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From: Helge Deller <deller@gmx.de>
To: Alexey Budankov <alexey.budankov@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Ingo Molnar <mingo@redhat.com>,
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	<joonas.lahtinen@linux.intel.com>,
	"rodrigo.vivi@intel.com" <rodrigo.vivi@intel.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
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	<james.bottomley@hansenpartnership.com>,
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	Casey Schaufler <casey@schaufler-ca.com>,
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Cc: Jiri Olsa <jolsa@redhat.com>, Andi Kleen <ak@linux.intel.com>,
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	Igor Lubashev <ilubashe@akamai.com>,
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Subject: Re: [PATCH v4 7/9] parisc/perf: open access for CAP_SYS_PERFMON privileged process
Date: Mon, 27 Jan 2020 09:52:10 +0100
Message-ID: <00d0213a-dce8-45b1-1905-11ea4af2d207@gmx.de> (raw)
In-Reply-To: <806e4881-5c22-5914-a656-5eeb65130dbe@linux.intel.com>

On 18.12.19 10:29, Alexey Budankov wrote:
>
> Open access to monitoring for CAP_SYS_PERFMON privileged processes.
> For backward compatibility reasons access to the monitoring remains open
> for CAP_SYS_ADMIN privileged processes but CAP_SYS_ADMIN usage for secure
> monitoring is discouraged with respect to CAP_SYS_PERFMON capability.
>
> Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>

Acked-by: Helge Deller <deller@gmx.de>

> ---
>  arch/parisc/kernel/perf.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
> index 676683641d00..c4208d027794 100644
> --- a/arch/parisc/kernel/perf.c
> +++ b/arch/parisc/kernel/perf.c
> @@ -300,7 +300,7 @@ static ssize_t perf_write(struct file *file, const char __user *buf,
>  	else
>  		return -EFAULT;
>
> -	if (!capable(CAP_SYS_ADMIN))
> +	if (!perfmon_capable())
>  		return -EACCES;
>
>  	if (count != sizeof(uint32_t))
>


  reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-18  9:16 [PATCH v4 0/7] Introduce CAP_SYS_PERFMON to secure system performance monitoring and observability Alexey Budankov
2019-12-18  9:24 ` [PATCH v4 1/9] capabilities: introduce CAP_SYS_PERFMON to kernel and user space Alexey Budankov
2019-12-18 19:56   ` Stephen Smalley
2019-12-18  9:25 ` [PATCH v4 2/9] perf/core: open access for CAP_SYS_PERFMON privileged process Alexey Budankov
2020-01-08 16:07   ` Peter Zijlstra
2020-01-09 11:36     ` Alexey Budankov
2019-12-18  9:26 ` [PATCH v4 3/9] perf tool: extend Perf tool with CAP_SYS_PERFMON capability support Alexey Budankov
2019-12-18  9:27 ` [PATCH v4 4/9] drm/i915/perf: open access for CAP_SYS_PERFMON privileged process Alexey Budankov
2019-12-19  9:10   ` Lionel Landwerlin
2019-12-18  9:28 ` [PATCH v4 5/9] trace/bpf_trace: " Alexey Budankov
2019-12-18  9:28 ` [PATCH v4 6/9] powerpc/perf: " Alexey Budankov
2019-12-18  9:29 ` [PATCH v4 7/9] parisc/perf: " Alexey Budankov
2020-01-27  8:52   ` Helge Deller [this message]
2019-12-18  9:30 ` [PATCH v4 8/9] drivers/perf: " Alexey Budankov
2019-12-18  9:31 ` [PATCH v4 9/9] drivers/oprofile: " Alexey Budankov

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