On Tue, Jan 12, 2021 at 09:28:32AM -0800, Linus Torvalds wrote:
> On Tue, Jan 12, 2021 at 5:20 AM Lukas Wunner wrote:
> > > Variable declarations in for-loops is the only one I can think of. I
> > > think that would clean up some code (and some macros), but might not
> > > be compelling on its own
On Tue, Jan 12, 2021 at 5:20 AM Lukas Wunner wrote:
>
> > Variable declarations in for-loops is the only one I can think of. I
> > think that would clean up some code (and some macros), but might not
> > be compelling on its own.
>
> Anonymous structs/unions. I used to have a use case for that in
From: Florian Weimer
> Sent: 12 January 2021 13:32
>
> * Lukas Wunner:
>
> > On Fri, Jan 08, 2021 at 12:02:53PM -0800, Linus Torvalds wrote:
> >> I appreciate Arnd pointing out "--std=gnu11", though. What are the
> >> actual relevant language improvements?
> >>
> >> Variable declarations in for-l
* Lukas Wunner:
> On Fri, Jan 08, 2021 at 12:02:53PM -0800, Linus Torvalds wrote:
>> I appreciate Arnd pointing out "--std=gnu11", though. What are the
>> actual relevant language improvements?
>>
>> Variable declarations in for-loops is the only one I can think of. I
>> think that would clean up
On Fri, Jan 08, 2021 at 12:02:53PM -0800, Linus Torvalds wrote:
> I appreciate Arnd pointing out "--std=gnu11", though. What are the
> actual relevant language improvements?
>
> Variable declarations in for-loops is the only one I can think of. I
> think that would clean up some code (and some mac
On Fri, Jan 8, 2021 at 12:34 PM Arnd Bergmann wrote:
>
> On Fri, Jan 8, 2021 at 9:02 PM Linus Torvalds
> wrote:
> > On Fri, Jan 8, 2021 at 1:27 AM Will Deacon wrote:
> > >
> > > On Fri, Jan 08, 2021 at 10:21:54AM +0100, Peter Zijlstra wrote:
> > > > On Thu, Jan 07, 2021 at 10:20:38PM +0100, Arnd
On Fri, Jan 08, 2021 at 12:02:53PM -0800, Linus Torvalds wrote:
> Well, honestly, I'm always in favor of having people not use ancient
> compilers, but both of the issues at hand do seem to be specific to
> arm64.
>
> The "gcc before 5.1 generates incorrect stack pointer writes on arm64"
> sounds
On Fri, Jan 8, 2021 at 9:02 PM Linus Torvalds
wrote:
> On Fri, Jan 8, 2021 at 1:27 AM Will Deacon wrote:
> >
> > On Fri, Jan 08, 2021 at 10:21:54AM +0100, Peter Zijlstra wrote:
> > > On Thu, Jan 07, 2021 at 10:20:38PM +0100, Arnd Bergmann wrote:
> > > > On Thu, Jan 7, 2021 at 2:37 PM Russell King
On Fri, Jan 8, 2021 at 1:27 AM Will Deacon wrote:
>
> On Fri, Jan 08, 2021 at 10:21:54AM +0100, Peter Zijlstra wrote:
> > On Thu, Jan 07, 2021 at 10:20:38PM +0100, Arnd Bergmann wrote:
> > > On Thu, Jan 7, 2021 at 2:37 PM Russell King - ARM Linux admin
> >
> > > > So, do we raise the minimum gcc v
Hi!
> > > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
> > > them in my git history.
> >
> > So, do we raise the minimum gcc version for the kernel as a whole to 5.1
> > or just for aarch64?
>
> Russell, Arnd, thanks so much for tracking down the root cause of the
> bug!
On Fri, Jan 08, 2021 at 10:21:54AM +0100, Peter Zijlstra wrote:
> On Thu, Jan 07, 2021 at 10:20:38PM +0100, Arnd Bergmann wrote:
> > On Thu, Jan 7, 2021 at 2:37 PM Russell King - ARM Linux admin
>
> > > So, do we raise the minimum gcc version for the kernel as a whole to 5.1
> > > or just for aarc
On Thu, Jan 07, 2021 at 10:20:38PM +0100, Arnd Bergmann wrote:
> On Thu, Jan 7, 2021 at 2:37 PM Russell King - ARM Linux admin
> > So, do we raise the minimum gcc version for the kernel as a whole to 5.1
> > or just for aarch64?
