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[89.73.96.21]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2f4048acb0bsm10663581fa.125.2024.08.25.09.24.38 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 25 Aug 2024 09:24:39 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3776.700.51\)) Subject: Re: [regression] oops on heavy compilations ("kernel BUG at mm/zswap.c:1005!" and "Oops: invalid opcode: 0000") From: Piotr Oniszczuk In-Reply-To: Date: Sun, 25 Aug 2024 18:24:28 +0200 Cc: Nhat Pham , Matthew Wilcox , Linux regressions mailing list , LKML , Johannes Weiner , Yosry Ahmed , Linux-MM Content-Transfer-Encoding: quoted-printable Message-Id: <3D1B8F1F-2C41-4CCD-A5D7-41CF412F99DE@gmail.com> References: <6f65e3a6-5f1a-4fda-b406-17598f4a72d5@leemhuis.info> <02D2DA66-4A91-4033-8B98-ED25FC2E0CD6@gmail.com> To: Pedro Falcato X-Mailer: Apple Mail (2.3776.700.51) X-Rspamd-Queue-Id: 06E3FA0005 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: ofppnpoa368zauu6iboc5ay8qmfk9ypu X-HE-Tag: 1724603081-105780 X-HE-Meta: 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 Yzmtb44R 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.258475, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > Wiadomo=C5=9B=C4=87 napisana przez Pedro Falcato = w dniu 25.08.2024, o godz. 17:05: >=20 > Also, could you try a memtest86 on your machine, to shake out = potential hardware problems? I found less time consuming way to trigger issue: 12c24t cross compile = of llvm with =E2=80=9Eonly 16G=E2=80=9D of ram - as this triggers many = heavy swappings (top swap usage gets 8-9G out of 16G swap part) With such setup - on 6.9.12 - i=E2=80=99m getting not available system = (due cpu soft lockup) just in 1..3h (usually first or second compile iteration; i wrote simple scrip = compiling in loop + counting interations) Then i switched back to 6.8.2 and=E2=80=A6. decided interrupt successful = test after 14 iterations (it was 19h of non-stop compiling with heavy = swapping) (sure - i can still keep test going - but builder is also needed for my = normal development) So summarising: -on 6.9+ just 1..3h seems enough to provoke issue -on 6.8.2 so far never in past + currently can=E2=80=99t provoke issue = (last day in 19h test window nor 5 full distro builds nor last 2 weeks = of development) By above i personally don=E2=80=99t believe issue is in hw (ram) =20=