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* Re: general protection fault in put_pid
       [not found] <00000000000051ee78057cc4d98f@google.com>
@ 2019-03-27 20:10 ` syzbot
  2019-03-27 20:27   ` Matthew Wilcox
  2019-11-07 13:42 ` syzbot
  1 sibling, 1 reply; 4+ messages in thread
From: syzbot @ 2019-03-27 20:10 UTC (permalink / raw)
  To: akpm, clm, dan.carpenter, dave, dhowells, dsterba, dvyukov,
	ebiederm, jbacik, ktkhai, ktsanaktsidis, linux-btrfs,
	linux-kernel, linux-mm, manfred, mhocko, nborisov,
	penguin-kernel, penguin-kernel, rppt, sfr, shakeelb,
	syzkaller-bugs, vdavydov.dev, willy

syzbot has bisected this bug to:

commit b9b8a41adeff5666b402996020b698504c927353
Author: Dan Carpenter <dan.carpenter@oracle.com>
Date:   Mon Aug 20 08:25:33 2018 +0000

     btrfs: use after free in btrfs_quota_enable

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14155a1f200000
start commit:   f5d58277 Merge branch 'for-linus' of git://git.kernel.org/..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=16155a1f200000
console output: https://syzkaller.appspot.com/x/log.txt?x=12155a1f200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c8970c89a0efbb23
dashboard link: https://syzkaller.appspot.com/bug?extid=1145ec2e23165570c3ac
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16803afb400000

Reported-by: syzbot+1145ec2e23165570c3ac@syzkaller.appspotmail.com
Fixes: b9b8a41adeff ("btrfs: use after free in btrfs_quota_enable")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: general protection fault in put_pid
  2019-03-27 20:10 ` general protection fault in put_pid syzbot
@ 2019-03-27 20:27   ` Matthew Wilcox
  2019-03-27 22:51     ` David Sterba
  0 siblings, 1 reply; 4+ messages in thread
From: Matthew Wilcox @ 2019-03-27 20:27 UTC (permalink / raw)
  To: syzbot
  Cc: akpm, clm, dan.carpenter, dave, dhowells, dsterba, dvyukov,
	ebiederm, jbacik, ktkhai, ktsanaktsidis, linux-btrfs,
	linux-kernel, linux-mm, manfred, mhocko, nborisov,
	penguin-kernel, rppt, sfr, shakeelb, syzkaller-bugs,
	vdavydov.dev

On Wed, Mar 27, 2019 at 01:10:01PM -0700, syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit b9b8a41adeff5666b402996020b698504c927353
> Author: Dan Carpenter <dan.carpenter@oracle.com>
> Date:   Mon Aug 20 08:25:33 2018 +0000
> 
>     btrfs: use after free in btrfs_quota_enable

Not plausible.  Try again.


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: general protection fault in put_pid
  2019-03-27 20:27   ` Matthew Wilcox
@ 2019-03-27 22:51     ` David Sterba
  0 siblings, 0 replies; 4+ messages in thread
From: David Sterba @ 2019-03-27 22:51 UTC (permalink / raw)
  To: Matthew Wilcox
  Cc: syzbot, akpm, clm, dan.carpenter, dave, dhowells, dsterba,
	dvyukov, ebiederm, jbacik, ktkhai, ktsanaktsidis, linux-btrfs,
	linux-kernel, linux-mm, manfred, mhocko, nborisov,
	penguin-kernel, rppt, sfr, shakeelb, syzkaller-bugs,
	vdavydov.dev

On Wed, Mar 27, 2019 at 01:27:12PM -0700, Matthew Wilcox wrote:
> On Wed, Mar 27, 2019 at 01:10:01PM -0700, syzbot wrote:
> > syzbot has bisected this bug to:
> > 
> > commit b9b8a41adeff5666b402996020b698504c927353
> > Author: Dan Carpenter <dan.carpenter@oracle.com>
> > Date:   Mon Aug 20 08:25:33 2018 +0000
> > 
> >     btrfs: use after free in btrfs_quota_enable
> 
> Not plausible.  Try again.

Agreed, grep for 'btrfs' in the console log does not show anything, ie.
no messages, slab caches nor functions on the stack.


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: general protection fault in put_pid
       [not found] <00000000000051ee78057cc4d98f@google.com>
  2019-03-27 20:10 ` general protection fault in put_pid syzbot
@ 2019-11-07 13:42 ` syzbot
  1 sibling, 0 replies; 4+ messages in thread
From: syzbot @ 2019-11-07 13:42 UTC (permalink / raw)
  To: akpm, aryabinin, bp, cai, clm, dan.carpenter, dave, dhowells,
	dsterba, dsterba, dvyukov, ebiederm, glider, hpa, jbacik, ktkhai,
	ktsanaktsidis, linux-btrfs, linux-kernel, linux-mm, manfred,
	mhocko, mingo, nborisov, penguin-kernel, penguin-kernel, rppt,
	sfr, shakeelb, syzkaller-bugs, tglx, torvalds, vdavydov.dev,
	willy

syzbot suspects this bug was fixed by commit:

commit a8e911d13540487942d53137c156bd7707f66e5d
Author: Qian Cai <cai@lca.pw>
Date:   Fri Feb 1 22:20:20 2019 +0000

     x86_64: increase stack size for KASAN_EXTRA

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10364f3c600000
start commit:   f5d58277 Merge branch 'for-linus' of git://git.kernel.org/..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=c8970c89a0efbb23
dashboard link: https://syzkaller.appspot.com/bug?extid=1145ec2e23165570c3ac
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16803afb400000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: x86_64: increase stack size for KASAN_EXTRA

For information about bisection process see: https://goo.gl/tpsmEJ#bisection


^ permalink raw reply	[flat|nested] 4+ messages in thread

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Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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     [not found] <00000000000051ee78057cc4d98f@google.com>
2019-03-27 20:10 ` general protection fault in put_pid syzbot
2019-03-27 20:27   ` Matthew Wilcox
2019-03-27 22:51     ` David Sterba
2019-11-07 13:42 ` syzbot

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