>
> I'd personally love to see gcc-5 as the global minimum version,
On Thu, Jan 07, 2021 at 11:27:22AM -0500, Theodore Ts'o wrote:
> I will note that RHEL 7 uses gcc 4.8. I personally don't have an
> objections to requiring developers using RHEL 7 to have to install a
> more modern gcc (since I use Debian Testing and gcc 10.2.1, myself,
> and gcc 5.1 is so five ye
On Thu, 7 Jan 2021 at 23:42, Eric Biggers wrote:
>
> On Thu, Jan 07, 2021 at 10:14:46PM +, Russell King - ARM Linux admin
> wrote:
> > On Thu, Jan 07, 2021 at 10:48:05PM +0100, Arnd Bergmann wrote:
> > > On Thu, Jan 7, 2021 at 5:27 PM Theodore Ts'o wrote:
> > > >
> > > > On Thu, Jan 07, 2021
On Fri, Jan 8, 2021 at 12:53 AM Darrick J. Wong wrote:
>
> On Thu, Jan 07, 2021 at 02:27:51PM -0800, Eric Biggers wrote:
> > On Thu, Jan 07, 2021 at 10:48:05PM +0100, Arnd Bergmann wrote:
> > > On Thu, Jan 7, 2021 at 5:27 PM Theodore Ts'o wrote:
> > > >
> > > > On Thu, Jan 07, 2021 at 01:37:47PM
On Thu, Jan 07, 2021 at 02:27:51PM -0800, Eric Biggers wrote:
> On Thu, Jan 07, 2021 at 10:48:05PM +0100, Arnd Bergmann wrote:
> > On Thu, Jan 7, 2021 at 5:27 PM Theodore Ts'o wrote:
> > >
> > > On Thu, Jan 07, 2021 at 01:37:47PM +, Russell King - ARM Linux admin
> > > wrote:
> > > > > The gc
On Thu, Jan 07, 2021 at 10:14:46PM +, Russell King - ARM Linux admin wrote:
> On Thu, Jan 07, 2021 at 10:48:05PM +0100, Arnd Bergmann wrote:
> > On Thu, Jan 7, 2021 at 5:27 PM Theodore Ts'o wrote:
> > >
> > > On Thu, Jan 07, 2021 at 01:37:47PM +, Russell King - ARM Linux admin
> > > wrote
On Thu, Jan 07, 2021 at 10:48:05PM +0100, Arnd Bergmann wrote:
> On Thu, Jan 7, 2021 at 5:27 PM Theodore Ts'o wrote:
> >
> > On Thu, Jan 07, 2021 at 01:37:47PM +, Russell King - ARM Linux admin
> > wrote:
> > > > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
> > > > th
On Thu, Jan 07, 2021 at 10:48:05PM +0100, Arnd Bergmann wrote:
> On Thu, Jan 7, 2021 at 5:27 PM Theodore Ts'o wrote:
> >
> > On Thu, Jan 07, 2021 at 01:37:47PM +, Russell King - ARM Linux admin
> > wrote:
> > > > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
> > > > th
On Thu, Jan 7, 2021 at 5:27 PM Theodore Ts'o wrote:
>
> On Thu, Jan 07, 2021 at 01:37:47PM +, Russell King - ARM Linux admin
> wrote:
> > > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
> > > them in my git history.
> >
> > So, do we raise the minimum gcc version for t
On Thu, Jan 7, 2021 at 2:37 PM Russell King - ARM Linux admin
wrote:
> On Thu, Jan 07, 2021 at 02:16:25PM +0100, Arnd Bergmann wrote:
> > On Thu, Jan 7, 2021 at 1:47 PM Russell King - ARM Linux admin
> > wrote:
>
> > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
> > them i
* Theodore Ts'o:
> On Thu, Jan 07, 2021 at 01:37:47PM +, Russell King - ARM Linux admin
> wrote:
>> > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
>> > them in my git history.
>>
>> So, do we raise the minimum gcc version for the kernel as a whole to 5.1
>> or just f
On Thu, Jan 07, 2021 at 01:37:47PM +, Russell King - ARM Linux admin wrote:
> > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
> > them in my git history.
>
> So, do we raise the minimum gcc version for the kernel as a whole to 5.1
> or just for aarch64?
