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: 499 Comm: syz.1.16 Not tainted 5.15.151-syzkaller-1069651-g4edafe6c0231 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:dir_rename fs/incfs/vfs.c:1383 [inline] RIP: 0010:dir_rename_wrap+0x256/0x720 fs/incfs/vfs.c:91 Code: 4c 8b 3c 24 e9 3e 04 00 00 e8 d6 56 59 ff 31 db 4c 89 6c 24 18 48 83 c3 08 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 0c 7d 9b ff 4c 8b 2b 48 8b 5c 24 28 RSP: 0018:ffffc90000ec7940 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000ec7a70 R08: ffffffff8216e83d R09: fffff520001d8f19 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11022f2a203 R13: 1ffff11022f2a205 R14: ffff888117951018 R15: ffff888117951028 FS: 00007f95dbe3e6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f95dbe1dd58 CR3: 00000001170d1000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_rename+0xd25/0x10e0 fs/namei.c:4832 do_renameat2+0xb28/0x1480 fs/namei.c:4985 __do_sys_renameat2 fs/namei.c:5018 [inline] __se_sys_renameat2 fs/namei.c:5015 [inline] __x64_sys_renameat2+0xdd/0xf0 fs/namei.c:5015 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f95dc3b6299 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:00007f95dbe3e048 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f95dc544f80 RCX: 00007f95dc3b6299 RDX: 0000000000000004 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f95dc4238e6 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f95dc544f80 R15: 00007fffd7c31788 Modules linked in: ---[ end trace 71b5c802e54883c2 ]--- RIP: 0010:dir_rename fs/incfs/vfs.c:1383 [inline] RIP: 0010:dir_rename_wrap+0x256/0x720 fs/incfs/vfs.c:91 Code: 4c 8b 3c 24 e9 3e 04 00 00 e8 d6 56 59 ff 31 db 4c 89 6c 24 18 48 83 c3 08 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 0c 7d 9b ff 4c 8b 2b 48 8b 5c 24 28 RSP: 0018:ffffc90000ec7940 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000ec7a70 R08: ffffffff8216e83d R09: fffff520001d8f19 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11022f2a203 R13: 1ffff11022f2a205 R14: ffff888117951018 R15: ffff888117951028 FS: 00007f95dbe3e6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdb614d7fa8 CR3: 00000001170d1000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 8b 3c 24 mov (%rsp),%r15 4: e9 3e 04 00 00 jmp 0x447 9: e8 d6 56 59 ff call 0xff5956e4 e: 31 db xor %ebx,%ebx 10: 4c 89 6c 24 18 mov %r13,0x18(%rsp) 15: 48 83 c3 08 add $0x8,%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 0c 7d 9b ff call 0xff9b7d44 38: 4c 8b 2b mov (%rbx),%r13 3b: 48 8b 5c 24 28 mov 0x28(%rsp),%rbx