linux-kernel - Re: [syzbot] [hfs?] INFO: task hung in deactivate

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Message-ID: <20250902144655.5em4trxkeks7nwgx@offworld>
Date: Tue, 2 Sep 2025 07:46:55 -0700
From: Davidlohr Bueso <dave@...olabs.net>
To: syzbot <syzbot+cba6270878c89ed64a2d@...kaller.appspotmail.com>
Cc: akpm@...ux-foundation.org, brauner@...nel.org, frank.li@...o.com,
	glaubitz@...sik.fu-berlin.de, jack@...e.cz,
	jfs-discussion@...ts.sourceforge.net, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, mcgrof@...nel.org,
	shaggy@...nel.org, slava@...eyko.com,
	syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk,
	willy@...radead.org
Subject: Re: [syzbot] [hfs?] INFO: task hung in deactivate_super (3)

On Mon, 01 Sep 2025, syzbot wrote:

>syzbot has bisected this issue to:
>
>commit 5b67d43976828dea2394eae2556b369bb7a61f64
>Author: Davidlohr Bueso <dave@...olabs.net>
>Date:   Fri Apr 18 01:59:17 2025 +0000
>
>    fs/buffer: use sleeping version of __find_get_block()

I don't think this bisection is right, considering this issue was first
triggered last year (per the dashboard).

Thanks,
Davidlohr

>
>bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=101ba1f0580000
>start commit:   c8bc81a52d5a Merge tag 'arm64-fixes' of git://git.kernel.o..
>git tree:       upstream
>final oops:     https://syzkaller.appspot.com/x/report.txt?x=121ba1f0580000
>console output: https://syzkaller.appspot.com/x/log.txt?x=141ba1f0580000
>kernel config:  https://syzkaller.appspot.com/x/.config?x=bd9738e00c1bbfb4
>dashboard link: https://syzkaller.appspot.com/bug?extid=cba6270878c89ed64a2d
>syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10857a62580000
>C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14f5ce34580000
>
>Reported-by: syzbot+cba6270878c89ed64a2d@...kaller.appspotmail.com
>Fixes: 5b67d4397682 ("fs/buffer: use sleeping version of __find_get_block()")
>
>For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>