Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] CPU: 1 UID: 0 PID: 481 Comm: syz.2.16 Not tainted syzkaller #0 fbb5e157d7ed46475d8c1d99fecf0f5a82b0a4b1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:vfs_rename+0x1b3/0x10f0 fs/namei.c:4902 Code: c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 e5 5c f1 ff 48 8b 03 48 89 44 24 48 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 be 5c f1 ff 49 8b 16 4c 89 6c 24 RSP: 0018:ffffc9000080fb80 EFLAGS: 00010203 RAX: 0000000000000015 RBX: ffff888113324f10 RCX: 0000000000000000 RDX: ffff88811c53df00 RSI: 0000000000400000 RDI: 0000000000200000 RBP: ffffc9000080fcf0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000101f1c R12: dffffc0000000000 R13: ffff88812452a400 R14: 0000000000000045 R15: 0000000000000008 FS: 00007f2a3e3d36c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000c000 CR3: 000000011c636000 CR4: 00000000003526b0 Call Trace: do_renameat2+0x7d1/0xc80 fs/namei.c:5170 __do_sys_rename fs/namei.c:5217 [inline] __se_sys_rename fs/namei.c:5215 [inline] __x64_sys_rename+0x86/0xa0 fs/namei.c:5215 x64_sys_call+0x150b/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f2a3d58e929 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:00007f2a3e3d3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f2a3d7b6160 RCX: 00007f2a3d58e929 RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000280 RBP: 00007f2a3d610b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f2a3d7b6160 R15: 00007ffd8963eeb8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vfs_rename+0x1b3/0x10f0 fs/namei.c:4902 Code: c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 e5 5c f1 ff 48 8b 03 48 89 44 24 48 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 be 5c f1 ff 49 8b 16 4c 89 6c 24 RSP: 0018:ffffc9000080fb80 EFLAGS: 00010203 RAX: 0000000000000015 RBX: ffff888113324f10 RCX: 0000000000000000 RDX: ffff88811c53df00 RSI: 0000000000400000 RDI: 0000000000200000 RBP: ffffc9000080fcf0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000101f1c R12: dffffc0000000000 R13: ffff88812452a400 R14: 0000000000000045 R15: 0000000000000008 FS: 00007f2a3e3d36c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000c000 CR3: 000000011c636000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 8: 74 08 je 0x12 a: 48 89 df mov %rbx,%rdi d: e8 e5 5c f1 ff call 0xfff15cf7 12: 48 8b 03 mov (%rbx),%rax 15: 48 89 44 24 48 mov %rax,0x48(%rsp) 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 be 5c f1 ff call 0xfff15cf7 39: 49 8b 16 mov (%r14),%rdx 3c: 4c rex.WR 3d: 89 .byte 0x89 3e: 6c insb (%dx),%es:(%rdi) 3f: 24 .byte 0x24