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Mon, 30 Oct 2023 19:40:15 +0000 (UTC) Received: from [192.168.0.157] (ip-86-49-236-9.bb.vodafone.cz [86.49.236.9]) by zimbrang.isc.org (Postfix) with ESMTPSA id 5007110EE10B for ; Mon, 30 Oct 2023 19:40:15 +0000 (UTC) Message-ID: <8e97efdf-91b2-4a56-b4e5-cdc87842daef@isc.org> Date: Mon, 30 Oct 2023 20:40:12 +0100 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [bug] nsinfo__mountns_enter failure can cause perf to operate on wrong file Content-Language: en-US From: =?UTF-8?B?UGV0ciDFoHBhxI1law==?= To: linux-perf-users@vger.kernel.org References: <4016cf84-3b11-42ee-ac88-36c1b90b1834@isc.org> Autocrypt: addr=pspacek@isc.org; keydata= xsFNBF/OJ/4BEAC0jP/EShRZtcI9KmzVK4IoD/GEDtcaNEEQzPt05G8xtC0P4uteXUwW8jaB CdcKIKR4eUJw3wdXXScLNlyh0i+gm5mIvKPrBYNAMOGGnkbAmMQOt9Q+TyGeTSSGiAjfvd/N nYg7L/KjVbG0sp6pAWVORMpR0oChHflzKSjvJITCGdpwagxSffU2HeWrLN7ePES6gPbtZ8HY KHUqjWZQsXLkMFw4yj8ZXuGarLwdBMB7V/9YHVkatJPjTsP8ZE723rV18iLiMvBqh4XtReEP 0vGQgiHnLnKs+reDiFy0cSOG0lpUWVGI50znu/gBuZRtTAE0LfMa0oAYaq997Y4k+na6JvHK hhaZMy82cD4YUa/xNnUPMXJjkJOBV4ghz/58GiT32lj4rdccjQO4zlvtjltjp9MTOFbRNI+I FCf9bykANotR+2BzttYKuCcred+Q7+wSDp9FQDdpUOiGnzT8oQukOuqiEh3J8hinHPGhtovH V22D0cU6T/u9mzvYoULhExPvXZglCLEuM0dACtjVsoyDkFVnTTupaPVuORgoW7nyNl0wDrII ILBqUBwzCdhQpYnyARSjx0gWSG1AQBKkk5SHQBqi1RAYC38M59SkpH0IKj+SaZbUJnuqshXh UIbY1GMHbW/GDhz7pNQFFYm2S4OPUBcmh/0O0Osma151/HjF7wARAQABzR9QZXRyIMWgcGHE jWVrIDxwc3BhY2VrQGlzYy5vcmc+wsGXBBMBCABBAhsDBQsJCAcCBhUKCQgLAgQWAgMBAh4B AheAAhkBFiEEEVO2++xeDVoSYmDzq9WHzfBlga4FAmOy+ukFCQXDY2sACgkQq9WHzfBlga5N Eg/+P6lTHvp6mWTatgv7M8J+H3NAnMvJgDrtxN+rVdf9cZDOYGymn/G0ebOqIncRnJ7MPsma G0kjhk4TZNWY6AGyQjg6jVw85rdYTqCBmTTGrR39gnTnanYjEAHL15vpi0T6DC/DMMmpoKNz S6eh4atayF2yVMxUZG9SFkAF+Bukc4VLe1uPgzVDYiabBWsgB+p4NijwiEYbmYChwr5NBAf7 HIrS6MyEVoUeSOzf40lcTg7wp+YFvbQeQ/Xf0F3dPy93lLTWhw8uYSzxQx86SY0sKDhcueQs DK5FeNQvXrZwyoCOG82cxxzUFFb/vXfFw53JoPg33PPPZlSoZYY6T4CqmUittP/UVJw8Gu/w 2NQwwkWq+2Xt6dNJWV7EfXlHz/iwaZaJtNoodPUHQ0X+17/GcYuMhbEIMNq5yW9HfEAuGXbf V8KruYOjWIIVI99kelwnIrshAvjpX31GOZeI9pI+D7QqBCyD8GwHheXkW+iaeY6800IOLclv dWZAgfyi6P6kJusdHextK3d85dmPUkn9KaRpWT3+UpAjTEOQUWuwCC2ivVZQTcddV9Sptnfc