general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 1 PID: 473 Comm: syz.0.15 Not tainted 5.10.237-syzkaller-1007474-gcf6ed0f1511d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:do_rmdir+0x1cf/0x620 fs/namei.c:3905 Code: ff 72 0d e8 83 32 bb ff 41 89 dc e9 80 00 00 00 48 89 5c 24 10 4c 8d 63 30 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 13 22 f5 ff 49 83 3c 24 00 74 39 e8 RSP: 0018:ffffc90002fc7e40 EFLAGS: 00010207 RAX: 0000000000000006 RBX: 0000000000000006 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888116068000 RBP: ffffc90002fc7f18 R08: dffffc0000000000 R09: ffffed10241e8fc6 R10: ffffed10241e8fc6 R11: 1ffff110241e8fc5 R12: 0000000000000036 R13: 1ffff110241e8fc0 R14: ffffc90002fc7ea0 R15: 00000000ffffff9c FS: 00007effaec026c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007effaec01fa8 CR3: 00000001112d5000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rmdir fs/namei.c:3930 [inline] __se_sys_rmdir fs/namei.c:3928 [inline] __x64_sys_rmdir+0x49/0x50 fs/namei.c:3928 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7effaf199b59 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007effaec02048 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007effaf32a038 RCX: 00007effaf199b59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007effaf208e5d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007effaf32a038 R15: 00007fffdbaa56c8 Modules linked in: ---[ end trace 8ecb1e6323e5b0e7 ]--- RIP: 0010:do_rmdir+0x1cf/0x620 fs/namei.c:3905 Code: ff 72 0d e8 83 32 bb ff 41 89 dc e9 80 00 00 00 48 89 5c 24 10 4c 8d 63 30 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 13 22 f5 ff 49 83 3c 24 00 74 39 e8 RSP: 0018:ffffc90002fc7e40 EFLAGS: 00010207 RAX: 0000000000000006 RBX: 0000000000000006 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888116068000 RBP: ffffc90002fc7f18 R08: dffffc0000000000 R09: ffffed10241e8fc6 R10: ffffed10241e8fc6 R11: 1ffff110241e8fc5 R12: 0000000000000036 R13: 1ffff110241e8fc0 R14: ffffc90002fc7ea0 R15: 00000000ffffff9c FS: 00007effaec026c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007effaec02d58 CR3: 00000001112d5000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: ff 72 0d push 0xd(%rdx) 3: e8 83 32 bb ff call 0xffbb328b 8: 41 89 dc mov %ebx,%r12d b: e9 80 00 00 00 jmp 0x90 10: 48 89 5c 24 10 mov %rbx,0x10(%rsp) 15: 4c 8d 63 30 lea 0x30(%rbx),%r12 19: 4c 89 e0 mov %r12,%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: 4c 89 e7 mov %r12,%rdi 33: e8 13 22 f5 ff call 0xfff5224b 38: 49 83 3c 24 00 cmpq $0x0,(%r12) 3d: 74 39 je 0x78 3f: e8 .byte 0xe8