From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f206.google.com (mail-il1-f206.google.com [209.85.166.206]) (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 C133E1E48A for ; Mon, 9 Dec 2024 11:20:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733743222; cv=none; b=Pc4yXEXUiGn3wUPd6YJix4vYpcHbjj2UU8X3yghJtRaCqtR7F6JzDwktPshzco9PrruGomq8pFSRMmvDcUw6JZqYURBFNqFeHhH/ssYgJ+Z57me++UCN7CF+XnZU7Gf6TTMCnWRKAveIeBa8hguWvYsQJI9g03D2VP6ynK2vi8M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733743222; c=relaxed/simple; bh=gv3k5bUUfMvgEeTWdoNo69gvWGg77ARw/8iyBjqzNkI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Posg+xeCZRFkmi+1aWBg307XSJOZS3qlln+Kd1LHocTY/nyjWWFZPXTL8MzgHPhCIFU43GBkrSzfRTTYJYgpi++qIYcp+Yzxne8Js07ovp8voRgkNhp6UFjgJiZLT5wQN5WrLn1AYDLlLc+B21KZ6WFboQuyL5+NP9nxcdDxuUQ= 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=209.85.166.206 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-f206.google.com with SMTP id e9e14a558f8ab-3a812f562bbso44263625ab.1 for ; Mon, 09 Dec 2024 03:20:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733743220; x=1734348020; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=c1Z55HRJnZ6tkjpxl7hN/deOPO0pijifB0azjb9acSE=; b=wuvwP5kQLOjf6vtmQFBXm9/suPg/2dWKIkJS/qd3yuULWSlz5oUhifkbM9888Qo5Zf O8hWD5NOF4CcT5XtxLHRZyCajzgTxqiquPA0XNLVOHkduRbHoMylejVxmqTsqw4jsMja AnD21BWijBs4WEh6Un8JgVYGlymkgZos+uOs/6Yq0SvDQuejtK8DxzIrEBqzF7yZ5Lgf bFo/9zw/o/RImjf9CESuzSM41iOMQWQm219c11I4BdEb5cl15EEhqalMMB+zjz7gaVNa JNmFlY8buCc4IZpjBjO60NuQt+uBVySKn24D+R57bAgUjKgrCewUq5ZpRU+J5IUgXuiL HrqA== X-Forwarded-Encrypted: i=1; AJvYcCVBVuabqreEcgEXCBsDaWtGK7En+S/HM7OFW8V1QBlU7aFJx1Pp/xlyBrfMqrwcBG1ERBM19d6CuVxAmWE=@vger.kernel.org X-Gm-Message-State: AOJu0YxzQEwv767msuFV5aj1TFzlSaujKpVfWB9l7ZcJy/JOeqeVWs9x TClcMMeQhhdBwWtEaV9CRyH69gknAqKYDi8Y+eoOl5cjWoHhYzy7B+hXp2swkofr7MoZnHtAPXs GIBSIBNcxFf3AJ/5uiSvpLr2IW4/0MtQ3tdfZjqLDC9SUO9nRoL0kMqI= X-Google-Smtp-Source: AGHT+IFilrhJ+Po4uZb16XUvne4MVVRPmZ0HwWr35+QyNC8NTzDNFhrbyW68x4lCNnxHFgKK/0D80F1Gpwl0p4RXsx1f+aTPV6+u Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:19c6:b0:3a7:e83c:2d10 with SMTP id e9e14a558f8ab-3a811e3fea2mr141988935ab.24.1733743219873; Mon, 09 Dec 2024 03:20:19 -0800 (PST) Date: Mon, 09 Dec 2024 03:20:19 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6756d273.050a0220.2477f.003d.GAE@google.com> Subject: [syzbot] [mm?] general protection fault in find_mergeable_anon_vma From: syzbot To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, jannh@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17f85fc0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7 dashboard link: https://syzkaller.appspot.com/bug?extid=2d788f4f7cb660dac4b7 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-feffde68.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6135c7297e8e/vmlinux-feffde68.xz kernel image: https://storage.googleapis.com/syzbot-assets/6c154fdcc9cb/bzImage-feffde68.