iMwxGmaZRZx1hrESA8rQLWeko1he8fJbC3cj+tlgRRdHnsw8bxzyRh7OGPkqGJNbeT6Z3BSy /j0XrFyJIOXhtbD/hXR1JeiDTZuwhOSP8hqItr3OwU0EX84n/gEQANARNXihDNc1fLNFZK5s O14Yg2TouK9eo9gGh4yLSrmZ3pjtnuJSpTWmGD4g0EYzhwWA/T+CqjUnrhsvzLQ1ECYVqLpM VqK2OJ9PhLRbx1ITd4SKO/0xvXFkUqDTIF6a5mUCXH5DzTQGSmJwcjoRv3ye+Z1lDzOKJ+Qr gDHM2WLGlSZAVGcUeD1S2Mp/FroNOjGzrFXsUhOBNMo8PSC4ap0ZgYeVBq5aiMaQex0r+uM4 45S1z5N2nkNRYlUARkfKirqQxJ4mtj5XPC/jtdaUiMzvnwcMmLAwPlDNYiU0kO5IqJFBdzmJ yjzomVk1zK9AYS/woeIxETs+s6o7qXtMGGIoMWr6pirpHk4Wgp4TS02BSTSmNzParrFxLpEU dFKq3M0IsBCVGvfNgWL2pKKQVq34fwuBhJFQAigR9B3O9mfaeejrqt73Crp0ng0+Q74+Llzj EIJLOHYTMISTJyxYzhMCQlgPkKoj+TSVkRzBZoYFkUt4OXvlFj73wkeqeF8Z1YWoOCIjwXH9 0u2lPEq0cRHHyK+KSeH1zQJ4xgj0QDGPmkvi81D13sRaaNu3uSfXEDrdYYc+TSZd2bVh2VCr xrcfzQ1uz9fsdC9NPdNd7/mHvcAaNc5e9IhNh67L54aMBkzlJi18d0sWXOOHkyLSvbHnC/OP wv7qCf69PUJmtoeHABEBAAHCwXwEGAEIACYCGwwWIQQRU7b77F4NWhJiYPOr1YfN8GWBrgUC Y7L7EwUJBcNjlQAKCRCr1YfN8GWBrhHmEACH5ailkji2meFhmfNF7CdR67gcGL5abm5Ac/68 eXzX6xwNQsb04xS+SUnDXf0g5pt3QmzPARfA45z/Wd6HLv7eAcMVbMotG5gxcaEn6M26gDhd o6C/haYRNYUecfqE2GJlMVNQ3ozLiUZHI0UzWgf7eleASywvl4XKfxaRQnu75T2cOVqGhvqc Re0vpUFyoIKH5JwgoQYZ7vcL0LgoL4YspvfzhifYXeU7ymy3L763kQjAfTRqpaIpb0NEb4Qc Viq2Wm7ajwYcCeuZYicShPXeHa69SJqoLENPDSSJfxAOQyN7v5I2ZbqKvlu/9JBvR+ggPJMw Dq2G1GoJuAyT1M5vBVyJ4+AWwq+ujQuYCWgUX9UBIQfgxE1srFL9e229AaX57MebGya6/pBb tlV5ntXrvFh8DSsIAslhO7mybhMij6DWcGX7AB/9+y4xiQanKPAiJTOVMe020CgwbcXYIggp ts1rdXizZImC2qp7EqUbL7egCUsr8LO/8tJ3jGdxoaSK4eaTAc/Ii10NYN7PRs8KWHSHYRbp PTcFT2b45dOeVvbAfgMrZeSmUlutJ0O8QbwI/+dK5wXMW0dQY3w5glV2ELBX+98d9L3haKy+ EFtFHCUTmNuoCAp0oz94MJTYp23XKXfl/PClosk3xCMPl/dcQqgMDhOyF33Dz+IdLQ8qnw== In-Reply-To: <4016cf84-3b11-42ee-ac88-36c1b90b1834@isc.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable On 30. 10. 23 17:42, Petr =C5=A0pa=C4=8Dek wrote: > Hello, >=20 > I've noticed that sometimes "perf record" confuses paths between two=20 > different namespaces and inadvertently operates on a wrong file (on the= =20 > same path - but wrong mount namespace). Apologies for duplicates. For some reason the previous attempts did not=20 show up in my inbox. --=20 Petr =C5=A0pa=C4=8Dek