On Wed, Jan 27, 2021 at 08:06:37PM -0700, Jens Axboe wrote:
> > > > On 1/27/21 8:13 PM, Zorro Lang wrote:
> > > > > On Thu, Jan 28, 2
On Thu, Jan 28, 2021 at 03:44:21PM +0100, Christophe Leroy wrote:
>
>
> Le 28/01/2021 à 15:42, Jens Axboe a écrit :
> > On 1/28/21 6:52 AM, Zorro Lang wrote:
> > > On Wed, Jan 27, 2021 at 08:06:37PM -0700, Jens Axboe wrote:
> > > > On 1/27/21 8:13 PM, Zorro Lang wrote:
> > > > > On Thu, Jan 28, 2
Le 28/01/2021 à 15:42, Jens Axboe a écrit :
On 1/28/21 6:52 AM, Zorro Lang wrote:
On Wed, Jan 27, 2021 at 08:06:37PM -0700, Jens Axboe wrote:
On 1/27/21 8:13 PM, Zorro Lang wrote:
On Thu, Jan 28, 2021 at 10:18:07AM +1000, Nicholas Piggin wrote:
Excerpts from Jens Axboe's message of January
On 1/28/21 6:52 AM, Zorro Lang wrote:
> On Wed, Jan 27, 2021 at 08:06:37PM -0700, Jens Axboe wrote:
>> On 1/27/21 8:13 PM, Zorro Lang wrote:
>>> On Thu, Jan 28, 2021 at 10:18:07AM +1000, Nicholas Piggin wrote:
Excerpts from Jens Axboe's message of January 28, 2021 5:29 am:
> On 1/27/21 9:3
On Wed, Jan 27, 2021 at 08:06:37PM -0700, Jens Axboe wrote:
> On 1/27/21 8:13 PM, Zorro Lang wrote:
> > On Thu, Jan 28, 2021 at 10:18:07AM +1000, Nicholas Piggin wrote:
> >> Excerpts from Jens Axboe's message of January 28, 2021 5:29 am:
> >>> On 1/27/21 9:38 AM, Christophe Leroy wrote:
>
> >>
On 1/27/21 8:13 PM, Zorro Lang wrote:
> On Thu, Jan 28, 2021 at 10:18:07AM +1000, Nicholas Piggin wrote:
>> Excerpts from Jens Axboe's message of January 28, 2021 5:29 am:
>>> On 1/27/21 9:38 AM, Christophe Leroy wrote:
Le 27/01/2021 à 15:56, Zorro Lang a écrit :
> On powerpc, io
On Thu, Jan 28, 2021 at 10:18:07AM +1000, Nicholas Piggin wrote:
> Excerpts from Jens Axboe's message of January 28, 2021 5:29 am:
> > On 1/27/21 9:38 AM, Christophe Leroy wrote:
> >>
> >>
> >> Le 27/01/2021 à 15:56, Zorro Lang a écrit :
> >>> On powerpc, io_uring test hit below KUAP fault on __d
Excerpts from Jens Axboe's message of January 28, 2021 5:29 am:
> On 1/27/21 9:38 AM, Christophe Leroy wrote:
>>
>>
>> Le 27/01/2021 à 15:56, Zorro Lang a écrit :
>>> On powerpc, io_uring test hit below KUAP fault on __do_page_fault.
>>> The fail source line is:
>>>
>>>if (unlikely(!is_user &
On 1/27/21 9:38 AM, Christophe Leroy wrote:
>
>
> Le 27/01/2021 à 15:56, Zorro Lang a écrit :
>> On powerpc, io_uring test hit below KUAP fault on __do_page_fault.
>> The fail source line is:
>>
>>if (unlikely(!is_user && bad_kernel_fault(regs, error_code, address,
>> is_write)))
>>r
Le 27/01/2021 à 15:56, Zorro Lang a écrit :
On powerpc, io_uring test hit below KUAP fault on __do_page_fault.
The fail source line is:
if (unlikely(!is_user && bad_kernel_fault(regs, error_code, address,
is_write)))
return SIGSEGV;
The is_user() is based on user_mod(regs) only. T
On powerpc, io_uring test hit below KUAP fault on __do_page_fault.
The fail source line is:
if (unlikely(!is_user && bad_kernel_fault(regs, error_code, address,
is_write)))
return SIGSEGV;
The is_user() is based on user_mod(regs) only. This's not suit for
io_uring, where the helper threa
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