general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 1 PID: 501 Comm: syz.4.40 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:vfs_rename+0x1b0/0x10f0 fs/namei.c:4729 Code: 30 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 63 ec f4 ff 48 8b 1b 48 8b 44 24 30 4c 8d 70 30 4d 89 f7 49 c1 ef 03 <43> 80 3c 27 00 74 08 4c 89 f7 e8 41 ec f4 ff 48 89 5c 24 50 4c 89 RSP: 0018:ffffc90000ac7b60 EFLAGS: 00010206 RAX: 0000000000000003 RBX: ffff888129bf1680 RCX: ffff888116f193c0 RDX: 0000000000000002 RSI: 0000000000400000 RDI: 0000000000200000 RBP: ffffc90000ac7cd0 R08: ffff888111820aff R09: 1ffff1102230415f R10: dffffc0000000000 R11: ffffed1022304160 R12: dffffc0000000000 R13: ffff888129bf0900 R14: 0000000000000033 R15: 0000000000000006 FS: 00007f5fe4a0e6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5fe6041600 CR3: 00000001169eb000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_renameat2+0x826/0xfd0 fs/namei.c:4993 __do_sys_rename fs/namei.c:5039 [inline] __se_sys_rename fs/namei.c:5037 [inline] __x64_sys_rename+0x86/0x90 fs/namei.c:5037 x64_sys_call+0x680/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:83 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: 0033:0x7f5fe5ff3eb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5fe4a0e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f5fe626f180 RCX: 00007f5fe5ff3eb9 RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000100 RBP: 00007f5fe6061c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5fe626f218 R14: 00007f5fe626f180 R15: 00007ffced10ddb8 Modules linked in: ---[ end trace 96aac68cda9e3bc5 ]--- RIP: 0010:vfs_rename+0x1b0/0x10f0 fs/namei.c:4729 Code: 30 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 63 ec f4 ff 48 8b 1b 48 8b 44 24 30 4c 8d 70 30 4d 89 f7 49 c1 ef 03 <43> 80 3c 27 00 74 08 4c 89 f7 e8 41 ec f4 ff 48 89 5c 24 50 4c 89 RSP: 0018:ffffc90000ac7b60 EFLAGS: 00010206 RAX: 0000000000000003 RBX: ffff888129bf1680 RCX: ffff888116f193c0 RDX: 0000000000000002 RSI: 0000000000400000 RDI: 0000000000200000 RBP: ffffc90000ac7cd0 R08: ffff888111820aff R09: 1ffff1102230415f R10: dffffc0000000000 R11: ffffed1022304160 R12: dffffc0000000000 R13: ffff888129bf0900 R14: 0000000000000033 R15: 0000000000000006 FS: 00007f5fe4a0e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4e70794fd0 CR3: 00000001169eb000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 30 48 89 xor %cl,-0x77(%rax) 3: d8 48 c1 fmuls -0x3f(%rax) 6: e8 03 42 80 3c call 0x3c80420e b: 20 00 and %al,(%rax) d: 74 08 je 0x17 f: 48 89 df mov %rbx,%rdi 12: e8 63 ec f4 ff call 0xfff4ec7a 17: 48 8b 1b mov (%rbx),%rbx 1a: 48 8b 44 24 30 mov 0x30(%rsp),%rax 1f: 4c 8d 70 30 lea 0x30(%rax),%r14 23: 4d 89 f7 mov %r14,%r15 26: 49 c1 ef 03 shr $0x3,%r15 * 2a: 43 80 3c 27 00 cmpb $0x0,(%r15,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 f7 mov %r14,%rdi 34: e8 41 ec f4 ff call 0xfff4ec7a 39: 48 89 5c 24 50 mov %rbx,0x50(%rsp) 3e: 4c rex.WR 3f: 89 .byte 0x89