From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f77.google.com (mail-oo1-f77.google.com [209.85.161.77]) (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 A6DFD41A519 for ; Wed, 5 Aug 2026 22:43:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785969810; cv=none; b=Mow6DdzT7YNvmaKnGZae/7hXGmZ5wU1HeouOwDqJeEJ0fvg+i4prv8mMXDna3W5JXIxeFpKzSoRYGa/jzP5VOzWbOnbIdj83rAT6b/ESxm/9fERHvuR6vpBtH+Wx7tDW/TteGtpDdmP3/uhk25Hy97n742OO/j9n6mLoXvPnS+4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785969810; c=relaxed/simple; bh=CCqHGcWTrElOniPrdwAZd2rTB3ZJDF/4seGz8lpqdnI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Kgc1OfJrTqBnZIg6bM/0mxETk7qS8deFnGA30jHVJvFRZpWMFwH+Q9n69ERMWDn+ycjfY8Qn5a3eHN+6znxHZIDcjXgVsxrX2SrilvuNcG6cH7JGMs1i0m5iZILHLoYKXdFg04mWTaJkIWlPIiQJC5dOPBE0Lids5n92SQB6m0w= 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=209.85.161.77 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-oo1-f77.google.com with SMTP id 006d021491bc7-6ae46631c42so1283193eaf.2 for ; Wed, 05 Aug 2026 15:43:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785969807; x=1786574607; 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=ulgkTuRsYz1MvAm/nQRIwHTPfs+a91ZykIsUVmgnq98=; b=s6oU5RO5sT1f2PJYuqZLF9GsUs2eECU6dIzixJ53ERy/YdEECCgWSK5ra8JV10WWOH iYZuuwp/EDMljwkNoFw5vpEriNxRpSimXdAwWfmwBQxTIPYxxMYhl18fpHqWo7D/IScM 9+nrB0WM1/HB5WB4qOvPHc8sCsXAj4QZVG7F8yDTQsikXbQYArRhEVgqujQ52WOI1zE/ 0tyKdyC1WJRUb4r3LOPHBm5NWUAyoP9ZBiwaF1YyneGppGgUhuvL+Q5hk+lUdmYzhGqV wqoBBLgwS5WdeeNPj8wAhGBjurWslkEyqMcVDvgJ9koCbFxIkVXDa1ZieG4VH+Op5hBA g8TA== X-Forwarded-Encrypted: i=1; AHgh+Ro5snvSk1az/+eXnO1ybKrfd77SRRoGG2Sfp1Pq4jahLWx7ewNOxQSxhRgbZstb3F+Wtnq2RwWWtMY1Zj8=@vger.kernel.org X-Gm-Message-State: AOJu0Yx+lYvGUGP2hRCSEajbSgKhJdJLvz2A9lV471GxgXNztQ5taJIX 3dcz08dFe70kz0zp8BA+tCaZbmYKuTeEZegodugH4wLWC+oT0baq5nFQrLFzidOcrrahMv9sOjB IlV711f133GM12T6atLvz+IJvVtKhYv8LKSRpMSTWVD4fxUykMEnc8oiN92Y= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2916:b0:69d:9dfb:7928 with SMTP id 006d021491bc7-6ae96c1002fmr5484910eaf.3.1785969807558; Wed, 05 Aug 2026 15:43:27 -0700 (PDT) Date: Wed, 05 Aug 2026 15:43:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a73bc8f.5aeeccc9.207e63.0003.GAE@google.com> Subject: [syzbot] [usb?] BUG: unable to handle kernel paging request in ioread32 From: syzbot To: YehezkelShB@gmail.com, andreas.noever@gmail.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com, westeri@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 848acc8ffe1b Merge tag 'fsverity-for-linus' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1209b649580000 kernel config: https://syzkaller.appspot.com/x/.config?x=145fa60d73086782 dashboard link: https://syzkaller.appspot.com/bug?extid=97999b836ee62ddb0181 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15febe32580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=145813b9580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-848acc8f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6fb497cc0c8d/vmlinux-848acc8f.xz kernel image: https://storage.googleapis.com/syzbot-assets/663ccee34982/bzImage-848acc8f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+97999b836ee62ddb0181@syzkaller.appspotmail.com BUG: unable to handle page fault for address: 00000000000556e0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 275ae067 P4D 275ae067 PUD 0 Oops: Oops: 0000 [#1] SMP KASAN NOPTI CPU: 2 UID: 0 PID: 5940 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline] RIP: 0010:ioread32+0x87/0xc0 lib/iomap.c:99 Code: 2d 0e 3b 5a 0a 31 ff 89 ee e8 55 f0 e3 fc 85 ed 75 28 e8 dc f5 e3 fc bb ff ff ff ff 89 d8 5b 5d e9 ce 03 98 06 e8 c9 f5 e3 fc <8b> 1b e8 c2 f5 e3 fc 89 d8 5b 5d c3 cc cc cc cc e8 b4 f5 e3 fc 83 RSP: 0018:ffffc90004c878d0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000000556e0 RCX: ffffffff85266eab RDX: ffff88803214a540 RSI: ffffffff85266f17 RDI: ffff88803214a540 RBP: ffff888055c95c38 R08: 0000000000000007 R09: 000000000003ffff R10: 00000000000556e0 R11: 0000000000000000 R12: 1ffff92000990f29 R13: ffff88802323a0d0 R14: ffff888055c95c80 R15: ffffc90004c87968 FS: 000055557cf64500(0000) GS:ffff8880d5fd8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000556e0 CR3: 0000000058784000 CR4: 0000000000352ef0 Call Trace: nhi_probe+0xdc/0x8f0 drivers/thunderbolt/nhi.c:1198 nhi_pci_probe+0x322/0x5a0 drivers/thunderbolt/pci.c:479 local_pci_probe+0xdd/0x1b0 drivers/pci/pci-driver.c:332 pci_call_probe+0x176/0x800 drivers/pci/pci-driver.c:394 __pci_device_probe drivers/pci/pci-driver.c:455 [inline] pci_device_probe+0x1cd/0x370 drivers/pci/pci-driver.c:489 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:706 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868 device_driver_attach+0xd1/0x220 drivers/base/dd.c:1203 bind_store+0xf4/0x190 drivers/base/bus.c:267 drv_attr_store+0x74/0xb0 drivers/base/bus.c:125 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6ac/0x1050 fs/read_write.c:687 ksys_write+0x12a/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb04af9e019 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:00007fff5f802b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb04b225fa0 RCX: 00007fb04af9e019 RDX: 000000000000000d RSI: 0000200000000240 RDI: 0000000000000005 RBP: 00007fb04b03500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb04b225fac R14: 00007fb04b225fa0 R15: 00007fb04b225fa0 Modules linked in: CR2: 00000000000556e0 ---[ end trace 0000000000000000 ]--- RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline] RIP: 0010:ioread32+0x87/0xc0 lib/iomap.c:99 Code: 2d 0e 3b 5a 0a 31 ff 89 ee e8 55 f0 e3 fc 85 ed 75 28 e8 dc f5 e3 fc bb ff ff ff ff 89 d8 5b 5d e9 ce 03 98 06 e8 c9 f5 e3 fc <8b> 1b e8 c2 f5 e3 fc 89 d8 5b 5d c3 cc cc cc cc e8 b4 f5 e3 fc 83 RSP: 0018:ffffc90004c878d0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000000556e0 RCX: ffffffff85266eab RDX: ffff88803214a540 RSI: ffffffff85266f17 RDI: ffff88803214a540 RBP: ffff888055c95c38 R08: 0000000000000007 R09: 000000000003ffff R10: 00000000000556e0 R11: 0000000000000000 R12: 1ffff92000990f29 R13: ffff88802323a0d0 R14: ffff888055c95c80 R15: ffffc90004c87968 FS: 000055557cf64500(0000) GS:ffff8880d5fd8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000556e0 CR3: 0000000058784000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 2d 0e 3b 5a 0a sub $0xa5a3b0e,%eax 5: 31 ff xor %edi,%edi 7: 89 ee mov %ebp,%esi 9: e8 55 f0 e3 fc call 0xfce3f063 e: 85 ed test %ebp,%ebp 10: 75 28 jne 0x3a 12: e8 dc f5 e3 fc call 0xfce3f5f3 17: bb ff ff ff ff mov $0xffffffff,%ebx 1c: 89 d8 mov %ebx,%eax 1e: 5b pop %rbx 1f: 5d pop %rbp 20: e9 ce 03 98 06 jmp 0x69803f3 25: e8 c9 f5 e3 fc call 0xfce3f5f3 * 2a: 8b 1b mov (%rbx),%ebx <-- trapping instruction 2c: e8 c2 f5 e3 fc call 0xfce3f5f3 31: 89 d8 mov %ebx,%eax 33: 5b pop %rbx 34: 5d pop %rbp 35: c3 ret 36: cc int3 37: cc int3 38: cc int3 39: cc int3 3a: e8 b4 f5 e3 fc call 0xfce3f5f3 3f: 83 .byte 0x83 --- 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