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Fri, 17 Jan 2025 05:04:52 +0000 (GMT) Received: from epsmgmcp1.samsung.com (unknown [182.195.42.82]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20250117050452epsmtrp1a2ae4ba790b9c5def6285c50c89e2a31~bYmr8HJAu0799307993epsmtrp1Y; Fri, 17 Jan 2025 05:04:52 +0000 (GMT) X-AuditID: b6c32a4d-abdff70000007d0a-5e-6789e4f58055 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgmcp1.samsung.com (Symantec Messaging Gateway) with SMTP id 4D.E4.33707.4F4E9876; Fri, 17 Jan 2025 14:04:52 +0900 (KST) Received: from perf (unknown [10.229.95.91]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20250117050452epsmtip14a1c60a3330af1eccdb5ebd4a86aaec3~bYmrsfZzb2367423674epsmtip1J; Fri, 17 Jan 2025 05:04:52 +0000 (GMT) Date: Fri, 17 Jan 2025 14:08:34 +0900 From: Youngmin Nam To: Neal Cardwell Cc: Eric Dumazet , Youngmin Nam , Jakub Kicinski , davem@davemloft.net, dsahern@kernel.org, pabeni@redhat.com, horms@kernel.org, guo88.liu@samsung.com, yiwang.cai@samsung.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, joonki.min@samsung.com, hajun.sung@samsung.com, d7271.choe@samsung.com, sw.ju@samsung.com, "Dujeong.lee" Subject: Re: [PATCH] tcp: check socket state before calling WARN_ON Message-ID: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrMJsWRmVeSWpSXmKPExsWy7bCmue7XJ53pBlNPi1pc2zuR3WLO+RYW i3W7Wpksni2YwWLx9NgjdovJUxgtmvZfYrZ41H+CzeLq7nfMFhe29bFaXN41h82i485eFotj C8Qsvp1+w2jR+vgzu8XH403sFosPfGJ3EPTYsvImk8eCTaUem1Z1snm833eVzaNvyypGj8+b 5ALYorJtMlITU1KLFFLzkvNTMvPSbZW8g+Od403NDAx1DS0tzJUU8hJzU22VXHwCdN0yc4BO V1IoS8wpBQoFJBYXK+nb2RTll5akKmTkF5fYKqUWpOQUmBfoFSfmFpfmpevlpZZYGRoYGJkC FSZkZxzbsZi9oImz4vWxXSwNjIfZuxg5OSQETCR6Pn9l62Lk4hAS2MMo0bPyDROE84lR4szk 0yxwzqJnK+FaNp5ZCpXYySjx4sJLRgjnIaPEqiPzgDIcHCwCqhJ//geANLAJ6EpsO/GPEcQW EdCQuLvoAVg9s8AWZokHb74wgtQLCzhL/L1jC1LDK6As8Xf2dxYIW1Di5MwnYCM5BQIlZnak gbRKCOzhkLjcfokZ4iAXiR9tv1ghbGGJV8e3QB0qJfGyvw3KLpZouH+LGaK5hVHi1PUXUM3G ErOetYMdxyyQKTHx1yuwZRJARxy5xQIR5pPoOPyXHSLMK9HRJgTRqSbxa8oGRghbRmL34hVQ Ez0kbh0/wQ4JknksEicn/2CawCg3C8k7s5Bsg7B1JBbs/sQ2C2gFs4C0xPJ/HBCmpsT6XfoL GFlXMUqlFhTnpqcmGxUY6uallsMjOTk/dxMjODVr+e5gfL3+r94hRiYOxkOMEhzMSiK8ab87 0oV4UxIrq1KL8uOLSnNSiw8xmgKjZyKzlGhyPjA75JXEG5pYGpiYmRmaG5kamCuJ81bvaEkX EkhPLEnNTk0tSC2C6WPi4JRqYGLMnyjGXc0rF7Fjz9lyf/t50m3f1QSyV/85O/3AJZF5B7n+ qCxQyu5fplSQ/bH/w5Lop/2b+sQcZzGlJLY/nGV9R6VXkq28Le4ck/PyZ5+XOO85fiDzt89t 7otb0o+u7NkyN/lqgTWLssDL+kqVhDUTYxaVzEiIetimc2BOhENE5bW/+7U2MrSekW5cKTLf W2bm9H1c+/fNbFtg76T98eHFxPIWPt/jSx04t5nwJ045sDr782JOx82FM+7vP2235d2c5hsq puedivNFv4faCISsW8b23PbhQe/NjxoMLl3wcFzoNumZbp3xP8+Qum0a5y5xPdn6xCf+5Hy5 