Re: [syzbot] [kernel?] kernel BUG in binder_alloc_deferred_release (2)

[Liam R. Howlett]

* syzbot <syzbot+dee8aa54cb2f5a150f9e@xxxxxxxxxxxxxxxxxxxxxxxxx> [241104 11:21]:
> syzbot has bisected this issue to:
> 
> commit f8d112a4e657c65c888e6b8a8435ef61a66e4ab8
> Author: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
> Date:   Fri Aug 30 04:00:54 2024 +0000
> 
>     mm/mmap: avoid zeroing vma tree in mmap_region()
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11fc46a7980000
> start commit:   c2ee9f594da8 KVM: selftests: Fix build on on non-x86 archi..
> git tree:       upstream
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=13fc46a7980000
> console output: https://syzkaller.appspot.com/x/log.txt?x=15fc46a7980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a34ca8ca33c0e535
> dashboard link: https://syzkaller.appspot.com/bug?extid=dee8aa54cb2f5a150f9e
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1484165f980000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=132b2ebb980000
> 
> Reported-by: syzbot+dee8aa54cb2f5a150f9e@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: f8d112a4e657 ("mm/mmap: avoid zeroing vma tree in mmap_region()")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Let's get this out of the way..

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable