Re: [syzbot] [xfs?] INFO: task hung in xfs_buf_item_unpin (2)

From: syzbot
Date: Sun Aug 18 2024 - 00:36:11 EST


syzbot has bisected this issue to:

commit 3eb96946f0be6bf447cbdf219aba22bc42672f92
Author: Christoph Hellwig <hch@xxxxxx>
Date: Wed May 24 06:05:38 2023 +0000

block: make bio_check_eod work for zero sized devices

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=178bfdcb980000
start commit: 85652baa895b Merge tag 'block-6.11-20240824' of git://git...
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=144bfdcb980000
console output: https://syzkaller.appspot.com/x/log.txt?x=104bfdcb980000
kernel config: https://syzkaller.appspot.com/x/.config?x=92c0312151c4e32e
dashboard link: https://syzkaller.appspot.com/bug?extid=837bcd54843dd6262f2f
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12350ad5980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=147927c5980000

Reported-by: syzbot+837bcd54843dd6262f2f@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 3eb96946f0be ("block: make bio_check_eod work for zero sized devices")

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