Re: [syzbot] [bpf?] [net?] KASAN: slab-use-after-free Read in bq_xmit_all

[syzbot]

syzbot has bisected this issue to:

commit fecef4cd42c689a200bdd39e6fffa71475904bc1
Author: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Date:   Thu Jul 4 14:48:15 2024 +0000

    tun: Assign missing bpf_net_context.

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12ddc995980000
start commit:   720261cfc732 Merge tag 'bcachefs-2024-07-18.2' of https://..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=11ddc995980000
console output: https://syzkaller.appspot.com/x/log.txt?x=16ddc995980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=93ca6cd6f392cb76
dashboard link: https://syzkaller.appspot.com/bug?extid=707d98c8649695eaf329
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1791eb49980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=118cf7a5980000

Reported-by: syzbot+707d98c8649695eaf329@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: fecef4cd42c6 ("tun: Assign missing bpf_net_context.")

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