Re: [syzbot] [btrfs?] WARNING: kmalloc bug in btrfs_ioctl_send

[syzbot]

syzbot has bisected this issue to:

commit 7661809d493b426e979f39ab512e3adf41fbcc69
Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date:   Wed Jul 14 16:45:49 2021 +0000

    mm: don't allow oversized kvmalloc() calls

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13f2c851480000
start commit:   f9ff5644bcc0 Merge tag 'hsi-for-6.2' of git://git.kernel.o..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=100ac851480000
console output: https://syzkaller.appspot.com/x/log.txt?x=17f2c851480000
kernel config:  https://syzkaller.appspot.com/x/.config?x=827916bd156c2ec6
dashboard link: https://syzkaller.appspot.com/bug?extid=4376a9a073770c173269
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1775aed7880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11cbcbd0480000

Reported-by: syzbot+4376a9a073770c173269@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 7661809d493b ("mm: don't allow oversized kvmalloc() calls")

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