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

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Message-ID: <68b55245.050a0220.3db4df.01bc.GAE@google.com>
Date: Mon, 01 Sep 2025 00:59:01 -0700
From: syzbot <syzbot+cba6270878c89ed64a2d@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, brauner@...nel.org, dave@...olabs.net, 
	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)

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()

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