general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 10192 Comm: syz.8.2599 Tainted: G W 5.10.237-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline] RIP: 0010:d_is_positive include/linux/dcache.h:461 [inline] RIP: 0010:filename_create+0x201/0x680 fs/namei.c:3613 Code: 48 3d 01 f0 ff ff 72 11 e8 4c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70 RSP: 0018:ffffc90001987b40 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000 RDX: ffffc9000d3c0000 RSI: 0000000000000400 RDI: 0000000000000401 RBP: ffffc90001987c40 R08: dffffc0000000000 R09: ffffed1023888d3e R10: ffffed1023888d3e R11: 1ffff11023888d3d R12: ffffc90001987d20 R13: ffffc90001987d20 R14: 0000000000000008 R15: ffffc90001987d28 FS: 00007f35d94756c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb0791fc000 CR3: 0000000141a22000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kern_path_create+0x33/0x40 fs/namei.c:3648 unix_mknod net/unix/af_unix.c:999 [inline] unix_bind+0x348/0x980 net/unix/af_unix.c:1050 __sys_bind+0x2f9/0x400 net/socket.c:1665 __do_sys_bind net/socket.c:1676 [inline] __se_sys_bind net/socket.c:1674 [inline] __x64_sys_bind+0x7a/0x90 net/socket.c:1674 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f35dae2d969 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:00007f35d9475038 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007f35db055080 RCX: 00007f35dae2d969 RDX: 000000000000006e RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007f35daeafab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f35db055080 R15: 00007ffee4d32578 Modules linked in: ---[ end trace 5f656340f914b3a3 ]--- RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline] RIP: 0010:d_is_positive include/linux/dcache.h:461 [inline] RIP: 0010:filename_create+0x201/0x680 fs/namei.c:3613 Code: 48 3d 01 f0 ff ff 72 11 e8 4c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70 RSP: 0018:ffffc90001987b40 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000 RDX: ffffc9000d3c0000 RSI: 0000000000000400 RDI: 0000000000000401 RBP: ffffc90001987c40 R08: dffffc0000000000 R09: ffffed1023888d3e R10: ffffed1023888d3e R11: 1ffff11023888d3d R12: ffffc90001987d20 R13: ffffc90001987d20 R14: 0000000000000008 R15: ffffc90001987d28 FS: 00007f35d94756c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f35d9453f98 CR3: 0000000141a22000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 72 11 jb 0x19 8: e8 4c 57 bb ff call 0xffbb5759 d: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 14: fc ff df 17: eb 5c jmp 0x75 19: 4c 89 f0 mov %r14,%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: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 e7 03 00 00 jne 0x41d 36: 41 8b 1e mov (%r14),%ebx 39: 89 de mov %ebx,%esi 3b: 81 .byte 0x81 3c: e6 00 out %al,$0x0 3e: 00 .byte 0x0 3f: 70 .byte 0x70