linux-kernel - Re: [syzbot] [mm?] [fs?] BUG: sleeping function called from invalid context in folio_mc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <67e8c6af.050a0220.1547ec.0089.GAE@google.com>
Date: Sat, 29 Mar 2025 21:21:03 -0700
From: syzbot <syzbot+f3c6fda1297c748a7076@...kaller.appspotmail.com>
To: da.gomez@...sung.com, dave@...olabs.net, linux-kernel@...r.kernel.org, 
	mcgrof@...nel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [mm?] [fs?] BUG: sleeping function called from invalid
 context in folio_mc_copy

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
unregister_netdevice: waiting for DEV to become free

unregister_netdevice: waiting for batadv0 to become free. Usage count = 3

Tested on:

commit:         462c2cb1 mm/migrate: avoid atomic context on buffer_mi..
git tree:       https://github.com/linux-kdevops/linux.git 20250529-ext4-migration-fix
console output: https://syzkaller.appspot.com/x/log.txt?x=141e0404580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1b79fdf1dd3782cc
dashboard link: https://syzkaller.appspot.com/bug?extid=f3c6fda1297c748a7076
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.