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* Fwd: remove ext4-fix-superblock-checksum-calculation-race.patch ?
       [not found] <CAABuPhZKJncNoVb3-um8WTdyvffvcYqPKDUA_AcpmEZQrMshTg@mail.gmail.com>
@ 2020-11-03 17:24 ` Costa Sapuntzakis
  2020-11-03 18:30   ` Greg KH
  0 siblings, 1 reply; 5+ messages in thread
From: Costa Sapuntzakis @ 2020-11-03 17:24 UTC (permalink / raw)
  To: stable, Jan Kara

syzbot found https://syzkaller.appspot.com/bug?extid=7a4ba6a239b91a126c28
which shows we can try to sleep under a spinlock in an error path.

-Costa

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: Fwd: remove ext4-fix-superblock-checksum-calculation-race.patch ?
  2020-11-03 17:24 ` Fwd: remove ext4-fix-superblock-checksum-calculation-race.patch ? Costa Sapuntzakis
@ 2020-11-03 18:30   ` Greg KH
  2020-11-03 20:45     ` Costa Sapuntzakis
  0 siblings, 1 reply; 5+ messages in thread
From: Greg KH @ 2020-11-03 18:30 UTC (permalink / raw)
  To: Costa Sapuntzakis; +Cc: stable, Jan Kara

On Tue, Nov 03, 2020 at 09:24:57AM -0800, Costa Sapuntzakis wrote:
> syzbot found https://syzkaller.appspot.com/bug?extid=7a4ba6a239b91a126c28
> which shows we can try to sleep under a spinlock in an error path.

Do you have a patch for this?

confused,

greg k-h

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: Fwd: remove ext4-fix-superblock-checksum-calculation-race.patch ?
  2020-11-03 18:30   ` Greg KH
@ 2020-11-03 20:45     ` Costa Sapuntzakis
  2020-11-03 21:01       ` Greg KH
  2020-11-04  9:13       ` Greg KH
  0 siblings, 2 replies; 5+ messages in thread
From: Costa Sapuntzakis @ 2020-11-03 20:45 UTC (permalink / raw)
  To: Greg KH; +Cc: stable, Jan Kara

On Tue, Nov 3, 2020 at 10:30 AM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Tue, Nov 03, 2020 at 09:24:57AM -0800, Costa Sapuntzakis wrote:
> > syzbot found https://syzkaller.appspot.com/bug?extid=7a4ba6a239b91a126c28
> > which shows we can try to sleep under a spinlock in an error path.
>
> Do you have a patch for this?

Sorry, I put too much in the subject. I received e-mail this morning
(Pacific Standard Time) that
ext4-fix-superblock-checksum-calculation-race.patch had been
incorporated into various stable branches. Yesterday, I received an
e-mail from Hillf Danton (hdanton@sina.com) that syzbot had found a
bug in the patch.

Hillf Danton (hdanton@sina.com) has made a patch for the patch and it
is being reviewed.

Best,
-Costa

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: Fwd: remove ext4-fix-superblock-checksum-calculation-race.patch ?
  2020-11-03 20:45     ` Costa Sapuntzakis
@ 2020-11-03 21:01       ` Greg KH
  2020-11-04  9:13       ` Greg KH
  1 sibling, 0 replies; 5+ messages in thread
From: Greg KH @ 2020-11-03 21:01 UTC (permalink / raw)
  To: Costa Sapuntzakis; +Cc: stable, Jan Kara

On Tue, Nov 03, 2020 at 12:45:24PM -0800, Costa Sapuntzakis wrote:
> On Tue, Nov 3, 2020 at 10:30 AM Greg KH <gregkh@linuxfoundation.org> wrote:
> >
> > On Tue, Nov 03, 2020 at 09:24:57AM -0800, Costa Sapuntzakis wrote:
> > > syzbot found https://syzkaller.appspot.com/bug?extid=7a4ba6a239b91a126c28
> > > which shows we can try to sleep under a spinlock in an error path.
> >
> > Do you have a patch for this?
> 
> Sorry, I put too much in the subject. I received e-mail this morning
> (Pacific Standard Time) that
> ext4-fix-superblock-checksum-calculation-race.patch had been
> incorporated into various stable branches. Yesterday, I received an
> e-mail from Hillf Danton (hdanton@sina.com) that syzbot had found a
> bug in the patch.
> 
> Hillf Danton (hdanton@sina.com) has made a patch for the patch and it
> is being reviewed.

We will be glad to queue up the fix when it hits Linus's tree as well.

thanks,

greg k-h

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: Fwd: remove ext4-fix-superblock-checksum-calculation-race.patch ?
  2020-11-03 20:45     ` Costa Sapuntzakis
  2020-11-03 21:01       ` Greg KH
@ 2020-11-04  9:13       ` Greg KH
  1 sibling, 0 replies; 5+ messages in thread
From: Greg KH @ 2020-11-04  9:13 UTC (permalink / raw)
  To: Costa Sapuntzakis; +Cc: stable, Jan Kara

On Tue, Nov 03, 2020 at 12:45:24PM -0800, Costa Sapuntzakis wrote:
> On Tue, Nov 3, 2020 at 10:30 AM Greg KH <gregkh@linuxfoundation.org> wrote:
> >
> > On Tue, Nov 03, 2020 at 09:24:57AM -0800, Costa Sapuntzakis wrote:
> > > syzbot found https://syzkaller.appspot.com/bug?extid=7a4ba6a239b91a126c28
> > > which shows we can try to sleep under a spinlock in an error path.
> >
> > Do you have a patch for this?
> 
> Sorry, I put too much in the subject. I received e-mail this morning
> (Pacific Standard Time) that
> ext4-fix-superblock-checksum-calculation-race.patch had been
> incorporated into various stable branches. Yesterday, I received an
> e-mail from Hillf Danton (hdanton@sina.com) that syzbot had found a
> bug in the patch.
> 
> Hillf Danton (hdanton@sina.com) has made a patch for the patch and it
> is being reviewed.

Ah, ok, that makes more sense, now dropped from everywhere, thanks.

greg k-h

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2020-11-04  9:13 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
     [not found] <CAABuPhZKJncNoVb3-um8WTdyvffvcYqPKDUA_AcpmEZQrMshTg@mail.gmail.com>
2020-11-03 17:24 ` Fwd: remove ext4-fix-superblock-checksum-calculation-race.patch ? Costa Sapuntzakis
2020-11-03 18:30   ` Greg KH
2020-11-03 20:45     ` Costa Sapuntzakis
2020-11-03 21:01       ` Greg KH
2020-11-04  9:13       ` Greg KH

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