linux-kernel - Re: [syzbot] [overlayfs?] possible deadlock in seq_read

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Date: Fri, 26 Jan 2024 18:28:04 -0800
From: syzbot <syzbot+da4f9f61f96525c62cc7@...kaller.appspotmail.com>
To: amir73il@...il.com, axboe@...nel.dk, brauner@...nel.org, 
	dhowells@...hat.com, hch@....de, jack@...e.cz, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-unionfs@...r.kernel.org, 
	miklos@...redi.hu, rafael@...nel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [overlayfs?] possible deadlock in seq_read_iter (2)

syzbot suspects this issue was fixed by commit:

commit da40448ce4eb4de18eb7b0db61dddece32677939
Author: Amir Goldstein <amir73il@...il.com>
Date:   Thu Nov 30 14:16:23 2023 +0000

    fs: move file_start_write() into direct_splice_actor()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=105aa1a0180000
start commit:   2cf4f94d8e86 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=e5751b3a2226135d
dashboard link: https://syzkaller.appspot.com/bug?extid=da4f9f61f96525c62cc7
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=176a4f49e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154aa8d6e80000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: fs: move file_start_write() into direct_splice_actor()

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