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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688975029; x=1691567029; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=nS9m98kU7hDON5ryRvZOg6LMxfmYBsr98C/Sd1A13CI=; b=SV1gcllcmHGvzllcMGRSezFNpb4/c0llzpZNTfSIjQGNSTe7hM3QAF5ODGBTwmMi3z onKidPx/BWIwfhhWDfyqaX41kOJVpNddZ3k/Orz9Ws6XVsTACRUCUi4ntz3FUIJ9Bg1u Vcb/KEIfZH/doVdupegGht4pRe/BoJkUB16n1nrI7587vlZsvxFQ4A+UE69pdT2n2UqP kMlSj5QPipXis6MuaV8FjPakfwSqLPfQAz0I0Js67/ScGpRiOl94DmZZjmXSxL3x5i6v h387WJOHybZTylYTDI9VxRuvsKNm0Uo6ljV5TRnWAldaGzktO32w7hwrA/k1VY09ViY+ 8Wkw== X-Gm-Message-State: ABy/qLa7TvVFUjFrvPg+7bVHr7kQ/lkE4UjaYQex3+xCo2GGoid5nVvS uICQApdbOu/pASsZPTw+eLruGmhb0rsXtaPUcE1dWA== X-Google-Smtp-Source: APBJJlG5VAfVRlULynbvxJ7b5YEii6Bpwwntm0JXdb0Ee51roYMqD4NIWeivc+EFp+fX/qxqkVDlqpnoKHZ0tC3zfmY= X-Received: by 2002:a05:6512:480d:b0:4ec:5157:bb37 with SMTP id eo13-20020a056512480d00b004ec5157bb37mr66299lfb.2.1688975028537; Mon, 10 Jul 2023 00:43:48 -0700 (PDT) MIME-Version: 1.0 References: <0000000000002373f005ff843b58@google.com> <1bb83e9d-6d7e-3c80-12f6-847bf2dc865e@google.com> <61032955-4200-662b-ace8-bad47d337cdc@os.amperecomputing.com> In-Reply-To: <61032955-4200-662b-ace8-bad47d337cdc@os.amperecomputing.com> From: Dmitry Vyukov Date: Mon, 10 Jul 2023 09:43:36 +0200 Message-ID: Subject: Re: [syzbot] [mm?] [reiserfs?] kernel panic: stack is corrupted in ___slab_alloc To: "Lameter, Christopher" Cc: David Rientjes , syzbot , 42.hyeyoo@gmail.com, Andrew Morton , iamjoonsoo.kim@lge.com, keescook@chromium.org, linux-fsdevel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, penberg@kernel.org, reiserfs-devel@vger.kernel.org, roman.gushchin@linux.dev, syzkaller-bugs@googlegroups.com, Vlastimil Babka , Jan Kara Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 9C60018001B X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: nuppbjsmitooai514p1w31my34u74rqy X-HE-Tag: 1688975030-396873 X-HE-Meta: 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 hFMtGqsX T2kLhWb3brtc34qvtOPUF/ntXtD8NFvsiuNFiQyegUfLXFRWQPPz86Kk5ZwH7i4vXqqUq3Ps+upDhGuLoJr6AYMqluIiEku2FlPWRS6ZX2yiFHn4Lgrih7uTB8qW5AAF99bsJ7XZXOHi3aES4NYY3BevuQ0AV0AT9x/ZR+jLQMmQns/Vf7tYPII70Aobdkj79K/jYJRHJUT90hUUZcx5OH53KHV+EY4aLGwlYOz9T95RB/Hz37h1WbaHciJSM1GC6nOiFq0Uxa0iO6Li5NGvH2muAVU4iQ9FzItdY8flgHDZXvY8pyjglf1cTwxkFfBosqsSYI74S3mQ2tHfpv+eNy1doiaFJ+WPVQFb73AzJLjElVRGifX8JQ47DYiWK3Dvi1n+CX/zN8Wk3I8NL2kbL9JVpxlQbZB8omxvM0u84IQmYYAQiSwHnoV51cDpjfmgKAkcG5rZnvPTIVtV6WxVR4L6l3cVgsma1Fqck X-Bogosity: Ham, tests=bogofilter, spamicity=0.016704, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, 6 Jul 2023 at 20:33, Lameter, Christopher wrote: > > On Mon, 3 Jul 2023, Dmitry Vyukov wrote: > > >> This is happening during while mounting reiserfs, so I'm inclined to think > >> it's more of a reisterfs issue than a slab allocator issue :/ > > Have you tried to run with the "slub_debug" kernel option to figure out > what got corrupted? Can slub_debug detect anything that KASAN can't? I would assume KASAN can detect more bugs (e.g. stack/globals) and report way better. And it was already enabled in the config.