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: 13829 Comm: syz-executor.4 Not tainted 5.15.149-syzkaller-00055-g424f92bcbe8f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:vfs_rename+0x1b2/0x10e0 fs/namei.c:4721 Code: c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 56 32 f4 ff 48 8b 03 48 89 44 24 50 48 8b 44 24 38 4c 8d 70 30 4d 89 f5 49 c1 ed 03 <43> 80 7c 3d 00 00 74 08 4c 89 f7 e8 2e 32 f4 ff 49 8b 06 48 89 44 RSP: 0018:ffffc90000c57aa0 EFLAGS: 00010207 RAX: 0000000000000004 RBX: ffff88812ce22690 RCX: 0000000000040000 RDX: ffff888112a88000 RSI: 0000000000400000 RDI: 0000000000200000 RBP: ffffc90000c57c10 R08: ffffffff81be3b6b R09: ffffed10259c45a4 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881310c3600 R13: 0000000000000006 R14: 0000000000000034 R15: dffffc0000000000 FS: 00007fc89d9966c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000b000 CR3: 0000000127463000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 8: 74 08 je 0x12 a: 48 89 df mov %rbx,%rdi d: e8 56 32 f4 ff call 0xfff43268 12: 48 8b 03 mov (%rbx),%rax 15: 48 89 44 24 50 mov %rax,0x50(%rsp) 1a: 48 8b 44 24 38 mov 0x38(%rsp),%rax 1f: 4c 8d 70 30 lea 0x30(%rax),%r14 23: 4d 89 f5 mov %r14,%r13 26: 49 c1 ed 03 shr $0x3,%r13 * 2a: 43 80 7c 3d 00 00 cmpb $0x0,0x0(%r13,%r15,1) <-- trapping instruction 30: 74 08 je 0x3a 32: 4c 89 f7 mov %r14,%rdi 35: e8 2e 32 f4 ff call 0xfff43268 3a: 49 8b 06 mov (%r14),%rax 3d: 48 rex.W 3e: 89 .byte 0x89 3f: 44 rex.R