general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 464 Comm: syz.1.16 Not tainted 5.15.182-syzkaller-1080481-g57725b368731 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:dir_rename fs/incfs/vfs.c:1411 [inline] RIP: 0010:dir_rename_wrap+0x261/0x6a0 fs/incfs/vfs.c:91 Code: ff ff ff 48 8b 5c 24 20 e9 ca 03 00 00 e8 b7 d8 66 ff 45 31 f6 49 83 c6 08 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 c1 49 a5 ff 4d 8b 36 48 8b 44 24 10 RSP: 0018:ffffc9000313fa20 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff888119d89818 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000313fb50 R08: dffffc0000000000 R09: fffff52000627f35 R10: fffff52000627f35 R11: 1ffff92000627f34 R12: 1ffff110233b1303 R13: 1ffff92000627f50 R14: 0000000000000008 R15: ffff888119d89828 FS: 00007f8205f8c6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8205f6bd58 CR3: 0000000119ce2000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_rename+0xbb6/0x10d0 fs/namei.c:4832 do_renameat2+0x7ed/0xf60 fs/namei.c:4985 __do_sys_renameat2 fs/namei.c:5018 [inline] __se_sys_renameat2 fs/namei.c:5015 [inline] __x64_sys_renameat2+0xd8/0xf0 fs/namei.c:5015 x64_sys_call+0x258/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:317 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8206504299 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:00007f8205f8c048 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f8206692f80 RCX: 00007f8206504299 RDX: 0000000000000004 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f82065718e6 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8206692f80 R15: 00007ffda0450778 Modules linked in: ---[ end trace 6b5f6341b15da774 ]--- RIP: 0010:dir_rename fs/incfs/vfs.c:1411 [inline] RIP: 0010:dir_rename_wrap+0x261/0x6a0 fs/incfs/vfs.c:91 Code: ff ff ff 48 8b 5c 24 20 e9 ca 03 00 00 e8 b7 d8 66 ff 45 31 f6 49 83 c6 08 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 c1 49 a5 ff 4d 8b 36 48 8b 44 24 10 RSP: 0018:ffffc9000313fa20 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff888119d89818 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000313fb50 R08: dffffc0000000000 R09: fffff52000627f35 R10: fffff52000627f35 R11: 1ffff92000627f34 R12: 1ffff110233b1303 R13: 1ffff92000627f50 R14: 0000000000000008 R15: ffff888119d89828 FS: 00007f8205f8c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8205f6afa8 CR3: 0000000119ce2000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: ff 48 8b decl -0x75(%rax) 3: 5c pop %rsp 4: 24 20 and $0x20,%al 6: e9 ca 03 00 00 jmp 0x3d5 b: e8 b7 d8 66 ff call 0xff66d8c7 10: 45 31 f6 xor %r14d,%r14d 13: 49 83 c6 08 add $0x8,%r14 17: 4c 89 f0 mov %r14,%rax 1a: 48 c1 e8 03 shr $0x3,%rax 1e: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 25: fc ff df * 28: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2c: 74 08 je 0x36 2e: 4c 89 f7 mov %r14,%rdi 31: e8 c1 49 a5 ff call 0xffa549f7 36: 4d 8b 36 mov (%r14),%r14 39: 48 8b 44 24 10 mov 0x10(%rsp),%rax