general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057] CPU: 1 PID: 30621 Comm: syz-executor.4 Not tainted 5.18.0-rc2-syzkaller-00351-ga2c29ccd9477 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__dentry_path+0x215/0x740 fs/d_path.c:342 Code: c0 09 31 ff 41 89 ed 41 83 e5 01 44 89 ee e8 92 df 97 ff 45 85 ed 75 ce e8 68 dd 97 ff 48 8b 44 24 20 89 6c 24 18 48 c1 e8 03 <42> 80 3c 30 00 0f 85 d2 04 00 00 48 8b 44 24 10 83 e5 01 89 6c 24 RSP: 0018:ffffc90006237c10 EFLAGS: 00010206 RAX: 000000000000000a RBX: ffffffff8ba14680 RCX: ffffc9000d1e7000 RDX: 0000000000040000 RSI: ffffffff81e13e18 RDI: 0000000000000003 RBP: 0000000000007112 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff81e13dd5 R11: 0000000000000001 R12: 0000000000000fff R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888073398fff FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f7fb5b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000033421000 CR3: 0000000071fb0000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dentry_path_raw+0xc2/0x110 fs/d_path.c:367 kvm_uevent_notify_change.part.0+0x215/0x450 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5492 kvm_uevent_notify_change arch/x86/kvm/../../../virt/kvm/kvm_main.c:5459 [inline] kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1198 [inline] kvm_put_kvm+0xf7/0xb70 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1264 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:4795 [inline] kvm_dev_ioctl+0x85d/0x1c70 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4811 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:968 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fba549 Code: 03 74 c0 01 10 05 03 74 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 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7fb55cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000000ae01 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__dentry_path+0x215/0x740 fs/d_path.c:342 Code: c0 09 31 ff 41 89 ed 41 83 e5 01 44 89 ee e8 92 df 97 ff 45 85 ed 75 ce e8 68 dd 97 ff 48 8b 44 24 20 89 6c 24 18 48 c1 e8 03 <42> 80 3c 30 00 0f 85 d2 04 00 00 48 8b 44 24 10 83 e5 01 89 6c 24 RSP: 0018:ffffc90006237c10 EFLAGS: 00010206 RAX: 000000000000000a RBX: ffffffff8ba14680 RCX: ffffc9000d1e7000 RDX: 0000000000040000 RSI: ffffffff81e13e18 RDI: 0000000000000003 RBP: 0000000000007112 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff81e13dd5 R11: 0000000000000001 R12: 0000000000000fff R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888073398fff FS: 0000000000000000(0000) GS:ffff8880b9c00000(0063) knlGS:00000000f7fb5b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7f9a598 CR3: 0000000071fb0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c0 09 31 rorb $0x31,(%rcx) 3: ff 41 89 incl -0x77(%rcx) 6: ed in (%dx),%eax 7: 41 83 e5 01 and $0x1,%r13d b: 44 89 ee mov %r13d,%esi e: e8 92 df 97 ff callq 0xff97dfa5 13: 45 85 ed test %r13d,%r13d 16: 75 ce jne 0xffffffe6 18: e8 68 dd 97 ff callq 0xff97dd85 1d: 48 8b 44 24 20 mov 0x20(%rsp),%rax 22: 89 6c 24 18 mov %ebp,0x18(%rsp) 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 0f 85 d2 04 00 00 jne 0x507 35: 48 8b 44 24 10 mov 0x10(%rsp),%rax 3a: 83 e5 01 and $0x1,%ebp 3d: 89 .byte 0x89 3e: 6c insb (%dx),%es:(%rdi) 3f: 24 .byte 0x24