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: 15241 Comm: syz-executor.0 Tainted: G W 5.10.209-syzkaller-00001-ge7daca75b4c3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:do_rmdir+0x28e/0x5c0 fs/namei.c:3911 Code: e8 47 bb b6 ff 45 89 e5 48 bb 00 00 00 00 00 fc ff df eb 7c 49 8d 5c 24 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 14 34 f4 ff 48 83 3b 00 74 32 e8 09 RSP: 0018:ffffc90000c37de0 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 RDX: ffffc900011eb000 RSI: 0000000000000219 RDI: 000000000000021a RBP: ffffc90000c37f18 R08: ffffffff81b65c1b R09: ffffed10288f2050 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008 R13: ffff888144790250 R14: 1ffff110288f204a R15: ffffc90000c37e01 FS: 00007f5dffb996c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5dffbdafa8 CR3: 0000000127fa6000 CR4: 00000000003526a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rmdir fs/namei.c:3936 [inline] __se_sys_rmdir fs/namei.c:3934 [inline] __x64_sys_rmdir+0x49/0x50 fs/namei.c:3934 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f5e00e59de9 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:00007f5dffb990c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007f5e00f88120 RCX: 00007f5e00e59de9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007f5e00ea647a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f5e00f88120 R15: 00007ffdc1dee9c8 Modules linked in: ---[ end trace f3c8829c88dd9ef1 ]--- RIP: 0010:do_rmdir+0x28e/0x5c0 fs/namei.c:3911 Code: e8 47 bb b6 ff 45 89 e5 48 bb 00 00 00 00 00 fc ff df eb 7c 49 8d 5c 24 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 14 34 f4 ff 48 83 3b 00 74 32 e8 09 RSP: 0018:ffffc90000c37de0 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 RDX: ffffc900011eb000 RSI: 0000000000000219 RDI: 000000000000021a RBP: ffffc90000c37f18 R08: ffffffff81b65c1b R09: ffffed10288f2050 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008 R13: ffff888144790250 R14: 1ffff110288f204a R15: ffffc90000c37e01 FS: 00007f5dffb996c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32d26000 CR3: 0000000127fa6000 CR4: 00000000003526a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 47 bb b6 ff call 0xffb6bb4c 5: 45 89 e5 mov %r12d,%r13d 8: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx f: fc ff df 12: eb 7c jmp 0x90 14: 49 8d 5c 24 30 lea 0x30(%r12),%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 14 34 f4 ff call 0xfff4344c 38: 48 83 3b 00 cmpq $0x0,(%rbx) 3c: 74 32 je 0x70 3e: e8 .byte 0xe8 3f: 09 .byte 0x9