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Tue, 06 May 2025 17:34:01 -0700 (PDT) Received: from google.com ([2401:fa00:8f:203:761:97e0:917d:ad1e]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22e5bedb84asm6854505ad.88.2025.05.06.17.33.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 May 2025 17:34:01 -0700 (PDT) Date: Wed, 7 May 2025 09:33:55 +0900 From: Sergey Senozhatsky To: Misbah Anjum N Cc: Ritesh Harjani , senozhatsky@chromium.org, yosry.ahmed@linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, naveen@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [BUG][powerpc] OOPs: Kernel access of bad area during zram swap write - kswapd0 crash Message-ID: <6r6hex7p53bsbaje4u7so7tfsz6jemazerzujzraibiah7eq4b@m5vgjaff2cdz> References: <89bfdedb74416156423d36d28c5b92e9@linux.ibm.com> <87ldrujhr5.fsf@gmail.com> <3374b7cf6a68364c389a260d7ec9067f@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3374b7cf6a68364c389a260d7ec9067f@linux.ibm.com> X-Rspam-User: X-Rspamd-Queue-Id: 2F36A180008 X-Rspamd-Server: rspam04 X-Stat-Signature: tm9k4gc1th5fzdfnhkyfy5x5arsqhrhy X-HE-Tag: 1746578042-639864 X-HE-Meta: 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 y3nwYbbt hqybaIsbUXk1wGxZd7tzPWW++NXE+ixDvnlg3wX+0pBFvYoAdTQ2SD2XY/1qXM60QQWIrzYtmTshL/SktUqPo/SeguhOeBls+CxN4uv991Y00THziKxnaISe0dDw4IPDyT4teJ4jA+IfqQdoP/eUiOm7YURexI25hN7NZ/XhDN6a8E3Nt9TGgehAe0jQIySvlsj4dzB+wlVw2/vgrrZq7ZaicVaBJuktulWsDSgf4Clg9F+sUVxPdRuec/WlUrtuw8kIpDKPSKKAn/hgn/JKMItGuxnpI0BdA/A8qig6jFZFU9vBGEmTIkYIbP8jB4JS9h5mqQ0qRc9SWymL9sqBvUGfFSxVLvH+A2loRcVWLW4dUrvwreOcNfOTaSyQiSL7RFb+D X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, On (25/05/06 11:09), Misbah Anjum N wrote: > I am facing this issue even with the latest kernel: 6.15.0-rc4-g5721cf0b9352 > The suspecting commit is: 44f76413496ec343da0d8292ceecdcabe3e6ec16. The > commit introduces zs_obj_write() function. > Link: https://github.com/torvalds/linux/commit/44f76413496ec343da0d8292ceecdcabe3e6ec16 Can you try the following fix https://lore.kernel.org/linux-mm/20250504110650.2783619-1-senozhatsky@chromium.org