linux-next boot error: can't ssh into the instance (3)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 519ead8f Add linux-next specific files for 20191118
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14653416e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=652dd3906d691711
dashboard link: https://syzkaller.appspot.com/bug?extid=ce541a23cf58c1f6b1b1
compiler: gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+ce541a...@syzkaller.appspotmail.com



---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

[Dmitry Vyukov]

On Mon, Nov 18, 2019 at 5:35 PM syzbot
<syzbot+ce541a...@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 519ead8f Add linux-next specific files for 20191118
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=14653416e00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=652dd3906d691711
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce541a23cf58c1f6b1b1
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+ce541a...@syzkaller.appspotmail.com

Looks at the console output, this seems to be related to:

commit eb09878e13013f0faee0a97562da557c4026b8a1
Author: Yunfeng Ye <yeyu...@huawei.com>
Date: Thu Nov 14 15:16:24 2019 +0800

ACPI: sysfs: Change ACPI_MASKABLE_GPE_MAX to 0x100

+drivers/acpi/sysfs.c maintainers

> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzk...@googlegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>

> --
> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
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[Andy Shevchenko]

On Mon, Nov 18, 2019 at 7:16 PM Dmitry Vyukov <dvy...@google.com> wrote:
>
> On Mon, Nov 18, 2019 at 5:35 PM syzbot
> <syzbot+ce541a...@syzkaller.appspotmail.com> wrote:
> >
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit: 519ead8f Add linux-next specific files for 20191118
> > git tree: linux-next
> > console output: https://syzkaller.appspot.com/x/log.txt?x=14653416e00000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=652dd3906d691711
> > dashboard link: https://syzkaller.appspot.com/bug?extid=ce541a23cf58c1f6b1b1
> > compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> >
> > Unfortunately, I don't have any reproducer for this crash yet.
> >
> > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > Reported-by: syzbot+ce541a...@syzkaller.appspotmail.com
>
>
> Looks at the console output, this seems to be related to:
>
> commit eb09878e13013f0faee0a97562da557c4026b8a1
> Author: Yunfeng Ye <yeyu...@huawei.com>
> Date: Thu Nov 14 15:16:24 2019 +0800
>
> ACPI: sysfs: Change ACPI_MASKABLE_GPE_MAX to 0x100
>
> +drivers/acpi/sysfs.c maintainers

Just bisected to the same


# good: [ec5385196779fb927e7d8d5bf31bef14d7ce98ed] Merge tag
'iommu-fixes-v5.4-rc7' of git://git.kernel.org/pub/sc
m/linux/kernel/git/joro/iommu
git bisect good ec5385196779fb927e7d8d5bf31bef14d7ce98ed
# bad: [519ead8f6a3215406afc6e56c596388a690f2edc] Add linux-next
specific files for 20191118
git bisect bad 519ead8f6a3215406afc6e56c596388a690f2edc
# bad: [0f2c488e9643bb9f3570b2beba3f74a29521a941] Merge
remote-tracking branch 'crypto/master'
git bisect bad 0f2c488e9643bb9f3570b2beba3f74a29521a941
# good: [2cee210493eb3afdc3f6c1dc9f1513aa3e0f9c94] Merge
remote-tracking branch 'pstore/for-next/pstore'
git bisect good 2cee210493eb3afdc3f6c1dc9f1513aa3e0f9c94
# good: [50bef71900d25433418529476e7ea8f5826f6c2d] Merge tag
'wireless-drivers-next-2019-11-15' of git://git.kerne
l.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
git bisect good 50bef71900d25433418529476e7ea8f5826f6c2d
# good: [a1db75140194a7de66f7b839e20a434e15f421b5] Merge
remote-tracking branch 'v4l-dvb/master'
git bisect good a1db75140194a7de66f7b839e20a434e15f421b5
# bad: [3d85aae50537cb659c28ba803dcf0563c00fba53] Merge
remote-tracking branch 'net-next/master'
git bisect bad 3d85aae50537cb659c28ba803dcf0563c00fba53
# bad: [1fd383f2408eeb9ca598e7141c5259dd81266e6d] Merge
remote-tracking branch 'pm/linux-next'
git bisect bad 1fd383f2408eeb9ca598e7141c5259dd81266e6d
# good: [7ddb1e341b377a64ce288f3fb546e51d9a963b20] Merge branches
'pm-sleep', 'pm-tools' and 'powercap' into linux
-next
git bisect good 7ddb1e341b377a64ce288f3fb546e51d9a963b20
# good: [678de5f0c7507eadf47ec55db584c643667d90e1] Merge branch
'pm-cpuidle' into linux-next
git bisect good 678de5f0c7507eadf47ec55db584c643667d90e1
# good: [562c41002218161c11e5b606866a07d11edab1fb] Merge branch
'pm-opp' into linux-next
git bisect good 562c41002218161c11e5b606866a07d11edab1fb
# good: [5b017fcd2f396b370a30bc72630b80bd6fbd7b05] Merge branches
'pm-sleep', 'pm-avs' and 'pm-domains' into linux
-next
git bisect good 5b017fcd2f396b370a30bc72630b80bd6fbd7b05
# good: [967c2e327214fff3b8967271dae6f5a868cbc94c] Merge branch
'pm-cpuidle' into linux-next
git bisect good 967c2e327214fff3b8967271dae6f5a868cbc94c
# good: [dc85e40f885d1614ad5e685d7f7794cb912e2f31] Merge branch
'pm-cpufreq' into linux-next
git bisect good dc85e40f885d1614ad5e685d7f7794cb912e2f31
# bad: [998570b92107eb94faa5c6536f1cba46272c1185] Merge branch
'acpi-sysfs' into linux-next
git bisect bad 998570b92107eb94faa5c6536f1cba46272c1185