Russell, Arnd,
On Thu, Jan 07, 2021 at 02:16:25PM +0100, Arnd Bergmann wrote:
> On Thu, Jan 7, 2021 at 1:47 PM Russell King - ARM Linux admin
> wrote:
>
> > Arnd has found via bisecting gcc:
> >
> > 7e8c2bd54af ("[AArch64] fix unsafe access to deallocated stack")
> >
> > which seems to be https://gcc.gnu.org/bu
On Thu, Jan 7, 2021 at 1:47 PM Russell King - ARM Linux admin
wrote:
> Arnd has found via bisecting gcc:
>
> 7e8c2bd54af ("[AArch64] fix unsafe access to deallocated stack")
>
> which seems to be https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293
>
> That seems to suggest that gcc-5.0.0 is also a
On Thu, Jan 07, 2021 at 11:18:41AM +, Russell King - ARM Linux admin wrote:
> On Wed, Jan 06, 2021 at 10:32:23PM +, Russell King - ARM Linux admin
> wrote:
> > On Wed, Jan 06, 2021 at 05:20:34PM +, Will Deacon wrote:
> > > With that, I see the following after ten seconds or so:
> > >
On Wed, Jan 06, 2021 at 10:32:23PM +, Russell King - ARM Linux admin wrote:
> On Wed, Jan 06, 2021 at 05:20:34PM +, Will Deacon wrote:
> > With that, I see the following after ten seconds or so:
> >
> > EXT4-fs error (device sda2): ext4_lookup:1707: inode #674497: comm
> > md5sum: iget:
On Wed, Jan 06, 2021 at 05:20:34PM +, Will Deacon wrote:
> With that, I see the following after ten seconds or so:
>
> EXT4-fs error (device sda2): ext4_lookup:1707: inode #674497: comm md5sum:
> iget: checksum invalid
>
> Russell, Mark -- does this recipe explode reliably for you too?
I'
On Wed, Jan 6, 2021 at 10:04 PM Arnd Bergmann wrote:
> On Wed, Jan 6, 2021 at 6:22 PM Will Deacon wrote:
> > On Wed, Jan 06, 2021 at 01:52:53PM +, Russell King - ARM Linux admin
> > wrote:
>
> I tried the Image-5.9.0 on a virtual machine with seven CPUs (two clusters)
> running in an M1 mac
On Wed, Jan 6, 2021 at 6:22 PM Will Deacon wrote:
> On Wed, Jan 06, 2021 at 01:52:53PM +, Russell King - ARM Linux admin
> wrote:
>
>and the resulting Image is here:
>
>
> https://mirrors.edge.kernel.org/pub/linux/kernel/people/will/bugs/rmk/Image-5.9.0
>
> 3. Using that kernel, I bo
On Wed, Jan 06, 2021 at 05:20:34PM +, Will Deacon wrote:
> I've managed to reproduce the corruption on my AMD Seattle board (8x A57).
> I haven't had a chance to dig deeper yet, but here's the recipe which works
> for me:
>
> 1. I'm using GCC 4.9.4 simply to try to get as close as I can to rmk
On Wed, Jan 06, 2021 at 01:52:53PM +, Russell King - ARM Linux admin wrote:
> On Wed, Jan 06, 2021 at 11:53:59AM +, Mark Rutland wrote:
> > ... and are you using defconfig or something else?
>
> Not sure I replied to this. I'm not using the defconfig, I've my own
> .config
>
> As I mentio
On Wed, Jan 06, 2021 at 11:53:59AM +, Mark Rutland wrote:
> ... and are you using defconfig or something else?
Not sure I replied to this. I'm not using the defconfig, I've my own
.config
As I mentioned, Will has built a 5.10 kernel using Arnd's gcc 4.9.4
and hasn't been able to reproduce it.
On Wed, Jan 06, 2021 at 11:53:59AM +, Mark Rutland wrote:
> On Tue, Jan 05, 2021 at 03:47:26PM +, Russell King - ARM Linux admin
> wrote:
> > Hi,
>
> Hi Russell,
>
> > This is an update on where I am with this long standing issue at the
> > current time.
> >
> > Since 5.4, I have been s
On Tue, Jan 05, 2021 at 03:47:26PM +, Russell King - ARM Linux admin wrote:
> Hi,
Hi Russell,
> This is an update on where I am with this long standing issue at the
> current time.
>
> Since 5.4, I have been struggling with several of my ARM64 systems, of
> different SoC vendors and differin
On Tue, Jan 05, 2021 at 10:27:28AM -0800, Darrick J. Wong wrote:
> On Tue, Jan 05, 2021 at 03:47:26PM +, Russell King - ARM Linux admin
> wrote:
> > Hi,
> >
> > This is an update on where I am with this long standing issue at the
> > current time.
> >
> > Since 5.4, I have been struggling wi
On Tue, Jan 05, 2021 at 03:47:26PM +, Russell King - ARM Linux admin wrote:
> Hi,
>
> This is an update on where I am with this long standing issue at the
> current time.
>
> Since 5.4, I have been struggling with several of my ARM64 systems, of
> different SoC vendors and differing filesyste
Hi,
This is an update on where I am with this long standing issue at the
current time.
Since 5.4, I have been struggling with several of my ARM64 systems, of
different SoC vendors and differing filesystem media, were sporadically
reporting inode checksum failures on their root filesystems. The t
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