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: 488 Comm: syz-executor Not tainted 6.1.145-syzkaller-1169961-g2ff414a09808 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:dir_rename fs/incfs/vfs.c:1419 [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 67 b5 5c 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 41 11 a1 ff 4d 8b 36 48 8b 44 24 10 RSP: 0018:ffffc90000aa7a20 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff88810fed8818 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000aa7b50 R08: dffffc0000000000 R09: fffff52000154f35 R10: fffff52000154f35 R11: 1ffff92000154f34 R12: 1ffff11021fdb103 R13: 1ffff92000154f50 R14: 0000000000000008 R15: ffff88810fed8828 FS: 00007f17c24a56c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f17c2484d58 CR3: 000000011a9e7000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_rename+0xbc4/0x10d0 fs/namei.c:4873 do_renameat2+0x7ed/0xf60 fs/namei.c:5026 __do_sys_renameat2 fs/namei.c:5059 [inline] __se_sys_renameat2 fs/namei.c:5056 [inline] __x64_sys_renameat2+0xd8/0xf0 fs/namei.c:5056 x64_sys_call+0x6b8/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:317 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f17c167cee9 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:00007f17c24a50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f17c17abf80 RCX: 00007f17c167cee9 RDX: 0000000000000004 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f17c16c949e R08: 0000000000000002 R09: 0000000000000000 R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f17c17abf80 R15: 00007ffc8ed57c18 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dir_rename fs/incfs/vfs.c:1419 [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 67 b5 5c 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 41 11 a1 ff 4d 8b 36 48 8b 44 24 10 RSP: 0018:ffffc90000aa7a20 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff88810fed8818 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000aa7b50 R08: dffffc0000000000 R09: fffff52000154f35 R10: fffff52000154f35 R11: 1ffff92000154f34 R12: 1ffff11021fdb103 R13: 1ffff92000154f50 R14: 0000000000000008 R15: ffff88810fed8828 FS: 00007f17c24a56c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f17c2484d58 CR3: 000000011a9e7000 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 67 b5 5c ff call 0xff5cb577 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 41 11 a1 ff call 0xffa11177 36: 4d 8b 36 mov (%r14),%r14 39: 48 8b 44 24 10 mov 0x10(%rsp),%rax