From: syzbot <syzbot+c4f8158debe41f3bca37@syzkaller.appspotmail.com>
To: souradiptodas6@gmail.com
Cc: souradiptodas6@gmail.com, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [mm?] WARNING: bad unlock balance in folios_put_refs
Date: Sat, 25 Apr 2026 11:39:03 -0700 [thread overview]
Message-ID: <69ed0a47.a00a0220.1901e8.0015.GAE@google.com> (raw)
In-Reply-To: <CAKVbAB0A83r8BTn_WojoryjtsAKfrowHNSautx_6_uhi638V0Q@mail.gmail.com>
> #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
This crash does not have a reproducer. I cannot test it.
> master
>
> diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
> index dc3fa6877..1d5bef2e4 100644
> --- a/include/linux/memcontrol.h
> +++ b/include/linux/memcontrol.h
> @@ -1524,6 +1524,7 @@ static inline void
> folio_lruvec_relock_irqsave(struct folio *folio,
> return;
>
> lruvec_unlock_irqrestore(*lruvecp, *flags);
> + *lruvecp = NULL;
> }
>
> *lruvecp = folio_lruvec_lock_irqsave(folio, flags);
> --
> 2.53.0
next parent reply other threads:[~2026-04-25 18:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAKVbAB0A83r8BTn_WojoryjtsAKfrowHNSautx_6_uhi638V0Q@mail.gmail.com>
2026-04-25 18:39 ` syzbot [this message]
2026-04-24 5:09 [syzbot] [mm?] WARNING: bad unlock balance in folios_put_refs syzbot
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