Re: Linux 5.8-rc1

2020-06-16 Thread Arvind Sankar
On Wed, Jun 17, 2020 at 12:00:14AM +0200, Gabriel C wrote: > Am Di., 16. Juni 2020 um 23:25 Uhr schrieb Arvind Sankar > : > > > > On Tue, Jun 16, 2020 at 11:17:08PM +0200, Gabriel C wrote: > > > Am Di., 16. Juni 2020 um 22:33 Uhr schrieb Arvind Sankar > > > : > > > > > > > > Can you attach the

Re: Linux 5.8-rc1

2020-06-16 Thread Gabriel C
Am Di., 16. Juni 2020 um 23:25 Uhr schrieb Arvind Sankar : > > On Tue, Jun 16, 2020 at 11:17:08PM +0200, Gabriel C wrote: > > Am Di., 16. Juni 2020 um 22:33 Uhr schrieb Arvind Sankar > > : > > > > > > Can you attach the output of gcc -dumpspecs and gcc -v? I suspect your > > > compiler enables

Re: Linux 5.8-rc1

2020-06-16 Thread Gabriel C
Am Di., 16. Juni 2020 um 23:17 Uhr schrieb Gabriel C : > > Am Di., 16. Juni 2020 um 22:33 Uhr schrieb Arvind Sankar > : > > Does this patch help? > > > > I'll test in a bit and let you know. With the patch the kernel compiles fine. > > diff --git a/arch/x86/purgatory/Makefile

Re: Linux 5.8-rc1

2020-06-16 Thread Arvind Sankar
On Tue, Jun 16, 2020 at 11:17:08PM +0200, Gabriel C wrote: > Am Di., 16. Juni 2020 um 22:33 Uhr schrieb Arvind Sankar > : > > > > Can you attach the output of gcc -dumpspecs and gcc -v? I suspect your > > compiler enables stack protector by default. My distro compiler does > > that too, but not if

Re: Linux 5.8-rc1

2020-06-16 Thread Gabriel C
Am Di., 16. Juni 2020 um 22:37 Uhr schrieb Borislav Petkov : > > On Tue, Jun 16, 2020 at 10:11:46PM +0200, Gabriel C wrote: > > I didn't look closer at that but from the error, it seems to be, > > some missing -fstack-protector* vs -fno-stack-protector* checks > > somewhere. > > Can you give exact

Re: Linux 5.8-rc1

2020-06-16 Thread Gabriel C
Am Di., 16. Juni 2020 um 22:33 Uhr schrieb Arvind Sankar : > > On Tue, Jun 16, 2020 at 10:11:46PM +0200, Gabriel C wrote: > > * Am So., 14. Juni 2020 um 22:44 Uhr schrieb Linus Torvalds > > : > > > > Hello, > > > > > So I didn't really expect this, but 5.8 looks to be one of our biggest > > >

Re: Linux 5.8-rc1

2020-06-16 Thread Borislav Petkov
On Tue, Jun 16, 2020 at 10:11:46PM +0200, Gabriel C wrote: > I didn't look closer at that but from the error, it seems to be, > some missing -fstack-protector* vs -fno-stack-protector* checks > somewhere. Can you give exact .config? Also, what compiler exactly? I have

Re: Linux 5.8-rc1

2020-06-16 Thread Arvind Sankar
On Tue, Jun 16, 2020 at 10:11:46PM +0200, Gabriel C wrote: > * Am So., 14. Juni 2020 um 22:44 Uhr schrieb Linus Torvalds > : > > Hello, > > > So I didn't really expect this, but 5.8 looks to be one of our biggest > > releases of all time. > > > > I hit a compiler error caused by

Re: Linux 5.8-rc1

2020-06-16 Thread Gabriel C
* Am So., 14. Juni 2020 um 22:44 Uhr schrieb Linus Torvalds : Hello, > So I didn't really expect this, but 5.8 looks to be one of our biggest > releases of all time. > I hit a compiler error caused by e4160b2e4b02377c67f8ecd05786811598f39acd. x86/purgatory: Fail the build if purgatory.ro has

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Linus Torvalds
On Mon, Jun 15, 2020 at 2:18 PM Shuah Khan wrote: > > Yeah. I should have thought about adding module path. With module path > added, I get better results: > > [ 15.341267] ? snd_pcm_hw_params (./include/linux/string.h:391 > /home/shuah/lkml/linux_5.8/sound/core/pcm_native.c:759) snd_pcm > [

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Shuah Khan
On 6/15/20 2:55 PM, Linus Torvalds wrote: On Mon, Jun 15, 2020 at 1:41 PM Shuah Khan wrote: I have CONFIG_DEBUG_INFO enabled. Ran the stack trace through scripts/decode_stacktrace.sh Thanks. It looks like it isn't needed and people already know what the cause is. Also, sadly the stack

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Shuah Khan
On 6/15/20 2:53 PM, Shuah Khan wrote: On 6/15/20 1:57 PM, Takashi Iwai wrote: On Mon, 15 Jun 2020 20:48:11 +0200, Shuah Khan wrote: I am seeing the following problem on my system. I haven't started debug yet. Is this a known issue? Yes, the recent fix by David should paper over it:

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Linus Torvalds
On Mon, Jun 15, 2020 at 1:41 PM Shuah Khan wrote: > > I have CONFIG_DEBUG_INFO enabled. Ran the stack trace through > scripts/decode_stacktrace.sh Thanks. It looks like it isn't needed and people already know what the cause is. Also, sadly the stack trace decoding didn't end up as useful as it

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Shuah Khan
On 6/15/20 1:57 PM, Takashi Iwai wrote: On Mon, 15 Jun 2020 20:48:11 +0200, Shuah Khan wrote: I am seeing the following problem on my system. I haven't started debug yet. Is this a known issue? Yes, the recent fix by David should paper over it:

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Shuah Khan
On 6/15/20 1:48 PM, Linus Torvalds wrote: On Mon, Jun 15, 2020 at 11:48 AM Shuah Khan wrote: I am seeing the following problem on my system. I haven't started debug yet. Is this a known issue? [9.791309] BUG: unable to handle page fault for address: b1e78165d000 [9.791328] #PF:

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Takashi Iwai
On Mon, 15 Jun 2020 20:48:11 +0200, Shuah Khan wrote: > > I am seeing the following problem on my system. I haven't started debug > yet. Is this a known issue? Yes, the recent fix by David should paper over it:

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread Linus Torvalds
On Mon, Jun 15, 2020 at 11:48 AM Shuah Khan wrote: > > I am seeing the following problem on my system. I haven't started debug > yet. Is this a known issue? > > [9.791309] BUG: unable to handle page fault for address: > b1e78165d000 > [9.791328] #PF: supervisor write access in kernel

Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

2020-06-15 Thread David Rientjes
On Mon, 15 Jun 2020, Shuah Khan wrote: > I am seeing the following problem on my system. I haven't started debug > yet. Is this a known issue? > > [9.791309] BUG: unable to handle page fault for address: b1e78165d000 > [9.791328] #PF: supervisor write access in kernel mode > [