>
>
> > ---
> > This bug is generated by a bot. It may contain errors.
> > See https://goo.gl/tpsmEJ for more information about syzbot.
> > syzbot engineers can be reached at syzk...@googlegroups.com.
> >
> > syzbot will keep track of this bug report. See:
> > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> >
> > --
> > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bug...@googlegroups.com.
> > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/000000000000ee674f0597a18709%40google.com.

--
With Best Regards,
Andy Shevchenko

[Eric Biggers]

On Mon, Nov 18, 2019 at 07:37:27PM +0200, Andy Shevchenko wrote:
> On Mon, Nov 18, 2019 at 7:16 PM Dmitry Vyukov <dvy...@google.com> wrote:
> >
> > On Mon, Nov 18, 2019 at 5:35 PM syzbot
> > <syzbot+ce541a...@syzkaller.appspotmail.com> wrote:
> > >
> > > Hello,
> > >
> > > syzbot found the following crash on:
> > >
> > > HEAD commit: 519ead8f Add linux-next specific files for 20191118
> > > git tree: linux-next
> > > console output: https://syzkaller.appspot.com/x/log.txt?x=14653416e00000
> > > kernel config: https://syzkaller.appspot.com/x/.config?x=652dd3906d691711
> > > dashboard link: https://syzkaller.appspot.com/bug?extid=ce541a23cf58c1f6b1b1
> > > compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> > >
> > > Unfortunately, I don't have any reproducer for this crash yet.
> > >
> > > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > > Reported-by: syzbot+ce541a...@syzkaller.appspotmail.com
> >
> >
> > Looks at the console output, this seems to be related to:
> >
> > commit eb09878e13013f0faee0a97562da557c4026b8a1
> > Author: Yunfeng Ye <yeyu...@huawei.com>
> > Date: Thu Nov 14 15:16:24 2019 +0800
> >
> > ACPI: sysfs: Change ACPI_MASKABLE_GPE_MAX to 0x100
> >
> > +drivers/acpi/sysfs.c maintainers
>
> Just bisected to the same
>

I had to revert this in order to boot linux-next as well. Rafael, can this
please be reverted?

Thanks,

- Eric

[Rafael J. Wysocki]

Dropped already from my linux-next branch, should not be there in
linux-next any more.

[Eric Biggers]

next-20191119 works for me, thanks for the quick revert.

Let's invalidate this syzbot report:

#syz invalid