[Linux Kernel Bug] WARNING in remove_vm_area

[Jiaming Zhang]

Dear Linux kernel developers and maintainers:

We are writing to report a kernel WARNING in remove_vm_area,
discovered with our modified version of syzkaller.

This issue was initially found in kernel v6.17-rc5 (commit
76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c). Unfortunately, we do not
have a stable C or Syz program to reproduce this warning. We are
actively analyzing the root cause and working to create a reliable
reproducer, which we will share as soon as it is available.

Attached are the kernel console output and the .config file for your
analysis. Please let us know if any further information would be
helpful.

Best regards,
Jiaming Zhang

[Jiaming Zhang]

Hello,

Apologies for the oversight in my previous email. I neglected to
include the formatted report.

Please find the formatted report (formatted by syz-symbolize) attached
to this email. This should be easier to read and analyze.

Sorry for any inconvenience.

Jiaming Zhang <r7725...@gmail.com> 于2025年9月11日周四 21:59写道：

[Eric Dumazet]

Please note that syzbot reports bcachefs bugs quite often, you do not
have to involve secu...@kernel.org,
especially if you send public reports to linux-...@kernel.org.

Thank you.

[Jiaming Zhang]

Thanks for the reminder! I'll keep it in mind.

Eric Dumazet <edum...@google.com> 于2025年9月12日周五 00:33写道：