linux-kernel - Re: [linus:master] [tracing] a3dc2983ca: WARNING:suspicious_RCU

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Message-ID: <20250417104811.38a4bb88@gandalf.local.home>
Date: Thu, 17 Apr 2025 10:48:11 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: kernel test robot <oliver.sang@...el.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, <oe-lkp@...ts.linux.dev>,
 <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
 <linux-trace-kernel@...r.kernel.org>
Subject: Re: [linus:master] [tracing]  a3dc2983ca:
 WARNING:suspicious_RCU_usage

On Thu, 17 Apr 2025 22:42:55 +0800
kernel test robot <oliver.sang@...el.com> wrote:

> Hello,
> 
> kernel test robot noticed "WARNING:suspicious_RCU_usage" on:
> 
> commit: a3dc2983ca7b90fd35f978502de6d4664d965cfb ("tracing: fprobe: Cleanup fprobe hash when module unloading")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> 
> [test failed on linus/master      834a4a689699090a406d1662b03affa8b155d025]
> [test failed on linux-next/master b425262c07a6a643ebeed91046e161e20b944164]
> 
> in testcase: boot
> 
> config: x86_64-randconfig-r052-20250414
> compiler: gcc-12
> test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
> 
> (please refer to attached dmesg/kmsg for entire log/backtrace)

There's already a fix for this:

  https://lore.kernel.org/linux-trace-kernel/20250410-fprobe-v1-1-068ef5f41436@debian.org

Masami,

Are you going to pick this up?

-- Steve