From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 11E5C2F3D for ; Sun, 18 Dec 2022 15:36:41 +0000 (UTC) Received: by mail-il1-f197.google.com with SMTP id k6-20020a92c246000000b003035797fa8cso5255392ilo.8 for ; Sun, 18 Dec 2022 07:36:40 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=2UDRP+rqHDtdAflIvbj6H9tsEQH1tc5gZEcOVjsrbO0=; b=IFtK74Ft472pgpGUGK8+49aLYqfbAN1TMjRhKAOI8gNsKCSvB4SK/oHU2fybwYLrXL WW0zHDrtHfDcbx0DZdz+cPGtrJGcPcipwxZsNsnWmV7/FXheieEH8syBSHI5wLAkyh9c b3CMLm+AYchzzedNuF85z5ObV3sUdzTZ90mFrZaeONmWMjiZr5xt/NqNIQvsQ+mp38gv bfLtZj9o3WkbinmDsIph2w5GIcQk0Q5n4uLujNRuezBwrwTt9Z4L9Gv/2ex+zYvbKWnr 60lJz6IuFiuBxCTNx9cclHrFtwmFSwbdKYLVhMqGObtjgjZKNnIakSRbxWYcC+QKb+2a Ch6g== X-Gm-Message-State: ANoB5plEgoG4uJZDdoZSfhks4yBTt07clX9KwK5CRmFqQDL6TjWcghH7 rJe2ssJxuJvQCmaln3S0wsj1y7RUsdlWL0MQXlYaa1H5Stzd X-Google-Smtp-Source: AA0mqf4PGPr/gv0WcsIAWq+z4iEzp0kGhKxHD1sNzeEiuKVmH0phnSCjokl2zccdegD6jNVtSm/c9yO8cJNOiQBrfQroBnPrpbYt Precedence: bulk X-Mailing-List: ntfs3@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a02:85ab:0:b0:389:fed9:fff2 with SMTP id d40-20020a0285ab000000b00389fed9fff2mr20415156jai.123.1671377800186; Sun, 18 Dec 2022 07:36:40 -0800 (PST) Date: Sun, 18 Dec 2022 07:36:40 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000010d44905f01bf8e7@google.com> Subject: [syzbot] [ntfs3?] BUG: unable to handle kernel NULL pointer dereference in ntfs_sparse_cluster From: syzbot To: almaz.alexandrovich@paragon-software.com, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, nathan@kernel.org, ndesaulniers@google.com, ntfs3@lists.linux.dev, syzkaller-bugs@googlegroups.com, trix@redhat.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e2ca6ba6ba01 Merge tag 'mm-stable-2022-12-13' of git://git.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=122e9bc7880000 kernel config: https://syzkaller.appspot.com/x/.config?x=276eb8ff64eb2c27 dashboard link: https://syzkaller.appspot.com/bug?extid=deb631beeb93bdb2df4c compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d8601b880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17a09c93880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8aad47431ccd/disk-e2ca6ba6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/382636835ba9/vmlinux-e2ca6ba6.xz kernel image: https://storage.googleapis.com/syzbot-assets/ac62c9f6a7cf/bzImage-e2ca6ba6.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/2d4fa4df0bbf/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+deb631beeb93bdb2df4c@syzkaller.appspotmail.com BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 217c0067 P4D 217c0067 PUD 1e4e8067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5302 Comm: syz-executor244 Not tainted 6.1.0-syzkaller-09941-ge2ca6ba6ba01 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003c1fca8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880268b8000 RDX: 0000000000000000 RSI: ffffea0001c79440 RDI: ffff888075eb0478 RBP: ffffea0001c79440 R08: ffffffff81bc12ab R09: fffff9400038f289 R10: fffff9400038f289 R11: 1ffffd400038f288 R12: 0000000000000000 R13: 0000000000010000 R14: 1ffffd400038f288 R15: ffffffffffffffff FS: 00007f45fe7d4700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000002986e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_sparse_cluster+0x767/0xa90 fs/ntfs3/file.c:335 ntfs_fallocate+0xbc6/0xfb0 fs/ntfs3/file.c:727 vfs_fallocate+0x515/0x670 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4606a484c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f45fe7d4308 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f4606aec6f8 RCX: 00007f4606a484c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f4606aec6f0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010000 R11: 0000000000000246 R12: 00007f4606aec6fc R13: 00007f4606ab93d8 R14: 0030656c69662f2e R15: 0000000000022000 Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003c1fca8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880268b8000 RDX: 0000000000000000 RSI: ffffea0001c79440 RDI: ffff888075eb0478 RBP: ffffea0001c79440 R08: ffffffff81bc12ab R09: fffff9400038f289 R10: fffff9400038f289 R11: 1ffffd400038f288 R12: 0000000000000000 R13: 0000000000010000 R14: 1ffffd400038f288 R15: ffffffffffffffff FS: 00007f45fe7d4700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000002986e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches