Hello, syzbot found the following issue on: HEAD commit: 855684c7d938 Merge tag 'x86_tdx_for_6.9' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11776f71180000 kernel config: https://syzkaller.appspot.com/x/.config?x=9b384ef2b2d70c33 dashboard link: https://syzkaller.appspot.com/bug?extid=900d58a45dcaab9e4821 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=1536da66180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14c5078e180000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-855684c7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a13a9aaebd09/vmlinux-855684c7.xz kernel image: https://storage.googleapis.com/syzbot-assets/acac43529544/bzImage-855684c7.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+900d58a45dcaab9e4821@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5165 at arch/x86/kvm/mmu/tdp_mmu.c:1526 clear_dirty_gfn_range+0x3d6/0x540 arch/x86/kvm/mmu/tdp_mmu.c:1526 Modules linked in: CPU: 1 PID: 5165 Comm: syz-executor417 Not tainted 6.8.0-syzkaller-01185-g855684c7d938 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:clear_dirty_gfn_range+0x3d6/0x540 arch/x86/kvm/mmu/tdp_mmu.c:1526 Code: 00 31 ff 48 b8 00 00 00 00 00 00 30 00 48 21 d8 49 89 c5 48 89 c6 e8 e9 9c 6c 00 4d 85 ed 0f 84 b8 fe ff ff e8 cb a1 6c 00 90 <0f> 0b 90 e9 aa fe ff ff e8 bd a1 6c 00 e8 a8 39 53 00 31 ff 89 c6 RSP: 0018:ffffc900039a7570 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 06200000310acb77 RCX: ffffffff81204937 RDX: ffff888022a8c880 RSI: ffffffff81204945 RDI: 0000000000000007 RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000 R10: 0020000000000000 R11: 0000000000000002 R12: ffffc900039a75c8 R13: 0020000000000000 R14: 0000000000000200 R15: 0000000000000001 FS: 000055556ed44380(0000) GS:ffff88806b300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000027762000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> kvm_tdp_mmu_clear_dirty_slot+0x24f/0x2e0 arch/x86/kvm/mmu/tdp_mmu.c:1557 kvm_mmu_slot_leaf_clear_dirty+0x38b/0x490 arch/x86/kvm/mmu/mmu.c:6783 kvm_mmu_slot_apply_flags arch/x86/kvm/x86.c:12962 [inline] kvm_arch_commit_memory_region+0x299/0x490 arch/x86/kvm/x86.c:13031 kvm_commit_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1751 [inline] kvm_set_memslot+0x4d3/0x13e0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1994 __kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2129 [inline] __kvm_set_memory_region+0xdbc/0x1520 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2020 kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2150 [inline] kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2162 [inline] kvm_vm_ioctl+0x151c/0x3e20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5152 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl fs/ioctl.c:890 [inline] __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f4e1b1860f9 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:00007ffdd21061f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffdd21063c8 RCX: 00007f4e1b1860f9 RDX: 0000000020000180 RSI: 000000004020ae46 RDI: 0000000000000004 RBP: 00007f4e1b1f9610 R08: 00007ffdd21063c8 R09: 00007ffdd21063c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdd21063b8 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. 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