mzO4w+4/3HBmzyu+zwuzzp1/9bJTiaU4I9FQi7moOBEAWgYyIlYEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrPLMWRmVeSWpSXmKPExsWy7bCSnO6XJ53pBo8mGllc2zuR3WLO+RYW i3W7Wpksni2YwWLx9NgjdovJUxgtmvZfYrZ41H+CzeLq7nfMFhe29bFaXN41h82i485eFotj C8Qsvp1+w2jR+vgzu8XH403sFosPfGJ3EPTYsvImk8eCTaUem1Z1snm833eVzaNvyypGj8+b 5ALYorhsUlJzMstSi/TtErgyfuz9zlqwn61i8ZY57A2MM1m7GDk5JARMJDaeWcoCYgsJbGeU +DLVEiIuI3F75WWoGmGJ+y1HgGwuoJr7jBKfX51k7mLk4GARUJX48z8ApIZNQFdi24l/jCC2 iICGxN1FDxhB6pkFdjBLLG3dxwZSLyzgLPH3ji1IDa+AssTf2d9ZIGYuYJH4d3o6I0RCUOLk zCdgBzELaEnc+PeSCaSXWUBaYvk/DhCTUyBQYmZH2gRGgVlIGmYhaZiF0LCAkXkVo2hqQXFu em5ygaFecWJucWleul5yfu4mRnAcaQXtYFy2/q/eIUYmDsZDjBIczEoivGm/O9KFeFMSK6tS i/Lji0pzUosPMUpzsCiJ8yrndKYICaQnlqRmp6YWpBbBZJk4OKUamLb1Okh9uM903+G52Lnj J9PWlCyeVuKmGpkmH65d4yixuS7npNldGa3aDR7Xdm5ak1y0nvHKupZFK37OD30Ucu3t9z/b Tp80Xdl78mKwuQ23QAOzSvvPbafnHiy24D7w/Ma7sGMPLq/Lvjz1A6f5s2k7FG5v63lirD3/ 9IEVBzkNnvrVRqr9LQhZe/lwd/5ORp4S5cefPOoNztwWL1Bf+TbtQEjt/tRdm06bPCjXk4xu 8jp+fetTf9FPr6IjK5QmTkibyWG4NK/G4ixjttWJ3RPu/lTZ8V540cvf1WtO1FVoKe+J63z1 yUTC3M335bF5RrLKzCWJ28IaL77W2uLavuVx+pMVywR0ubPXS27dWXpCiaU4I9FQi7moOBEA TavUNxIDAAA= X-CMS-MailID: 20250117050452epcas2p3eec45f40766213150d849de55e6114ae X-Msg-Generator: CA Content-Type: multipart/mixed; boundary="----6TxoHKXr_qkwT5q0XKHb2K6SEyMzWlX0etqXdnnbNHHFM6GI=_284afd_" X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20241203081005epcas2p247b3d05bc767b1a50ba85c4433657295 References: <20241203081247.1533534-1-youngmin.nam@samsung.com> <20241203181839.7d0ed41c@kernel.org> <009e01db4620$f08f42e0$d1adc8a0$@samsung.com> ------6TxoHKXr_qkwT5q0XKHb2K6SEyMzWlX0etqXdnnbNHHFM6GI=_284afd_ Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline > Thanks for all the details! If the ramdump becomes available again at > some point, would it be possible to pull out the following values as > well: > > tp->mss_cache > inet_csk(sk)->icsk_pmtu_cookie > inet_csk(sk)->icsk_ca_state > > Thanks, > neal > Hi Neal. Happy new year. We are currently trying to capture a tcpdump during the problem situation to construct the Packetdrill script. However, this issue does not occur very often. By the way, we have a full ramdump, so we can provide the information you requested. tp->packets_out = 0 tp->sacked_out = 0 tp->lost_out = 4 tp->retrans_out = 1 tcp_is_sack(tp) = 1 tp->mss_cache = 1428 inet_csk(sk)->icsk_ca_state = 4 inet_csk(sk)->icsk_pmtu_cookie = 1500 If you need any specific information from the ramdump, please let me know. Thanks. ------6TxoHKXr_qkwT5q0XKHb2K6SEyMzWlX0etqXdnnbNHHFM6GI=_284afd_ Content-Type: text/plain; charset="utf-8" ------6TxoHKXr_qkwT5q0XKHb2K6SEyMzWlX0etqXdnnbNHHFM6GI=_284afd_--