general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] CPU: 1 PID: 300 Comm: syz-executor378 Not tainted 6.1.57-syzkaller-00085-g6465e29536ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:do_rmdir+0x339/0x630 fs/namei.c:4174 Code: ff 4c 89 64 24 50 72 0d e8 d4 1b ad ff 45 89 fc e9 99 00 00 00 49 8d 5f 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 69 bb f3 ff 48 83 3b 00 74 5d e8 9e RSP: 0018:ffffc90000d97de0 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffffc90000d97f08 R08: ffffffff81caa66b R09: fffff520001b2f9b R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881200fff10 R13: ffffc90000d97e60 R14: 1ffff1102401ffe2 R15: 0000000000000008 FS: 00007f413279a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555571bf350 CR3: 000000011f854000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rmdir fs/namei.c:4201 [inline] __se_sys_rmdir fs/namei.c:4199 [inline] __x64_sys_rmdir+0x49/0x50 fs/namei.c:4199 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f41327d8479 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f413279a218 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007f4132865408 RCX: 00007f41327d8479 RDX: 00007f41327d8479 RSI: 00000000000f4240 RDI: 0000000020000080 RBP: 00007f4132865400 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f413283201c R13: 00007f4132832038 R14: 00007f413283000e R15: 0030656c69662f30 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_rmdir+0x339/0x630 fs/namei.c:4174 Code: ff 4c 89 64 24 50 72 0d e8 d4 1b ad ff 45 89 fc e9 99 00 00 00 49 8d 5f 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 69 bb f3 ff 48 83 3b 00 74 5d e8 9e RSP: 0018:ffffc90000d97de0 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffffc90000d97f08 R08: ffffffff81caa66b R09: fffff520001b2f9b R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881200fff10 R13: ffffc90000d97e60 R14: 1ffff1102401ffe2 R15: 0000000000000008 FS: 00007f413279a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4132758d58 CR3: 000000011f854000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: ff 4c 89 64 decl 0x64(%rcx,%rcx,4) 4: 24 50 and $0x50,%al 6: 72 0d jb 0x15 8: e8 d4 1b ad ff call 0xffad1be1 d: 45 89 fc mov %r15d,%r12d 10: e9 99 00 00 00 jmp 0xae 15: 49 8d 5f 30 lea 0x30(%r15),%rbx 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 69 bb f3 ff call 0xfff3bba1 38: 48 83 3b 00 cmpq $0x0,(%rbx) 3c: 74 5d je 0x9b 3e: e8 .byte 0xe8 3f: 9e sahf