From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f205.google.com (mail-il1-f205.google.com [209.85.166.205]) (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 72F0F2F8BC0 for ; Wed, 29 Oct 2025 18:03:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761761014; cv=none; b=CI/opdlii6hg8rdd55ESm02HQHGD78kXeYZraTreNnCxVA/riU+bs9ND56tU40QPjarmmBZkKIqxPl8GNYkg/kA3ZtjVOicrZvmIjJsspEnKXTxcxX/WpaxdChRXXz2hLEwghNepeqFutOME2rldWlE3R1X9vDls2ycLuuBExWA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761761014; c=relaxed/simple; bh=syqo7xCuXUYrqut5p8BBEanGYt8ZtnsUm4qRlabrwco=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Qge6BbTbbeOaxaEeie0U0FX3PQJsHgyoNl2vitqk4iejQOju9XeImDoZeXk2zHYJHz4XsznWCnHKs7mm+IuXNlWyFYVHOyeURw+KjNyR6jdjJzMZHcbPuCcE5+YoQ/IUip1z5gjlHY4Kd/gTOb54F8S+IoB732mwAadcG5f3Exo= 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=209.85.166.205 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-f205.google.com with SMTP id e9e14a558f8ab-43300f41682so1014515ab.1 for ; Wed, 29 Oct 2025 11:03:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761761011; x=1762365811; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=jECNCXKfYRDxfdNyvFJKOWdk9c6wb6d7+f4Gyt+JTNQ=; b=Tfo1X79YR/pBNE5aQXzYce4einqZAXBZt9+82z8928j54plEK7jsCIaR4MQssGW1vd FNjrKYXGAS4HdhrFEcRXh5EfHnG+ORB4NHz+qgkeuVCeRIh0Mi78GG+C7T+GvCcuvXjr 9+vQipqpeyCoHjSAGzabqDwcXAci5Ll7wZYLp+9aR3bM5Q8BocaHa9Enr6fTqtJ3pjkU IeCbuQ+BsWcf/oh3u4afQyN7RnbfbQq1BPCIaJk9ECrXfMKRLqMVAsFNoNGN5SBtlGid TJtn8PLTryC0EhW+cEUtgEOgwPVvIjtVUT5InKvcZDOqdkHqrae94NgA1Hk/bEavcEG1 atCA== X-Forwarded-Encrypted: i=1; AJvYcCU667Lje2jMQ2sq3JevoCxs0nIMgMoty8lCdd1SP0ZNEWsENyk5GRgZzeBM5Q+bw68yTcKN/hE=@vger.kernel.org X-Gm-Message-State: AOJu0YyeEDhtsCFWQs90PnG5kiVloKt3cIpoHAZmfxHZsr6x6JiIQGmx Mq0sY0F2YrJyCGtR43MH8OliO1ZJrA04zi6imAZm2HmOoMzi4ezB+tEblnN2vRc2P3RdtVuXwUq XzIqr7SNco73isoUTa5P0RcvDIZHcCnYbT0nEJnuAd/4vI3yINsF7XyBOmy8= X-Google-Smtp-Source: AGHT+IGjjScvaZdUlvuzShIZdlgiBoqfNig3J+Ddu9saSgtyIVixyMSUgpMK292LoYOesfx22ZRpn+tuHMuONI7l3xxBdvNCclqy Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3c04:b0:430:d5b8:6160 with SMTP id e9e14a558f8ab-432f907430dmr50783115ab.29.1761761011589; Wed, 29 Oct 2025 11:03:31 -0700 (PDT) Date: Wed, 29 Oct 2025 11:03:31 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <690256f3.050a0220.32483.0219.GAE@google.com> Subject: [syzbot] [net?] BUG: unable to handle kernel NULL pointer dereference in pc_clock_settime From: syzbot To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, richardcochran@gmail.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: b98c94eed4a9 arm64: mte: Do not warn if the page is alread.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=11260e14580000 kernel config: https://syzkaller.appspot.com/x/.config?x=158bd6857eb7a550 dashboard link: https://syzkaller.appspot.com/bug?extid=a546141ca6d53b90aba3 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2c82e514449b/disk-b98c94ee.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a322ed38c368/vmlinux-b98c94ee.xz kernel image: https://storage.googleapis.com/syzbot-assets/059db7d7114e/Image-b98c94ee.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a546141ca6d53b90aba3@syzkaller.appspotmail.com Unable to handle kernel NULL pointer dereferenc Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Mem abort info: ESR = 0x0000000086000006 EC = 0x21: IABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault user pgtable: 4k pages, 48-bit VAs, pgdp=0000000133ddc000 [0000000000000000] pgd=0800000105883403, p4d=0800000105883403, pud=0800000127709403, pmd=0000000000000000 Internal error: Oops: 0000000086000006 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 7008 Comm: syz.4.69 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 83400805 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=-c) pc : 0x0 lr : ptp_clock_settime+0x148/0x264 drivers/ptp/ptp_clock.c:107 sp : ffff8000a2957c40 x29: ffff8000a2957c40 x28: ffff0000cbad5c40 x27: 00000000fffffffb x26: 1fffe0001975ab88 x25: 000000003b9aca00 x24: dfff800000000000 x23: 00000001ed5d7404 x22: 0000000000989680 x21: 0000000000000000 x20: ffff0000cca30600 x19: ffff8000a2957d00 x18: 00000000ffffffff x17: ffff800093305000 x16: ffff800082de95c8 x15: 0000000000000001 x14: 1ffff0001452af70 x13: 0000000000000000 x12: 0000000000000000 x11: ffff70001452af71 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000000 x7 : ffff8000877add70 x6 : 0000000000000000 x5 : ffff800093586d90 x4 : 0000000000000002 x3 : ffff80008adffef8 x2 : 0000000000000001 x1 : ffff8000a2957d00 x0 : ffff0000cca30600 Call trace: 0x0 (P) pc_clock_settime+0x224/0x298 kernel/time/posix-clock.c:304 __do_sys_clock_settime kernel/time/posix-timers.c:1131 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1115 [inline] __arm64_sys_clock_settime+0x208/0x254 kernel/time/posix-timers.c:1115 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x1e0/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 ---[ end trace 0000000000000000 ]--- --- 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