From: Michael Ellerman <mpe@ellerman.id.au>
To: Elvira Khabirova <lineprinter@altlinux.org>,
benh@kernel.crashing.org, paulus@samba.org
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
leitao@debian.org, oleg@redhat.com, luto@kernel.org,
ldv@altlinux.org, esyr@redhat.com
Subject: Re: [PATCH v2] powerpc/ptrace: replace ptrace_report_syscall() with a tracehook call
Date: Fri, 16 Nov 2018 23:42:24 +1100 [thread overview]
Message-ID: <87ftw12nyn.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <20181116121701.14359da0@akathisia>
Elvira Khabirova <lineprinter@altlinux.org> writes:
> Arch code should use tracehook_*() helpers, as documented
> in include/linux/tracehook.h.
Thanks.
It probably also should have a comment explaining why we're ignoring the
return value and why that's OK.
cheers
> Fixes: 5521eb4bca2d ("powerpc/ptrace: Add support for PTRACE_SYSEMU")
> Signed-off-by: Elvira Khabirova <lineprinter@altlinux.org>
> ---
> arch/powerpc/kernel/ptrace.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
> index afb819f4ca68..d79d907f9acc 100644
> --- a/arch/powerpc/kernel/ptrace.c
> +++ b/arch/powerpc/kernel/ptrace.c
> @@ -3266,7 +3266,7 @@ long do_syscall_trace_enter(struct pt_regs *regs)
> user_exit();
>
> if (test_thread_flag(TIF_SYSCALL_EMU)) {
> - ptrace_report_syscall(regs);
> + (void) tracehook_report_syscall_entry(regs);
> /*
> * Returning -1 will skip the syscall execution. We want to
> * avoid clobbering any register also, thus, not 'gotoing'
> --
> 2.19.1
next prev parent reply other threads:[~2018-11-16 12:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-16 11:17 [PATCH v2] powerpc/ptrace: replace ptrace_report_syscall() with a tracehook call Elvira Khabirova
2018-11-16 12:42 ` Michael Ellerman [this message]
2018-11-19 21:01 ` [PATCH v3] " Dmitry V. Levin
2018-11-21 21:17 ` Michael Ellerman
2018-12-03 3:18 ` [PATCH v4] " Dmitry V. Levin
2018-12-07 1:19 ` Dmitry V. Levin
2018-12-07 11:12 ` Michael Ellerman
2018-12-07 15:42 ` Dmitry V. Levin
2018-12-07 15:56 ` [PATCH v5] " Dmitry V. Levin
2018-12-07 18:52 ` [PATCH v6] " Dmitry V. Levin
2018-12-10 13:28 ` Oleg Nesterov
2018-12-10 13:36 ` Dmitry V. Levin
2018-12-16 17:28 ` [PATCH] powerpc/ptrace: cleanup do_syscall_trace_enter Dmitry V. Levin
2018-12-17 11:20 ` Michael Ellerman
2018-12-17 11:23 ` Dmitry V. Levin
2018-12-17 11:27 ` Oleg Nesterov
2018-12-22 9:54 ` Michael Ellerman
2018-12-11 13:45 ` [v5] powerpc/ptrace: replace ptrace_report_syscall() with a tracehook call Michael Ellerman
2018-12-07 16:34 ` [PATCH v4] " Oleg Nesterov
2018-12-07 18:42 ` Dmitry V. Levin
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