From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 8522A285C9C for ; Fri, 22 Aug 2025 04:16:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755836196; cv=none; b=qJlr3o2j2bYy6b5oe6YR+mZxilyW110AFfAZeX788dgfXCH30vdt9hPBXxEQg1Kvr8JQDFm69BBEyD0AvcIM5sVR3VibEUR1flcKZITKRAufvQVSRBIkIwHwv6x2x7FXiRBz8835DKNDULjPoqihdo+/5SgJQbqx7dBIuHgceJ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755836196; c=relaxed/simple; bh=j0Y/IfFVjlXLBC4I3A/gXSt4jLrb/HR2+4WyXBZEyh0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=HGCWZSGGJG0EYUzP4m40UwhE2K0dSfnc5lhvQVE9SXc3VMk4EaXmvGaMruDhFj1rjzwnJXm/KVloWvTQ0gXlgUNSojon/Sbdxs7bKKSYEBuxEyY3FP2he9pJsbTUM9N+Ru/MlqAWamPsn7dGtlZLemuCTMMrgLFhuk/hTIcEPcs= 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=209.85.166.208 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-f208.google.com with SMTP id e9e14a558f8ab-3e6e61caefeso38126375ab.1 for ; Thu, 21 Aug 2025 21:16:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755836193; x=1756440993; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=S7uvD8/Hh04Ray/dr3eqanRrtzDNDO2JwOba62dm4Lc=; b=J0Ljm0J/PJR0ltgWbJmnr9b42IZHKgZsycFKy1pRBuiNnGAxghi3Pu9pIO81lyCNof Oikp0xOCYsdRLEBWLoCcehfZL881+DCuO12VsXIR16E0NQoJIjGVTNWOVIH2LPo3EuAk yAnnRlmVt1ticiZ15ZAwsSG/7DJkIzqzERG+XbPXMjLkdP4wKW6EKT4RS74KpqDqRPiw J0ih5dHAwsZ8G7peQja6k/2+DuNJebFujg4v98hLWUrdxGAkAi3Rd9IKw54sK+PxtTJq 9XNHN+vicYiBaDWrAur/0q3/t5pIuMJFmYOP0ivQG5HRovohmgGYjRlaQoGmpUlgKtPd tJaA== X-Forwarded-Encrypted: i=1; AJvYcCWWacBFjtHTpyVeEapv8iXU+EPYdc009pIXngUIC97J7H6IMtRintaw009pxcP6XJxf+qFBatKYyT9CMJo=@vger.kernel.org X-Gm-Message-State: AOJu0YwI8euR3UALXjvVmjhygf4uqMVJXnigeyK3O8EoxQY4njqK8/AL mk0WzU2hJwEjtsW53xW/9QgEE1YqqdwiGy2IG3H4+X7HokMwNJ0WIXg/7Q/p0GS4HtVYnWMFlud viaQX/a6BrmIab6YFTdlYAOan2BIqBcBKcWLIllc661SZ8l7JSe66zj9Oa0Q= X-Google-Smtp-Source: AGHT+IFwaCdiJ7lqFBsIffoZ1+cf64BbbV3JJhJA0zUvyfvTiZhbAzeFa5Q4fe2blHl8Ox+pYco9jyeLZObmcrIFIR5B/RD+Y5iA 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:b0:3e5:6a2e:e3bb with SMTP id e9e14a558f8ab-3e921a5d824mr30051815ab.13.1755836192799; Thu, 21 Aug 2025 21:16:32 -0700 (PDT) Date: Thu, 21 Aug 2025 21:16:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68a7ef20.050a0220.37038e.004d.GAE@google.com> Subject: [syzbot] [mm?] kernel BUG in page_table_check_set From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, pasha.tatashin@soleen.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8f5ae30d69d7 Linux 6.17-rc1 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=15f926f0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb dashboard link: https://syzkaller.appspot.com/bug?extid=49a796ed2c9709652f1e compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15faa7a2580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=144143bc580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/18a2e4bd0c4a/disk-8f5ae30d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3b5395881b25/vmlinux-8f5ae30d.xz kernel image: https://storage.googleapis.com/syzbot-assets/e875f4e3b7ff/Image-8f5ae30d.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+49a796ed2c9709652f1e@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:118! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 6740 Comm: syz.0.17 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : page_table_check_set+0x584/0x590 mm/page_table_check.c:118 lr : page_table_check_set+0x584/0x590 mm/page_table_check.c:118 sp : ffff80009c9674c0 x29: ffff80009c9674d0 x28: ffff80008fae0000 x27: 0000000000000002 x26: ffff0000c079ca80 x25: 0000000000000001 x24: 0000000000000001 x23: ffff0000c079ca80 x22: 000000000012b950 x21: 0000000000000001 x20: 0000000000000003 x19: 1ffff00012eb65b0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800080528a28 x15: 0000000000000001 x14: 1fffe000180f3950 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000180f3951 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000cdb05b80 x7 : ffff800080d16554 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800080d15b5c x2 : 0000000000000001 x1 : 0000000000000002 x0 : 0000000000000001 Call trace: page_table_check_set+0x584/0x590 mm/page_table_check.c:118 (P) __page_table_check_ptes_set+0x2a8/0x2e0 mm/page_table_check.c:209 page_table_check_ptes_set include/linux/page_table_check.h:76 [inline] __set_ptes_anysz arch/arm64/include/asm/pgtable.h:709 [inline] __set_ptes+0x4a0/0x504 arch/arm64/include/asm/pgtable.h:741 contpte_set_ptes+0x120/0x188 arch/arm64/mm/contpte.c:464 set_ptes arch/arm64/include/asm/pgtable.h:1794 [inline] modify_prot_commit_ptes+0x4e4/0x694 arch/arm64/mm/mmu.c:1556 prot_commit_flush_ptes mm/mprotect.c:197 [inline] commit_anon_folio_batch mm/mprotect.c:246 [inline] set_write_prot_commit_flush_ptes mm/mprotect.c:273 [inline] change_pte_range mm/mprotect.c:354 [inline] change_pmd_range mm/mprotect.c:570 [inline] change_pud_range mm/mprotect.c:633 [inline] change_p4d_range mm/mprotect.c:659 [inline] change_protection_range mm/mprotect.c:687 [inline] change_protection+0x1e84/0x3ff0 mm/mprotect.c:721 mprotect_fixup+0x504/0x744 mm/mprotect.c:837 do_mprotect_pkey+0x864/0xb30 mm/mprotect.c:993 __do_sys_mprotect mm/mprotect.c:1014 [inline] __se_sys_mprotect mm/mprotect.c:1011 [inline] __arm64_sys_mprotect+0x80/0x98 mm/mprotect.c:1011 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: d4210000 97e865fd d4210000 97e865fb (d4210000) ---[ 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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