general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 PID: 476 Comm: syz.0.15 Not tainted 6.1.99-syzkaller-1151492-g0e8b65e41ffd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__d_entry_type include/linux/dcache.h:394 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline] RIP: 0010:d_is_positive include/linux/dcache.h:455 [inline] RIP: 0010:filename_create+0x2d8/0x530 fs/namei.c:3884 Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 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 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be RSP: 0018:ffffc90000967cc0 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 1ffff9200012cf00 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffffc90000967db0 R08: ffffffff81cbe7d8 R09: fffff5200012cf71 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000600 R14: 0000000000000010 R15: ffffc90000967e60 FS: 00007fb5f5ddf6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb5f5dbdfa8 CR3: 00000001135e3000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_mknodat+0x1a4/0x5c0 fs/namei.c:4023 __do_sys_mknod fs/namei.c:4069 [inline] __se_sys_mknod fs/namei.c:4067 [inline] __x64_sys_mknod+0x8e/0xa0 fs/namei.c:4067 x64_sys_call+0x3cb/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:134 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb5f4f75bd9 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:00007fb5f5ddf048 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 RAX: ffffffffffffffda RBX: 00007fb5f5103f60 RCX: 00007fb5f4f75bd9 RDX: 0000000000000700 RSI: 0000000000000000 RDI: 00000000200002c0 RBP: 00007fb5f4fe4e60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb5f5103f60 R15: 00007ffc185c06e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__d_entry_type include/linux/dcache.h:394 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline] RIP: 0010:d_is_positive include/linux/dcache.h:455 [inline] RIP: 0010:filename_create+0x2d8/0x530 fs/namei.c:3884 Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 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 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be RSP: 0018:ffffc90000967cc0 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 1ffff9200012cf00 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffffc90000967db0 R08: ffffffff81cbe7d8 R09: fffff5200012cf71 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000600 R14: 0000000000000010 R15: ffffc90000967e60 FS: 00007fb5f5ddf6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb5f5dbdfa8 CR3: 00000001135e3000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 92 xchg %eax,%edx 1: 00 00 add %al,(%rax) 3: 00 4c 89 7c add %cl,0x7c(%rcx,%rcx,4) 7: 24 28 and $0x28,%al 9: 45 84 e4 test %r12b,%r12b c: 0f 95 c0 setne %al f: 83 7c 24 14 00 cmpl $0x0,0x14(%rsp) 14: 0f 94 c3 sete %bl 17: 20 c3 and %al,%bl 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 1f 02 00 00 jne 0x255 36: 45 8b 26 mov (%r14),%r12d 39: 41 bd 00 00 70 00 mov $0x700000,%r13d 3f: be .byte 0xbe