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From:   Jiri Olsa <olsajiri@gmail.com>
Date:   Tue, 16 May 2023 23:42:34 +0200
To:     Ze Gao <zegao2021@gmail.com>
Cc:     Steven Rostedt <rostedt@goodmis.org>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Borislav Petkov <bp@alien8.de>,
        Christian Borntraeger <borntraeger@linux.ibm.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Heiko Carstens <hca@linux.ibm.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Sven Schnelle <svens@linux.ibm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Vasily Gorbik <gor@linux.ibm.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
        linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
        bpf@vger.kernel.org, Conor Dooley <conor@kernel.org>,
        Yonghong Song <yhs@fb.com>, Ze Gao <zegao@tencent.com>
Subject: Re: [PATCH v2 0/4] Make fprobe + rethook immune to recursion
Message-ID: <ZGP4ypidaxQGdp7Y@krava>
References: <20230516071830.8190-1-zegao@tencent.com>
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On Tue, May 16, 2023 at 03:18:26PM +0800, Ze Gao wrote:
> Hi all,
> 
> This is the 2nd version of patch series to fix the ftrace rethook recursion problem.
> 
> v1: https://lore.kernel.org/linux-trace-kernel/cover.1684120990.git.zegao@tencent.com/T/                                 +++#md4c0bae6a6cae28dadf2a2c6105ff140b35fddea
> 
> As Steven suggested, this version removes unnecessary notrace annotations from fprobe
> and rethook functions from v1 [PATCH 2,3,4/4] and replaces with makefile changes to filter
> out compiler flags which ftrace depends upon for rethook related objects.
> 
> Ze Gao (4):
>   rethook: use preempt_{disable, enable}_notrace in
>     rethook_trampoline_handler
>   fprobe: make fprobe_kprobe_handler recursion free
>   fprobe: add recursion detection in fprobe_exit_handler
>   rehook, fprobe: do not trace rethook related functions

hi,
what tree is this based on? I have troubles to apply that

thanks,
jirka

> 
>  arch/riscv/kernel/probes/Makefile |  2 +
>  arch/s390/kernel/Makefile         |  1 +
>  arch/x86/kernel/Makefile          |  1 +
>  kernel/trace/fprobe.c             | 72 ++++++++++++++++++++++++-------
>  kernel/trace/rethook.c            |  4 +-
>  5 files changed, 63 insertions(+), 17 deletions(-)
> 
> -- 
> 2.40.1
>