From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f207.google.com (mail-oi1-f207.google.com [209.85.167.207]) (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 E21B723395F for ; Wed, 12 Aug 2026 00:11:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786493493; cv=none; b=hIqjeKb6TSQVWPKGsI52e7e2MqwR+r8MbpiQQyulQ2msU99XnLxvWRKEgsbQ3vUwDmIUneB2ReOdwO24X77W4VwvKm9JS8oBW4PWkuXYFI6Ukjlj6sD95LmAONMXGsz7BAKvrWb66cLKy1sh0sncAKy9xL4CpkP/PWpFOEF4SM4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786493493; c=relaxed/simple; bh=f5k9/PhSgQcfro65mjaeAUfa6dfNMMmDbDbaksjcZ8w=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=XRVB2wYGaf1aabeTJLJsol5bqLPBWcGuJRKMtJkO1LpEKrrKM4Oly4TF1/Fer54Q0Vw0U7xaQ7cgB7u6JLPZVVq0Rd8CTp7jNOYJR3vEaLzkiE2tZ6iVaPmIAA7sgxzxOD1QYPQJ8s4nRzZ/r+v/ifk6yyPLMnvKudDJzkK7oy4= 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=209.85.167.207 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-oi1-f207.google.com with SMTP id 5614622812f47-4b19ce23e5cso135921b6e.1 for ; Tue, 11 Aug 2026 17:11:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786493489; x=1787098289; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=/X6cw5Wfbro1zK/qZ0Aq85IiIvVQqv51gnPAqgZUWVs=; b=fxajpLHKl9DIlUAxQuiuN4nVSHsJNmnQnBd/0g/iw3qr0r0pslW4sv/S2XbsaAf5tb GCM/gCiv5GO2iqt2B+dSo22GYk6PUBspEyNUDwMAIvjp4uMAVgOtT/2IBh0jQMxWonA2 tFZ08Srlp66JuOevpu100L4Y9ORSFk0e8s07M81EWmR+uee6Ix1Cioq3hg2ItUpfhvED 8EzszJHQdpHRUFtkqsvqMrBCLS8OUgUuJVUBq4HVg5c8QstCl65i1j8UGczAUO79ivmI 7lwBchXQgLskSsFVU1hD8Wa0ig07my4u8UKOM9aBEz+bm5HHdtKYhYP5411n8ylbRwDe 0FNA== X-Forwarded-Encrypted: i=1; AHgh+RpkTu5GMLgge1dS3+hJIadIykBatqbOooeO3z1UolAESozDQRY7MFfjLI5TZ8YWv44qIFYbDmi0vq89HrA=@vger.kernel.org X-Gm-Message-State: AOJu0Yx+eWrbx1eNs1z76mGTn0pUpbAWUZcJoCy4Q8iz0kutnYynxiiv 2+1KgzC6Q4SRuqkfdcWOK/P3IdPcyJqYJCJD8yuRRAzLxRaT0caLYTu+wsPV+YLMwuoHz2YFoC9 S7SOWmLF7L5MEKraSeyMX0bDD1WPsqA7xUPbvqUjWgs5xOVMrVWR5E1YCiqM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:30a1:b0:495:f79d:b08e with SMTP id 5614622812f47-4b210c95cb5mr1192811b6e.21.1786493489363; Tue, 11 Aug 2026 17:11:29 -0700 (PDT) Date: Tue, 11 Aug 2026 17:11:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a7bba31.3668565d.e8814.0008.GAE@google.com> Subject: [syzbot] [block?] kernel BUG in folio_unmap_invalidate From: syzbot To: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: a59f57e2aa12 Merge tag 'watchdog-for-v7.2-rc7' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13196fb9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=158601bb8cb292dd dashboard link: https://syzkaller.appspot.com/bug?extid=c393fb3e3a7a1bfa5927 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/52f4874481e5/disk-a59f57e2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bb5cb2b16c65/vmlinux-a59f57e2.xz kernel image: https://storage.googleapis.com/syzbot-assets/e5cc16a680f1/bzImage-a59f57e2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c393fb3e3a7a1bfa5927@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at mm/truncate.c:632! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 13095 Comm: syz.4.2094 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:folio_unmap_invalidate+0x7ee/0x830 mm/truncate.c:632 Code: c6 c0 71 78 8b e8 a2 e9 1d ff 90 0f 0b e8 3a f4 bb ff 48 89 df 48 c7 c6 c0 71 78 8b e8 8b e9 1d ff 90 0f 0b e8 23 f4 bb ff 90 <0f> 0b e8 1b f4 bb ff 48 89 df 48 c7 c6 c0 71 78 8b e8 6c e9 1d ff RSP: 0018:ffffc900064a7830 EFLAGS: 00010287 RAX: ffffffff8209d53d RBX: ffffea0000b443c0 RCX: 0000000000080000 RDX: ffffc90013401000 RSI: 0000000000038e38 RDI: 0000000000038e39 RBP: ffffea0000b443c8 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff9400016887f R12: 0000000000000001 R13: dffffc0000000000 R14: 1ffffd4000168879 R15: 1ffffd4000168878 FS: 00007f0ec44146c0(0000) GS:ffff888125c46000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0ec3387ff8 CR3: 0000000061190000 CR4: 00000000003526f0 Call Trace: invalidate_inode_pages2_range+0x62c/0xb30 mm/truncate.c:726 blkdev_direct_write+0x48/0x140 block/fops.c:690 blkdev_write_iter+0x530/0x700 block/fops.c:765 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61e/0xbb0 fs/read_write.c:687 ksys_write+0x156/0x270 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0ec61fe0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0ec4414028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0ec6486180 RCX: 00007f0ec61fe0d9 RDX: 00000000ffffffdb RSI: 0000000000000000 RDI: 0000000000000008 RBP: 00007f0ec6295024 R08: 0000000000000000 R09: 0000000000000000 R13: 00007f0ec6486218 R14: 00007f0ec6486180 R15: 00007ffc8fc250d8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_unmap_invalidate+0x7ee/0x830 mm/truncate.c:632 Code: c6 c0 71 78 8b e8 a2 e9 1d ff 90 0f 0b e8 3a f4 bb ff 48 89 df 48 c7 c6 c0 71 78 8b e8 8b e9 1d ff 90 0f 0b e8 23 f4 bb ff 90 <0f> 0b e8 1b f4 bb ff 48 89 df 48 c7 c6 c0 71 78 8b e8 6c e9 1d ff RSP: 0018:ffffc900064a7830 EFLAGS: 00010287 RAX: ffffffff8209d53d RBX: ffffea0000b443c0 RCX: 0000000000080000 RDX: ffffc90013401000 RSI: 0000000000038e38 RDI: 0000000000038e39 RBP: ffffea0000b443c8 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff9400016887f R12: 0000000000000001 R13: dffffc0000000000 R14: 1ffffd4000168879 R15: 1ffffd4000168878 FS: 00007f0ec44146c0(0000) GS:ffff888125d46000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c240003 CR3: 0000000061190000 CR4: 00000000003526f0 --- 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