linux-kernel - Re: [syzbot] [exfat?] INFO: task hung in fat_write

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Date:   Fri, 03 Nov 2023 05:27:04 -0700
From:   syzbot <syzbot+6f75830acb2e4cdc8e50@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, brauner@...nel.org,
        hirofumi@...l.parknet.co.jp, linkinjeon@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        sj1557.seo@...sung.com, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk, willy@...radead.org
Subject: Re: [syzbot] [exfat?] INFO: task hung in fat_write_inode

syzbot has bisected this issue to:

commit fb96458067a8043c256befe4bfe4fb3ebc81de1b
Author: Matthew Wilcox (Oracle) <willy@...radead.org>
Date:   Mon Oct 16 20:10:48 2023 +0000

    buffer: return bool from grow_dev_folio()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=154b4ef7680000
start commit:   2dac75696c6d Add linux-next specific files for 20231018
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=174b4ef7680000
console output: https://syzkaller.appspot.com/x/log.txt?x=134b4ef7680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6f8545e1ef7a2b66
dashboard link: https://syzkaller.appspot.com/bug?extid=6f75830acb2e4cdc8e50
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=148fed9d680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1019f523680000

Reported-by: syzbot+6f75830acb2e4cdc8e50@...kaller.appspotmail.com
Fixes: fb96458067a8 ("buffer: return bool from grow_dev_folio()")

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