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: 318 Comm: syz-executor.0 Not tainted 5.10.236-syzkaller-1007372-gab07aeb2c93d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:do_rmdir+0x1cf/0x620 fs/namei.c:3905 Code: ff 72 0d e8 a3 3b 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:ffffc90000f27e40 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000008 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881214f93c0 RBP: ffffc90000f27f18 R08: dffffc0000000000 R09: ffffed102386b0fa R10: ffffed102386b0fa R11: 1ffff1102386b0f9 R12: 0000000000000038 R13: 1ffff1102386b0f4 R14: ffffc90000f27ea0 R15: 00000000ffffff9c FS: 00007fd487ff56c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd488015fa8 CR3: 000000010fa39000 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: 0033:0x7fd488494de9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007fd487ff50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007fd4885c3050 RCX: 00007fd488494de9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007fd4884e147a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fd4885c3050 R15: 00007ffc83151038 Modules linked in: ---[ end trace 229a6cf5352da586 ]--- RIP: 0010:do_rmdir+0x1cf/0x620 fs/namei.c:3905 Code: ff 72 0d e8 a3 3b 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:ffffc90000f27e40 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000008 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881214f93c0 RBP: ffffc90000f27f18 R08: dffffc0000000000 R09: ffffed102386b0fa R10: ffffed102386b0fa R11: 1ffff1102386b0f9 R12: 0000000000000038 R13: 1ffff1102386b0f4 R14: ffffc90000f27ea0 R15: 00000000ffffff9c FS: 00007fd487ff56c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd488015fa8 CR3: 000000010fa39000 CR4: 00000000003506a0 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 a3 3b bb ff call 0xffbb3bab 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