linux-kernel - Re: [syzbot] BUG: sleeping function called from invalid context in hci_cmd_sync

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Date:   Wed, 08 Dec 2021 17:59:06 -0800
From:   syzbot <syzbot+485cc00ea7cf41dfdbf1@...kaller.appspotmail.com>
To:     Thinh.Nguyen@...opsys.com, bberg@...hat.com, changbin.du@...el.com,
        christian.brauner@...ntu.com, davem@...emloft.net,
        edumazet@...gle.com, gregkh@...uxfoundation.org,
        johan.hedberg@...il.com, kuba@...nel.org,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, luiz.dentz@...il.com,
        luiz.von.dentz@...el.com, marcel@...tmann.org,
        mathias.nyman@...ux.intel.com, netdev@...r.kernel.org,
        stern@...land.harvard.edu, syzkaller-bugs@...glegroups.com,
        yajun.deng@...ux.dev
Subject: Re: [syzbot] BUG: sleeping function called from invalid context in hci_cmd_sync_cancel

syzbot has bisected this issue to:

commit c97a747efc93f94a4ad6c707972dfbf8d774edf9
Author: Benjamin Berg <bberg@...hat.com>
Date:   Fri Dec 3 14:59:02 2021 +0000

    Bluetooth: btusb: Cancel sync commands for certain URB errors

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10a0fdc5b00000
start commit:   4eee8d0b64ec Add linux-next specific files for 20211208
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12a0fdc5b00000
console output: https://syzkaller.appspot.com/x/log.txt?x=14a0fdc5b00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=20b74d9da4ce1ef1
dashboard link: https://syzkaller.appspot.com/bug?extid=485cc00ea7cf41dfdbf1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13e7e955b00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10ed3641b00000

Reported-by: syzbot+485cc00ea7cf41dfdbf1@...kaller.appspotmail.com
Fixes: c97a747efc93 ("Bluetooth: btusb: Cancel sync commands for certain URB errors")

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