From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 921D627A929 for ; Wed, 14 May 2025 13:58:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747231086; cv=none; b=XGmdN1CbTvZ5c3NY1Vg0L13UzEw84Ymuxd1wVqGLQZIoWon428287sXC1NQjXpirdzPLVFQuy9g6ZFmAlDvtYgUS3oFDCXSU10kCDFMG4FYJmZMwErRnPRqcYlBnA25UJvJhyjia/AYL84Hvac1M7b/986KM8pOrEHPVZLKt6zI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747231086; c=relaxed/simple; bh=LWyAOvzRnXuIZA8cLevaGutmbqIQDsqlc4rNxMh6jXc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=CcuZNRLPReyrmJffc6momqIyGGAvByOTHvOSDSyAMEemXAqa2FTFN58gEir26IoXgvhlqNC78tXWIbJxpFwqPoU3h148ol1IRX+MgFF1msSNG6QnI6SvZsSlSTDMHx551nCsSMNo/B1YIbzuluRPGv8fr7aUSioa4BLXM3LFOjM= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-3da8e79f6c6so40190485ab.3 for ; Wed, 14 May 2025 06:58:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1747231083; x=1747835883; 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=D0+yF4RILSxJaNDLV//8NLYN3xc4izbjtIG3syz7JXc=; b=X4CYS1xVmYeQxfMPEBxpyGAd6UuDmVIme+FS+8W67GFmJZawlhWp3Q0N7HjA41S6G0 9ITyu1158cYlOEIMcduTpJ2FG3sJJAjjzMevtOfvBb+NpFEd6lvj8ljjPAXD6crHJJs/ zUoNo9jrzRaVTQTfQwry9i78DUWZimKf/wNtcLZP4wiFDBeFDWaRf0jJLS4q7Q2DxC67 wTDziqUXpfccKw+tFu+F7w5yyAPHs3ibVfXHe0Rjnb7+qwG8dJtlG5W3fDxONCAaZJ50 cjpEAWtTKAW2ElAVOSbHqyaKva4v2coJFkKEnvrzPebfsnsl86omhZT29KhoFmi73wjP WKQw== X-Forwarded-Encrypted: i=1; AJvYcCXopMH5TFJFTQKr5SLw3WGs659DvbJS+9DVHS++Islr//YBK8iGy7ajt5DDJvlLU7o5hKjZFrBLhl1/C4U=@vger.kernel.org X-Gm-Message-State: AOJu0YyBTRDuMfR77DTiVMK3m5m1EUhgqrKxDZgZ+qW7ZYc+PFFwvQT2 5Ncw4KIh42Py86PGTfeB1XuzOTO12wVNh3xZI5oDizrp4ZrlMTqdhayUmJ1+00yiAyZIJNJebxR lkw5eD9mNWuzCAp+SKJIoosHT8h+wMGsR5AapFTsHOiPKyQnkJX0OXuA= X-Google-Smtp-Source: AGHT+IG7nK7DACC9FvxEeV9+wB2/wCISw0/U2axZ45Q+rzSrmJ5n0M5GBgXa4if78wtL/2uUoiiQbLrwRmJIqknQFKiKHVqvdU08 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:b4c:b0:3d9:6c9a:f35d with SMTP id e9e14a558f8ab-3db6f7ad066mr33144265ab.10.1747231083625; Wed, 14 May 2025 06:58:03 -0700 (PDT) Date: Wed, 14 May 2025 06:58:03 -0700 In-Reply-To: <67f1c7df.050a0220.0a13.0256.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6824a16b.a70a0220.3e9d8.0015.GAE@google.com> Subject: Re: [syzbot] [mm?] general protection fault in mremap From: syzbot To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, eadavis@qq.com, jannh@google.com, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, nogikh@google.com, pfalcato@suse.de, syzkaller-bugs@googlegroups.com, syzkaller@googlegroups.com, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" syzbot suspects this issue was fixed by commit: commit 36eed5400805b294f1df39b0e3ebc5b7971b3c16 Author: Lorenzo Stoakes Date: Sun Mar 30 16:20:48 2025 +0000 mm/mremap: do not set vrm->vma NULL immediately prior to checking it bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=118356f4580000 start commit: a2cc6ff5ec8f Merge tag 'firewire-updates-6.15' of git://gi.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=adffebefc9feb9d6 dashboard link: https://syzkaller.appspot.com/bug?extid=5250c4727db03e3436cc syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1693d404580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=178ac94c580000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: mm/mremap: do not set vrm->vma NULL immediately prior to checking it For information about bisection process see: https://goo.gl/tpsmEJ#bisection