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2d788f4f7cb660dac4b7@syzkaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xdffffc0000000080: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000400-0x0000000000000407] CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:anon_vma_compatible mm/vma.c:1804 [inline] RIP: 0010:reusable_anon_vma mm/vma.c:1837 [inline] RIP: 0010:find_mergeable_anon_vma+0x1e4/0x8f0 mm/vma.c:1863 Code: 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ff e8 10 39 10 00 4d 8b 37 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 ed 38 10 00 49 8b 5d 00 4c 89 f7 RSP: 0018:ffffc9000d3df500 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffffc9000d3df540 RCX: ffff88801cf80000 RDX: 0000000000000000 RSI: ffffffff900062a0 RDI: 0000000000000000 RBP: ffffc9000d3df610 R08: 0000000000000005 R09: ffffffff8bc6b642 R10: 0000000000000003 R11: ffff88801cf80000 R12: 0000000000000080 R13: 0000000000000406 R14: 0000000021000000 R15: ffff8880120d4ca0 FS: 00007f137f7e86c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 0000000040256000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __anon_vma_prepare+0xd9/0x4a0 mm/rmap.c:199 anon_vma_prepare include/linux/rmap.h:164 [inline] uprobe_write_opcode+0x1a95/0x2d80 kernel/events/uprobes.c:516 install_breakpoint+0x4fc/0x660 kernel/events/uprobes.c:1135 register_for_each_vma+0xa08/0xc50 kernel/events/uprobes.c:1275 uprobe_register+0x811/0x970 kernel/events/uprobes.c:1384 bpf_uprobe_multi_link_attach+0xaca/0xdd0 kernel/trace/bpf_trace.c:3442 link_create+0x6d7/0x870 kernel/bpf/syscall.c:5399 __sys_bpf+0x4bc/0x810 kernel/bpf/syscall.c:5860 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline] __se_sys_bpf kernel/bpf/syscall.c:5895 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f137e97ff19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f137f7e8058 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f137eb46080 RCX: 00007f137e97ff19 RDX: 000000000000003c RSI: 00000000200012c0 RDI: 000000000000001c RBP: 00007f137e9f3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f137eb46080 R15: 00007fff36be56b8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:anon_vma_compatible mm/vma.c:1804 [inline] RIP: 0010:reusable_anon_vma mm/vma.c:1837 [inline] RIP: 0010:find_mergeable_anon_vma+0x1e4/0x8f0 mm/vma.c:1863 Code: 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ff e8 10 39 10 00 4d 8b 37 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 ed 38 10 00 49 8b 5d 00 4c 89 f7 RSP: 0018:ffffc9000d3df500 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffffc9000d3df540 RCX: ffff88801cf80000 RDX: 0000000000000000 RSI: ffffffff900062a0 RDI: 0000000000000000 RBP: ffffc9000d3df610 R08: 0000000000000005 R09: ffffffff8bc6b642 R10: 0000000000000003 R11: ffff88801cf80000 R12: 0000000000000080 R13: 0000000000000406 R14: 0000000021000000 R15: ffff8880120d4ca0 FS: 00007f137f7e86c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002240 CR3: 0000000040256000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 6 bytes skipped: 0: df 41 80 filds -0x80(%rcx) 3: 3c 06 cmp $0x6,%al 5: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1) 9: 89 ff mov %edi,%edi b: e8 10 39 10 00 call 0x103920 10: 4d 8b 37 mov (%r15),%r14 13: 4d 89 ec mov %r13,%r12 16: 49 c1 ec 03 shr $0x3,%r12 1a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 21: fc ff df * 24: 41 80 3c 04 00 cmpb $0x0,(%r12,%rax,1) <-- trapping instruction 29: 74 08 je 0x33 2b: 4c 89 ef mov %r13,%rdi 2e: e8 ed 38 10 00 call 0x103920 33: 49 8b 5d 00 mov 0x0(%r13),%rbx 37: 4c 89 f7 mov %r14,%rdi --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup