Hello, syzbot found the following issue on: HEAD commit: b57b17e88bf5 Merge tag 'parisc-for-6.7-rc1-2' of git://git.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=14460084e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=d950a2e2e34359e2 dashboard link: https://syzkaller.appspot.com/bug?extid=c74f40907a9c0479af10 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15785fc4e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1469c9a8e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f611e08f3538/disk-b57b17e8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/035697c78f4a/vmlinux-b57b17e8.xz kernel image: https://storage.googleapis.com/syzbot-assets/5fd2581edc0c/bzImage-b57b17e8.xz Bisection is inconclusive: the first bad commit could be any of: d61ea1cb0095 userfaultfd: UFFD_FEATURE_WP_ASYNC 52526ca7fdb9 fs/proc/task_mmu: implement IOCTL to get and optionally clear info about PTEs bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1338e5a8e80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c74f40907a9c0479af10@xxxxxxxxxxxxxxxxxxxxxxxxx kvm_intel: L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5071 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:592 __kvm_handle_hva_range arch/x86/kvm/../../../virt/kvm/kvm_main.c:592 [inline] WARNING: CPU: 1 PID: 5071 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:592 kvm_mmu_notifier_invalidate_range_start+0x91b/0xa90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:811 Modules linked in: CPU: 1 PID: 5071 Comm: syz-executor531 Not tainted 6.6.0-syzkaller-16201-gb57b17e88bf5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:__kvm_handle_hva_range arch/x86/kvm/../../../virt/kvm/kvm_main.c:592 [inline] RIP: 0010:kvm_mmu_notifier_invalidate_range_start+0x91b/0xa90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:811 Code: 1b 8c 7e 00 45 84 e4 0f 85 9f f8 ff ff e8 dd 90 7e 00 0f 0b e9 93 f8 ff ff e8 d1 90 7e 00 0f 0b e9 d9 fd ff ff e8 c5 90 7e 00 <0f> 0b e9 e6 fc ff ff e8 b9 90 7e 00 0f 0b e9 a9 fc ff ff e8 ad 90 RSP: 0018:ffffc90003877ac8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000020ffc000 RCX: ffffffff810a0d7b RDX: ffff88807e9d1dc0 RSI: ffffffff810a141b RDI: 0000000000000006 RBP: ffffc90003877d60 R08: 0000000000000006 R09: 0000000020ffc000 R10: 0000000020ffc000 R11: ffffffff916014f0 R12: ffffc900015aea30 R13: 0000000000000001 R14: 0000000020ffc000 R15: ffffc900015b7810 FS: 00005555562b2380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd7cef33ae0 CR3: 000000007bde5000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> mn_hlist_invalidate_range_start mm/mmu_notifier.c:493 [inline] __mmu_notifier_invalidate_range_start+0x3b5/0x8e0 mm/mmu_notifier.c:548 mmu_notifier_invalidate_range_start include/linux/mmu_notifier.h:457 [inline] do_pagemap_scan+0xbd3/0xcc0 fs/proc/task_mmu.c:2422 do_pagemap_cmd+0x5e/0x80 fs/proc/task_mmu.c:2478 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f826e81d5e9 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc43d7c2d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffc43d7c2e0 RCX: 00007f826e81d5e9 RDX: 0000000020000040 RSI: 00000000c0606610 RDI: 0000000000000005 RBP: 00007f826e890610 R08: 0000000000000000 R09: 68742f636f72702f R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc43d7c518 R14: 0000000000000001 R15: 0000000000000001 </TASK> --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection 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
