Hello, syzbot found the following issue on: HEAD commit: 2c9b3512402e Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17abcfe9980000 kernel config: https://syzkaller.appspot.com/x/.config?x=e322acd9c27a6b84 dashboard link: https://syzkaller.appspot.com/bug?extid=23786faffb695f17edaa compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c112a5c3b199/disk-2c9b3512.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d0dae74e61d2/vmlinux-2c9b3512.xz kernel image: https://storage.googleapis.com/syzbot-assets/54648874d89c/bzImage-2c9b3512.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+23786faffb695f17edaa@xxxxxxxxxxxxxxxxxxxxxxxxx RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Oops: general protection fault, probably for non-canonical address 0xe000013ffffffffd: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: maybe wild-memory-access in range [0x000029ffffffffe8-0x000029ffffffffef] CPU: 0 PID: 11829 Comm: syz.1.1799 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:to_shadow_page arch/x86/kvm/mmu/spte.h:245 [inline] RIP: 0010:spte_to_child_sp arch/x86/kvm/mmu/spte.h:250 [inline] RIP: 0010:root_to_sp arch/x86/kvm/mmu/spte.h:267 [inline] RIP: 0010:is_page_fault_stale+0xc4/0x530 arch/x86/kvm/mmu/mmu.c:4517 Code: e9 00 01 00 00 48 b8 ff ff ff ff ff 00 00 00 48 21 c3 48 c1 e3 06 49 bc 28 00 00 00 00 ea ff ff 49 01 dc 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 6d b7 d8 00 4d 8b 2c 24 31 ff 4c RSP: 0018:ffffc9000fc6f6f0 EFLAGS: 00010202 RAX: 0000053ffffffffd RBX: 00003fffffffffc0 RCX: ffff88806a8bda00 RDX: 0000000000000000 RSI: 000fffffffffffff RDI: 00000000000129d3 RBP: 00000000000129d3 R08: ffffffff8120c8e0 R09: 1ffff920005e6c00 R10: dffffc0000000000 R11: fffff520005e6c01 R12: 000029ffffffffe8 R13: dffffc0000000000 R14: ffffc9000fc6f800 R15: ffff88807cbed000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0063) knlGS:00000000f5d46b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000576d24c0 CR3: 000000007d930000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> kvm_tdp_mmu_page_fault arch/x86/kvm/mmu/mmu.c:4662 [inline] kvm_tdp_page_fault+0x25c/0x320 arch/x86/kvm/mmu/mmu.c:4693 kvm_mmu_do_page_fault+0x589/0xca0 arch/x86/kvm/mmu/mmu_internal.h:323 kvm_tdp_map_page arch/x86/kvm/mmu/mmu.c:4715 [inline] kvm_arch_vcpu_pre_fault_memory+0x2db/0x5a0 arch/x86/kvm/mmu/mmu.c:4760 kvm_vcpu_pre_fault_memory+0x24c/0x4b0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4418 kvm_vcpu_ioctl+0xa47/0xea0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4648 kvm_vcpu_compat_ioctl+0x242/0x450 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4700 __do_compat_sys_ioctl fs/ioctl.c:1007 [inline] __se_compat_sys_ioctl+0x51c/0xca0 fs/ioctl.c:950 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f92579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5d4656c EFLAGS: 00000206 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000c040aed5 RDX: 0000000020000040 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:to_shadow_page arch/x86/kvm/mmu/spte.h:245 [inline] RIP: 0010:spte_to_child_sp arch/x86/kvm/mmu/spte.h:250 [inline] RIP: 0010:root_to_sp arch/x86/kvm/mmu/spte.h:267 [inline] RIP: 0010:is_page_fault_stale+0xc4/0x530 arch/x86/kvm/mmu/mmu.c:4517 Code: e9 00 01 00 00 48 b8 ff ff ff ff ff 00 00 00 48 21 c3 48 c1 e3 06 49 bc 28 00 00 00 00 ea ff ff 49 01 dc 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 6d b7 d8 00 4d 8b 2c 24 31 ff 4c RSP: 0018:ffffc9000fc6f6f0 EFLAGS: 00010202 RAX: 0000053ffffffffd RBX: 00003fffffffffc0 RCX: ffff88806a8bda00 RDX: 0000000000000000 RSI: 000fffffffffffff RDI: 00000000000129d3 RBP: 00000000000129d3 R08: ffffffff8120c8e0 R09: 1ffff920005e6c00 R10: dffffc0000000000 R11: fffff520005e6c01 R12: 000029ffffffffe8 R13: dffffc0000000000 R14: ffffc9000fc6f800 R15: ffff88807cbed000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0063) knlGS:00000000f5d46b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000576d24c0 CR3: 000000007d930000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e9 00 01 00 00 jmp 0x105 5: 48 b8 ff ff ff ff ff movabs $0xffffffffff,%rax c: 00 00 00 f: 48 21 c3 and %rax,%rbx 12: 48 c1 e3 06 shl $0x6,%rbx 16: 49 bc 28 00 00 00 00 movabs $0xffffea0000000028,%r12 1d: ea ff ff 20: 49 01 dc add %rbx,%r12 23: 4c 89 e0 mov %r12,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 e7 mov %r12,%rdi 34: e8 6d b7 d8 00 call 0xd8b7a6 39: 4d 8b 2c 24 mov (%r12),%r13 3d: 31 ff xor %edi,%edi 3f: 4c rex.WR --- 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 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
