linux-kernel - [Linux Kernel Bug] general protection fault in rcu_segcblist

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Message-ID: <CANypQFZ0OcwJRs4yVrgWfwUZcVC4o=_2nOtJWaD3S2Q7vcY95Q@mail.gmail.com>
Date: Fri, 12 Sep 2025 20:31:43 +0800
From: Jiaming Zhang <r772577952@...il.com>
To: kent.overstreet@...ux.dev, linux-bcachefs@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, syzkaller@...glegroups.com
Subject: [Linux Kernel Bug] general protection fault in rcu_segcblist_advance

Dear Linux kernel developers and maintainers:

We are writing to report a general protection fault in
rcu_segcblist_advance, discovered with our modified version of
syzkaller.

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

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

Best regards,
Jiaming Zhang

Download attachment ".config" of type "application/xml" (275903 bytes)

Download attachment "report" of type "application/octet-stream" (4453 bytes)

Download attachment "kernel.log" of type "application/octet-stream" (143343 bytes)