From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C82B8227EAA for ; Thu, 4 Sep 2025 03:36:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756956966; cv=none; b=rEmLcdeqsHNT84eOnnjFwRNd0hG0yUVSsWJZSzvmEtPUXpoYZQCngVbYPmjL50RE/GWVQusK6t6HzcSPAEoj7UhW/FxLATpxVhJDk9ag47HVn6+dyUtoIaYl2vuJOmDihtSo+T1SMLKS6Jz+L/AzB3rKEt4s3QgpFXZ5ke7c0kc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756956966; c=relaxed/simple; bh=qUFtkn6JT/DGGqhRFbGzvOE7gkdqEhagwYHqw1cSGlo=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=sWlL3Ohcz98ZW47vMBR/Z/RAGwdGblU96dcBZd+vxwhi9GwuUIxaSW1lEB/IvGmR6EPAohUGJVWQIdaQ45w2kRielZxMTpT8hilsQbGZwH53LEWYO2v+nYWmrrEgUISPjANPVYNUkhQ1bKzAFl+p9ZsRoueJ66qqFd/07ElUJF8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f198.google.com with SMTP id e9e14a558f8ab-3f0b5f6aa32so6771735ab.3 for ; Wed, 03 Sep 2025 20:36:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756956964; x=1757561764; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=3kJIQbdDjMaKIwu8/RgGFYQ3IVbCoHpKFlYMG3WTfzE=; b=Cg1cawpik4HmbIsVQIoqwjDQaIVV5aSRgCauIoKx1ajlQVT8s+tEMiNZR5RLoCMBqR YC/kHcD0dfKkC3Uxrc+V7I6B3wd1XKOiAQBJV0HoXvhmsxegeNVlIPHEmQThjtyBmTZm FmzxZDSgmZvpBHZwh0nAs9oq7JPC5LF0PwxJrn3J7rHifCuHusTkknuAa43XwyXVBRpA 4eOpTJFKwUkU6aqZjRa/710yoYn8GJwXSydFMO2S/YtWtelnw6YcMnUe+22lqoce1oMD hvYh1Gto8skfGkDxmdjNCXfB+oFFQn3SxYZV9wXuhZEDOJG+xrg65BhgGBMHmwjlsCeP OMSw== X-Forwarded-Encrypted: i=1; AJvYcCXXkCIRY9/qNaIrIXEGKgSGXqKEkfzxvWdfGJG6rL97nrKA1CMu88ERStyjWghJftvIYWZ3LqHxH1liB40=@vger.kernel.org X-Gm-Message-State: AOJu0YzrOf1/YayirUs0p37X6MNgiHf5sonbmQxw6QJTzrIeQLBRQo6x H8R26cjsfgoUs+/voQOXK/1xx4Rb2xIa9+X721f+YVXH9H2i1BBC1QWmMuVP05CEIsvBPlCg1x0 y9NA+RTnAvxkQFrYPmu70MhSa7HHO/PXnsc2kSeGuSQt+GjFQ3slEayjDNE0= X-Google-Smtp-Source: AGHT+IENXRrLPWSGUnbbTdfTn+b/gxfZBl4CNs9GbenLvGkYX09pwt1Lb4WmWZmlu0cLEj2iQB+7N7oCHFhDvtU1eW4rQU/TouYe Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:4903:b0:3f6:5621:fbde with SMTP id e9e14a558f8ab-3f65621fe5fmr164563825ab.6.1756956963928; Wed, 03 Sep 2025 20:36:03 -0700 (PDT) Date: Wed, 03 Sep 2025 20:36:03 -0700 In-Reply-To: <000000000000939d0a0621818f1e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68b90923.050a0220.3db4df.020e.GAE@google.com> Subject: Re: [syzbot] [mm?] INFO: task hung in hugetlb_fault From: syzbot To: akpm@linux-foundation.org, david@redhat.com, dvyukov@google.com, elver@google.com, glider@google.com, kasan-dev@googlegroups.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mcgrof@kernel.org, mhiramat@kernel.org, mhocko@suse.com, mike.kravetz@oracle.com, muchun.song@linux.dev, osalvador@suse.de, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" syzbot suspects this issue was fixed by commit: commit 2ae1ab9934c785b855583e3eabd208d6f3ac91e1 Author: Oscar Salvador Date: Mon Jun 30 14:42:08 2025 +0000 mm,hugetlb: change mechanism to detect a COW on private mapping bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1289ea42580000 start commit: 87d6aab2389e Merge tag 'for_linus' of git://git.kernel.org.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=fb6ea01107fa96bd dashboard link: https://syzkaller.appspot.com/bug?extid=7bb5e48f6ead66c72906 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17dd6327980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d24f9f980000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: mm,hugetlb: change mechanism to detect a COW on private mapping For information about bisection process see: https://goo.gl/tpsmEJ#bisection